Shocking! Within this cluster of storms, a single lightning bolt captured by NOAASatellites in April 2020 was recently certified by the WMO as the world’s longest flash on record with a distance of 477 miles. MORE: Megaflash Lightning Weather
which maintains official records of global, hemispheric and regional extremes recognized:
The new record for the longest detected megaflash distance is 60 kilometres more than the previous record, with a distance of 709 ± 8 km across parts of southern Brazil on 31 October 2018. Both the previous and new record used the same maximum great circle distance methodology to measure flash extent.
The new record strikes occurred in hotspots for Mesoscale Convective System thunderstorms, whose dynamics permit extraordinary megaflashes to occur – namely, the Great Plains in North America, and the La Plata basin in South America.
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