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‘Megaflash’ Lightning Bolt Travelled over 800 Kilometres, Setting a New Record, Study Says

UNITED STATES GREAT PLAINS, JUL 31 – The World Meteorological Organization certified a lightning flash spanning 829 km, surpassing the previous record by 61 km and raising public safety concerns about megaflashes.

  • In October 2017, the World Meteorological Organization verified a lightning flash that traveled an unprecedented distance of 829 kilometers across the central United States, setting a new world record.
  • This record beat the previous 2020 lightning flash by 61 kilometers, and improved satellite lightning mappers operating for about ten years made this discovery possible.
  • Researchers found megaflashes occur rarely in less than one percent of thunderstorms and often form in weaker storm areas after the main storm has passed.
  • WMO Secretary-General Celeste Saulo emphasized that while lightning can be awe-inspiring, it poses significant dangers and is responsible for numerous fatalities globally each year, underscoring concerns for public safety.
  • The finding implies megaflashes represent serious hazards causing damage and wildfires far from storms, urging improved safety guidance and ongoing monitoring with expanding lightning data.
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14 Articles

Lean Right

A 829-kilometre flulger was seen in the United States. The record was confirmed by the World Meteorological Organization. The amazing phenomenon article in the U.S.: The longest flulger ever recorded appeared first in Romania TV.

Lean Left

At first, researchers have overlooked the event in the measurement data. Then the world weather organization has looked more closely: a flash from 2017 is now officially the longest in the world.

·Germany
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Lean Right

In the USA, however, lightning can be as long as the whole of Germany. Experts have now announced a world record – and also said how long the mega flash lasted.

·Dortmund, Germany
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The Megablitz had about the length of the route from the north to the south of Germany. The record weather event in the USA was observed.

·Frankfurt, Germany
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scimex.org broke the news in on Thursday, July 31, 2025.
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