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Category: Severe convection

Satellite-derived instability ahead of widespread severe winds over South Dakota and Minnesota

Storm Reports from SPC for 12 May 2022, (also shown below), show an extraordinary number of severe wind reports over eastern South Dakota and western Minnesota. Visible imagery from the CSPP Geosphere site, above, shows the convective system responsible for the widespread winds lifting northeastward out of Nebraska and moving over the Missouri River Valley.The animation below shows... Read More

GOES-16 GLM Lightning detection over Minnesota

Wednesday, 05-11-2022, brought storm damage and copious amounts of lightning over Minnesota and parts of South Dakota, Iowa, and Wisconsin. The GOES-16 Geostationary Lightning Mapper (GLM) detected the flash extent density over these areas. A NEXRAD radar composite shows a large bow echo signature around 05-12-2022 01:25Z that spanned the... Read More

Severe thunderstorms across the Upper Midwest

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) include time-matched SPC Storm Reports — and showed some of the widespread severe weather that occurred across the Upper Midwest during the afternoon and early evening hours on 11 May 2022. Numerous pulsing overshooting tops were apparent in the vicinity of most storm reportsThe corresponding 1-minute GOES-16 “Clean”... Read More