Birdwatch Note Rating
2024-11-15 21:00:29 UTC - HELPFUL
Rated by Participant: 20906C330C8390934465BD3F0B8024B3509E3E50C0F5F626C4E1FD1550F08C2D
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Original Note:
Fallstreak holes, or hole-punch clouds, form when supercooled droplets freeze from a pressure drop (passing aircraft) or nuclei, creating ice crystals. The crystals then grow larger until they precipitate out 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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