Heavy rainfall for Sri Lanka and India

Official blog of the Met Office news team

This depression has produced very heavy rainfall across much of Sri Lanka and into the far south of India over the weekend. The capital of Sri Lanka, Colombo, reported 305mm of rain on Sunday (May average rainfall is 371mm), leading to some flooding impacts.

The tropical depression is expected to move northwards this week, probably close to the eastern India coastline, bringing unusually early heavy rainfall up the eastern coast of India. As the system tracks north, up to 400mm of rain is possible in a 24-hour period. For reference, Chennai has an average May rainfall of only around 25mm, but residents could see over 10 times this in a 24-hour period for a time this week.

91b_strike_probabilities Chart showing the forecast track of the tropical depression, taking it northwards, close to the eastern India coastline

In the wake of this tropical system, a very moist west-to-southwest flow will persist across…

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