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NEW DELHI: So far there have been no major heat waves in the central areas and “excess rain” across the country, this summer is proving unusual, forecasters say.
Summer begins in March in the central heat wave areas of northern, central and eastern India, and intensifies in April and May until the first week of June, when monsoon winds arrive. In addition to the northern and eastern plains, the central Vidarbha-Marathwada region, India, Gujarat, and parts of southern India in Andhra Pradesh and Telangana are known as central heat wave zones, where temperatures rise above 45 degrees centigrade.
In western Rajasthan, the maximum temperature even crosses the half-century mark.
the IM D Predicts higher than normal temperatures in heat wave zones this summer. However, the temperature has not yet reached its peak.
In contrast, India received a 25 percent excess rainfall between March 1 and May 11, according to the Indian Meteorological Department.
O P Sreejith, a senior scientist at IMD’s Long Range Forecasting unit in Pune, said March saw 47 percent more rain than normal and in April there was 8 percent more.
“This is not a regular phenomenon,” said IMD CEO Mrutunjay Mohapatra.
Mahesh Palawat, vice president of private forecaster Skymet Weather, said there are generally two cases of heat waves in April.
The IMD declares a heat wave when temperatures rise 5-6 degrees Celsius above normal. If it is above 7 degrees Celsius than normal, the IMD declares a severe heat wave.
Sathi Devi, Head of the National Time prediction IMD Center said there was a heat wave in Gujarat in April, but it was not widespread.
This month, temperatures in parts of Rajasthan rose above 40 but a western disturbance brought rain and lowered mercury again.
Devi attributed the lower temperatures in the northern plains to frequent western disturbances that caused showers and thunderstorms.
A western disturbance is a cyclonic storm originating in the Mediterranean and traversing central Asia. When it comes into contact with the Himalayas, it brings rain to the plains and hills. This is a crucial phenomenon in winters.
Devi said parts of eastern and southern India have also witnessed thunderstorm activities that have kept temperatures below normal.
May has seen two western riots. Another is expected later this week.
“But the temperature could rise after May 16,” Palamet of Skymet warned.
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