Last year Very Severe Cyclone Thane gave over 100 mm rains for Chennai on December 30. This year, most Numerical models predict heavy rains for Tamil Nadu coast including Chennai from 28th extending into New Year eve on December 31st. As on 23.12.2012, Tamil Nadu has got 358 mm rainfall against normal rainfall of 429 mm with a deficient of – 16%. The expected spell during last days of the year is the only hope bringing NEM rainfall into normal category.
Since 2005, NEM has never let the Chennai City down with its rains. Its been an extraordinary wet run from 2005 and Chennai people have forgotten the dry days of 2000 to 2004. After the failure of SWM in Tamil Nadu in 2012, all the reservoir and dams across the state and in Chennai city are having less than 50% water, we badly need this last spell at the end of the year, which itself is an rarest of rare activity.
Moreover, this year North East Monsoon is expected to spill over into January 2013 and models have been showing rainfall in Tamil Nadu upto Pongal. Very interesting days ahead for rain lovers and it will be interesting to see when IMD will announce the NEM withdrawal from Tamil Nadu.