Weather analysis at 2pm - "LOW over N.Bay, S.Bengal"

Today, a LOW with 996mb is seen almost over Kolkata, S.Bengal and N.Bay ... http://ow.ly/i/2UJ4Y 

Low,mid and upper level circulation associated with the LOW is also seen along N.Bay and S.Bengal
Here's the low, mid level circulation chart ... http://ow.ly/i/2UJiN 
And here's the upper level 500hpa chart showing the circulation over N.Bay, S.Bengal ... http://ow.ly/i/2UJmp 

Forecast
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During next 36hrs, the LOW is expected to push W, W-N-W and reach N.Chatisgarh, Jharkhand on 20-Aug http://ow.ly/i/2UJr1 

While moving W or W-N-W, the LOW is expected to strengthen during next 36hrs.

Before midnight today, HEAVY rain expected for N,N-W,central Madhyapradesh and N,central Odisha, S,W.Bengal.
HEAVY rain to continue for Bengal tonight and Heavy rain will then move into Jharkhand by morning of 20-Aug.

From today evening and next 24hrs, VERY heavy rain also expected over N-W.Madhyapradesh, E,S-E.Rajasthan
From now and next 24hrs, HEAVY rain also for S.madhyapradesh, N,N-E.Maharastra (Nagpur zone) 
By tomorrow noon, Heavy rain will be over E.Maharastra, N,central Chatisgarh, most of Jharkhand http://ow.ly/i/2UJFB 

Less rain expected for Maharastra coast during next 36hrs. Showers expected to pickup strength from morning of 21-Aug.
Scattered showers to continue for Karnataka coast and over Kerala during next 2 days.

Less rain forecast for Bangalore and #Chennai during next 2 days. A mini shower is not ruled out.
Today, there's a 30% chance of mini shower for some zones of #Chennai after 5pm.