India, Jan. 20 -- Each district witnessed a minimum excess precipitation of 400%, said IMD

The southern India received unusually heavy rainfall from January 1 to January 17. This winter rain may have been caused by sudden stratospheric warming (SSW) far away in the Arctic region, some scientists said.

Tamil Nadu received almost 10 times the rainfall that it receives in this period. All its 38 districts experienced large excess of rainfall - 60 per cent more than the normal for this time of the year. As a result, 25 lakh acres of crops across the state was submerged, said PR Pandian, president of The Coordination Committee of All Farmers Associations of Tamil Nadu.

Sixteen of the districts received 10 times (or more) the normal rainfall...