Weather report. Coastal areas of Tamil Nadu are expecting heavy rain next week, expected to spread southwards

Fairly widespread  rain may initially return  to coastal  Tamil Nadu before spreading to adjacent parts of the southern peninsula as easterly winds begin to moderate again after a similar event hit Thoothukudi early last week, Tenkasi and Kanyakumari Districts.  

Need to be watched

  Weather maps show no cyclonic circulation in the area, one of which caused flash floods in southern Tamil Nadu, up to  95 cm in 24 hours in Kayalpattinam. However, this area should be closely monitored due to  the predicted upwelling in the eastern Gulf of Mannar/Strait of Pak. In this regard, it is pertinent to note that the India Meteorological Department (IMD) reported the development of a circulation further south of Sri Lanka, with  strong  easterlies affecting both Sri Lanka as well the South-East coast of Tamil Nadu to the North-West. It may strengthen but will move out from under the Sri Lanka/South India barrier into the open Indian Ocean  by the end of December.

 A single downpour

  As per IMD forecast extended from 28.12.2024 to 03.01.2024, light/moderate  to fairly widespread rain is likely over Peninsular South  India and  Andaman & Nicobar and Lakshadweep Islands. Isolated heavy rain is likely for one or two days over the Andaman & Nicobar Islands and Tamil Nadu during the week.

   Overall, the extreme southern peninsula of India will receive normal to above normal rainfall  during the week, while  the rest of the country, except the northeastern states, the Andaman and Nicobar Islands and the hills, will be mostly dry. West Bengal, Sikkim and Northwest India where rainfall is likely to be normal or below normal. Global model forecast  Some global models indicate heavy rain in coastal Tamil Nadu and adjacent region from December to January 10 and more than normal in some parts of peninsular India (Goa, South Maharashtra, Telangana and South Andhra Pradesh). Rain is also likely over Madhya. Pradesh and adjoining northern parts of Maharashtra. Heavy rains can also occur in other parts of the country, and towards the end of January,  the intensity of the rains will decrease, which will continue to be strongest on the coast of Tamil Nadu.

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