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 9, 2026.
515
miles
Megaflash over the US Great Plains
- 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 9, 2026
Sources
- World Meteorological Organization Read the source
- EarthSky Megaflash lightning record us texas kansas city
Spotted an error or a newer record? Use the form below with a source link.
Spotted something out of date?
More weather records
-
Weather 302 mph Highest tornado wind speed measured 1999 Bridge Creek-Moore tornado · Bridge Creek, Oklahoma, United States See record ↗ -
Weather 214.4 mph Highest sustained wind in a tropical cyclone Hurricane Patricia and Typhoon Nancy (tied) · Eastern Pacific Ocean, off Mexico See record ↗ -
Weather −89.9 °F Coldest permanently inhabited place Oymyakon · Sakha Republic, Russia See record ↗ -
Weather 94.3 °F Hottest inhabited place by average temperature Dallol, Ethiopia · Afar Region, Ethiopia See record ↗