Many areas in Chennai recorded heavy rain and south Chennai recorded 100+ mm yesterday. As usual Nunga missed out terrible. Some showers can be expected today, but it will be mostly dry.
Sun has peeped out of dark low clouds here in Thalambur. What is the chance of any more rains today?
I feel there might be isolated showers to moderate rains in some place of Chennai as moisture is not that much good like yesterday. Thalambur have recorded.0.6mm from the passing shower earlier this morning
No stopping of heavy rains in Andhra, ending 8.30 am on 15.04.2015
===============================
The cyclonic circulation over south Madhya Pradesh and neighbourhood now lies over central parts of Madhya Pradesh & neighbourhood and extends between 3.1 and 7.6 kms a.s.l. with a trough from this cyclonic circulation to Lakshadweep area.
Moisture is good today but not consistent. Dont be surprised by a sharp showers here and there. BoB trough of low system at lower levels and UAC at higher levels.
Not sure about that area near temple. But should be fine.
had breakfast in modern restaurant in october pouring rains. amazing food and water logged streets
Oh. Nice to hear that. Yes weather will be nice during october..
i think idli/dosa tastes better during monsoon than during summer. Getting to modern restaurant itself was difficult. We had to walk on water logged streets. But once we got there we could see rain fall outside and we are eating and drinking nice filter coffee
Yes. Idli/ dosa tastes gud always. Murugan idli restaurant is famous in mdu. Gud to have coffee and dinner during rains.
is vaigai showing any flow or still empy ?
Its dry now.But water will flow soon. Alagar god Worship in vagai river very famous here. Next month it will happen.
During chitrai yes. People need to put their hands in Vaigai to get more rains. Vai (keep) kai (hands).
If I come to your city for work I will let you know. We can have breakfast during monsoon 🙂
Ya sure bro.
Congratulations to Pradeep John and Ehsan Ahmed – great show -The ace forecaster and the Founder (and affectionately called “The Captain” by the members of this blog- names have been nicely referred in The Hindu today.
Weather bloggers like Pradeep John point out that the interaction of the cyclonic circulation with another system over Bay of Bengal and constant moisture incursion had brought heavy downpour over the city in April.
K. Ehsan Ahmed who operates a private weather website said in the last 15 years, rainfall over the city crossed 20 mm only twice in April. In, 2001 and 2005, Nungambakkam recorded 83 mm and 60 mm in April.
Sir, it was by our luck and determination the rains happened. that too from sea. Who would have thought rains in april from sea. 5 of us were hopeful of something special and we were awake the entire night. Sriram, Asad, Rainman etc and we got for what we deserved. When others went to sleep. The radar was super active from 2.00 am.
I know very well that you would not have gone to bed on that day having committed to enthusiastic bloggers to wait till next morning, that is exactly happened , as far as record breaking show – it was only a gift from the sky for your confidence . Keep it up
Congrats PJ And Eshan for again coming up in News.
It’s has become very regular nowadays that PJ name comes in the newspaper often.
He deserves a lot for his own way of interpreting rains and his failures are very rare when comes for rainfall prediction.
Yesterday morning trough chart update shown that there was a cyclonic circulation near GOM and ACC over Myanmar and Adjoining Thailand was fueling this CC over GOM. This has strengthened the easterly winds and ridge was placed at 15N.
Hence we could get TS from SE due the Ridge running from SE to NW though South Bay-SW Bay-West Central Bay, Central Coast of AP.
Yeah.. Looking at first spell the storm did not look to be strong enough to sustain but then there was a second spell.. North blore has got lot.. east blore getting its due now 🙂
My house (Sahakaranagar) wasnt so lucky in this spell…. My RG recorded totally 74mm in the last 5 days (i think 1 or 2mm less than city IMD)…. Its the other n.blore areas like GKVK, Vidyaranyapura and Yelahanka which have got atleast 12-14cm in last 5 days….
Benniganahalli has got 71mm from this spell.. I am no longer trusting banaswadi numbers..
Actually city recorded only 11mm till 11.30 pm yesterday..There was another spell after 11.30 it looks like which added another 8 mm..
Oh is it…. I had seen the radar animation at arnd 4am today and didnt see any storm arnd bangalore the past few hours…. May be it was a small one or IMD didnt update the 11:30pm reading correctly….
There might have been another spell.. there was light rain and drizzles here well into the night..
Yes, Shankar and you are right. There seems to have been some spell in south bangalore and city areas between 12:30 to 1:30am…. Girinagar AWS has recorded ~7mm between 12:30 to 1:30am, so city might have got its additional 8mm from this one….
Trough off tn coast by Friday before dipping into gom during weekend but gfs not expecting any major rain for us..mid shear levels not bad..but still no big cloud development..
Moderate chances for rain in Chennai by 17th night to 18th.
Upper and lower level wind and negative anomalies are favouring. It may not be heavy like yesterday, light to moderate rain is possible. The pic enclosed below shows the similarity at 500 HPA of yesterday morning and 18th morning.
Also the UAC will be very close to NTN coast, hence interior and south tamil nadu will get heavy rain for the next 48 hours.
Partha, with only 850 hpa chart how can u say there was no two systems. Even IMD has stated there is two systems. 850 hpa itself a UAC level. We should not call it as trough chart.
I missed to attach, even i saw in 850 HPA and 700 HPA wind chart, it was visible, there was a circulation at GOM and SE Bay yesterday morning as per the synoptic chart, whereas in GFS wind map it was missing, only SE bay circulation was visible, that is why i raised this question of 2 systems.
Check the animation and wind pattern, the winds will be from NW from now on till 18th over coastal TN.
since a low is forming over SE bay and Adjoining North Indian Ocean, this will trigger the change in wind pattern for next couple of days.
I will be happy if it rains next week ( 19th-25) in karaikkudi & tirunelveli..a func .Since the present trough moves thru Gom..expecting rains over there next week..Will attach pics from there..
Rain is required in the main city Nunga,T Nagar,Kodambakkam,Anna Nagar,Mogappair dint get rains
parrys, mylapore,alwarpet, adyar,gundy,saidapet got heavy rains. Even perambur got decent rains. Are these not part of city ?
there seems a problem with the location of IMD. Nunga should no longer represent city.
Not problem with location of IMD….it should be problem with the size of the city rain clouds unable to extend whole of chennai
1)80% of city got heavy rains( NOrth, SOuthwest, South suburbs, Northwest suburbs)
2)10% of city got rains( West, West suburbs)
3)10% of city with only drizzles>>
which on can we take for figure?
Nunga is in 2nd place
but records will only say nunga got 2.6 mm and airport got 103.2
Anna university, and other places will be forgotten
Shifting of IMD office from Nungambakkam to Meenambakkam is to be done quickly!
yes, then rains will start in nunga
u r 100% correct ? ? ? ? ?
Kea, one doubt..when checking the wind pattern, for UAC/trough of low , should we check the winds at 10hpa/50 hpa & for WD/tropical cyclones, should we check at 500hpa?
Hi naresh, 10 hpa/50 hpa is the altitude of stratosphere which is above troposphere reaching above 25kms. So it is not a much relevant layer to track any system.. lpa trough will get driven by surface to 700 hpa(3.1km height) winds.. wd can b tracked well in 500- 700hpa. And regarding Cyclones it depends on intensity of the system,on an average it gets driven by 300-500hpa for a bay cyclone.
govindaraopet 64.2 mm
nagari 56.4 mm
mominpet 42.0 mm
kollapur 34.2 mm
kalakada 24.6 mm
chodavaram 23.2 mm
satyavedu 22.2 mm
mandapalle 22.0 mm
metpalle 20.0 mm
yedapalle 18.2 mm
muthole 16.8 mm
puttur 14.8 mm
jukkal 13.6 mm
rayachoti 13.6 mm
Sid, Did you get a response for ur mail to ksndmc? I got a reply now 🙂
“It is right that the two rain gauges are locted with in 2 km. It is very much valid in an urban area that the rainfall can vary within these two locations The main fundamental of installing such a dense network of TRG in Bangalore is to study such variations. As we
often expirience that it is raining in one plce and the nearby area has not received rain eg:Mekhri circle it is raining and there is no rain in RT Nagar.
Anyways our technicians will check for the working of the TRG. thanks for the concern”
There are 2 TRGs within 2kms of each other – banaswadi and beniganahalli.. One always reports considerably lesser than other 90% of time which is kind of hard to believe… I have been observing it since last year. So far one has recorded 97mm for the year and other 130mm for the year… the difference only increases over the year ending up in a difference of 10cm or so at end of the year..
Super! Great to know that they are replying to mails 🙂
I haven’t got a reply yet though 😦
thunderstorm struggling to move beyond ponnmalle. but there are chances by late evening. this time, it has to cover chennai city. at least to get a few centimeters though not 10, for consolation.
ss
SWM and NEM Rainfall in Chennai during ELNINO coupled with IOD Years.
1. South West Monsoon:
During 14 ELNINO Years, SWM failed 9 times and succeeded 5 times.
We all know SWM will fail during ELNINO years; it has succeeded 5 times 1957, 1965, 1982, 1991 & 2004.
A. In 1957 & 1965 ELNINO developed before March itself,hence SWM was not affected much. In 1982, 1991 & 2004
ELNINO were weak and ENSO values around 0.7 and 0.8 hence not affected the SWM rainfall in Chennai.
B. SWM Failed in 1951, 1953, 1969, 1972, 1987, 1997, 2002 & 2009.
·
Except 1972, 1987 & 1997, all other years ELNINO was at developing stage like 2014, these unsettled condition impacted SWM performance. These years there was a strong ELNINO developed before May itself, even though 1972 was positive IOD year could not help SWM.
2. North East Monsoon:
During 14 ELNINO years, NEM failed 8 times and succeeded 6 times.
A. The success was in 1969, 1972, 1987, 1997, 2002 & 2009. ELNINO were strong. All years IOD & ELNINO were settled
by August or September and continued with same value till the onset of NEM.
B. The failure years 1951, 1953, 1957, 1963, 1965, 1982, 1991 & 2004. These years IOD were inconsistent and Neutral during August and September, hence NEM failed. Except 1982 all other years IOD was neutral. In 1982 ELNINO formed in July itself.
To Summarise SWM:
1. If ELNINO developed before SWM and Positive IODdevelops after onset then SWM will succeed
(E.G. 1963, 1982, 1991), Positive IOD should set in between Jun-July,not early or late, even if it sets in August
will derail SWM performance, (E.G.1987).
2. If ELNINO developing during SWM then Positive IOD developed after onset can support SWM.
3. If ELNINO and Positive IOD both developed before onset of SWM, then SWM will fail.
To Summarise NEM:
1. If ELNINO & Positive IOD formed before August and continued till NEM, then NEM does not succeed.
(E.G. 1963, 1982 & 1991)
2. If ELNINO formed earlier and Positive IOD gets settled by September, then we will get good NEM.
(E.G. 1972, 1987, 1997 & 2002).
3. If ELNINO formed in August and settled in September, then even if IOD is neutral till September, then also NEM successful. (E.G.1969 & 2009).
Updated – SWM and NEM Rainfall in Chennai during ELNINO coupled with IOD Years.
1. South West Monsoon:
During 14 ELNINO Years, SWM failed 9 times and succeeded 5 times.
We all know SWM will fail during ELNINO years; it has succeeded 5 times 1957, 1965, 1982, 1991 & 2004.
A. In 1957 & 1965 ELNINO developed before March itself,hence SWM was not affected much. In 1982, 1991 & 2004
ELNINO were weak and ENSO values around 0.7 and 0.8 hence not affected the SWM rainfall in Chennai.
B. SWM Failed in 1951, 1953, 1969, 1972, 1987, 1997, 2002 & 2009.
·
Except 1972, 1987 & 1997, all other years ELNINO was at developing stage like 2014, these unsettled condition impacted SWM performance. These years there was a strong ELNINO developed before May itself, even though 1972 was positive IOD year could not help SWM.
2. North East Monsoon:
During 14 ELNINO years, NEM failed 8 times and succeeded 6 times.
A. The success was in 1969, 1972, 1987, 1997, 2002 & 2009. ELNINO were strong. All years IOD & ELNINO were settled
by August or September and continued with same value till the onset of NEM.
B. The failure years 1951, 1953, 1957, 1963, 1965, 1982, 1991 & 2004. These years IOD were inconsistent and Neutral during August and September, hence NEM failed. Except 1982 all other years IOD was neutral. In 1982 ELNINO formed in July itself.
To Summarise SWM:
1. If ELNINO developed before SWM and Positive IODdevelops after onset then SWM will succeed
(E.G. 1963, 1982, 1991), Positive IOD should set in between Jun-July,not early or late, even if it sets in August
will derail SWM performance, (E.G.1987).
2. If ELNINO developing during SWM then Positive IOD developed after onset can support SWM.
3. If ELNINO and Positive IOD both developed before onset of SWM, then SWM will fail.
To Summarise NEM:
1. If ELNINO & Positive IOD formed before August and continued till NEM, then NEM does not succeed.
(E.G. 1963, 1982 & 1991)
2. If ELNINO formed earlier and Positive IOD gets settled by September, then we will get good NEM.
(E.G. 1972, 1987, 1997 & 2002).
3. If ELNINO formed in August and settled in September, then even if IOD is neutral till September, then also NEM successful. (E.G.1969 & 2009).
it is not seen clearly but am sure it wont be in s.hemisphere.. it shld b somewhere near equator by tis time(seasonal position).. in next 15 days of time it will b seen in south bay
then selvan i think we can expect a cyclone taking birth from ITCZ,is there any chance of LAILA like cyclone in April or May to bring rain to TN,AP?
its quite normal to expect lp system forming by early may around the low latitudes of bay.. as far as tn/ap is concerned, system shld form very close to the coast or southwest bay.
ok.but its some what unlikely scenario in may.
It had happened but not very often.
ecmwf long range forecast for swm considering the april conditions are out, and tis forecast carries very high importance.. highlights of the forecast
1.elnino threat remains same for swm .
2.n.tamilnadu, south ap, gujarat and most nw parts of india r likely to see below average rains
no if this monsoon is failure means then it will be hot until october itself it is this monsoon which prevents the heat (2009 is an example it was hot because of no rains)
Didn’t we already get above average rains considering yesterday entire ntn coast inc Chennai tiruvallur kanchi dist also telengana ??
yes jon. tis rains for tn is expected to continue till may.
cfs expecting above normal ssta in s.indian ocean and below normal sst along most parts of n.indian ocean during core swm months,,tis is too bad. tis kind of conditions had led to monsoon failure in past years
There is another advantage for Chennai and TN is that, during ELNINO years if SWM fails, then NEM performs well.
In the featured comment, you can see that attachment for your reference.
El Nino is officially here and forecasters say it could grow substantially stronger in the coming months.
El Nino refers to the episodic warming of ocean temperatures in central and eastern tropical Pacific, which has ripple effects in weather systems around the globe. For example, its presence tends to decrease Atlantic hurricane activity, but increase fall and winter rains in California.
Forecasting the present El Nino has proven to be a humbling experience. Last spring, the National Weather Service assigned favorable odds for its arrival by the fall, which never happened. A lack of sustained westerly winds, required to transport warm water from western to eastern tropical Pacific, was one reason.
But now that El Nino conditions are firmly established, forecasters are somewhat more confident the stage is set for intensification.
Phil Klotzbach, a climate researcher at Colorado State University who studies the effects of El Nino on Atlantic hurricane activity, points to several indicators suggesting El Nino will strengthen, and perhaps substantially.
In March, Klotzbach says, a burst of westerly winds – the strongest since 1997 – ripped across the tropical Pacific. Although a similar burst – almost as strong – occurred in the 2014, the winds did not persist. “This year’s westerly wind burst was longer-lasting and more intense than last year’s event,” Klotzbach says.
Klotzbach adds the tropical atmosphere and ocean is much better conditioned for El Nino compared to last year. “The upper ocean heat content is higher,” he says. “This means that there is more fuel for the El Nino to develop. In addition, upper and lower-level winds are more El Nino-like, especially when you look at the longer-term average..
El Nino conditions have fluorished in recent weeks says Paul Roundy, a professor of atmospheric sciences at the University at Albany. “[B]uoy observations suggest that the growth rate of El Niño conditions over the last few weeks is larger than any past event at this time of the year, even larger than the big event of 1997,” Roundy says. “[T]he present amplitude, when compared with signals at the same time of year, for growing events, is the largest in the historical record going back to 1980.”
Roundy calls for an 80 percent that strong El Nino conditions will develop this June and July and continue into next winter.
El Nino risks rising in India this year, to hurt food inflation: Nomura
NEW DELHI: The El Nino risks for this year is rising in India and it could result in sub-par rains, hurting rural demand and food inflation in the country, says a report.
According to the Japanese brokerage firm Nomura, the possibility of El Nino conditions is developing this year and this could possibly push food inflation temporarily higher.
El Nino conditions often, although not always, result in below-normal rains and hence suggest risk of sub-par rainfall during the monsoon season (June-September).
The Australian Commonwealth Bureau of Meteorology’s Southern Oscillation Index (SOI) dropped to -11.2 in March from 0.6 in February. A sustained SOI reading below -8 indicates El Nino conditions.
The bureau has raised the possibility of El Nino conditions developing this year to “at least 70 per cent” from 50 per cent earlier, Nomura said.
India’s agriculture economy is already reeling under the pressure of consecutive bad kharif (summer) and rabi (winter) seasons.
any part of chennai getting rains? Red spot exactly above
Very heavy rain lashing here.
Bright sunshine at kilpauk
Less chances for widespread rains but isolated rains possible
Sun has peeped out of dark low clouds here in Thalambur. What is the chance of any more rains today?
I feel there might be isolated showers to moderate rains in some place of Chennai as moisture is not that much good like yesterday. Thalambur have recorded.0.6mm from the passing shower earlier this morning
Am feeling we want to wait till afternoon to get severe ts
Yesterday entire tamilnadu good rain fall
Today also possible pa
Popup occuring in sea now we want wait till afternoon to popup get strength
TS started popping out in the sea. Watch out for the east.
Will sea ts move towards chennai?
We want good moisture to have a big stroms
Lots of small ts popup in sea in near pondi hope it grow bigger
It will
Lots of tiny ts has formed in the sea, another exciting day ahead
What a rain in Madurai…….
Yes from yesterday evening on and off heavy rain.
No stopping of heavy rains in Andhra, ending 8.30 am on 15.04.2015
===============================
The cyclonic circulation over south Madhya Pradesh and neighbourhood now lies over central parts of Madhya Pradesh & neighbourhood and extends between 3.1 and 7.6 kms a.s.l. with a trough from this cyclonic circulation to Lakshadweep area.
in mm (min 30 mm)
Chinnamandem – 117
Rapur – 110
Nambulipulikunta – 101
Dakkali – 78
Kothagunta – 70
Sambepalle – 66
Gajulavari Palle – 62
Podili 59
Darsigunta Peta – 56
Konakanamitla – 54
Pothegunta – 52
Duttalur – 51
Madhavaram – 49
Nuzvid – 46
Vemanapuram- 46
Chinnapuram – 45
Bhavadevarapalle – 44
Indukur – 42
Gotur – 42
Thambalapalle – 40
Varikuntapadu – 39
Utukuru – 38
Chintukommandene – 37
Letapalle – 36
Kotavooru – 35
Macherla – 34
Darsi – 33
Sullurpeta – 33
Ganjivaripalle – 33
Podili – 32
Vemula – 32
Gurramkonda – 31
Ghantasala – 31
Thipaipalem – 31
Chillakur – 31
Chakrayapet – 30
Moolavanka – 30
Seethampeta – 30
Pantapalem Epuru – 30
Tada – 30
Uppalur – 30
Devapatla – 30
Obuladevaracheruvu – 30
Donabanda – 30
Pulivendla – 30
Veldurthi – 30
Kamalapuram – 30
Obulakkapalli – 30
Musunuru – 30
Nyamaddala – 30
Vagaries Rainman – http://tamilnaduweatherman.blogspot.in/p/blog-page_2.html
Tamil Nadu Weatherman – https://www.facebook.com/tamilnaduweatherman
Kea Weather Converse – http://forum.keaweather.org/viewforum.php?f=48
Reason for popups
Moisture from trough of low – http://earth.nullschool.net/#current/wind/surface/level/orthographic=-279.08,9.94,2048
UACs at 700 hpa – http://earth.nullschool.net/#current/wind/isobaric/700hPa/orthographic=-279.08,9.94,2048
the massive UAC at 500 hpa at MAdhya Pradesh – http://earth.nullschool.net/#current/wind/isobaric/500hPa/orthographic=-281.78,12.92,2048
Today rain possible for Chennai?
Moisture is good today but not consistent. Dont be surprised by a sharp showers here and there. BoB trough of low system at lower levels and UAC at higher levels.
Wiill the ts grow bigger and intense??
See earth null today it will be turn of Karikkal, nagapattinam etc
how much can we expect today ?
Today’s morning heavy rainfall
how is the area near temple?
Not sure about that area near temple. But should be fine.
had breakfast in modern restaurant in october pouring rains. amazing food and water logged streets
Oh. Nice to hear that. Yes weather will be nice during october..
i think idli/dosa tastes better during monsoon than during summer. Getting to modern restaurant itself was difficult. We had to walk on water logged streets. But once we got there we could see rain fall outside and we are eating and drinking nice filter coffee
Yes. Idli/ dosa tastes gud always. Murugan idli restaurant is famous in mdu. Gud to have coffee and dinner during rains.
is vaigai showing any flow or still empy ?
Its dry now.But water will flow soon. Alagar god Worship in vagai river very famous here. Next month it will happen.
During chitrai yes. People need to put their hands in Vaigai to get more rains. Vai (keep) kai (hands).
http://timesofindia.indiatimes.com/city/chennai/Catchment-areas-of-Mullaperiyar-Vaigai-dams-receive-heavy-rain/articleshow/46930535.cms
Where r u from?
delta area. cauvery better condition than vaigai.
Oh k. Yes delta area rocks during nem.
If I come to your city for work I will let you know. We can have breakfast during monsoon 🙂
Ya sure bro.
Congratulations to Pradeep John and Ehsan Ahmed – great show -The ace forecaster and the Founder (and affectionately called “The Captain” by the members of this blog- names have been nicely referred in The Hindu today.
http://www.thehindu.com/todays-paper/tp-national/tp-tamilnadu/record-rain-in-chennai/article7107354.ece
Weather bloggers like Pradeep John point out that the interaction of the cyclonic circulation with another system over Bay of Bengal and constant moisture incursion had brought heavy downpour over the city in April.
K. Ehsan Ahmed who operates a private weather website said in the last 15 years, rainfall over the city crossed 20 mm only twice in April. In, 2001 and 2005, Nungambakkam recorded 83 mm and 60 mm in April.
wished they atleast put the correct figures. it was 83 mm for both 2001 and 2005
Congratulations kea…..Your name is published in The Hindu………Hats Off to your dedication & passion.
That is okay, referring your name itself speaks volume about your Blog. Well done
Shabaash Duo..
Sir, it was by our luck and determination the rains happened. that too from sea. Who would have thought rains in april from sea. 5 of us were hopeful of something special and we were awake the entire night. Sriram, Asad, Rainman etc and we got for what we deserved. When others went to sleep. The radar was super active from 2.00 am.
I know very well that you would not have gone to bed on that day having committed to enthusiastic bloggers to wait till next morning, that is exactly happened , as far as record breaking show – it was only a gift from the sky for your confidence . Keep it up
Ts not moving in sea
radar struck once again
No. Radar working
OMG. Historic rains in Madurai. Many 100 mms reported. MAdurai should be marooned by now.
historic dryness in nunga. Officially the dry spell is still on 107 days and counting
how come. Nunga got 2.6 mm. 2.5 mm is a rainy day. the dry spell is broken.
imd recorded 2.6? I did not see that. I though 2 mm
Congratulations PJ…..Your name is published in The Hindu………Hats Off to your dedication & passion.
Again much moisture content in the tropospheric levels over west central telangana……
Today very favourable for thunderstorm development……
Delta turn today
Can someone post pics of Madurai rains.. are the rains helping vaigai?
see below. madurai veeran posted 2 pic
Times Group NDTV Flipcart, etc commits to withdraw from internet.org; appeals to fellow publishers to follow suit and support net neutrality
Delta Dist to get Battered.
Congrats to PJ & Ehsan
Another overnight rain over STN… Devakottai , periyakulam arg-10cm, Andipatti-6cm
Rainfall data till 7.30am today.
Taramani – 116mm
Devakottai – 100mm
Periakulam – 100mm
Dharapuram – 75mm
Andipatti – 63mm
Kolapakkam – 57mm
Anna University – 53mm
Dindugal – 45mm
Kollimalai- 44mm
Manimuthar Dam – 43mm
Vedasandur – 37mm
Manamadurai – 35mm
Kamudhi- 34mm
Rajapalayam -34mm
Chembarambakkam – 32mm
Kangeyam – 31mm
Tirunelveli – 24mm
Sathyabama University- 20mm
Nilakottai – 17mm
Kovilpatti – 16mm
Veppanthattai – 15mm
Thoothukudi Port – 13mm
Chidambaram – 12mm
Poonamallee – 12mm
Madavaram – 11mm
Tirumayam – 11mm
wer is our amb
no place for zero mm readings
where is meena? one of the major rainfall area y’day?
its in anna
sorry, it’s more than that, i think it’s 10 cm
yes it is 103mm
Cloud getting darker and there is likely another show today – probably it is left over of yesterday
no chancde
who knows may today’s show for Nunga
Congrats…. All the Best KEA
Congrats…. All the Best PJ
Today Circulation is slightly more defined @850 in se bay now will pass through s of SL ,tn under its itsinfluence..
North Tamil nadu?
Pop ups in 50km radius south of Chennai..at Bob..
Will it rain what is d wind direction?
No..rains not possible now
Congrats Data Man and Captain!excellent stuff
Storms lining up developing along shar to kkl entire coast
they are in for a battering.this april is amazing overall.
Congrats to PJ ..and all fellow bloggers who put their hearts and soul…
First-rate to PJ & EA
Congrats PJ And Eshan for again coming up in News.
It’s has become very regular nowadays that PJ name comes in the newspaper often.
He deserves a lot for his own way of interpreting rains and his failures are very rare when comes for rainfall prediction.
If Pradeep doesn’t appear..Its news for us…
Congrats to PJ and EA.
But i doubt there were 2 systems?
Yesterday morning trough chart update shown that there was a cyclonic circulation near GOM and ACC over Myanmar and Adjoining Thailand was fueling this CC over GOM. This has strengthened the easterly winds and ridge was placed at 15N.
Hence we could get TS from SE due the Ridge running from SE to NW though South Bay-SW Bay-West Central Bay, Central Coast of AP.
Its turning out to be a dream APRIL 2015 here… temperature below 25 now with steady drizzles, consistent rains past few days ….
Wow let dis continue…..
Will chennai get rains?
I don’t think so.. We should ready to welcome our summer
S isolated
Still few more wet days ahead for South tamilnadu. Enjoy
excuse me – but can you say where in Ramnad is this photo ?
Again greeneries should b back all tn n ova hills replicating monsoon….:)
Bengaluru city 19mm HAL AP 16.5mm
Doddenakundi in bengaluru east records max of 31mm
Beniganahalli 16.5mm
My guess abt Bangalore city IMD’s rains was right 🙂
North bangalore missed out a bit yday 😦
Yeah.. Looking at first spell the storm did not look to be strong enough to sustain but then there was a second spell.. North blore has got lot.. east blore getting its due now 🙂
My house (Sahakaranagar) wasnt so lucky in this spell…. My RG recorded totally 74mm in the last 5 days (i think 1 or 2mm less than city IMD)…. Its the other n.blore areas like GKVK, Vidyaranyapura and Yelahanka which have got atleast 12-14cm in last 5 days….
Benniganahalli has got 71mm from this spell.. I am no longer trusting banaswadi numbers..
Actually city recorded only 11mm till 11.30 pm yesterday..There was another spell after 11.30 it looks like which added another 8 mm..
Oh is it…. I had seen the radar animation at arnd 4am today and didnt see any storm arnd bangalore the past few hours…. May be it was a small one or IMD didnt update the 11:30pm reading correctly….
There might have been another spell.. there was light rain and drizzles here well into the night..
Yes, Shankar and you are right. There seems to have been some spell in south bangalore and city areas between 12:30 to 1:30am…. Girinagar AWS has recorded ~7mm between 12:30 to 1:30am, so city might have got its additional 8mm from this one….
Trough off tn coast by Friday before dipping into gom during weekend but gfs not expecting any major rain for us..mid shear levels not bad..but still no big cloud development..
PJ – what’s your forecast of rainfall this year in TN especially chennai
Yesterday Rainfall:
Guindy is leading first with 132mm………..
widespread over S chennai…
what?
when
overall precipitation upto 8.30am
..
Ahhhh how smartly the TS have avoided Cental and North/North West Madras yesterday…Southern areas stretching up to Poonamalee getting pounded…
Taramani velachery Adam biggest beneficiary poonamalle recorded lesd than 20mm
Yes, though it stretched up to Poonamalee, areas before that like {Porur got good rains..
oh yes we were one of the beneficiaries from this windfall – next two months I need not buy water
Congrats to PJ & captain
Moderate chances for rain in Chennai by 17th night to 18th.
Upper and lower level wind and negative anomalies are favouring. It may not be heavy like yesterday, light to moderate rain is possible. The pic enclosed below shows the similarity at 500 HPA of yesterday morning and 18th morning.
Also the UAC will be very close to NTN coast, hence interior and south tamil nadu will get heavy rain for the next 48 hours.
Reports of lihgt rains in poonamalle
Yesterday, Guindy, saidapet got 93mm from 09.15 am to 9.45 am…This can be called As “Cloud Burst???????
No it can be called as Forceful water fall
yes
Not really
Periyakulam (Theni Dist)
15
Taramani arg (Kancheepuram Dist)
12
Dharapuram (Tiruppur Dist), Mulanur (Tiruppur Dist), Aranmanaipudur (Theni Dist)
11 each
Chennai AP (Kancheepuram Dist), Tirumangalam (Madurai Dist), Devakottai (Sivaganga Dist), Periyakulam AWS (Theni Dist), Erode (Erode Dist)
10 each
Kumarapalayam (Namakkal Dist), Bhavani (Erode Dist), Kamatchipuram (Dindigul Dist)
9 each
R.s.mangalam (Ramanathapuram Dist), Palani (Dindigul Dist), Aravakurichi (Karur Dist), Thenkasi (Tirunelveli Dist)
8 each
Anna University (Chennai Dist), Manamelkudi (Pudukkottai Dist), Pennagaram (Dharmapuri Dist), Andipatti (Theni Dist)
7 each…….
Weak Kelvin Wave likely in Phase 2 by next week.
Will it bring a system around 23rd to 26th?
IMD yesterdays very heavy rainfall zones..
Periyakulam (Theni Dist) 15
Taramani arg (Kancheepuram Dist) 12
Dharapuram (Tiruppur Dist), Mulanur (Tiruppur Dist),
Aranmanaipudur (Theni Dist) 11 each
Chennai AP (Kancheepuram Dist), Tirumangalam (Madurai
Dist), Devakottai (Sivaganga Dist), Periyakulam AWS (Theni Dist),
Erode (Erode Dist) 10 each
Kumarapalayam (Namakkal Dist), Bhavani (Erode Dist),
Kamatchipuram (Dindigul Dist) 9 each
R.s.mangalam (Ramanathapuram Dist), Palani (Dindigul
Dist), Aravakurichi (Karur Dist), Thenkasi (Tirunelveli Dist) 8 each
South AP might get good TS this afternoon…
Areas like Chittoor, Renigunta, Triupathi, Nagari and Kalahasthi.
any chances for hyderabad?
Bright sunshine in dindigul after night’s rain…clouds over kodai hills and sirumalai…
here also sunshine….
gud snaps
Partha, with only 850 hpa chart how can u say there was no two systems. Even IMD has stated there is two systems. 850 hpa itself a UAC level. We should not call it as trough chart.
PJ,
I missed to attach, even i saw in 850 HPA and 700 HPA wind chart, it was visible, there was a circulation at GOM and SE Bay yesterday morning as per the synoptic chart, whereas in GFS wind map it was missing, only SE bay circulation was visible, that is why i raised this question of 2 systems.
lots of pop ups in bay…..chances are bright for a ts show today evening..
Check the animation and wind pattern, the winds will be from NW from now on till 18th over coastal TN.
since a low is forming over SE bay and Adjoining North Indian Ocean, this will trigger the change in wind pattern for next couple of days.
Low over GOM is weakening.
Hence watch out for TS over NW, if any..
yep..
will it intensify into a cyclone in coming days?
no
ok.but if there is same low near phillippines it might have intensified into a cyclone by now.bay is the weakest sea in terms of cyclone frequency.
bay getting ready for evening showers for Chennai??? watch out some ts entering in 50km already.. radar…
TS entered 30KM radius, near Tamaraipakkam.
Remember Winds at 1.5 to 2.5 KM is from NW.
Will it reach chennai
I thought u were leaving for school
how to login into weather report kea weather blog with this new phone asus zenfone 5?
I will be happy if it rains next week ( 19th-25) in karaikkudi & tirunelveli..a func .Since the present trough moves thru Gom..expecting rains over there next week..Will attach pics from there..
i think present low is moving into west central bay of bengal instead of GOM and this is by seeing the present satellite image
Moderate rain for 5-10 minutes in maraimalai nsgar
IMD forecasts widespread rainfall in tn today with isolated heavy rainfall.
heavy rain here in mangadu for 5 mins
light rain in new perungalathur
Yesterday seems to be rainiest day for TN so far this year.
17.8mm average rainfall.
Overall the it exceeded 107% than normal rainfall
ts marching twrds Chennai city ….nw..
yes…near MO a ts marching..we will get rains
but also my area will miss out…..
ah yes
st.mount,adam will get rains,,,
mine area is nearer to that
the you could get a odd shower
tiny red spots inside 30 km radius..
some passing showers possible soon..
yes yes
today showers possible for north,central, south Chennai..not heavy ,moderate..
becoming very sunny
after 45mts..
south tmbrm to get some passing showers soon.
SRI Radar,
Intensity at 20MM per hour near Tambaram and to near Chengalpet.
Upto 60MM per hour over South of Chengalpet.
partha .which areas in Chennai will get showers..you feel>>??
western areas????
it is very tough to say area wise, north and south suburbs has good chance, city always doubtful…
nooo.again??
Just checked the RG Ambattur recorded 25mm.
when?? today??
Mild upper air circulation on 19th, Very Very close to NTN coast??
Yesterday rain came from sea, but now it looks as though we will get rain from land but city might miss again
city got more than enough yesterday…now why missing?
actual city dint get it…..is required
wat require?
Rain is required in the main city Nunga,T Nagar,Kodambakkam,Anna Nagar,Mogappair dint get rains
parrys, mylapore,alwarpet, adyar,gundy,saidapet got heavy rains. Even perambur got decent rains. Are these not part of city ?
there seems a problem with the location of IMD. Nunga should no longer represent city.
Not problem with location of IMD….it should be problem with the size of the city rain clouds unable to extend whole of chennai
getting dark in West…
Chennai beat bangalore the rainfall figures…….
but bangalore got rains mostly everyday with 78mm till now
chennai got only one cloud burst with 100+mm
which Chennai? Nunga still lagging way way behind
anna university
1)80% of city got heavy rains( NOrth, SOuthwest, South suburbs, Northwest suburbs)
2)10% of city got rains( West, West suburbs)
3)10% of city with only drizzles>>
which on can we take for figure?
Nunga is in 2nd place
but records will only say nunga got 2.6 mm and airport got 103.2
Anna university, and other places will be forgotten
Shifting of IMD office from Nungambakkam to Meenambakkam is to be done quickly!
yes, then rains will start in nunga
u r 100% correct ? ? ? ? ?
Kea, one doubt..when checking the wind pattern, for UAC/trough of low , should we check the winds at 10hpa/50 hpa & for WD/tropical cyclones, should we check at 500hpa?
It Depends on the system…. it will be from 850hpa to 500hpa not more than that
Ok Sir, thanks for clarifying. understood now
u no need to worry about 10hpa / 50hpa…
Ok
Hi naresh, 10 hpa/50 hpa is the altitude of stratosphere which is above troposphere reaching above 25kms. So it is not a much relevant layer to track any system.. lpa trough will get driven by surface to 700 hpa(3.1km height) winds.. wd can b tracked well in 500- 700hpa. And regarding Cyclones it depends on intensity of the system,on an average it gets driven by 300-500hpa for a bay cyclone.
Great explanation.
Thank u shan.
Kalakara chandru
😀
Thank u for clarifying. understood now
Super Zen.
Vela can you explain to me how parry’s recorded 5-6 cms yesterday?
oh awesome picture ts entering land exactly at santhome mandaveli royapettah .
Moderate rain in telangana and rayalaseema
govindaraopet 64.2 mm
nagari 56.4 mm
mominpet 42.0 mm
kollapur 34.2 mm
kalakada 24.6 mm
chodavaram 23.2 mm
satyavedu 22.2 mm
mandapalle 22.0 mm
metpalle 20.0 mm
yedapalle 18.2 mm
muthole 16.8 mm
puttur 14.8 mm
jukkal 13.6 mm
rayachoti 13.6 mm
Sid, Did you get a response for ur mail to ksndmc? I got a reply now 🙂
“It is right that the two rain gauges are locted with in 2 km. It is very much valid in an urban area that the rainfall can vary within these two locations The main fundamental of installing such a dense network of TRG in Bangalore is to study such variations. As we
often expirience that it is raining in one plce and the nearby area has not received rain eg:Mekhri circle it is raining and there is no rain in RT Nagar.
Anyways our technicians will check for the working of the TRG. thanks for the concern”
Let us check if they check it..
what happen why complain
There are 2 TRGs within 2kms of each other – banaswadi and beniganahalli.. One always reports considerably lesser than other 90% of time which is kind of hard to believe… I have been observing it since last year. So far one has recorded 97mm for the year and other 130mm for the year… the difference only increases over the year ending up in a difference of 10cm or so at end of the year..
Super! Great to know that they are replying to mails 🙂
I haven’t got a reply yet though 😦
it is surprising Tambaram which also received heavy rainfall y’day, missing from Imd chennai rainfall update
thunderstorm struggling to move beyond ponnmalle. but there are chances by late evening. this time, it has to cover chennai city. at least to get a few centimeters though not 10, for consolation.
ss
SWM and NEM Rainfall in Chennai during ELNINO coupled with IOD Years.
1. South West Monsoon:
During 14 ELNINO Years, SWM failed 9 times and succeeded 5 times.
We all know SWM will fail during ELNINO years; it has succeeded 5 times 1957, 1965, 1982, 1991 & 2004.
A. In 1957 & 1965 ELNINO developed before March itself,hence SWM was not affected much. In 1982, 1991 & 2004
ELNINO were weak and ENSO values around 0.7 and 0.8 hence not affected the SWM rainfall in Chennai.
B. SWM Failed in 1951, 1953, 1969, 1972, 1987, 1997, 2002 & 2009.
·
Except 1972, 1987 & 1997, all other years ELNINO was at developing stage like 2014, these unsettled condition impacted SWM performance. These years there was a strong ELNINO developed before May itself, even though 1972 was positive IOD year could not help SWM.
2. North East Monsoon:
During 14 ELNINO years, NEM failed 8 times and succeeded 6 times.
A. The success was in 1969, 1972, 1987, 1997, 2002 & 2009. ELNINO were strong. All years IOD & ELNINO were settled
by August or September and continued with same value till the onset of NEM.
B. The failure years 1951, 1953, 1957, 1963, 1965, 1982, 1991 & 2004. These years IOD were inconsistent and Neutral during August and September, hence NEM failed. Except 1982 all other years IOD was neutral. In 1982 ELNINO formed in July itself.
To Summarise SWM:
1. If ELNINO developed before SWM and Positive IODdevelops after onset then SWM will succeed
(E.G. 1963, 1982, 1991), Positive IOD should set in between Jun-July,not early or late, even if it sets in August
will derail SWM performance, (E.G.1987).
2. If ELNINO developing during SWM then Positive IOD developed after onset can support SWM.
3. If ELNINO and Positive IOD both developed before onset of SWM, then SWM will fail.
To Summarise NEM:
1. If ELNINO & Positive IOD formed before August and continued till NEM, then NEM does not succeed.
(E.G. 1963, 1982 & 1991)
2. If ELNINO formed earlier and Positive IOD gets settled by September, then we will get good NEM.
(E.G. 1972, 1987, 1997 & 2002).
3. If ELNINO formed in August and settled in September, then even if IOD is neutral till September, then also NEM successful. (E.G.1969 & 2009).
convectional area in western arb sea designated as 90A by navy nrl but conditions r very bad , it wont survive no longer.. dry air killing the system.
In fact it will have no impact in India- am I right
yes definitely no impact, sir
Updated – SWM and NEM Rainfall in Chennai during ELNINO coupled with IOD Years.
1. South West Monsoon:
During 14 ELNINO Years, SWM failed 9 times and succeeded 5 times.
We all know SWM will fail during ELNINO years; it has succeeded 5 times 1957, 1965, 1982, 1991 & 2004.
A. In 1957 & 1965 ELNINO developed before March itself,hence SWM was not affected much. In 1982, 1991 & 2004
ELNINO were weak and ENSO values around 0.7 and 0.8 hence not affected the SWM rainfall in Chennai.
B. SWM Failed in 1951, 1953, 1969, 1972, 1987, 1997, 2002 & 2009.
·
Except 1972, 1987 & 1997, all other years ELNINO was at developing stage like 2014, these unsettled condition impacted SWM performance. These years there was a strong ELNINO developed before May itself, even though 1972 was positive IOD year could not help SWM.
2. North East Monsoon:
During 14 ELNINO years, NEM failed 8 times and succeeded 6 times.
A. The success was in 1969, 1972, 1987, 1997, 2002 & 2009. ELNINO were strong. All years IOD & ELNINO were settled
by August or September and continued with same value till the onset of NEM.
B. The failure years 1951, 1953, 1957, 1963, 1965, 1982, 1991 & 2004. These years IOD were inconsistent and Neutral during August and September, hence NEM failed. Except 1982 all other years IOD was neutral. In 1982 ELNINO formed in July itself.
To Summarise SWM:
1. If ELNINO developed before SWM and Positive IODdevelops after onset then SWM will succeed
(E.G. 1963, 1982, 1991), Positive IOD should set in between Jun-July,not early or late, even if it sets in August
will derail SWM performance, (E.G.1987).
2. If ELNINO developing during SWM then Positive IOD developed after onset can support SWM.
3. If ELNINO and Positive IOD both developed before onset of SWM, then SWM will fail.
To Summarise NEM:
1. If ELNINO & Positive IOD formed before August and continued till NEM, then NEM does not succeed.
(E.G. 1963, 1982 & 1991)
2. If ELNINO formed earlier and Positive IOD gets settled by September, then we will get good NEM.
(E.G. 1972, 1987, 1997 & 2002).
3. If ELNINO formed in August and settled in September, then even if IOD is neutral till September, then also NEM successful. (E.G.1969 & 2009).
Same information is posted as Guest here, is it a repetition
that is deleted, the above is updated one.
But it is still reflecting in the name of Guest, I think only the moderators can delete completely.
then El nino is not an advantage to NEM?
south indian ocean stays calm for last few days..hopefully tat marks the end of their cyclone season. its time for ITCZ line to climb up north
hi selvan,already summer onset happened in north indian ocean,i donno why ITCZ is still in south indian ocean,anyways,where is ITCZ exactly now?
it is not seen clearly but am sure it wont be in s.hemisphere.. it shld b somewhere near equator by tis time(seasonal position).. in next 15 days of time it will b seen in south bay
then selvan i think we can expect a cyclone taking birth from ITCZ,is there any chance of LAILA like cyclone in April or May to bring rain to TN,AP?
its quite normal to expect lp system forming by early may around the low latitudes of bay.. as far as tn/ap is concerned, system shld form very close to the coast or southwest bay.
ok.but its some what unlikely scenario in may.
It had happened but not very often.
ecmwf long range forecast for swm considering the april conditions are out, and tis forecast carries very high importance.. highlights of the forecast
1.elnino threat remains same for swm .
2.n.tamilnadu, south ap, gujarat and most nw parts of india r likely to see below average rains
this was expected by me, sel i have given this forecast couple of weeks back in SWM 2015 thread,
the same one, NW, Central and South India will get deficit rainfall.
april rains are always dangerous.
fine partha.. anyway tis is model generated forecasted not a statistical one.. something beyond us
So we will be under 38-40 degrees till October?
till july
no if this monsoon is failure means then it will be hot until october itself it is this monsoon which prevents the heat (2009 is an example it was hot because of no rains)
Didn’t we already get above average rains considering yesterday entire ntn coast inc Chennai tiruvallur kanchi dist also telengana ??
yes jon. tis rains for tn is expected to continue till may.
cfs expecting above normal ssta in s.indian ocean and below normal sst along most parts of n.indian ocean during core swm months,,tis is too bad. tis kind of conditions had led to monsoon failure in past years
Sel,
The east equatorial IO is hotter, did you check that, means negative IOD till August, not promising for SWM season.
tis one is expecting negative iod and ecmwf expecting positive iod .
but 2013 was not an ELNINO year
still i wont agree with that. 2013 was negative iod year. monsoon was very good
cfs is contrary to ecmwf forecast for past few months in sw monsoon foreshadowing.. they r expecting normal rains for entire india and infact above rains for west coast, parts of east,northeastern areas http://www.cpc.ncep.noaa.gov/products/CFSv2/imagesInd3/glbPrecSeaInd3.gif
Lol ultimately ECMWF will win
Oho
There is another advantage for Chennai and TN is that, during ELNINO years if SWM fails, then NEM performs well.
In the featured comment, you can see that attachment for your reference.
Pacific may be primed for powerful El Nino
https://img.washingtonpost.com/wp-apps/imrs.php?src=https://img.washingtonpost.com/blogs/capital-weather-gang/files/2015/04/cfs-klotz.jpg&w=1484
https://img.washingtonpost.com/wp-apps/imrs.php?src=https://img.washingtonpost.com/blogs/capital-weather-gang/files/2015/04/heat-content.jpg&w=1484
El Nino is officially here and forecasters say it could grow substantially stronger in the coming months.
El Nino refers to the episodic warming of ocean temperatures in central and eastern tropical Pacific, which has ripple effects in weather systems around the globe. For example, its presence tends to decrease Atlantic hurricane activity, but increase fall and winter rains in California.
Forecasting the present El Nino has proven to be a humbling experience. Last spring, the National Weather Service assigned favorable odds for its arrival by the fall, which never happened. A lack of sustained westerly winds, required to transport warm water from western to eastern tropical Pacific, was one reason.
But now that El Nino conditions are firmly established, forecasters are somewhat more confident the stage is set for intensification.
Phil Klotzbach, a climate researcher at Colorado State University who studies the effects of El Nino on Atlantic hurricane activity, points to several indicators suggesting El Nino will strengthen, and perhaps substantially.
In March, Klotzbach says, a burst of westerly winds – the strongest since 1997 – ripped across the tropical Pacific. Although a similar burst – almost as strong – occurred in the 2014, the winds did not persist. “This year’s westerly wind burst was longer-lasting and more intense than last year’s event,” Klotzbach says.
Klotzbach adds the tropical atmosphere and ocean is much better conditioned for El Nino compared to last year. “The upper ocean heat content is higher,” he says. “This means that there is more fuel for the El Nino to develop. In addition, upper and lower-level winds are more El Nino-like, especially when you look at the longer-term average..
El Nino conditions have fluorished in recent weeks says Paul Roundy, a professor of atmospheric sciences at the University at Albany. “[B]uoy observations suggest that the growth rate of El Niño conditions over the last few weeks is larger than any past event at this time of the year, even larger than the big event of 1997,” Roundy says. “[T]he present amplitude, when compared with signals at the same time of year, for growing events, is the largest in the historical record going back to 1980.”
Roundy calls for an 80 percent that strong El Nino conditions will develop this June and July and continue into next winter.
Elnino Alert
Early to fix El Nino’s impact on rains: IMD
Read more at:
http://economictimes.indiatimes.com/articleshow/46884103.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst
El Nino risks rising in India this year, to hurt food inflation: Nomura
NEW DELHI: The El Nino risks for this year is rising in India and it could result in sub-par rains, hurting rural demand and food inflation in the country, says a report.
According to the Japanese brokerage firm Nomura, the possibility of El Nino conditions is developing this year and this could possibly push food inflation temporarily higher.
El Nino conditions often, although not always, result in below-normal rains and hence suggest risk of sub-par rainfall during the monsoon season (June-September).
The Australian Commonwealth Bureau of Meteorology’s Southern Oscillation Index (SOI) dropped to -11.2 in March from 0.6 in February. A sustained SOI reading below -8 indicates El Nino conditions.
The bureau has raised the possibility of El Nino conditions developing this year to “at least 70 per cent” from 50 per cent earlier, Nomura said.
India’s agriculture economy is already reeling under the pressure of consecutive bad kharif (summer) and rabi (winter) seasons.
darn central/south central bob blooming with activity
Temperature Today in Tamilnadu & Puducherry (16.04.2015)
Trichy
35
24.6
Tirupathur
34.8
24
Kanyakumari
34.1
24.7
Palayamkottai
34
24
Vellore
33.8
23.9
Karur Paramathi
33.8
20
Chennai Nungambakkam
33.7
25.4
Madurai
33.6
22.9
Cuddalore
33.3
24.7
Salem
33.2
23.1
Puducherry
32.6
24.4
Chennai Meenambakkam
32.6
24
Coimbatore
32.5
22.6
Dharmapuri
32.4
21
Adirampatnam
32.1
24.2
Pamban
31.3
23.7
Tondi
30.8
24
Karaikal
30.7
25.2
Nagapattinam
30.3
25.5
Thoothukudi
30.1
22.1
Parangipettai
–
25
Valparai
25.5
15.5
Coonoor
20.2
14.2
Kodaikanal
18.1
11.8
vellore again top five….
April rains in ELNINO year and its impact on SWM season.
Rainfall average over Chennai district.
is it…