A persistent low-pressure system over the Bay of Bengal continues to lash West Bengal, with heavy rain and thunderstorms predicted for nine districts including Kolkata.

  • Heavy rainfall predicted for 9 districts including Bankura, Purulia, and Darjeeling.
  • Yellow alert issued for South Bengal with wind speeds reaching 30-40 kmph.
  • North Bengal expected to face heavy showers until Friday.

The weather patterns across West Bengal remain volatile as a low-pressure area continues to hover over the region. According to the latest bulletin from the Alipore Meteorological Department, the system is currently positioned over Gangetic West Bengal, the adjacent North Odisha coast, and the Northwest Bay of Bengal. This system, coupled with an active cyclonic circulation and the monsoon trough, is triggering widespread instability across the state.

For South Bengal, the impact will be felt acutely over the next 48 hours. A yellow alert has been issued for the entire region. Specifically, the districts of Bankura, Purulia, Paschim Bardhaman, and Birbhum are expected to witness heavy rainfall ranging between 7 to 11 cm. Meanwhile, Kolkata and other surrounding districts are bracing for thunderstorms accompanied by gusty winds blowing at speeds of 30 to 40 kmph.

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Why This Matters

BozokMedia analysis shows that the persistence of this low-pressure system during the monsoon peak can lead to severe urban flooding in Kolkata and agricultural disruptions in the western districts. The synchronization of the monsoon trough with a cyclonic circulation often intensifies precipitation, increasing the risk of landslides in the hilly terrains of North Bengal.

The interaction between the monsoon trough and the low-pressure area over the Bay of Bengal is creating a concentrated moisture corridor, ensuring prolonged rainfall.

In North Bengal, the situation is equally concerning. Heavy rain is forecasted for Darjeeling, Kalimpong, Jalpaiguri, Alipurduar, and Cooch Behar. The Meteorological Department has extended the heavy rain warning for these five northernmost districts until Friday. While the rainfall may not be uniform across all areas, the yellow alert remains in place due to the potential for flash floods and wind gusts of 30-40 kmph.

Looking ahead, the weather is expected to transition into a phase of light to moderate rain across all South Bengal districts from Wednesday through next Monday. While fishermen were previously advised to stay ashore on Monday, no such restrictions are currently in place for Tuesday, though caution is always advised during unstable weather.

Did You Know?: The Alipore Meteorological Department is one of the oldest weather observation centers in India, providing critical data for the Eastern region for over a century.

Frequently Asked Questions

Q1: Which districts in South Bengal will see the heaviest rain?
Bankura, Purulia, Paschim Bardhaman, and Birbhum are expected to receive the heaviest rainfall (7-11 cm).

Q2: Until when is the heavy rain warning active for North Bengal?
The yellow alert for heavy rain in North Bengal districts like Darjeeling and Kalimpong is active until Friday.