Archive · 19 Sep 2026
Depression Likely Over Bay as South Bengal Rain Continues
More rain may come to Calcutta and south Bengal.
Weather experts expect a low-pressure area to form over the sea on Saturday.
It could become a depression around September 21 or 22.
Here, a depression means a stronger type of weather system, not a feeling.
The system may move toward the coasts of south Odisha and north Andhra Pradesh.
Rain and thunderstorms are expected in south Bengal through September 24.
Calcutta had a strong thunderstorm on Friday with 33mm of rain.
Saturday may also be rainy, but the showers in Calcutta could be less intense.
A low-pressure area may form over the north Andaman Sea on Saturday.
The system has a high probability of becoming a depression over the east-central Bay of Bengal on September 21-22.
Forecasters expect it to move west-northwest toward the south Odisha-north Andhra Pradesh coasts afterward.
South Bengal is expected to receive fairly widespread light to moderate rain and thunderstorms through September 24.
Calcutta recorded 33mm of rain on Friday, while Salt Lake received about 65mm on Thursday and 11mm on Friday.
- Who
- The Met office and residents of Calcutta and south Bengal are involved in the forecast and expected weather.
- What
- A low-pressure area may develop into a depression, bringing more rain and thunderstorms.
- When
- The low-pressure area is likely on Saturday; intensification into a depression is most likely on September 21-22, with rain forecast through September 24.
- Where
- The system is expected to form over the north Andaman Sea and east-central Bay of Bengal, while rain is forecast over Calcutta and south Bengal.
- Why
- An upper-air cyclonic circulation over north Thailand is expected to move over the north Andaman Sea, where it may form a low-pressure area.
- Expected formation
- A low-pressure area is likely to form over the north Andaman Sea on Saturday.
- Possible intensification
- The system has a high probability of becoming a depression over the east-central Bay of Bengal on September 21-22.
- Expected movement
- It is very likely to move west-northwest toward the south Odisha-north Andhra Pradesh coasts over the following three to four days.
- Rain forecast
- South Bengal is expected to receive fairly widespread light to moderate rain or thunderstorms through September 24.
- Calcutta rainfall
- Alipore recorded 33mm of rain on Friday.
- Recent Salt Lake rainfall
- Salt Lake received about 65mm on Thursday and 11mm on Friday.
- Weather cause
- Friday's showers were linked to a trough running from Sikkim to the north Bay of Bengal across Bangladesh.