Thunderstorms in the 1940s killed hundreds of people in the US every year but better warning systems and raised awareness have helped limit the toll
Recent figures suggest that the US is heading for a record low figure for lightning casualties, with only 13 deaths so far this year. While severe thunderstorms may be increasing the number of deaths attributed to lightning in developed countries keeps falling. In the 1940s, lightning killed several hundred people each year in the US.
Some warning systems work by detecting the radio emissions from nearby lightning strikes. These are good for gathering meteorological data, but may be too late for those on the ground.
An alternative approach detects the build-up of static charge on the ground which precedes lightning. People often describe their hair standing on end minutes before lightning strikes; instruments can provide more timely warning.
The makers of one such system, Thor Guard, claim that a single electrostatic sensor can cover an area 10 miles across. Mounted at a high point where charge accumulates the sensor continuously measures the changing electrostatic field and identifies the pattern of charge associated with lightning, sounding air horns to alert people to take cover.
We cannot prevent lightning. But more awareness, and better warnings, should mean deaths and injuries will continue to decline.
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https://www.theguardian.com/news/2017/sep/12/deaths-from-lightning-strikes-plummet
