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meri saheli magazine subscription  Published this article page no  44 What are heat waves? Context The Konkan region including Mumbai has been experiencing sweltering heat in the recent days with maximum temperatures touching the 40degree mark. So why is Konkan experiencing heatwave conditions? The ongoing heatwave in Konkan including Mumbai is because it is under the direct influence of the prevailing heatwave in the adjacent SaurashtraKutch regions of Gujarat.The hot and dry winds from northwest India are reaching parts of Konkan.In addition the slow movement of sea breeze along the Maharashtra coast and the overall clear sky conditions have together resulted in such hot conditions. What is a heatwave? The IMD says heatwave is considered when the maximum temperature of a station touches at least 40 degrees Celsius or more for plains 37 degrees Celsius or more for coastal regions and at least 30 degrees Celsius or more for hilly regions. What are the criteria? Heatwave is declared when the departure from normal temperature is by 4.5 to 6.4 degrees Celsius and a severe heatwave is when the departure from normal is more than 6.4 degrees Celsius.For plains based on actual maximum temperature IMD considers heatwaves when actual maximum temperature is more than 45 degrees Celsius and severe heat wave when it is more than 47 degrees Celsius.This apart if the locality records over 45 degrees and 47 degrees on any given day then the IMD declares heatwave and severe heatwave meri saheli magazine subscription buy.

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