Stuttering NE monsoon enters last phase over Tamil Nadu
After a strong start, the northeast monsoon, the primary rainy season for the State that has just entered the last lap of the season, has flattered to deceive. Even after the torrential downpour brought about by Cyclone Gaja that battered the central districts, the overall rainfall till date remains 11 per cent below normal, show data from the Regional Meteorological Centre, Chennai.
By : migrator
Update: 2018-12-01 20:40 GMT
Chennai
pread from October to December, the northeast monsoon marks the main period of rainfall for Tamil Nadu and neighbouring Puducherry. For the State, this season accounts for about 48 per cent of the annual rainfall – for coastal districts, this is as high as 60 per cent.
This year, however, the monsoon has so far been abysmal, especially for Chennai, Kancheepuram and Tiruvallur districts that form the Greater Chennai city. Since October 1 to December 1, Chennai district has recorded a 50 per cent deficiency, which is 27 per cent for Kancheepuram and 39 for Tiruvallur.
Though there are worse affected districts when calculated in percentage – Dharmapuri and Krishnagiri (54%) – and almost equally affected ones – Salem and Karur (45%) – the impact is particularly pronounced on the capital city that receives most of its rainfall during this period. But this year, it has only received 321.1 mm (October 1-December 1) as against the normal of 641.2 mm.
Nineteen out of the thirty-two districts in Tamil Nadu have recorded deficient rainfall, but the overall deficit is about 11 per cent, a relatively modest variation. However, a look at the daily mean rainfall reveal another interesting fact: Only a handful of days recorded normal rainfall, while the rest of the days received either three times of normal or nothing at all.
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