STH Stormwatch (24Oct2016) : Storm in bay intensifies into a DEEP depression

Update 1 (25Oct2016) :- Cyclone 'Kyant is born

This is the second cyclone in the Bay in 2016 after Cyclone 'Roanu'

Praful Rao,
Kalimpong
Dist Darjeeling

STH Stormwatch : The storm in Bay of Bengal Intensifies into a Well Marked Low

Link to JTWC

Update from IMD on 16Sep2015 (evening)

"The well marked low pressure area over south Odisha and neighbourhood has concentrated into a Depression at 1130 hours IST of today, the 16th September over south Odisha & neighbourhood and now lay centred at 1430 hours IST of today near Lat.20.3°N and Long. 83.0°E, about 40kms northwest of Titlagarh and about 160kms southeast of
Raipur. It is likely to move west ­northwestwards during next 24 hours."

Praful Rao,
Kalimpong,
Dist Darjeeling

STH Stormwatch : Update on depression on 02Aug2015

Above satellite image has been obtained from Nepal MFD since the IMD website is not working from 05.00am till the time of this report.
The storm has moved over Chatisgarh but the image shows significant clouding over south Bengal. I have verified that it is not raining in Kolkata at least.

Praful Rao,
Kalimpong,
Dist Darjeeling

STH Stormwatch : Update on DEEP depression in Bay of Bengal (29Jul2015)

Placed above are images from JTWC (Google Earth) and the latest IR2 image from IMD of the deep depression in the Bay of Bengal.

Excerpt from IMD (0900h, 29July2015)
'The depression over northeast Bay of Bengal and adjoining coastal areas of Bangladesh & West Bengal moved southeastwards, concentrated into a deep depression and lay centred at 0530 hours IST of today, the 29th July, 2015 over north east Bay of Bengal and adjoining areas of Bangladesh near Lat. 21.0 ° N and Long. 91.0 °E, 160 km south­ southwest of Chittagong (Bangladesh). The system would move nearly northward and cross Bangladesh Coast on 30th forenoon between Long. 90.5 °E and 91.5 °E.'

Praful Rao,
Kalimpong,
Dist Darjeeling

NB: Italics are mine.

STH Stormwatch (25Jul2015) : Low pressure forms in NE Bay of Bengal. (UPDATED 27July2015)

South Bengal has been getting unusually heavy rainfall over the last fortnight or so, unfortunately there seems to be more rainfall in the offing with a low pressure forming in approx the area circled. The low pressure will intensify into a depression soon as per IMD's 'All India Weather Summary and Forecast Bulletin' issued on 25July2015 (night).

Praful Rao
Kalimpong,
Dist Darjeeling

Update 1.
As per All India Weather Inference (2000h, 26Jul2015 - Sunday)
The Low Pressure has intensified into a depression and may concentrate further into a deep depression. It moved westwards and is now close to Khepupara (Bangladesh). Likely to remain stationary there for some time.

 

Update 2 (27Jul2015)

The depression has remained stationary and likely to remain so for some time. It may intensify into a deep depression

STH Stormwatch (16Sep2014) : Reporting a Low Pressure in Bay of Bengal

IMetD excerpt

'A   low   pressure   area   has   formed   over   northwest   and   adjoining   westcentral   Bay   of   Bengal   and  coastal   areas   of   Odisha. Associated upper air cyclonic circulation extends upto 7.6 km above mean sea level
tilting southwestwards with height'

Updates will be posted as necessary

Praful Rao,
Kalimpong,
Dist Darjeeling

Heavy rain alert 22Aug2014 : more rain due

Excerpt from IMetD All India Weather Bulletin of Thursday (21Aug2014 - night) Meteorological Analysis (based on 1730 hours IST)

- The axis of monsoon trough at mean sea level continues to run close to the foothills
of Himalayas.
- The trough extends from Sub-Himalayan West Bengal and Sikkim to northeast Bay
of Bengal across Bangladesh between 2.1 and 4.5 km above mean sea level persists                           
                        _________________________________________
All this, in short means, is that a band of low pressure is almost stationary over the Darjeeling - Sikkim Himalaya and is resulting in continuous moisture feed to this area - which means more heavy rain in this region. 

The clouding in the IR satellite imagery of 0500h IST is consistent with this and at 0630h (22Aug2014) it is raining  cats and dogs here in Kalimpong.

Praful Rao,

Kalimpong,

Dist Darjeeling