Tamil Nadu Heatwave Alert: IMD Forecasts Scorching Summer Ahead

Top Summary

• What happened: The IMD forecasts above-normal maximum temperatures and heatwave spells for Tamil Nadu from March to May.
• Why it matters: Heatwaves pose risks to public health, water resources, power demand, and essential services, especially for vulnerable populations.
• What changes for people: Residents are advised to stay hydrated, avoid peak heat hours, and protect vulnerable individuals.
• Who is affected: Coastal Tamil Nadu, including Chennai, and adjoining northern districts are most likely to experience heatwave conditions.

Heatwave Warning Issued

The India Meteorological Department (IMD) has issued a heatwave forecast for Tamil Nadu between March and May.

Above-normal maximum temperatures are expected across most parts of the state.

Heatwave Conditions Expected

Coastal Tamil Nadu, including Chennai, may experience 3 to 9 heatwave days.

Some adjoining northern districts could see 9 to 15 heatwave days.

Minimum temperatures are expected to remain largely near normal.

Heatwave Defined

According to the IMD, a heatwave is declared when:

• The maximum temperature reaches at least 40°C in plains (30°C in hilly regions).
• The temperature is 4.5°C to 6.4°C above normal.
• The actual maximum temperature is 45°C or higher, regardless of the deviation from normal.

Chennai's Outlook

May is typically the hottest month in Chennai, with average maximum temperatures reaching 37.3°C.

The outlook for March is relatively moderate, with temperatures near normal in Chennai and districts up to the delta region.

Some interior districts may experience below-normal daytime temperatures. Night temperatures are expected to remain near normal, except in some central districts.

IMD Caution

"The increased likelihood of heatwave conditions may pose significant risks to public health, water resources, power demand, and essential services, particularly affecting vulnerable populations."

The IMD advises:

• Stay hydrated.
• Avoid peak heat hours.
• Take special care of vulnerable individuals.

What to Watch Next

The IMD will continue to monitor temperature trends and provide updates on heatwave conditions. Public health officials will likely issue further advisories as the summer progresses.