Indian Weather Man (IWM)

Yesterday's circulation over S-E Arabian sea has moved west and active in upper-levels only ... http://ow.ly/i/aun6s 

Today, at low-levels 850hpa, a circulation is seen over Bihar, N Bengal.
And
Low-level N-S trough seen from N Chatisgarh to S,S-W Karnataka.
At surface-levels a good N-S trough seen from E Madhyapradesh to N-E Karnataka and N-W Andhra ... http://ow.ly/i/auniC 

In 24 to 36hrs, the low-level circulation over Bihar is expected to persist and drift West ... http://ow.ly/i/aunm3 
Meanwhile, the low-level N-S trough from E-central India to S Karnataka to persist till Friday night ... http://ow.ly/i/aunpp 
On 25-Apr, this N-S trough is expected from Punjab to S Karnataka ... http://ow.ly/i/aunrA 

On Friday, good surface level circulation expected along S,S-central Andhra ... http://ow.ly/i/aunup 

The expected upper-level trough from E-central India to S,S-W Karnataka and to Lakshadweep will take shape in 24hrs http://ow.ly/i/aunyC 
Upper-level N-S trough will be slightly slanted to S-W and will drift East towards West Bay, N-E India on 25,26-Apr http://ow.ly/i/aunDv 

Rainfall forecast 
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Today, scattered HEAVY T showers for W-ghats,W,S-W,S,central Karnataka, W-ghats, interior Kerala to W-ghats,N,N-W Tamilnadu.
Today again... Nor'westers for S,central,N-E Odisha, E Bihar, N,central Bengal ... http://ow.ly/i/aunOv 
Today evening into midnight...
HEAVY T showers for S,central,N-E Andhra and over S-E,E Karnataka .. http://ow.ly/i/aunTE 
Today before midnight...
Some scattered T showers also for S,central chatisgarh
AND
Heavy T showers for many zones of N-E states.