T. Ramakrishnan

“Near normal” rainfall predicted; districts record scanty rainfall

Nil rainfall in Perambalur, Tiruvarur

Storage comfortable in many reservoirs

CHENNAI: The onset of the much-awaited northeast monsoon is likely to take place in a day or two.

Indicating this, S.R. Ramanan, Area Cyclone Warning Centre Director, says rainfall occurred at many places over the coastal Tamil Nadu in the 24-hour-period that ended at 8-30 a.m. on Sunday. A few interior parts of the State also received rain.

On Friday and Saturday, the situation was the same in the State. As on Sunday morning, Uthangarai (Krishnagiri district) and Orathanadu (Thanjavur district) registered 9 cm each.

The monsoon, accounting for nearly 50 per cent of the State’s annual rainfall, normally sets in around October 20 with an allowance of seven days. This feature was generally noticed in the last 10 years.

In 1998 and 2000, it set in on October 28 and November 2 respectively.

In 1998, the State witnessed excess rainfall with 30 per cent departure from the normal rainfall.

Two years later, it was deficient with 28 per cent deviation.

In the last 10 years, the State experienced excess rainfall on three occasions, normal rainfall in five years and deficient rainfall in two years.

As regards 2007, a study of the Regional Meteorological Centre revealed that the monsoon might not be bountiful. A “near normal” rainfall is expected.

A perusal of the department’s rainfall report for October (till October 17) pointed to a dismal scenario. Except Theni, districts recorded either scanty or deficient rainfall.

In fact, Perambalur and Tiruvarur districts recorded “nil rain” in the first half of this month. Theni registered nearly 10 cm.

However, what is comforting to water managers is that the State received its share of rainfall during the southwest monsoon and many of its reservoirs touched comfortable water levels.

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