Broken Records

Longest lightning flash

The current longest lightning flash record is 515 miles, held by Megaflash over the US Great Plains, set on October 22, 2017. Last checked October 10, 2026.

515

miles

Megaflash over the US Great Plains

Eastern Texas to near Kansas City, United States, 2017

Holder
Megaflash over the US Great Plains
Record
515 miles
Metric
829 km
Exact figure
829 km (515 mi)
Location
Eastern Texas to near Kansas City, United States
Date set
October 22, 2017
Recognized by
World Meteorological Organization
Last checked
October 10, 2026

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