Thunderstorms conjure ghostly coronae in treetops, observed outdoors for the first time

PHYSorg
Feb 24, 2026, 12:00 pm64 ptsTrending
For the first time, researchers have observed and measured weak electrical discharges, known as coronae, on trees during thunderstorms. A new study describes the near-invisible sparkles appearing similarly on branches of several tree species up and down the U.S. East Coast during the summer of 2024, implying…

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