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New megaflash lightning record exceeds distance of pilgrimage route

The new record for longest lightning flash is 829 kilometers (515 miles), which would take at least 90 minutes in a plane.

Lightning strikes featured in WMO's 2025 calendar competition.
Lightning strikes featured in WMO's 2025 calendar competition. (AN/WMO/Edward Mitchell)

GENEVA (AN) — A notorious storm hotspot in the United States set a new world record for an exceptionally long lightning discharge known as a megaflash, the U.N. weather agency announced.

The longest lightning flash on record occurred in Oct. 2017, spreading for an "incredible" 829 kilometers (515 miles) from eastern Texas to near Kansas City, according to the World Meteorological Organization.

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