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Tropical Low Drenching Southern India, Sri Lanka

A tropical low pressure, located south of India, has been producing locally heavy rainfall across both southern India and Sri Lanka since Monday.

Rainfall amounts this week have already totaled 25-100 mm (1-4 inches) across southern India, including areas from Thiruvananthapuram to Cuddalore.

Similar rainfall amounts have occurred in northern and western Sri Lanka, from Colombo northward.

This tropical low pressure will move generally to the north or northeast this week leading to continued heavy rainfall as the center of the storm passes into southern India then continues off to the northeast through eastern India late in the week.

Additional rainfall of 75-150 mm (3-6 inches) is expected through Thursday across southern India and western Sri Lanka. This rainfall, combined with what has already fallen, will result in a high risk for flash flooding.

Rainfall of 25-75 mm (1-3 inches) will reach areas as far north as Panjim in the west and Visakhapatnam in the east by Friday and Saturday.

While some towns will experience flooding problems, the rainfall will be beneficial for many areas as an ongoing drought continues across far southern India, where the heaviest rainfall is expected.

With an oncoming El Nino expected, concerns have risen that a below-normal monsoon could occur across much of India, which would have large impacts on the agriculture of the country.

This pre-monsoon rainfall would have beneficial long-term effects across the entire region if below-normal rainfall occurs in the coming months.