Northeast Monsoon continues to be active over Coastal Tamil Nadu with Delta districts enjoying another very good day of rains last night. While places to the North of Chennai saw heavy spells of rains last evening, on and off rains have been the order of the day since early morning in most parts of the city. Going by radar today is likely to be another day of spells of rains amidst breaks with heavy spells at times for most parts of Coastal Tamil Nadu.
The wind charts pretty much sums up the story for Coastal Tamil Nadu with strong moisture migration happening all the way from South China Sea in a classic monsoon surge. Add to it the synoptic support provided by the Trough of Low with embedded Upper Air Cyclonic Circulation and the disturbance expected to become a significant Tropical Cyclone by JTWC over the Malay Peninsula. Most Numerical Models are expecting this pulse to move into Bay of Bengal near Andaman and continue its journey towards the Indian Sub Continent.
Rains are expected to continue over Coastal Tamil Nadu with once again like the last couple of days the interior places also enjoying a fair bit of rains from the remnant moisture that gets carried across Tamil Nadu. Models indicate North Coastal Tamil Nadu including Chennai falling under a possible convergence zone which needs to be watched for possible heavy spells later in the day.
Places along the Western Ghats is expected to remain active with one or two places in line for a spell or two of heavy rains during the day.