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Tropical downpours to threaten Diwali festivities across eastern India

By Kristina Pydynowski, AccuWeather senior meteorologist
By Eric Leister, AccuWeather senior meteorologist
October 20, 2017, 11:28:31 AM EDT

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A depression moving northward from the Bay of Bengal this week will pose impacts to eastern India, Bangladesh and western Myanmar.

The dry start to the week will be replaced by the threat for downpours and flooding lasting into the weekend.

The rain returned just in time to dampen Diwali festivities across parts of eastern India on Thursday.

India Depression 10.19 PM

The depression approaching the southeastern coast of India and is running out of time to become a cyclonic storm, AccuWeather Senior Meteorologist Jason Nicholls said.

A cyclonic storm is the equivalent of a tropical storm in the northern Pacific or Atlantic oceans.

“The main threat for impacts appears to be from northeastern Andhra Pradesh to West Bengal in India, as well as in Bangladesh,” Nicholls said. Flooding downpours may also spread across western Myanmar as the depression pulls moisture from the Bay of Bengal northward.

“There could be some concern for wind damage in India near where landfall occurs,” Nicholls said. “But at this point, I am most concerned for heavy rain and flooding.”

India weather center
AccuWeather tropical cyclone center
Reed Timmer battles extreme winds and waist-deep floodwaters

Rough seas will also build across the Bay of Bengal, creating hazards for swimmers and those with shipping interests.

These rough seas may be pushed onshore as the depression moves inland, leading to coastal flooding.

Residents of Chittagong in Bangladesh, along with Visakhapatnam, Puri and Kolkata in India, should review flood preparedness plans in advance of this cyclone. This is especially true for those living in low-lying, urban and poor drainage areas.

More widespread and severe flooding may unfold if the future cyclone lingers along the coast into this weekend—a scenario that cannot be ruled out.

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