Lightning in India: A bolt from the blue that kills thousands

Last March, four gardeners working in a condominium in Gurgaon, a suburb near the Indian capital, Delhi, took shelter under a tree during a downpour.

Within minutes, an orange flash raced down the trunk followed by pealing thunder. Lightning usually lasts under a second. A typical lightning flash measures about 300 million volts and 30,000 amps – enough to kill. It can cause the air around it to heat up to temperatures that are five times than that on the surface of the sun.

The four men fell to the ground. One of them died, while the others survived with burns.

“I don’t remember what happened to me and how it happened. In a matter of seconds, everything was destroyed,” one of the survivors told a newspaper.

His colleague was one of the more than 2,500 Indians who lose their lives to lightning every year. Lightning strikes have killed more than 100,000 people in the country between 1967 and 2019, according to official data. This is more than a third of fatalities caused by natural hazards during this period. Survivors might have to live with symptoms such as weakness, dizziness, and memory loss.

India’s meteorological office began lightning forecasts three years ago. Mobile apps now track flashes. People are alerted over radio, TV, and megaphone-toting volunteers. A three-year-old initiative called Lightning India Resilient Campaign is working hard to raise awareness in lightning-prone villages and reduce deaths.

But the number of strikes has also risen sharply. India recorded more than 18 million lightning strikes between April 2020 and March 2021, according to a study by the non-profit Climate Resilient Observing Systems Promotion Council. This was a 34% rise over a similar period during the previous year. Satellite data gathered by the Indian Institute of Tropical Meteorology also shows strikes had “increased rapidly” between 1995 and 2014.

Although half-a-dozen states recorded a bulk of the strikes, three states – Odisha, Jharkhand and West Bengal – accounted for 70% of the deaths. Men working in farms are most vulnerable.

“There are a lot of lightning strikes in our area. I still remember a seven-year-old boy getting killed when he went out during a storm to fetch their buffalo. Now we just try to stay at home,” says Sandhyarani Giri, a school teacher in West Bengal.