The Upper Air Cyclonic Circulation(UAC) over east central Arabian Sea off Karnataka Coast continues to persist and is seen extending up to 3.1 km above sea level. Under its influence a Low Pressure area could form in the same area within the next 12-24 hours. Meanwhile, further to the east and north in the Bay of Bengal, another UAC is seen to persist near North Andhra Pradesh coast. Under the combined influence of these two circulations and the seasonal (Inter Tropical Convergence Zone/Seasonal Trough)ITCZ seen located in the region, the atmospheric flow patterns in the south peninsular region would continue to support convective cloud formations leading to Thunderstorms and rains across much of interior TN , south interior Karnataka and parts of Rayalaseema during the next 24 -36 hours. Meanwhile, the extreme south east Bay and the adjoining Andaman Sea is kept on a watch for a probable genesis of a “Tropical Low”.
Heavy Rainfall Districts:
Nilgiris, Coimbatore, Erode, Salem, Dharmapuri, Karur, Dindugul, Theni, Krishnagiri.
Moderate Rainfall Districts:
Delta districts, Chennai, Kanchipuram, Vellore, Thiruvallur, Villupuram, Thiruvanamalai.
City Forecasts:
Chennai will be cloudy, isolated areas may experience moderate rains, max. temp will be settling around 31 C
Madurai will have cloudy skies and rains could be expected in isolated places. Max. will be close to 29 – 30 C
Vellore will stay cooler at 29 – 30 C. Rains/Thundershowers expected in some parts of the city.
Coimbatore can experience some Thundershowers and day time max. will stay around 30 – 31 C
Trichy can expect some rains/Thundershowers and maximum temperature will hover around 31 C