Increase in temperature likely

Maximum and Minimum temperature will start to rise gradually as we head towards the peak summer season. Last week was pleasant thanks to the surprise showers where Meenambakkam recorded 104 mm.

412 thoughts on “Increase in temperature likely

  1. On 2014 april 17 temperatures
    Kothagudem 47.1
    Rentachintala 45.6
    2015 april 17 temperatures
    Kothagudem 34.9
    Rentachintala 35.7
    Wat a difference…….

  2. Areas SSE of Tambaram with a rainfall totals < 10 mm seems to be the only ones to have received some in the last 24 hours surrounding Chnai region .. the monsters have kept their presence to the west running south …..

  3. If definitive Elnino conditions develops with neutral/+ve IOD & neutral/cold West African coast’s Atlantic SSTs by the time of SWM onset, then it may not effect the SWM-performance badly. SWM-2015 will have normal performance (onset, progress & rainfall) unlike SWM-2014 (erratic & deficient).

    • ECMWF s forecast is not encouraging for much of North west India , and some parts of N India too…..
      Head Bay seems to be active , with some really above normal rainfall forecasted .,..Will have to look out for its effect in the Gangetic plains …..But much of it seems to be a retention in Bay ….

  4. JAMSTEC predicts the evolution of positive IOD through the boreal Summer and Fall….and a short peak in the fall season. If it happens as per the JAMSTEC predictions, then the post monsoon cyclone season could have an impact ,since a negative IOD in place till September/October is considered quite favorable compared to positive IOD conditions both in terms of sea surface conditions and as well as the upper level steering patterns ….

  5. Precipitation anomaly patterns forecasts from the JAMSTEC gives an idea of positive above normal rains for much of the equatorial Indian Ocean , and adjoining Sri Lanka and S.TN .Clear indications of last year repeat for NEM , with low latitude placement of equatorial trough and the rains….
    With lower rains predicted for Chennai and north coastal TN both during SWM and NEM along with El Nino being predicted , I fear we might end up in some real shortage of annual rains for Chennai this year…..provided the JAMSTEC s prediction takes a lead ….

  6. Varthur in blore east has received 2cm overnight. Banaswadi just 1mm. There was a small rain for 2 minutes..

      • North bangalore received decent rains too…. My RG recorded 7mm…. Kodigehalli 9.5mm, Byatarayanapura 9mm, Jakkur 8.5mm, yelahanka 10mm….. Yuktix AWS located near columbia asia hosptial on intl airport road got 18mm….
        My RG has now recorded exactly 100mm in the last 7 days….

      • Great. We have anyway received very hood rains so far. So okay to miss out one day. Beniganahalli at 17cm for the year. Hot and sultry now. Let us see if any thunderstorms today

      • Great. We have anyway received very good rains so far. So okay to miss out one day. Beniganahalli at 17cm for the year. Hot and sultry now. Let us see if any thunderstorms today

      • Have to look at the rainfall map. Looks like it rained everywhere leaving a hole over our area

      • Radakrishna ward only 1mm!!..should be atleast 5 mm in my place..again my home fell into southern tip of rain..

  7. On Monday, April 24, 1815

    The morning temp. in chennai was 11 deg C. On Apr 28, it had dipped to (-)3 deg C.
    There were unverified reports of snow falling too……

    (Interesting…. read it all in today’s Hindu – (SEction – Minimag – Page 4)

  8. Its getting better and better than NEM, Historic April Rains in Tamil Nadu, ending 8.30 am on 16.04.2015
    The cyclonic circulation over central parts of Madhya Pradesh & Neighbourhood persists and now extends between 3.1 & 4.5 kms a.s.l. The trough from central parts of Madhya Pradesh to Lakshadweep area now runs from southern parts of Uttar Pradesh to Comorin area extends between 5.8 & 7.6 kms a.s.l.

    The trough of low at mean sea level over south Andaman Sea and adjoining southeast Bay of Bengal now lies over southwest Bay of Bengal.

    Chennai gets 100 mm rainfall in less than hour. Entire Theni and Madurai district got battered. Tiruppur getting second day of 100 mm’s. Isnt the current spell better than NEM.

    in mm (min 50 mm)

    Periyakulam, Theni – 145
    Marudhanadhi dam, Theni – 140
    Taramani, Kancheepuram – 116
    Dharapuram, Tiruppur – 110
    Mulanur, Tiruppur – 108
    Aranmanaipudur, Theni – 107
    Theni, Theni – 106
    Chennai AP,Kancheepuram – 103
    Tirumangalam, Madurai – 102
    Vaigai Dam, Theni – 102
    Devakottai, Sivaganga – 100
    Erode, Erode – 99
    Komarapalayam, Namakkal – 94
    Bhavani, Erode – 91
    Kamatchipuram, Dindigul – 88
    R.S.Mangalam, Ramanathapuram – 82
    Palani, Dindigul – 81
    Aravakurichi, Karur – 81
    Thenkasi, Tirunelveli – 76
    Paluvidihi, Karur – 72
    Anna University, Chennai – 69
    Manamelkudi, Pudukkottai – 69
    Pulipatti, Madurai – 67
    Pennagaram, Dharmapuri – 65
    Manjalar, Theni – 65
    Andipatti, Theni – 65
    Vadakadu, Theni – 63
    Parapalar Dam, Theni – 63
    Aruppukottai, Virudhunagar – 63
    Madurai AP, Madurai – 63
    Upper Kodayar, Kanyakumari – 62
    Kadaladi, Ramanathapuram – 61
    Anaipalayam, Karur – 59
    Tiruppur, Tiruppur – 58
    Kolapakkam, Kancheepuram – 57
    Melur, Madurai – 54
    Usilampatti, Madurai – 52
    Sankarankoil, Tirunelveli – 51
    Ayikudi, Tirunelveli – 51
    Thaniamangalam, Madurai – 50
    Kovilankulam, Virudhunagar – 50
    Dindigul, Dindigul – 50
    Karur, Karur – 50

    Vagaries Rainman –

    Tamil Nadu Weatherman –

    Kea Weather Converse –

  9. Anybody noticing Kerala, its getting rainfall daily, ending 8.30 am 17.04.2015
    The cyclonic circulation over Lakshadweep area and neighbourhood has moved away westwards.

    in mm (min 10 mm)

    Pambla – 89
    Perinthalmanna – 66
    Thenmala – 60
    Punalur – 50
    Angadippuram – 49
    Idukki – 34
    Vadakkancherry – 34
    Munnar – 32
    Idamalayar – 30
    Neeriyamangalam – 24
    Chimoni – 23
    Poringal – 18
    Chalakudy – 18
    Ponmudi – 17
    Ottappalam – 17
    Palakkad – 13
    Pattambi – 12
    Myladumpara – 12
    Mannarkad – 11
    Vellanikkara – 10
    Vyanthala – 10
    Vazhathope – 10

    Vagaries Rainman –

    Tamil Nadu Weatherman –

    Kea Weather Converse –

  10. Tirupuvanam (Sivaganga Dist)


    Attur (Salem Dist), Thathiengrpet (Trichy Dist)

    9 each

    Grand anaicut (Thanjavur Dist), Mylaudy (Kanyakumari Dist), Virudachalam (Cuddalore Dist), Sethiathope (Cuddalore Dist)

    6 each

    Manamadurai (Sivaganga Dist), Thammampatty (Salem Dist), Ulundurpet (Villupuram Dist), Samayapuram (Trichy Dist), Tirumangalam (Madurai Dist), Lalgudi (Trichy Dist)

    5 each

    Madukkur (Thanjavur Dist), Sholavandan (Madurai Dist), Kamudhi (Ramanathapuram Dist), Valangaiman (Tiruvarur Dist), Airport Madurai (Madurai Dist), Sattur (Virudhunagar Dist), Arani (Tiruvannamalai Dist), Thuvakudi IMTI (Trichy Dist)

    4 each

  11. Mango Showers Continue in Karnataka without break, Rainfall ending 8.30 am 17.04.2015
    The cyclonic circulation over Lakshadweep area and neighbourhood has moved away westwards.

    in mm (min 20 mm)

    Balluru – 80
    Hoodi – 78
    Hosakere – 76
    Gangavarachow Dappanahalli – 65
    Thopanahalli – 61
    Abbenahalli – 57
    Bengaluru Kial – 55
    Maddur – 49
    Krishnarajapet – 46
    Honnudike – 41
    Halaganahalli – 41
    Thayalur – 40
    Seelunare – 40
    Dammaningala – 40
    Kadahalli – 38
    Anekal – 38
    Kudur – 37
    Hunsur – 36
    Magadi – 35
    Kanakapura – 34
    Halagur – 34
    Hoskote – 33
    Karadi – 32
    Mudabalu – 30
    Ravandur – 29
    Saggiam – 25
    Tekal – 24
    Kestur – 23
    Solur – 22
    Markandeyanakere – 22
    Kamasandra – 22
    Manchanbele – 21
    Malemahadeshwara Hills – 20
    Nelamangala – 20
    Shantigrama – 20
    Kundana – 20
    Anantapur – 20
    Masti – 20
    Thanakushanur – 20

    Vagaries Rainman –

    Tamil Nadu Weatherman –

    Kea Weather Converse –

  12. I cant recall a better April for Tamil Nadu than this year, Rainfall ending 8.30 am on 17.04.2015
    The trough of low at mean sea level over southwest Bay of Bengal persists.The cyclonic circulation over Lakshadweep area and neighbourhood has moved away westwards.

    in mm (min 20 mm)

    Hosur, Krishnagiri – 123
    Shoolagiri, Krishnagiri – 73
    Chittar II, Kanykumari – 57
    Valparai Taluk Office, Coimbatore – 55
    Perambalur, Perambalur – 53
    Palladam, Coimbatore – 40
    Puthen Dam, Kanyakumari – 39
    Suralode, Kanyakumari – 39
    Valparai PTO, Coimbatore – 38
    Perunchani, Kanyakumari – 38
    Upper Anaicut, Trichy – 37
    Thuraiyur, Trichy – 35
    Salem, Salem – 34
    Rayakottah, Krishnagiri – 33
    Chittar I, Kanyakumari – 32
    Denkanikottai, Krishnagiri – 32
    Kothagiri, Nilgiris – 28
    Thiruvidaimaruthur, Thanjavur – 28
    Sulur, Coimbatore – 27
    Tozhudur, Cuddalore – 26
    Nagapattinam, Nagapattinam – 25
    Sholayar Dam, Coimbatore – 24
    Karunkulam, Thanjavur – 24
    Barur, Krishnagiri – 23
    Tirupattur, Vellore – 23
    Pochampalli, Krishnagiri – 23
    Mettupalayam, Coimbatore – 22
    Chinnakalar, Coimbatore – 22
    Naduvattam, Nilgiris – 22
    Tirupathur PTO, Vellore – 21
    Tirumurthi, Coimbatore – 20
    Thalavadi, Erode – 20
    Krishnagiri, Krishnagiri – 20
    Sendamangalam, Namakkal – 20
    Mettur, Salem – 20
    Penucondapuram, Krishnagiri – 20
    Pollachi, Coimbatore – 20
    Chettikulam, Perambalur – 20
    Namakkal Nicra, Namakkal – 20
    Trichy Town, Trichy – 20
    Ichanvidudhi, Thanjavur – 20
    Golden Rock, Trichy – 20
    Trichy Junction, Trichy – 20
    Thenparanadu, Trichy – 20

    Vagaries Rainman –

    Tamil Nadu Weatherman –

    Kea Weather Converse –

    Flooded Hosur.

  13. IMD:
    The trough of low over
    southwest Bay of Bengal & neighbourhood and another over south Andaman Sea & neighborhood persists

  14. UAC gone Out of the country.. Now LAC is the only hope to bring some evening showers to interior regions

  15. Vellore Just 5.2 mm yesterday..(as of 8.30 am) Surprising, the radar images showed as though it would register big numbers…


    The report says..
    Conditions in the equatorial and east Pacific suggests a building El Nino in which waters of the west (and closer to India) cool down. This suppresses evaporation and cloud-building.
    Instead, the equatorial and east Pacific warm up. Resultant stormy weather and excess rainfall are driven away from Asia and towards the South American coast.

    El Nino has no direct cause-impact relationship with the Indian monsoon but has at times coincided with deficit monsoon as in year 2009.

    The forecasts for specific periods by these agencies are as follows:


    ECMWF – Below normal for Gujarat, northwest India and east India.

    IRI – No major deviation for whole country.

    UKMO – 40- to 60 per cent chances for below-normal for northwest, central and east-central India.

    APCC – (April-May-June) Excess rain for south peninsular and northernmost India.


    ECMWF – Largely below normal for west, north-west India and coastal Tamil Nadu.

    IRI – Below normal in parts of Gujarat and Jammu and Kashmir.

    UKMO – 40- to 60 per cent chances for below-normal for most parts of country going up to 60- to 80 per cent in some regions.

    APCC – (July-August-September) Below normal in west and northwest India.


    ECMWF: Below normal in west and northwest and more parts of Tamil Nadu.

    IRI – Below normal in peninsular India, Gujarat, Jammu and Kashmir, Himachal Pradesh, Uttarakhand.

    UKMO – Below normal in almost entire country except east-central, east and north-east India.

    Report courtesy[-The Hindu Business Line.)

  17. Can anyone please explain why vellore is reaching more temperature even though its altitude is 220 m high comparing other places in tamilnadu ???

    • this is ok boss…34 deg april…it is very bright n sunny not hot just came from a bike ride quite windy and nice n warm…loved it

  18. Huge thunderstorm over kodai,palani hills…dindigul and Theni dist will post good numbers tomo…

  19. North India, especially North west India along with Gujarat areas and Pakistan should be reeling under severe heat wave conditions in 2 spells …in the next 10 days, By 26th April Iran and west Pakistan should be bearing the hot hot days starting the season of severe heat waves that starts off the Arabian peninsula and moving eastwards …………

  20. Friends… i’m going to sweat like anything tomorrow… because i’m playing a cricket match in my academy. between 10 am – 2 pm it’s going to be very hot… I don’t know how tolerate that…?

  21. Will there be breaks in 100 mm’s in Tamil Nadu. 6 consecutive days Tamil nadu has recorded 100 mm.

  22. skymet still confident about normal SWM rains in 2015. Especially they are predicting excess SWM rains for south peninsular & northern India.

  23. Tamil Nadu Pre-monsoon rains – Isnt it like NEM figures. most of which were in last 6 days. Chennai 373% is the highest.

  24. Temperature Today in Tamilnadu & Puducherry (18.04.2015)

    Karur Paramathi
    Chennai AP
    Chennai Nungambakkam




  25. Tamilnadu Rainfall ending 8.30 on 18.04.2015 in Centimeters.
    South Tamilnadu Battered Heavily and But Vellore is Missing in the list though there is a Squall Yesterday Nearby it.

    Tirupuvanam (Sivaganga Dist) – 10

    Attur (Salem Dist), Thathiengrpet (Trichy Dist) – 9

    Grand anaicut (Thanjavur Dist), Mylaudy (Kanyakumari Dist), Virudachalam (Cuddalore Dist), Sethiathope (Cuddalore Dist) – 6

    Manamadurai (Sivaganga Dist), Thammampatty (Salem Dist), Ulundurpet (Villupuram Dist), Samayapuram (Trichy Dist), Tirumangalam (Madurai Dist), Lalgudi (Trichy Dist) – 5

    Madukkur (Thanjavur Dist), Sholavandan (Madurai Dist), Kamudhi (Ramanathapuram Dist), Valangaiman (Tiruvarur Dist), Airport Madurai (Madurai Dist), Sattur (Virudhunagar Dist), Arani (Tiruvannamalai Dist), Thuvakudi IMTI (Trichy Dist) – 4

    Mayanur (Karur Dist), Tiruchirappalli AP (Trichy Dist), Trp town (Trichy Dist), Kaveripakkam (Vellore Dist), Gingee (Villupuram Dist), Madurai south (Madurai Dist), Tirukattupalli (Thanjavur Dist), Keeranur (Pudukkottai Dist), Thuraiyur (Trichy Dist), Mettur (Salem Dist), Rasipuram (Namakkal Dist), Kodavasal (Tiruvarur Dist), Dharamapuri (Dharmapuri Dist), Yercaud (Salem Dist), Shencottah (Tirunelveli Dist), Thanjavur (Thanjavur Dist), Cheyyar (Tiruvannamalai Dist), Vallam (Thanjavur Dist), Trangambadi(or)tranqueb (Nagapattinam Dist), Illuppur (Pudukkottai Dist), Mudukulatur (Ramanathapuram Dist) – 3

    Vandavasi (Tiruvannamalai Dist), Bhoothapandy (Kanyakumari Dist), Chengam (Tiruvannamalai Dist), Perungalur (Pudukkottai Dist), Tirupathur pto (Vellore Dist), Tindivanam (Villupuram Dist), Coimbatore south (Coimbatore Dist), Orthanad (Thanjavur Dist), Ambur (Vellore Dist), Periyanaickenpalayam (Coimbatore Dist), Pechiparai (Kanyakumari Dist), Sirkali (Nagapattinam Dist), Kovilpatti (Toothukudi Dist), Mayiladuthurai (Nagapattinam Dist), Vadipatti (Madurai Dist), Gandarvakottai (Pudukkottai Dist), Srivaikuntam (Toothukudi Dist), Musiri (Trichy Dist), Ariyalur (Ariyalur Dist), Pullambadi (Trichy Dist), Gobichettipalayam (Erode Dist), Wallajah (Vellore Dist), K.m.koil (Cuddalore Dist), Vazhapadi (Salem Dist), Anaikaranchatram(KolliDam (Nagapattinam Dist) – 2

    Nagercoil (Kanyakumari Dist), Chinnakalar (Coimbatore Dist), Thuckalay (Kanyakumari Dist), Melur (Madurai Dist), Kovilankulam (Virudhunagar Dist), Dharmapuri pto (Dharmapuri Dist), Mangalapuram (Namakkal Dist), Papanasam (Thanjavur Dist), Kanyakumari (Kanyakumari Dist), Sivakasi (Virudhunagar Dist), Periyar (Theni Dist), Kumarapalayam (Namakkal Dist), Padalur (Perambalur Dist), Panchapatti (Karur Dist), Harur (Dharmapuri Dist), Pappireddipatti (Dharmapuri Dist), Tozhudur (Cuddalore Dist), Kulithalai (Karur Dist), Chittampatti (Madurai Dist), Perambalur (Perambalur Dist), Satankulam (Toothukudi Dist), Aruppukottai (Virudhunagar Dist), Melalathur (Vellore Dist), Bhavani (Erode Dist), Tirupattur (Vellore Dist), Valparai taluk office (Coimbatore Dist), Mettupatti (Madurai Dist), K bridge (Nilgiris Dist), Mannargudi (Tiruvarur Dist), Thiruthuraipoondi (Tiruvarur Dist), Thiruchuzhi (Virudhunagar Dist), Srivilliputhur (Virudhunagar Dist), Tiruchengode (Namakkal Dist), Omalur (Salem Dist), Polur (Tiruvannamalai Dist), Nilakottai (Dindigul Dist), Kumbakonam (Thanjavur Dist), Shoolagiri (Krishnagiri Dist), Kothagiri (Nilgiris Dist), Tiruvaiyaru (Thanjavur Dist), Thenkasi (Tirunelveli Dist), Vaniaymbadi (Vellore Dist), Eraniel (Kanyakumari Dist) – 1

  26. the hindu article….
    When Madras froze over

    Our city has only three seasons — hot, hotter and hell. Given this, would people believe me if I said that the temperature once dipped below freezing in our city, and that too, in the sweltering month of April? It would probably be dismissed as an April Fool’s Joke. And yet it happened exactly 200 years ago, in the last week of April 1815. The morning temperature was 11 degrees Celsius on Monday, April 24, and by Friday, April 28, it had dipped to minus 3 degrees Celsius. There are unverified reports of snow falling too but that may be an exaggeration.

    The cause of this freak phenomenon was the volcanic eruption of Mount Tambora in distant Indonesia. At that time, this was the tallest peak in the archipelago which formed that country, rising to a height of 4,300 m.

    Lava burst forth from it on April 10 and 11, 1815, with such ferocity that the explosion killed around 12,000 people and was heard 2,000 km away. It holds the record for being the largest volcanic activity ever in world history till date.

    What followed next is best described in Tambora: The Eruption That Changed The World, by Gillen D’Arcy Wood — “Tambora’s dust veil, serene and massive above the clouds, began its westward drift aloft the winds of the upper atmosphere. Its airy passage to India outran the thousands of waterborne vessels below bent upon an identical course, breasting the trade winds from the resource-rich East Indies to the commercial ports of the Indian Ocean. The vanguard of Tambora’s stratospheric plume arrived over the Bay of Bengal within days”.

    Madras was perhaps the first to feel it two weeks later, with the temperature dipping to freezing point, thanks to the aerosols in the volcanic cloud absorbing heat from the sun and the earth. Given that our public dons monkey caps and earmuffs in December each year, what was the fashion statement in freezing April 1815? There is, however, not one East India Company record that notes the reactions of the colonial masters or the people to this freak occurrence. There is also no mention of a tsunami. Pumice stone, however, washed up on the coast for a long while.

    What followed thereafter was not as pleasant as the cold weather. The ash cloud spread globally, making 1816 the ‘year without summer’. In Madras, and the rest of India, it also meant a year without monsoon. Crops failed, as they did internationally. Famine in India was followed by cholera, which is now directly attributed by scholars to the volcano. Over 70,000 people perished globally, due to Tambora.

    In August 1815, the brig Catherina — the first vessel from Java after the eruption — arrived in Madras.The Madras Courier interviewed the craft’s master for an eyewitness description of what happened. He also brought with him a bag of volcanic ash, which was forwarded to Calcutta for further analysis. But nobody linked the big freeze in Madras to the volcano!

  27. Thght for the day: Lets think about Groundwater…does it flow or stagnant? For example why is groundwater vry gud/at a better level in tambaram than in pallavaram? Does groundwater evaporate into/ thro rocks?

    • pallavaram rocky terrain. we did lot of Grond water test while preparing DPR for restoration of Pallavaram and Kilkatalai lake.

      • Very true that was the main reason we had leave chrompet-pallavaram after 25 years of life there, Mushrooming flats, rocky surface , virtually we had to depend on outsource water 8 months in a year

    • mostly in south TN like madurai and other patti’s around there for water one well is there the come take water in those villages,whereas in madurai many place with water lorries

    • Yes , here at my residence(Madambakkam, East TBM) the water is usually found within 20 – 30 feet in the bore well.

      Many of my relatives from core city get surprised with this and also the taste of water(of course technically water is tasteless ….etc.,), …

      • I am a regular visitor to Madambakkam, it is very true , also few years back there were even Paddy fields near the famous temple there

      • Sir even today there are paddy fields near the Dhenupureeshwarar temple(I guess u r saying abt. the same)

    • Rocky under ground makes distribution uneven ..sometimes we may get plenty of water sometimes only rock powder…. Soft soil underground makes water bed even…and spread is uniform

      • Heard that in London the increase in water table posing serious problems to infrastructure

      • Unless the even distribution if human population… We can’t expect the rise in n water bed…at some places excessive human population is exerting lot of pressure on natural resources..

  28. Thght for the day : Aircrafts produce about 10 trillion cubic feet of water vapour every year.
    Do you knw the amount of water vapour in a basktbll size cloud?

    • Nice to see you Chandru after a long gap? still in US? how is the weather there..We now have 4 to 5 bloggers there in US..

      • Hey Shiva.. am doing good.. been busy of i was just a silent visitor to this blog.. weather is much better here in New York.. today it is touching 77 F.. spring is well in here.. am visiting India in June ( Chennai ). So if you guys planning a meet that time i will join 🙂

      • Ohh nice to hear that..Enjoy your time there and do call us when you touch down..Will plan a meet for sure..Most Welcome…

      • Shiva… Its 80 F in New Jersey today and my neighbour says its a heat wave. I couldnt control my laugh..

      • In the year 1888 Madras was affected by four cyclones. The North East monsoon rain was unusually heavy, especially about the end of October. A considerable cyclone passed over Madras and Chengleput and a portion of the North Arcot District on October 31 st, on that day the rain was 9.2 inches and the daily velocity of the wind was 66 miles. A second storm, with its centre southward of Madras, also brought strong wind and considerable rain about December 13 th
        Account of the weather was furnished by the port officer is as follows: “The weather on the morning of 30 th was unsettled, but the barometer was steady and did not, at that time, indicate the approach of a storm. At noon the wind began to increase in force, and at 8 pm, the barometer began to be felt at first very slowly the weather became more unsettled during the night, with constant rain.
        The wind had now shifted to North West and increased steadily in force. At noon of the 31 st the weather was very stormy, and the barometer began to fall rather rapidly, the wind remained steady at north-west, and the squalls became more violent and were extremely severe between 6 pm and 9 pm. There was a lull of half an hour from about 9.30 pm to 10 pm and almost immediately after 10pm the wind began to come from east. The lowest reading of the barometer was taken very shortly after at 10.30 pm. The wind now blew for some time in furious gusts from the east and then shifted to south–south–east, at which it remained for some hours. It rained continuously for 49 hours from about 10a.m of the 31 st when the centre was probably nearly 150 miles distant, until 1 am of the 1st
        November. The rapid fall of the barometer which coincided with the period of frequent
        furious squalls of wind lasted from 6 pm, (when the distance of the centre was probably about 40 miles), to about 2 am. The outer storm area was from 200 to 250 miles in diameter from east to west and the inner storm area 80 to 90 miles in diameter. Cyclone of 19th to 27th 1889 December crossed the Madras coast and broke up in South India.

  29. Some more quotes on Madras Freeze.It looks like the Freeze happened every April between 1815 to 1818
    In southeastern India (Pant et al. 2 ), the total June-September rainfall in 1816 at Madras (13 °N)
    was, by contrast, about one standard deviation above the 1871-1988 normal (and similarly below
    normal in 1815). While the rainfall series for Bombay (19°N) only begins in 1817, the
    occurrence of famine (drought?) in Kutch (above) suggests that this western part of the
    Peninsula may also have been drier in 1816. With respect to temperature, Stothers (1984) notes
    that Madras experienced a remarkable cooling in the last week of April 1815: morning
    temperature stood at 11°C on Monday dropping to -3°C by Friday. (On the other hand, there
    was no drop at Canton, China.) In summer 1816, the temperature again dipped below freezing
    in Madras, which is almost unheard of (Rampino 1989). The annual mean temperatures for
    Madras (Stothers after Koppen 1873) show that values had fallen below the long-term (1800-40)
    mean in 1814 to a low in 1818, returning to above normal in 1821.

  30. nino 3 region showing increasting trend in warming so elnino modoki like conditions turning into a traditional elnino flavour.

  31. Tamil Nadu continues to record 100 mm rainfall, Rainfall ending 8.30 am on 18.04.2015
    The trough of low at mean sea level over southwest Bay of Bengal persists. Sivagana, Theni, Kanyakumari and delta got heavy rains. After Vellore, Chennai, Madurai, Salem, its the turn of Trichy to get battering.

    in mm (min 30 mm)

    Eravangalar, Theni – 120
    Tirupuvanam, Sivaganga – 101
    Kottar, Kanyakumari – 93
    Budalur, Thanjavur – 92
    Attur, Salem – 86
    Thathiengrpet, Trichy – 85
    Kammapuram, Cuddalore – 73
    Navalur Kottapattu, Trichy – 72
    Chittar II, Kanyakumari – 72
    Vathalai Anaicut, Trichy – 67
    Devmanagalam, Trichy – 66
    Grand Anaicut, Thanjavur – 62
    Mylaudy, Kanyakumari – 61
    Manalar Dam, Theni – 60
    Kuppampatti, Trichy – 60
    Virudachalam, Cuddalore – 59
    Sethiathope, Cuddalore – 57
    Thirupparankundram, Madurai – 56
    Budalur, Thanjavur – 52
    Chhittar I, Kanyakumari – 52
    Manamadurai, Sivaganga – 52
    Thammampatty, Salem – 51
    Ulundurpet, Villupuram – 51
    Samayapuram, Trichy – 50
    Tirumangalam, Madurai – 50
    Sembanarkoil, Nagapattinam – 48
    Puduchatram, Namakkal – 47
    Trichy Junction, Trichy – 46
    Manachanallur, Trichy – 45
    Lalgudi, Trichy – 45
    Madukkur, Thanjavur – 44
    Avalanche, Nilgiris – 44
    Sholavandan, Madurai – 43
    Gengavalli, Salem – 42
    Narikudi, Virudhunagar – 42
    Adayamadai, Kanyakumari – 41
    Thiruparappu, Kanyakumari – 40
    Kamudhi, Ramanathapuram – 40
    Madurai West, Madurai – 40
    Thottiyam, Trichy – 39
    Valangaiman, Tiruvarur – 38
    Madurai AP, Madurai – 38
    Nandhiyar Head, Trichy – 38
    Thiruverambur, Trichy – 37
    Manalmedu, Nagapattinam – 37
    Sattur, Virudhunagar – 37
    Arani, Tiruvannamalai – 37
    Thuvakudi, Trichy – 36
    Edappadi, Salem -36
    Mayanur, Karur – 35
    Trichy AP, Trichy – 35
    Trichy Town, Trichy – 34
    Salem, Salem – 34
    Virkanuar, Salem – 35
    Kaveripakkam, Vellore – 34
    Gingee, Villupuram – 33
    Madurai South, Madurai – 33
    Golden Rock, Trichy – 32
    Tirukattupalli, Thanjavur – 32
    Keeranur, Pudukkottai – 31
    Thuraiyur, Trichy – 31
    Mettur, Salem – 31
    Kalakadu, Tirunelveli – 30
    Rasipuram, Namakkal – 30
    Kodavasal, Tiruvarur – 30
    Dharamapuri, Dharmapuri – 30
    Yercaud, Salem – 30
    Shencottah, Tirunelveli – 30
    Thanjavur, Thanjavur – 30
    Pulivalam, Trichy – 30
    Thenparanadu, Trichy – 30

    Vagaries Rainman –

    Tamil Nadu Weatherman –

    Kea Weather Converse –

    Flooded Road in Kottar in Kanyakumari

  32. exactly on tis day in 2006, a surge of equatorial westerlies had an interaction with easterlies at lower level on south,southeastern parts of bay just 3 days prior to very severe cyclone mala genesis.. Indonesian archipelago may have some great role in pre monsoon cyclogenesis just like how lankan landmass influence nem cyclogenesis over sw bay.

  33. Periyakulam AWS (Theni Dist)


    Periyanaickenpalayam (Coimbatore Dist), Valparai pto (Coimbatore Dist)

    4 each

    Periyakulam (Theni Dist), K bridge (Nilgiris Dist)

    3 each

  34. GFS on 25th mid Night. Storms stop ahead of Chennai. But dont worry guys they will change. Chennai will get rains.

  35. GFS on 26th Morning. Big ball expected near Chennai. We are surely going get something. Hopefully Nunga gets something this time being close to sea

  36. Anyone has plans for travel on 26th morning. Please enjoy the rains. Its going to be cloudy day.

  37. PJ, We are flying back to USA from Hyderabad on 26th. Will there be any chance for the rain-wave to escalate in latitude till Hyderabad by 26th?

      • See the LWD in 700, 850 hpa its starting from Telangana. More than good chance for rains.

      • looks like that PJ. Pre-rain wave temperatures already peaking (crossed above 40 oC) in parts of AP. Just now i completed the drawing fro this month end rain-wave. will post within a minute.

      • Yes Rao, did u see the big HPA moving in. Already Gujarat and other central india covered. Check the OLR.

      • yes PJ. already seen. since yesterday we can see feel the heat wave in telangana too. temperatures further increases during next 3-4 days before cooling down by rain-wave.

  38. can the below image (drawn based on satellite pic) depict the early view of this month end rain-wave??? Nature will take its own course!!

    note: direction of arrow represents the moisture transport in to continental peninsular India??

  39. Temperatures increasing in Rayalaseema and Telangana………
    But this time the temperatures are more in telangana than rayalaseema
    Today kurnool Nandyal Nizamabad Ramagundam kothagudem medak shamshaabad cuddapah may record 39 to 40 today
    Many models forecasting the temperatures to raise to 41 to 42 this week and then reduce by sat an sunday due to some thunderstorm activity
    Hyderabad temperatures at 11 30
    shamshhabad airport 37
    Manuguru 39
    kurnool 35.6

  40. The almost full depth cyclonic circulation in the southern Arabian Sea currently , was a result of the dip in the Jet streams which was directly and indirectly responsible for the rains to much of the peninsular India last week. The rains were a combination of the common LWD , interaction of tropical and sub tropical flow patterns , etc…

    This large circulation in the Arabian Sea currently is seen extending well into the 200 hPa level…..This is a remnant induced pattern….at the fag end of the dip in the westerlies ….
    It is moving towards the Somalian coastline , with very little rain …………..

      • PJ, the first thing is that it is a wide one , not a concentrated circulation. It was just a circulation that had resulted because of different and opposite flows on either sides shaped by surrounding High Pressure environmental circulations.More important is that the air sea coupling factor is almost nil underneath it.
        If u see the lower levels u have no hint of any circulation coupling with this upper level circulation. Thus, the air sea coupling is almost not happening there. Only if u have a coupling of air and sea, we can see moisture being lifted into this vortex to develop and sustain with deep convection , which is not simply happening here.
        The surface level MSLP charts in the region does not show any considerable pressure drop too, and moreover the sea surface underneath it is having outflows from the HPA to the NNW of it, and that flow is least bothered and is not trying to get into this one as some inflow also…
        Dry air is already seen getting wrapped into , and with more on the way, the word convection will find no use ….

        To say in simple terms this vortex is just an empty cylinder with no fuel(moisture) , being mechanically rotated by surrounding cylinders, and not rotating by its own power(no latent heat release to rotate)

      • agree GTS on the wide circulation. But in lower 500 hpa. Its very concentrated. So it must be dry air as u rightly pointed.

      • Lower levels and sea surface conditions showing least response to upper levels of the Troposphere ……
        No significant sea pressure changes and very mild response in 925 hPa winds making an insignificant curvature of flows ….

  41. Kiran & Harsha,
    It looks like next rain-wave will be in particular for the coastal regions of AP including Khammam district. Overall the regions which doesn’t covered by last LWD will receive good amount of rains by next LWD.

  42. This much of heat will vaporize any moisture that will come in at the end of April… it is becoming very hot across TN and AP

    • heat will vapourize. But where will the vaporized air go. It will lift up and then they will get condensed and have to come down as rains. Rainman.

      • if it is mositure, it will rainman. It all depends on moisture at what level of height the moisture is and the lifting it has to do from that level.

  43. Rao, Last Year AP rains during April / May

    LPA pounds Andhra Pradesh, rainfall ending 8.30 am on 10.05.2014
    The low pressure area over north interior Karnataka and neighbourhood has become less marked. However, the associated cyclonic circulation extending upto mid tropospheric levels lies over north coastal Andhra Pradesh and adjoining Odisha and Chhattisgarh

    in mm (min 30 mm)

    Tadepalligudem – 172
    Kakinada – 146
    Nuzvidu – 143
    Mangalgiri – 115
    Tanuku – 115
    Kaikalur – 112
    Gudivada – 110
    Koderu – 108
    Rajahmundry – 105
    Koyyalagudem – 104
    Paderu – 95
    Narsapuram – 94
    Peddapuram – 93
    Vijayawada AP – 87
    Bhadrachalam – 86
    Mahbubabad – 85
    Yellamanchili – 79
    Yellandu – 79
    Polavaram – 77
    Tuni – 74
    Eluru – 73
    Nandigama – 68
    Chintapalli – 67
    Anakapalli – 63
    Guntur – 60
    Bhimavaram – 60
    Chintalapudi – 60

    • PJ, next rain-wave from LWD will mimic the above rainfall figures for the same regions i.e. central & Northern AP apart from Khammam district (Telangana). These regions doesn’t received significant rains form the recent past LWD that pounded Rayalaseema & Telangana with record breaking rains.

    • On that day Kunavaram recorded 204 mm
      Aswaraopet 186 mm
      Kajuluru 186mm,
      Varamachandrapur 176mm,
      Penamaluru 174 mm
      Tadepalligudem 172 mm.

  44. A line of wind discontinuity forming all along the west coast……..but winds coming from the BOB and Arabian sea does not have a lot of moisture in them…paticularly from arabian sea…

    The high pressue near andaman moved west…and helping in driving the winds more westerly…..from BOB…….

  45. wind discontinuity rising slowly near westen ghats…If the HPA near andaman moves NW …It helps to increase the inflow of moistured air……Today….thundestorm activity for western coast and adjoining areas..
    more rains for kerala and adjoining Tamil Nadu areas

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