| Syllabus: GS-III, Subject: Environment, Ecology and Disaster Management, Topic: Disasters, Issue: Heatwaves |
Context: The IMD forecasts above-normal temperatures across most of India from April to June.
Heat waves:
- A period of unusually high temperatures, with specific thresholds defined by the IMD.
- IMD declares a heat wave if maximum temperatures reach at least 40°C in the plains or 30°C in hilly regions, with departures of 4.5-6.4°C from normal.
- A heat wave is also declared if actual maximum temperatures exceed 45°C, with severe heat waves above 47°C.
Factors responsible for heatwaves:
- Climate change contributes to more frequent and lethal heat waves globally.
- El Niño weather conditions are also influencing heat wave occurrences.
Concerns:
- Significant risks to public health, agriculture, livelihoods, and disease spread.
- Higher temperatures can cause heat stress, illness, and mortality
The way ahead:
- The Election Commission of India has issued an advisory to manage the impact of heat waves during voting,
