Current heat wave second longest for April 2022 in Delhi in over decade, says IMD
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The ongoing heat wave in Delhi NCR has become the second highest for the month of April, with five consecutive days, over the last 12 years with the highest being six days in April 2017 during the same period, the IMD said. The criterion for declaring a heat wave by IMD is when maximum temperature for any station reaches at least 40 degrees Celsius or more for plains and at least 30 degrees Celsius or more for hilly regions.