Cyclone Yaas, which is bearing down on Bengal and Odisha from the Bay of Bengal, will make landfall near Balasore coast in Odisha 240km from Kolkata on May 26 with an expected wind speed of 155kmph-165kmph.
Heavy rainfall could cause flash flooding in northeastern India, with a widespread 150 to 250 mm (6 to 10 inches) of rain and isolated totals over 250 mm likely. Some of the outer rain bands on the eastern side of the storm may lead to some flooding across portions of Bangladesh.
Tropical cyclones can form year round in the North Indian Ocean, but are especially common in the spring ahead of monsoon season.