When is a Heatwave Declared in India? Know the Criteria!
Plains: 40°C or above
Coastal Areas: 37°C or above
Hilly Regions: 30°C or above
Heatwave: 4.5°C to 6.4°C above normal temperature
Severe Heatwave: More than 6.4°C above normal temperature
Based on Actual Maximum
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