IMD warns of cold wave in 7 south Bengal districts over weekend
In Kolkata, the minimum temperature dropped to 14 degrees Celsius on Friday morning, which is two degrees below the normal
Kolkata: A cold wave is likely to grip seven districts — Purulia, East Burdwan, West Burdwan, Bankura, Jhargram, West Midnapore and Birbhum — in southern part of West Bengal over the weekend, the India Meteorological Department (IMD) warned on Friday.
In Kolkata, the minimum temperature dropped to 14 degrees Celsius on Friday morning, which is two degrees below the normal.
“Dry north-westerly and northerly winds are blowing at lower levels. The night temperature in these seven districts is expected to drop below normal, and cold wave conditions may prevail over the weekend,” said an IMD official.
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The official also noted that the minimum temperature in other districts is likely to drop by at least 2–4 degrees below normal.
It is considered a cold wave when the minimum temperature is less than the 10th percentile of daily value (10% of days that are coldest or below a certain temperature threshold) and at the same time the daily minimum temperature is below 15 degrees Celsius. If such conditions are met for three consecutive days, then a cold wave event is declared.
“If the temperature drops more than 6.4 degrees below normal, it is considered a severe cold wave,” the official added.
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