6:30pm, Lots of T showers seen over S,central,W-ghats Karnataka, S-W Maharastra, S Tamilnadu ... http://ow.ly/i/6ZDbA 

Today, the low-level trough from Bangladesh to W-S-W Bay persists ... http://ow.ly/i/6ZApB
In next 24hrs, a low-level circulation is expected over S Tamilnadu and expected to drift West or W-S-W ... http://ow.ly/i/6ZAsU
WRF model suggests, on 25-Sep, low,mid-level circulation will be along S tip Tamilnadu, S tip Kerala ... http://ow.ly/i/6ZADz

An upper,mid-level trough seen from N Bihar to S Bengal, N Bay ... expected to persist and drift East in 2 days.. http://ow.ly/i/6ZBPo 
In 12hrs, an upper-level W.D trough is expected to touch N,N-central Pakistan and will drift East during next 2 days http://ow.ly/i/6ZBPo

Rainfall alert for next 42 hrs
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Before morning of 25-Sep...
T showers will persist over N,N-W,central,S, W-ghats of Tamilnadu .. http://ow.ly/i/6ZCd7 
Early hrs, morning of 25-Sep..
T showers expected along Kerala coast, S tip Tamilnadu and Lakshadweep.
Tonight, HEAVY T showers possible over N,central Bengal, Sikkim, N,central Bangladesh and into central zones of N-E states.

Due to W.D...
scattered rain for N Pakistan and into Kashmir, Himachal during next 24hrs !
Most of N,N-W,W,central India is expected to remain DRY during next 2 days !

Due to formation os circulation over S Tamilnadu..
HEAVY rain expected over S tip, w-ghats of Tamilnadu on 25-Sep ... http://ow.ly/i/6ZCwu 
25-Sep, noon, evening...
T showers again for N,N-E,N-W, central Tamilnadu, S,central Karnataka and S,central Andhra.

#Bangalore - 25-Sep, more HEAVY T showers expected for city, suburbs !
#Chennai - 25-Sep, from 11:30am to 5pm a localized T shower will pop over S-W,W,N-W suburbs.
Less rain expected for city and along coast !
#Chennai - Today afternoon rain over Pallavaram, Polichalur zone.
IWM Polichalur station records 12.9mm of rainfall.

Weather Instagram at September 24, 2014 at 04:51PM

Bangalore - 4:36pm, raining ! #weather

from Instagram

Weather Instagram at September 24, 2014 at 02:28PM

#chennai - 2:27pm, raining in Polichalur zone as well. #weather

from Instagram

Weather Instagram at September 24, 2014 at 02:24PM

#chennai - 2:25pm, Pallavaram ... Its pouring now. #weather

from Instagram

Weather Instagram at September 24, 2014 at 02:13PM

#chennai - 2:10pm, sharp showers with thunder now over Pallavaram zone. #weather

from Instagram

#Chennai - 2:17pm, Raining for past 15 min in Pallavaram.. now the rain is seen only in this zone, will move South. http://ow.ly/i/6Zu2x 

Latest analysis show that a low-level circulation persists over Bangladesh and its N-S trough seen upto W-S-W Bay http://ow.ly/i/6YPl4 
Now, GFS model suggests a low-level circulation to pop over S Tamilnadu, Comorin Sea in next 42hrs ... http://ow.ly/i/6YPJa 

During next 2 days the upper-level trough from N Bengal to N Bay is expected to persist ! ... http://ow.ly/i/6YPX6 

Before morning of 24-Sep, and noon,evening of 24-Sep..
Scattered T showers to persist over Tamilnadu, W-ghats kerala http://ow.ly/i/6YQ99 
24-Sep...
T showers for S,W,central Karnataka, W-ghats Karnataka and into S,S-W Maharastra.
#Chennai - Tomorrow again...
T showers expected for N-W,W,S-W suburbs and less rain forecast for city.
Scattered T showers for N-E Tamilnadu

Scattered HEAVY T showers will continue over N Bengal, Bangladesh and central, S zones of N-E states.

#Chennai - 4:10pm, having a HOT and Humid day!
Heavy T showers sweeping over W,W-S-W at 65 to 90km from city ... http://ow.ly/i/6YJba 
#Chennai - T showers seen over W,W-S-W is traveling South.
But before 10pm a T shower may pop over N-W,W,S-W suburbs of city !

3:30pm, Most of India is DRY.
Showers seen over central,S zones of N-E states ... http://ow.ly/i/6YJib 
3:30pm, T showers popping over S Odisha, S chatisgarh, N-E,S Andhra, S-central Tamilnadu ... http://ow.ly/i/6YJib

4:30pm, Scattered T showers seen over Odisha, S Jharkhand, S,central Bengal, W-ghats Kerala, Tamilnadu ... http://ow.ly/i/6XUmm 

#Chennai - 5:15pm, Heavy rain seen over N-W, W from city at around 35 to 60km.. and traveling S-S-W now, not expected to move into city.

Analysis show that 98B is almost fizzled out over N Bengal. Now a low-level N-S trough can be seen from N Bengal to S Andhra coast .
At 850hpa level, the N-S trough is seen from N Bengal to W-S-W Bay near to Tamilnadu coast ... http://ow.ly/i/6XRch 

At mid-level (700hpa) the N-S trough is seen from N Bengal to N,N-W Bay near to Odisha coast ... http://ow.ly/i/6XRhC 
At mid-levels, the anti-cyclone over S-central Rajasthan persists and will drift East in next 2 days !

An upper-level weak circulation is expected over Bihar in 24hrs and may persist with a trough slanting S-W upto S Chatisgarh for 48hrs.
Here's the plot of expected upper-level circulation over Bihar in 24hrs ... http://ow.ly/i/6XRs0 

In 24hrs, the low-level NS trough will get established from Bihar, N Bengal to S tip Tamilnadu.
In that N-S trough, a low-level circulation is expected to form over S Karnataka and S Andhra on 24-Sep ... http://ow.ly/i/6XRzf 

By Friday, 26-Sep... W-central India is expected to host an Anti-cyclone at 850hpa level ... signalling the Monsoon withdrawal !

Rainfall alert for next 42hrs
~~~~~~~~~~~~~~~~~~~~~~

Before morning of 23-Sep...
Scattered T showers for N,central,N-W,W, W-ghats Tamilnadu, W-ghats Kerala, W-ghats,S Karnataka.
Before midnight today, HEAVY rain expected over Nilgiris zone of Tamilnadu... http://ow.ly/i/6XSgg 
In Next 24hrs...
Scattered T showers will be over Odisha, S,central Bengal.
AND
HEAVY, widespread rain over N,central zones of N-E states.

23-Sep...
Again heavy, scattered T showers will pop over W-ghats of Kerala, Tamilnadu, Karnataka ... http://ow.ly/i/6XSvz 
23-Sep...
Scattered T showers for Bangalore, S Karnataka, N-W,N,N-central,central Tamilnadu.

23-Sep...

Some T showers will persist over Odisha.

And

HEAVY rain over N-E states will go down slowly from evening of 23-Sep.

23-Sep...

evening, late-evening - Heavy rain possible over S,S-central Andhra.

#Chennai - 23-Sep, noon, evening - T Showers possible for W,N-W,S-W suburbs than for the main zones of city !