Birdwatch Note Rating
2025-01-17 15:49:44 UTC - HELPFUL
Rated by Participant: CA46FA8899390D27721F3DF3ED52A8A57598AF57D1D7E8BD2575666AA02B6BA3
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Original Note:
Fallstreak holes, or hole-punch clouds, form when supercooled droplets freeze from a pressure drop (passing aircraft) or onto nuclei, creating ice crystals. Crystals then grow larger until they precipitate and evaporate in dry air below causing a hole and virga streaks. https://earthsky.org/earth/hole-punch-clouds-aka-fallstreak-holes-made-by-jets/ https://earthobservatory.nasa.gov/images/152486/making-sense-of-holes-in-the-clouds https://www.nesdis.noaa.gov/fallstreak-clouds
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