Posted by: keaweather | December 24, 2011

Wait for the new system continues

Seems like the next system is expected to be stronger than first predicted. Will it come close to Chennai? Will need to wait for another 48-72 hours to know the exact path.


Responses

  1. no change in imd update

    Dated: 27.12. 2011 Time of issue:1330 hours IST

    Sub : Cyclonic Storm ‘THANE’ over southeast Bay of Bengal:-Cyclone alert for north Tamilnadu and south Andhra Pradesh coast.

    The cyclonic storm THANE over southeast Bay of Bengal remained practically stationary during past 3 hours and lay centered at 1130 hrs IST of today, the 27th December 2011 near latitude 12.00N and longitude 87.0.0E, about 750 km east-southeast of Chennai (Tamilnadu), 750 km northeast of Trincomalee (Srilanka) and 600 km west-northwest of Port Blair (Andaman & Nicobar island). The system is likely to move west-northwestwards, intensify into a severe cyclonic storm during next 24 hrs and cross north Tamil Nadu and south Andhra Pradesh coast between Cuddalore and Nellore by morning of 30th December 2011.

    Based on latest analysis with NWP models and other conventional techniques, estimated track and intensity of the system are given in the Table below:
    Date/Time(IST)
    Position (lat. 0N/ long. 0E)
    Sustained maximum surface wind speed (kmph)
    Intensity
    27-12-2011/1130
    12.0/87.0
    75-85 gusting to 95
    Cyclonic Storm
    27-12-2011/1730
    12.3/86.5
    80-90 gusting to 100
    Cyclonic Storm
    27-12-2011/2330
    12.5/86.0
    85-95 gusting to 105
    Cyclonic Storm
    28-12-2011/0530
    12.6/85.5
    95-105 gusting to 115
    Severe Cyclonic Storm
    28-12-2011/1130
    12.7/85.0
    100-110 gusting to 120
    Severe Cyclonic Storm
    28-12-2011/2330
    12.8/83.8
    100-110 gusting to 120
    Severe Cyclonic Storm
    29-12-2011/1130
    13.0/82.5
    90-100 gusting to 110
    Severe Cyclonic Storm
    29-12-2011/2330
    13.0/81.2
    90-100 gusting to 110
    Severe Cyclonic Storm
    30-12-2011/1130
    13.0/80.0
    90-100 gusting to 110
    Severe Cyclonic Storm

    • Landfall is likely between Marakkanam and Ennore. North Interior districts like Vellore, Thiruvannamalai & Krishnagiri may also get heavy rains as the system moves towards Arabian Sea.

  2. can anyone tell the mjo phase now ?

  3. kea, monsoondata update.

    rains on 28th dec

    15 cms for chennai
    1 cm for pondy

  4. Last 20 year cyclones which have crossed Chennai

    Previous cyclone which have crossed Chennai (DIRECT HITS) and are classified as DUDS

    1996 Chennai Cyclone
    ——————————-
    http://en.wikipedia.org/wiki/1996_North_Indian_Ocean_cyclone_season#Tropical_Cyclone_08B

    2005- Cyclone Baaz
    —————————-
    http://en.wikipedia.org/wiki/2005_North_Indian_Ocean_cyclone_season#Cyclonic_Storm_Baaz

    2010-Cyclone Jal
    ————————–
    http://en.wikipedia.org/wiki/Cyclone_Jal
    —————————————————————————–

    Cyclones which caused significant damages.

    1994 Chennai Cyclone
    ——————————
    http://en.wikipedia.org/wiki/1994_North_Indian_Ocean_cyclone_season#Severe_Cyclonic_Storm_BOB_03

  5. CHennai, Max, Min and rain forecast

    26/12/2011 29 18 0
    27/12/2011 26 21 0
    28/12/2011 27 24 5
    29/12/2011 28 24 30
    30/12/2011 28 24 43

  6. The well marked low pressure area over southeast Bay of Bengal has concentrated into a depression and lay centred at 1730 hrs IST of today, the 25th December, 2011 near latitude 8.5°N and longitude 88.5°E, about 1000 km southeast of Chennai. The system likely to move initially NNW, intensify into a deep depression and subsequently into a cyclonic storm during next 48 hours.

  7. How about cyclone Thane, the return of Jal

    • hope tat isnt the case :( :(

      • I too hope it doesn’t become a JAL. Lets welcome back the rains after after a long break.

  8. intensifying fast

    http://www.weatheronline.co.uk/cgi-app/satellite?LANG=en&STRUCTUR=_&CREG=igms&CONT=asie&BIG=1&ZEIT=201112251630&UP=1

  9. weather2 predicts wind speeds of 115kmph on 28th

    http://www.myweather2.com/Cricket/India/Chepauk-Stadium-Chennai.aspx?sday=0&eday=7

  10. http://www.imd.gov.in/section/satmet/dynamic/insatglobe-irc.htm

    is it now slightly moving down south southwest?

    • s i too feel the same.slight wsw movement

  11. its getting really cold outside.expecting a min of atleast 18

    • it is already 18 in bengaluru :P

      • its 21 currently at mina

  12. http://www.imd.gov.in/section/nhac/dynamic/obtrack.jpg

    TARGET CHENNAI

    • Then they should name it Jal 2

      • severe cyclone jal.history book still says it crossed chennai :D :D

        http://en.wikipedia.org/wiki/Cyclone_Jal

        • super :)

          • he he… :)

  13. I think blog will be active early tomorrow morning

    • Yes goodnight

    • KEA.

      The latest satellite picture reveals rapid intensificaiton of system. chances are very bright for north tamil nadu coast to get heavy rains for atleast 2 days from tuesday afternoon, as dense cloud mass spreads across bay. the present wind pattern at chennai looks like standstill indicates some trasnformation of winds over nearby coast. probably tomorrow early afternoon can throw more light onthis.

      ss.

  14. looking at the latest sat pic i think it has already attained cyclone status rapid intensification last 3 hrs n curving north west

  15. http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9211.gif

    Observed track by JTWC, Forecasted track will be available only after formation of cyclone. Probably by tomorrow AM it should be available.

  16. KEA.

    IMD has just announced about formation of depression about 1000 Kms south east of chennai. now there should be quick change over of winds to east from present north west. north westerly winds are strong, then the system would disspiate in sea away from coast in no time. as things stand still KEA wind gauge depicts north westerly winds over chennai region which can only act against the cyclone. this is quite strange a system that too in fag end of december. normally any december cyclone can only cross srilanka or gulf of mannar region. any way interesting to keep track.

    ss.

  17. http://www.monsoondata.org/wx/ezindia.s.html

    Nothing much for Chennai

    • forget about monsoondata. it predicted 600 mm of rain during jal cyclone

      • 750 mm for trincomalee by COLA

  18. lat gfs

    http://expert-images.weatheronline.co.uk/daten/proficharts/en/2011/12/25/basis06/swas/pr06/11122818_2506.gif

    yet another JAL!!!

  19. JTWC’s latest update –
    THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.9N
    86.0E, IS NOW LOCATED NEAR 9.6N 86.6E, APPROXIMATELY 430 NM EAST- NORTHEAST OF COLOMBO, SRI LANKA. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO HIGH.

  20. IMD’s track

    http://www.imd.gov.in/section/nhac/dynamic/obtrack.htm

    • that was arabian sea system

      • Kea- Pls see carefully..it is depression dated 25th dec 2011!

  21. http://www.imd.gov.in/section/nhac/dynamic/cwind.htm

    IMD has taken note of the system and predicts N.TN

  22. System moved north.
    But change its direction quickly.

  23. is tat following tis ??? if it so then it may recurve wen it lies s.east of chennai http://www.monsoondata.org/wx/india5.48hr.png

    • I am with you.

      Monsoondata, a reliable site.

      System will cross near to Chennai.

      Please give next update.

  24. i think its moved north past 10.5 n it seems

    image png 1159-16

  25. Surprise rains in tvpm.
    tvpm -8cm ; tvpm ap-6cm;

  26. http://www.bbc.co.uk/weather/1264527

    • i have seen that, i want to know how much will this affect Chennai?

  27. can somebody please see the latest BBC track and give their interpretation of its affect in Chennai

    • KEA, this system is going to dissipate in the sea. No use in interpretating its track… LOL. Nunga will recieve not more than 2 cm from this.

  28. WEATHER FORECAST FOR NEXT 36 HOURS (ISSUED AT 1600 HOURS ON 25th DECEMBER 2011) The depression in the South-west Bay of Bengal was centered about 750km East of Trincomalee at 02.00 pm today (25th) and it is likely to moving away from the island.

  29. If you look at the latest GFS correctly. Cyclone moves initially northwards and then the high pressure pushes the system S-W into south TN.

    Dont be suprised if the cyclones moves above Chennai Latitiude by tomorrow morning

    • ?????

  30. boat capsized in pulicat 25 feared dead cnn ibn

    • omg!

  31. Many predictions from all experts in the blog.very eager to know where the system makes landfall.Air is very colder.i guess if system nears us we should get warmer.why it is not happening?is it going away from us?last week we saw the system somewhere near western srilanka. now it is located north of srilanka.why it is happening? may be my queries are elementary but i would be happy if someone clarifies.

  32. WARNING FOR FISHERMEN VALID FOR NEXT 24 HOURS UPDATED ON 25.12.2011

    Strong onshore winds from Northeasterly direction speed occasionally reaching 45-55 KMPH likely along and off Tamil Nadu and Puducherry coast.

  33. someone hav voted ” landfall above andhra”…..

  34. Bad Weather Warnings – lol

    The depression in the southwest Bay of Bengal is located about 600 km East of Batticaloa coast at 08.00a.m, today (25th). It is likely to move in Northwestward direction slowly.

    Under the influence of the depression, intermittent rain, strong winds and very rough conditions are expected in the deep sea areas extending from Jaffna to Pottuvil via Trincomalee, and Batticaloa. Therefore, the fishing and naval community are kindly advised to refrain from their activities in the said seas.

    http://www.meteo.gov.lk/index.php?option=com_content&view=article&id=61&Itemid=70&lang=en

    Atleast Srilankan meteorology gives advance warnings….This will Fisherman who are venturing two-three days into Sea.

    Our Fisherman will be in mid-sea wen IMD safely issues warnings….

    I dont like their wait and watch approach when it involves peoples lifes.

    • 2 fisherman already missing off nagai coast

      • men*

  35. for fun i am predicting one track.IF THE PRESENT SYSTEM IN THE BAY OF BENGAL TURNS NORTH NORTH EAST AND AND IF IT HEADS TOWARDS MYANMAR COAST………..HOW MANY OF U HERE LIKE THIS TRACK?I HATE THIS TRACK AT THIS POINT OF TIME.

  36. Why still IMD predicts increase in rainfall only to south tamilnadu…………..can any one say

  37. almost every model predicts landfall south of chennai.so no worries as of now

  38. there is also a chance for landfall of the current system in bay of bengal around chennai but i think there is less chance for landfall between chennai and cuddalore further more as per jtwc track.i trust jtwc 99 percent….HOW MANY OF U HERE TRUST JTWC TRACK OF THE CURRENT SYSTEM IN THE BAY OF BENGAL?

    • They change their tracks often…..I have been seeing their model for three years.

      Even during Cyclone Laila they changes their track very often.

    • Out of 10 models, 1 model is telling it will move north..how to trust this ???

      But sometimes, the one may be 100% correct…

      But my view is first let the system get formed after we will know which model is predicting correctly..

      • wich model is tat?

        • As our frnd vanradhakrishna told…JTWC…

    • jtwc hasnt issued the track yet.tis is just a rough graph

  39. JTWC ALERT:

    its just a TCFA graphic…( Tropical Cyclone formation alert) …Still the system is not formed…then only we will get the correct warning graphic..

    So..Wait till tomorrow…No negative thoughts…Almost all model predict the system is hitting TN only…

    • No negative thoughts definitely but you also learn not to raise expectations in people’s minds. The very fact you keep postponing it means you raise suspicions. Better like KEA to have low expectations and get more rainfall than raise expectations and get nothing !

      • I haven’t raised any expectations in your minds.. the fact is happening..

        Last Week, many told NEM over, No rains from this system…

        Now what happened????

        • I am not questioning your wisdom of making predictions. I am all for more rain to Chennai from this NEM but I am just asking you to be more prudent in making a prediction. I have seen your predictions before and many have proved correct so you can relax.

  40. Compilation of Major Numerical Models for our Cyclone Thane

    ECMWF
    ————
    http://www.ecmwf.int/products/forecasts/d/getchart/catalog/products/forecasts/medium/deterministic/msl_uv850_z500!Wind%20850%20and%20mslp!72!Asia!pop!od!oper!public_plots!2011122500!!chart.gif

    GFS Model
    ——————
    http://expert-images.weatheronline.co.uk/daten/proficharts/en/2011/12/25/basis00/swas/boen/11122721_2500.gif

    CMC Model
    —————-
    http://expert-images.weatheronline.co.uk/daten/proficharts/en/cmc/2011/12/25/basis00/swas/slpw/11122818_2500.gif

    Nogaps Model
    ————————
    https://www.fnmoc.navy.mil/wxmap_cgi/dynamic/NGP/2011122506/ngp10.prp.072.swasia.gif

    Cola Model
    —————–
    http://www.monsoondata.org/wx/india3.72hr.png

    BBC Model
    —————-
    http://www.bbc.co.uk/weather/1264527

    UKMO Model
    ————
    http://expert-images.weatheronline.co.uk/daten/proficharts/en/ukmo/2011/12/25/basis00/swas/slpw/11122800_2500.gif

    RHMC Model
    —————–
    http://expert-images.weatheronline.co.uk/daten/proficharts/en/rhmc/2011/12/25/basis00/swas/slpw/11122712_2500.gif

    JMA Model
    ————–
    http://expert-images.weatheronline.co.uk/daten/proficharts/en/jma/2011/12/25/basis00/swas/slpw/11122800_2500.gif

    EFS Model
    ——————
    https://www.fnmoc.navy.mil/efs/dynamic/US058VMET-GIFwxg.EFS.no_ind_ocn_prob_precip_48.gif

    Taiwan NFS Model
    ————————-
    http://www.cwb.gov.tw/V7e/forecast/nwp/Data/NFS/NFS_11122506_D24D2S-RC_042.gif

    IMD Chennai WRF
    ———————-
    http://www.imdchennai.gov.in/pics72/72hrrain.gif

    NCMWRF
    —————-
    http://www.ncmrwf.gov.in/t574-model/forecast/rain2.htm

    IMD GFS
    ————–
    http://www.imd.gov.in/section/nhac/dynamic/nwp/48hgfs_925wind.htm

    IMD WRF
    ———–
    http://www.imd.gov.in/section/nhac/dynamic/nwp/48wrf_925wind.htm

    Thailand WRF Model
    —————————–
    http://www2.tmd.go.th/program/nwp_pro/UMtoGrADS/wrf_nwp-tmd_research/images/domain2/asia_prec3h/asia_prec3h23.gif

    Thailand Unified Model
    ———————————
    http://www2.tmd.go.th/program/nwp_pro/UMtoGrADS/images/glob_rainfall/globrainfall09.gif

    • Chance illai pradeep…

      Very Nice…

      • Thank u….

  41. http://www.kea.metsite.com/google.jpg

  42. Correction. Read as north west

  43. No.not at all..jtwc gave its initial movement tats it.they wil come up with track only wen it reaches atleast DD status….

  44. System is moving north east as expected. So it will cross close to chennai.

  45. If JTWC predictions come true.(.will not the WD and the HP in North keep the system down to TN?..I seem to be literally begging..) the trinity should fire at MCG to offer some solace to the Chennai based bloggers

    • If we dont get rain and somebody like Aruns1411 comes in here and triumphantly exclaims – “I told you NEM is over”. I am not going to login here till next NEM.

      • hahahahahahahahahahahahaha

  46. i think most likely landfall of the present bay of bengal system is between
    CHENNAI AND ONGOLE OR MACHILIPATNAM OR KAKINADA AS PER JTWC TRACK.but what in jtwc track they have specified one diagrammatic srtucture?can any one tell me about that clearly?

  47. SS seems to be bang on..JTWC takes it to south / Central AP..God..hope it is not another miss for Chennai?

    • There is so much information available. But they are simply unable to make one accurate prediction. First they said Boxing day then tuesday then wednesday then thursday. If you look at IMD they are being smart. They are trying to give this a low key event.

      For Sel’s sake and his hard work and the expectations he has raised one hopes we get a good downpour.

  48. FORMATION OF A SIGNIFICANT TROPICAL CYCLONE IS POSSIBLE WITHIN
    175 NM EITHER SIDE OF A LINE FROM 7.6N 87.3E TO 13.1N 84.1E WITH-
    IN THE NEXT 12 TO 24 HOURS. AVAILABLE DATA DOES NOT JUSTIFY IS-
    SUANCE OF NUMBERED TROPICAL CYCLONE WARNINGS AT THIS TIME. WINDS
    IN THE AREA ARE ESTIMATED TO BE 20 TO 25 KNOTS. METSAT IMAGERY AT
    251030Z INDICATES THAT A CIRCULATION CENTER IS LOCATED NEAR 8.8N
    86.8E. THE SYSTEM IS MOVING NORTHWARD AT 07 KNOTS.
    2. REMARKS: THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.9N
    86.0E, IS NOW LOCATED NEAR 9.6N 86.6E, APPROXIMATELY 430 NM EAST-
    NORTHEAST OF COLOMBO, SRI LANKA. ANIMATED MULTISPECTRAL SATELLITE
    IMAGERY SHOWS THE LARGE FORMATIVE BANDING MOSTLY TO THE NORTH OF AN
    ILL-DEFINED LOW LEVEL CIRCULATION CENTER (LLCC) HAS FURTHER
    CONSOLIDATED. THE MAIN CONVECTION IS BEING DISPLACED TO THE NORTH
    DUE TO MODERATE (15-20 KNOT) SOUTHERLY VERTICAL WIND SHEAR. THIS IS
    ALSO EVIDENT ON A 250824Z AMSU-B MICROWAVE IMAGE. HOWEVER, ANIMATED
    WATER VAPOR SATELLITE IMAGERY SHOWS GOOD POLEWARD OUTFLOW ENHANCED
    BY THE SUBTROPICAL RIDGE TO THE NORTH. RECENT SCATTEROMETRY DATA
    INDICATES THE STRONGER WINDS ARE AROUND THE PERIPHERY OF THE LLCC,
    CHARACTERISTIC OF A MONSOON DEPRESSION. MAXIMUM SUSTAINED SURFACE
    WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS
    ESTIMATED TO BE NEAR 1003 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A
    SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS UPGRADED TO
    HIGH.

  49. hey allllllllllllll.jtwc track.
    http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9211.gif

  50. BB-12 moves a bit North and is positioned 7.9N and 86E . Winds at 20-25 knts and pressure at 1004 mb. Track and strength will get organised from tonite as the system changes its direction and intensity. SST at 26/27c is just about favourable

    posted in indian weatherman

  51. Satellite Image looks awesum….

    http://www.imd.gov.in/section/satmet/dynamic/insatsector-ir.htm

    This image will look more better tomorrow… this sytem is going to be a severe one..

  52. Dear All,

    As expected JTWC has given a cyclone formation alert in their latest bulletin. As per their observations, the cyclone formation is between 10 north & 13 north and so long it gets intensified around 13 north, chances of big rains are less. however we can expect some moderate showers. It looks like a big system quite strange for late december.

    ss.

    • That last part I agree. Very very strange (VVS) for late December.

  53. As predicted , The system is hitting chennai & cuddalore..on Thursday Night..

    http://rajkmr.files.wordpress.com/2011/12/dec-29-1.jpg

    http://rajkmr.files.wordpress.com/2011/12/dec-29-2.jpg

    • Why the postponement ? You said light showers on tuesday and then heavy rain on wednesday. Why you postponing it now ?

      • i am not postponing it…i already told it depends upon the system movement only…this system takes more time to process …

        From tomorrow onwards it will start the movement…

        • Could it be that the anti-cyclone cold air is keeping this system slow ?

  54. lat gfs takes lt closer to chennai and it will cross the coast as a dep

    http://expert-images.weatheronline.co.uk/daten/proficharts/en/2011/12/25/basis06/swas/pr06/11122812_2506.gif

  55. winds getting stronger n its also pretty chilly

    • omg winds from W-NW

      • tats why its cold

  56. http://www.meteo.psu.edu/~gadomski/JAPAVN_0z/avnloop.html#picture


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