
Heatwaves and Lightning Added to Notified Natural Calamities List
#GS-1 #GS-3 #Geography #Physical Geography #Disaster Management #Climate Change #Current Events #National #Important Geophysical Phenomena
Why in News
- The Central Government added heatwaves and lightning to the official list of notified natural calamities under SDRF and NDRF operational rules for 2026-31.
- This decision follows recommendations from the 16th Finance Commission, which pointed out how climate change is making severe weather events more frequent and damaging.
- State governments can now directly use SDRF money to provide immediate financial relief to individuals affected by extreme heat or lightning strikes.
- If state funds run low, assistance from the NDRF will support state efforts, while heatwave protection projects can receive grant support from Disaster Mitigation Funds.
- This addition expands the total number of notified natural disaster types from 12 to 14, joining existing hazards like floods, cyclones, droughts, earthquakes, and landslides.
- This policy adjustment strengthens India's disaster risk financing framework by updating emergency relief rules to handle climate risks better.
Heat Waves
- A heatwave is a prolonged period of unusually hot weather that stays well above typical regional temperatures, mainly affecting India from March to June with peak intensity in May.
- The India Meteorological Department (IMD) officially classifies and announces heatwaves based on specific temperature safety levels set for different geographical zones.
Lightning
- Lightning is a rapid atmospheric electric discharge that occurs when opposite electrical charges separate and accumulate in large quantities.
- These powerful electric sparks can form inside a single cloud, between two different clouds, into surrounding air, or hit the ground directly.
- Although most common during intense thunderstorms, lightning can also occur within volcanic ash plumes, large wildfires, and heavy snowstorms.
- Because electric currents take the easiest path to the ground, lightning usually strikes the tallest nearby structures with the highest electric potential.
- To protect properties from structural damage, builders install a copper lightning rod on roofs to catch electric strikes safely.
- The pointed end of the rod creates a strong electric field that guides the electrical surge harmlessly into the soil through a grounding wire.