Semma day for Thunderstorms in TN Veppasalanam regions & KTC will rock as usual

June 24, 2020
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Active Thunderstorms day for TN with weak monsoon in place. Chennai and KTC, Kovai, Salem, Vellore,Delta, Pondy,  Cuddalore, Villupuram has chance of rains Thanjvur, Trichy, interiors part of Thoothukudi and more districts. With weak monsoon, UAC has formed this side in South West Bay of Bengal close to Tamil Nadu.
24.06-1
KTC and Chennai again watch out in West, Storms are building and get ready for early action today.
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Tried to put up a short video on upcoming UAC based Veppa Salanam rains and the monsoon to be active in Kerala and Western Ghats from 26th June.

Forgive for olarls…its been longtime and not planned.




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Two sides UAC and North TN favorite winds remains. High waves alert for Kerala & South TN from 15-18th October

October 13, 2021

Perfect NW winds for rains in Ranipet, Vellore, Tvmalai, Tiruvallur, Kancheepuram, Chennai, Chengalpet, Cuddalore Pondy, Salem, Tirupattur, Pondy, Villupuram & nearby districts including Delta belt will catch rains. UAC and both sides always proves to be beneficial to TN during the transition period and last one week rains have proved the same.

Guidance to Fishermen in Kerala and South Tamil Nadu

Between 15 to 18th October, very rough seas will seen in Lakshwadeep Sea, Comorin (Kanyakumari) Sea, South Gulf of Mannar, and in seas in South Kerala and South Tamil Nadu. Fishermen in south Kerala, Kanyakumari, Thoothukudi, Tirunelveli and Ramanthapuram are advised to follow the alerts given by the official agency and not venture into Sea, as the sea will be rough with high waves and sudden gusts of high winds.

Onset of North East Monsoon – delayed onset

With SWM still active and this UAC persisting in Bay of Bengal, the westerlies will be there till 20th, hence normal onset (15-20th October) is not possible this year. Onset is possible between 25 – 31st October.

(courtesy – Windy.com 85 hpa winds)

Fastest Century by Tamil Nadu

Our normal North East Monsoon rains for Tamil Nadu is 447  mm. What a start we have got thanks to UAC near TN coast in 1st week and now the locked winds with UAC at either side. This has been a boon to Tamil Nadu and Kerala with both getting massive rains in 1st 13 days of NEM (any rains from October 1st will be counted as NEM rains irrespective of onset).  Till 13th we have got near 120 mm of the 447 mm quota. Nearly 25% of the NEM rains for Tamil Nadu has been obtained even before start of the monsoon.

Data courtesy (IMD chennai)

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Dam levels in TN are poor & with great August ahead, levels are expected to improve

July 27, 2020

Though Tamil Nadu has got huge excess rains in this South monsoon, it does not reflect the dams levels in Tamil Nadu, it was in the leeward side of the Tamil Nadu which had got amazing rains in this season for past two months. The dam catchments areas in Valparai have got some rains and has  some decent storage in the Coimbatore dams such as Sholyar, Aliyar and Parambikulam belts. But the Bhavani basin in Nilgiris it was total flop till now, dams such as Upper Bhavani, Avalanche, Mukurthy etc have all got very less rains and has very bad storage levels. Not even single 100 mm in these season so far was surprise. Strong monsoon winds are needed in these areas to penetrate into the locked ghat valleys and when it does, there will be massive rains and will generate inflows. Kanyakumari dam levels are ok with excellent rains in May and early June rains. August looks good, there will be huge improvement in the next month update for sure.

Mettur dam levels depends upon the rains in the upper catchment in Kodagu and Wayanad and the dams in Karnataka are filling up fast, it will be just matter of time before good inflows start to come to Mettur dam with superb August ahead.

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