During the hot weather period starting from March to May the eastern and North-eastern states of India like West Bengal, Bihar, Assam, Odisha experience a severe type of thunderstorm which is known as Nor’wester. In Bengal, it is known as ‘Kal Baisakhi’ or calamity of the month of Baisakh (April,15-May,15). It is very helpful for the pre-Kharif crops like jute, paddy, summer till and a large number of vegetables and fruits and the sudden drop in temperature gives relief to the people.
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