91B - Inland and Expected to weaken in next 18hrs

Analysis as of 11:30am, suggests that the LOW pressure system 91B is now over N-E Karnataka and along W.N-W Andhra.
Here's the 11:30am, visible satellite shot, which shows ... Heavy rain along its N-E quadrant over N-E Andhra and into S Chatisgarh.
Meanwhile, moderate scattered rain continue along S,central coast Karnataka and N,central Kerala coast.

GFS suggests that during next 18hrs... the circulation will weaken and merge with the N-S trough running from S-E Uttarpradesh, N Chatisgarh to S Tamilnadu along S-E coast of India.
By tomorrow evening, this trough is expected to drift East into Bay along S-E coast of India, by that time the trough is expected from N Bengal, Bihar to South upto W,W-Central Bay.

In 24hrs, Another suggestion is that at mid-level (700hpa) the remnant of 91B is expected to be over Chatisgarh, Jharkhand and its trough is expected to dip South upto S-E Arabian sea.

*** Rainfall warning ***

As 91B is expected to drift N-E and weaken during next 24hrs...
Before tonight, HEAVY rain expected along it's S,E,S-E,N-E quadrants.
Before midnight, today, Scattered HEAVY rain expected over S,central,N-E,E Karnataka, most of Andhra, N,N-W,N-E,S-tip Tamilnadu and into S,central Chatisgarh, S Odisha.
After midnight and into morning of 10-May... more scattered Heavy rain for N,N-E,central,S,coast Andhra, N,N-E, #Chennai Tamilnadu and into S,central Chatisgarh, S,central Odisha.
Till tomorrow morning, scattered showers expected to continue along Kerala coast and along S,central coast Karnataka.
By afternoon of 10-May, T showers are expected to be back over W-ghats of Kerala and T showers also for most of Odisha.

#Chennai is expected to receive a T shower today before midnight or towards morning of 10-May.