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For every person who is killed by lightning, roughly another nine are struck and survive, often with life-changing injuries. And with climate change making stormy weather and lightning more common, activists like Daya believe the Indian government is failing to protect its people. “A bare minimum would be to at least spread information about all things lightning at local government level,” says Daya.
India has systems in place to predict dangerous storms. These work by gathering a lot of precise data, says Sanjay Srivastava, chair of the Climate Resilient Observing-Systems Promotion Council (CROPC), an intergovernmental institute that works to develop resilience against climate change impacts. Srivastava is also the convener of the Lightning Resilient India Campaign.
“Detecting the precise location of a lightning cloud-to-ground strike is a calculation mechanism where a minimum of three devices are required,” says Srivastava. These are radio frequency detectors, to detect the radio waves produced by lightning; a doppler weather radar, to detect precipitation and wind patterns associated with storms that may produce lightning; and a lightning detector, a device specifically designed to detect the electromagnetic signals produced by lightning strikes.
As of April 2022, India’s National Remote Sensing Center had 46 lightning-detection sensors installed across the country. Another institute, Indian Institute of Tropical Meteorology, Pune, has 83 in place. These, along with other private and institutional data, monitor and guide India’s lightning strike warning system.
The data shows that Jharkhand and other neighboring regions in East and Central India are among the country’s hot spots, as they are where hot and dry air currents from the northwest meet moist easterly currents. When clouds encounter warmer air, moist air rises until it reaches the subzero temperatures of the upper atmosphere, where it can freeze into ice particles called graupel. As these then collide with other ice particles, they generate electrostatic charges, which can eventually lead to lightning. Rising global temperatures are increasing this phenomenon.
However, despite advancements in meteorology, the full mechanisms behind lightning’s formation and behavior remain partially shrouded in mystery. The precise triggers, the exact nature of how lightning propagates through the atmosphere, and the factors that determine the intensity of each strike are still not fully understood. The risk to human life can be predicted in only fairly broad terms.
And while these early warning systems exist, their information often does not reach people in time. This is why volunteers like Shankar work to inform people on how to stay safe and teach how to build easy-to-make lightning arrestors—devices that neutralize cloud-to-ground lightning.
The day Shankar visited the Manjhis’ house, it was drizzling. On the way he spotted farmers and locals sheltering under trees. He stopped to inform them that standing under a tree during rainfall increases the chances of getting hit by lightning. But they said there was no other place where they could take shelter.
Lightning strike casualties are more prevalent in rural areas where infrastructure is limited. Concrete houses, which can have protective Faraday cage effects, are less prominent there than in cities, while tall vegetation, which workers might shelter under, can attract strikes. Densely populated areas in stormy regions also see more casualties. “We can say there are two factors behind lightning casualties. There are lots of environmental factors, and then there are socioeconomic factors,” says Anand Shankar, who works at the India Meteorological Department at the Ministry of Earth Sciences in the state of Bihar (Anand and Daya are not related).
