The Low Pressure Area (LPA) over North-Central India has merged with the monsoon axis and its associated Upper Air Circulation (UAC) lies over Uttar Pradesh-Bihar. This will make the monsoon clouds and the resultant rains shift east towards Bihar, Jharkhand, east Uttar Pradesh, Chhattisgarh, east Madhya Pradesh, Odisha and West Bengal. North East India continues to get heavy rains with monsoon axis extending to Assam. Wettest place in the world, Mawsynram in Meghalaya received extreme rainfall of 409 mm in the last 24 hrs.
The equatorial waves such as Equatorial Rossby (ER) & Mixed Rossby Gravity (MRG) waves are seen to have established itself over Equatorial Indian Ocean and adjoining seas. The propagating waves have triggered a UAC over the Comorin sea and south east Bay of Bengal. This system will bring heavy rains to Kerala, Kanyakumari, Nilgiris, Coimbatore and other interior districts in Tamil Nadu as it traverses north towards the coast. Coastal districts will get only moderate rainfall.
Chennai will have a cloudy start to the day with max temp touching 34-35C. Rains are expected in parts of the city and suburbs.
Coimbatore will be pleasant throughout the day time with temperature around 31-32C and rains are forecasted later in the day.
Madurai is going to see a wet day with some places getting heavy rainfall. The max temp will be below normal at 34-35C .