Role of Ocean Heat Content in the Rapid Intensification of Cyclone Amphan (2020) over the Bay of Bengal

Role of Ocean Heat Content in the Rapid Intensification of Cyclone Amphan (2020) over the Bay of Bengal Author:Kritajno Bhattacharya Abstract   A major forecasting challenge in the North Indian Ocean is the rapid intensification (RI) of tropical cyclones, especially in the Bay of Bengal, where coastal communities are extremely vulnerable. The main indicator of cyclone intensification has historically been sea surface temperature (SST). Since it captures the total thermal energy available for cyclone growth outside of the surface layer, subsurface ocean heat content (OHC) has lately been acknowledged as a more accurate metric. This study examines how OHC contributed to Super Cyclonic Storm Amphan's (2020) quick intensification over the Bay of Bengal.We'll examine the atmospheric and oceanic factors that contributed to Amphan's abrupt intensification using Tropical Cyclone Heat Potential datasets, in-situ Argo float observations, and best-track records from the India Meteorol...

West Bengal Weather Forecast – August 1, 2025

West Bengal Weather Forecast – August 1, 2025
Date:- August 1st 2025
Time of Issue: 23:30 IST 31st July
Issued by:- Kritajno Bhattacharya 


Synoptic Situation:

Monsoon flow remains active over Gangetic West Bengal with moderate moisture incursion from the Bay of Bengal. Conditions are favourable for development of isolated thunderstorm cells, especially over South Bengal districts during late afternoon to evening hours.



District-wise Forecast for 01.08.2025 (Valid for 24 Hours)

South Bengal:

Kolkata, Howrah, Hooghly, North & South 24 Parganas:

Weather: Scattered moderate to heavy rain/thundershowers likely, particularly between 1600 and 2000 hours IST.

Max Temp: 31–32°C | Min Temp: 26°C

Wind: Light to moderate southwesterly, gusty during thunderstorm activity.

Warning: Possibility of temporary waterlogging in urban low-lying areas.


East & West Medinipur:

Weather: Light to moderate rain very likely. Isolated pockets may receive brief heavy spells.

Max Temp: 32–33°C | Min Temp: 26°C

Sky: Generally cloudy.


Bankura, Birbhum:

Weather: Rain/thundershowers likely towards evening with locally heavy rainfall possible.

Max Temp: 31–33°C | Min Temp: 25–26°C


Nadia, Murshidabad:

Weather: Light to moderate rain likely in some areas.

Max Temp: 32–33°C | Min Temp: 26°C

Sky: Cloudy to overcast.


Purulia, Paschim Bardhaman:

Weather: Isolated light rain or drizzle likely. Mostly dry periods during the day.

Max Temp: 33–34°C | Min Temp: 26°C




North Bengal:

Darjeeling, Kalimpong, Jalpaiguri, Alipurduar, Cooch Behar:

Weather: Widespread moderate rain. Heavy rainfall likely at one or two places, especially in foothill zones.

Max Temp: 24–26°C (hills), 28–30°C (plains)

Warning: Landslide-prone zones advised to remain alert due to continued rainfall.


Malda, North & South Dinajpur, Uttar & Dakshin Dinajpur:

Weather: Light to moderate rain likely in some areas.

Max Temp: 32–33°C | Min Temp: 25–26°C




 Outlook for the Next 48 Hours:

Rainfall likely to continue over South Bengal with intermittent thunderstorm activity.

Localized waterlogging may occur in areas with poor drainage.

No significant system over Bay of Bengal, but monsoon trough remains active near normal position.


.                Kolkata Doppler Radar Data at 5:32pm IST 31st July 2025

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