SW monsoon Advances into Tamil Nadu, Chennai to get rains today

This forecast is valid from 8.30 am on 12.06.2015 to 8.30 am on 13.06.2015

An embedded Upper Air circulation in a trough lies in Odisha and the trough extends from the Odisha to TN coast causing LWD upto Tamil Nadu and also wind confluence forms along 13 N latitude. An weak UAC also lies off TN coast. Adding to the above, there is high moisture both in land / off the coast. As there is UAC of the coast and aswell as LWD, Rains may come from coast too.

With so many positive factors, all ingredients are there for a perfect rainy day. Core Chennai is long due for Rains and Tomorrow might be our day. The precipitation chart of two leading Numerical models are given below. Both show Evening/Night Rains.

GFS - 12th June 2015 night

ECMWF - 12th June 2015 night

1,456 thoughts on “SW monsoon Advances into Tamil Nadu, Chennai to get rains today

  1. Pounding should start in next half hr..full Chennai..ts moving like fire ball all over city soon..

  2. Just came back after a long day of work. Feeling refreshed to see the comments….PJ sir..hats off to you,whether it rains or not..I like your way of prediction..

  3. What about pop up nr avadi ? Near by areas like ambatur. Padi . annanagar should have started or yet to begin??

  4. folks, weather proved predictions are wrong. its pouring in chennai, guindy now. Thunders are heard. wind anomalies need to be studied better. popups from nowhere . good start for the day.

  5. Nanganallur was battered for the past 1 hour and 30 minutes. Very heavy rains. Easily would have crossed 50 mm. Anyhow will have to check my RG in the morning 🙂 Smashing rains.

  6. the rains forecasted for today,do they need heating effect ? or just moisture is alone sufficient for T.S to get developed?

  7. Passing showers in Mogappair West….hope the rains are wide spread and more intense than this tomorrow(Friday)..Good Night

  8. Good rains in triplicane. Atlast we have had rainy night after long long time. welcome SWM. super wet months are on the way.

  9. Wat a rain it has been in thiruvanmiyur, a surprise showers though it was moderate it would be in cms

  10. Today’s Forecast

    1) South TN below Madurai will get rains

    2) North Interior TN will have isolated heavy rains

    3) CHENNAI will have cloudy weather, some places will register drizzles / rains (mostly isolated)

  11. Around 4 pm I mentioned possibilities of “Midnight Masala” yesterday and that has happened. It all started with big thunder in my area around 2 am. and continued

  12. Jon…adam could b 2 to 3 cm..it was post mid night masala..mind gauge not at d best to measure..but d sound of rain made me so happy…

  13. Forecast for chennai today.

    Heavy to very heavy rains with isolated extremely heavy rains would occur @western and North west and south western parts of chennai could range between 100-120 mm or more. North chennai areas like, perambur, parrys, thiruvittyur, George town could see heavy rains ranging between 60-80mm.and southern parts of city could see heavy rains ranging between 50-80mm.
    This forecast is based on various models

  14. Looks like chennai has got some rains in midnight. Today the chances are more for Thundersquall around Chennai.
    Now the time comes for Chennai to get Rains and we might see daily lightnings over west.

  15. Rains in the Core City. Atlast City breached.

    Tharamani – 27 mm
    Meena – 23 mm
    Sholinganallur – 23 mm
    Guindy – 13
    Kolapakkam – 7 mm
    Nunga – 6 mm
    Mylapore – 3 mm

  16. Heavy thunderstorms likely in interiors again, and they might, flank towards east like last night today as well.. Chance for morning rains tomorrow

  17. Good Morning everyone.

    Happy to see chennai got some decent rain in the night.
    Good to see everyone happy.

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