Tamil Nadu’s Heatwave Preparedness and Impact

Understanding Heatwave Conditions

• Heatwaves are prolonged periods of unusually hot weather, often accompanied by high humidity.

• The frequency of heatwaves has increased in recent years, consistent with anthropogenic climate change.

Heatwave Management in India

• Heatwave management has emerged as a problem requiring focused attention.

• In April and May 2024, many parts of Tamil Nadu recorded temperatures above 40°C.

Impact of Heatwaves on Health

• Longer and more intense heatwaves linked to increased mortality risk.

• Heat-related morbidity and mortality can be caused by exposure to extreme heat.

Vulnerability of Children, Senior Citizens, Pregnant Women, and People Forced to Work in the Open

• Children, senior citizens, pregnant women, those with pre-existing co morbidities, and people forced to work in the open are more vulnerable.

Wet Bulb Temperature

• Exceeding a wet bulb temperature of 35°C for extended periods would induce hyperthermia in humans.

Governments’ Response

• The long-term goal is addressing anthropogenic causes of climate change while tackling systemic shortfalls.