On a day when both IMD observatories crossed 38°C spell of Rains in Chennai over the evening brought much needed relief to the citizens of the city. With no major influencing factor the thunderstorms were triggered by a very active sea breeze front that was strong & sustained as it moved inland.
Yesterday though once again proved some of those days Rains in Chennai are indeed special because almost all of Tamil Nadu remained dry except for some light rains around Puducherry & Cuddalore stretch along with few stray storms to the West of Chennai. Today once again similar conditions exist with coastal areas between Delta & Chennai likely to see sea breeze induced thunderstorms which is likely to bring in sharp spell of Rains. The spells are likely to be short as Upper Level Westerlies are still strong making the thunderstorms move fast.
Yesterday once again saw most of Tamil Nadu remain abnormally hot with many IMD observatories showing max temperatures that were a couple of degrees higher than normal. Thiruttani recorded 4.5°C above normal for this time of the year while both Chennai observatories recorded 3.6°C.
Numerical Models indicate there is unlikely to be immediate respite from this spell of Hot Weather in Tamil Nadu with temperatures likely to stay like this until possibly middle of next week. Models also indicate temperatures to slightly notch up in North TN around Sunday / Monday which could be the peak of the current spell of hot weather.