Fairly widespread rains were back in Tamil Nadu yesterday with many places in the state recording moderate rains. Coastal areas all the way from Chennai to Delta had spells of moderate rains while in the interior region Dharmapuri, Erode, Namakkal & Salem districts had evening and late night thunderstorms that brought relief not only from the rain perspective but from the heat wave conditions that were prevailing in the state.
Many places in and around Chennai recorded good spells of rains as well with Avadi recording close to 1 cm rains from the evening thunderstorms while Nungambakkam and Meenambakkam recorded about 7 and 6 mm rains yesterday. The temperatures after the rain dropped by almost 6 degrees at most places making it a very pleasant evening in the city for the first time this August.
The low pressure is now off the North Andhra Coast with the circulation tilting in a SW direction at heights. This has meant at mid troposphere level the circulation is off the coast of Tamil Nadu, well placed to bring in some rains to the state. In the meanwhile the low pressure is also playing a constructive role in bringing back the monsoon conditions over West Coast as well. It is creating a strong monsoon surge by dragging moisture across Peninsular India and is further aided by the Off Shore Trough that normally associates with Tropical Disturbance in Bay during peak monsoon time.
Rains are expected to continue in Tamil Nadu today as well with fair chance for rains in Coastal Tamil Nadu along with a few places in interiors also enjoying a good spell of rains. Under favorable conditions one or two places in the coastal belt between Chennai & Delta region could end up with moderate to heavy spell of thunderstorms.
Chennai is likely to see cloudy day mostly with spells of on and off rains leading to pleasant conditions for most of the day.