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Eastern India, Bangladesh to face flooding rain from budding cyclone

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A brewing tropical cyclone in the Bay of Bengal could spread flooding rain across eastern India and Bangladesh into this weekend.

This system comes just one week after Cyclone Kyant roamed the Bay of Bengal.

Currently a depression, the system will curve toward eastern India and parallel the coast of Andhra Pradesh and Odisha on Friday and Saturday, local time.

The depression may then make landfall in Bangladesh later this weekend. It is possible that the depression meanders south of Bangladesh into early next week, not making landfall until the middle of next week as a much weaker system.

AccuWeather Meteorologist Courtney Spamer said that conditions into early this weekend are conducive for the depression to become a cyclone.

"The best chance for it to strengthen into a cyclone will be Friday night into Saturday morning," she said.

However, the depression is likely not become stronger than Cyclone Kyant.

"Increasingly hostile winds above the surface should cause the storm to weaken before nearing Bangladesh," AccuWeather Senior Meteorologist Jason Nicholls said.

"The main threat from this system will be heavy rain and flooding from coastal Odisha to Bangladesh, including the cities of Kolkata and Dhaka," he said.

Rainfall in that area could total 100-200 mm (4-8 inches), threatening to cause widespread flooding problems. Rainfall on the higher end of that range will depend on how close the depression tracks to the coast, Nicholls said.

Similar rainfall totals may also threaten the higher terrain in Mizoram, Manipur and southeastern Meghalaya in northeastern India this weekend.

Along the northern coast of Andhra Pradesh on Friday and in Nagaland later this weekend, downpours will generally total 50-100 mm (2-4 inches) with localized flooding issues.

The track of the depression will keep its heavy rain away from Chennai.

As the depression strengthens, gusty winds will increase around its center and cause seas in the northern Bay of Bengal to become dangerously rough for small craft and swimmers.

If the solution of the depression delaying its landfall until the middle of next week unfolds, it would likely be a much weaker system by the time it reaches land.

However, localized downpours could still accompany it into Bangladesh. New flash flooding may ensue, especially with the ground saturated from this weekend's deluge.