Yesterday saw a spike in temperatures across most parts of Tamil Nadu with most of the IMD observatories recording their hottest day of the year. While Madurai City observatory recorded 40°C the Airport observatory recorded 39.6°C. Trichy AP & Karur Paramathy also recorded 39.3 & 39°C respectively while Chennai AP missed out on the first 100°F day of 2018 narrowly recording 37.6°C.
In a classic case of Weather being a step ahead of humans almost always yesterday saw convective thunderstorms develop in a few parts of Interior Tamil Nadu with hailstorms reported around parts of the Jawwadhu Hills in Tiruvannamalai district. A weak convergence of winds of different moisture creating unstable conditions and aided by the day time heating triggered these thunderstorms yesterday and possibly similar conditions exist today as well for some isolated thunderstorms once again. The broken Eastern Ghats around Yercaud / Jawwadhu Hills along with the mighty Western Ghats providing a lift for the thunderstorms to develop cannot be ignored in this context.
Numerical Models indicate a large parts of Central & South TN to see max temperatures in the region of 39 / 40°C around the districts of Tiruchirappali, Madurai, Virudhunagar and parts of Thoothukudi, Karur & Pudukottai districts as well. The early part of the day shows land breeze from the North bringing in the heat from the interiors playing a role in the increased heat quotient in these parts of TN.
Rayalaseema will possibly start playing catch up over Summer as places around Anantapur / Kadappa start seeing hot days leading up to the peak summer around April end / May first fortnight.
The Suburbs of Chennai could see temperatures around 36 / 37°C as the sea breeze possibly sets in after 1 PM while the city area could see slightly lower temperatures.
On the occasion of World Meteorological Day we at COMK wish to reiterate our commitment to play our small bit in helping the society become “Weather-ready, climate-smart”