Wednesday, October 28, 2015

Pull out your umbrellas, rainfall likely to intensify...TOI

CHENNAI: It's time to take those raincoats and umbrellas out of the closet, for the weatherman has predicted that rain, which started as a drizzle in the city on Tuesday, will intensify.

India Meteorological Department has forecast favourable conditions for the beginning of northeast monsoon over Tamil Nadu and the southern peninsular from Wednesday.

While it was generally cloudy across Chennai on Tuesday, some parts received patchy rain. The temperature (maximum at 33C and minimum at 25C on Tuesday), is expected to drop further over the next three days, the Met office said.

Regional Meteorological Centre (RMC), Chennai, has predicted "mainly or generally cloudy sky with the possibility of rain or thunderstorm for the next three days" in the city. Following that, an increase in the intensity of rainfall has been forecast till November 2. "Isolated heavy rains are expected generally across coastal Tamil Nadu from Wednesday," an RMC official said.

Chief meteorologist of Skymet weather forecasting agency Mahesh Palawat said a low pressure area that has developed over Sri Lanka and south Tamil Nadu makes for favourable conditions for the onset of the northeast monsoon.

"From Wednesday, many places will start getting rainfall," he said.

"For the commencement of the northeast monsoon, winds should be from the northeasterly direction over the Bay of Bengal and weather systems like low pressure areas or depression should form to increase rainfall. The conditions now are favourable," he added.

There has been a delay of more than a week for the onset of the northeast monsoon on which Chennai has pinned its hopes t avert a water crisis. The city faces a deficit of 46% in rainfall in October. Its reservoirs are at a deficit level of 90% and water levels are decreasing rapidly. Tamil Nadu recorded deficit rainfall for three successive years till 2014.

The weatherman says rain could be surplus this time in many parts of the state.

Meterologists said rain or thundershower, which would occur at most places over coastal Tamil Nadu in the next three days would increase in the days subsequent to that.

Chennai, Thanjavur and Nagapattinam are likely to get sufficient rain. Interior parts of the state will receive moderate to heavy rainfall, but the intensity would be lower than in coastal regions.

"During monsoon, there would be rainfall for three or four days followed by a lull during which there will be light or patchy rain. Again there would be heavy rain," a meteorologist said.

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