Question

Define concept of kalbaishaki

Answer 1

During the hot weather period i.e from March to May the eastern and North-eastern states of the subcontinent like West Bengal, Bihar, Assam, Orissa (parts) and Bangladesh experience dramatic appearance of a special type of violent thunderstorm know as Nor’wester.The dramatic appearance of nor’wester in the afternoon or evening of pre-monsoon months over Bengal, Bihar, Assam and adjoining areas has been a matter of great interest not only to the meteorologists but to all sections of people and has a place in literature. Nor’wester not only gives relief after mid-day heat but helps crops.

It is known as ‘Kaal Baisakhi’ or calamity of the month of Baisakh (April,15-May,15). Apart from its destructive effects like sudden rise in wind speed, lightning, thunder and hail the rainfall associated with the storm although small in amount, is extremely helpful for the pre-Kharif crops like jute, Aus paddy, summer till and a large number of vegetables and fruits and the sudden drop in temperature gives relief after unbearable mid-day heat.

It struck Bihar yesterday and thirty-two people were killed and over 80 seriously injured as the nor’wester ravaged several districts last night, destroying thousands of huts and standing crops.

Maximum number of 25 deaths were reported from Purnia district, while six have died in Madhepura and one in Madhubani.

Indian Express today covers it so well


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Answer 2

During Summer season sun apparently moves northward direction. Due to this movement temperature rises at a particular place which is called local heating which causes conventional rising of air thereby causing thunderstorm. This is called Pre-Monsoon Showers. This occurs before monsoon season i.e. summer.

It is also called Kalbaisakhi in West Bengal, Mango Showers in Karnataka and Blossom Shower in Kerala. Generally it is called April Rains.

They help in the early ripening of mangoes,and often referred to as 'mango showers'.

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