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Category: LightningCast

Significant flash flooding in the Milwaukee metro area, and 2 hikers injured by a lightning strike near Palmyra, Wisconsin

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared images (above) showed thunderstorms that produced very heavy rainfall (text list | radar-estimated rainfall), with 4 sites reporting over 11 inches across parts of the metro Milwaukee area, during the 12-hour period from early in the evening on 09 August into the early morning hours on 10 August 2025 —... Read More

Hail in the Samoan Archipelago

In the evening of 28 July 2025, residents of the Samoan island of Upolu experienced an intense thunderstorm which produced hail, a very rare event for maritime tropical Pacific environments. Social media videos show 1 – 2 cm hailstones falling around residents excited to see such novel conditions. The forecasters... Read More