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Category: GLM

Severe thunderstorms produce tornadoes and damaging winds in Texas and Louisiana

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) include time-matched (+/- 3 minutes) plots of SPC Storm Reports, and showed thunderstorms that produced tornadoes and damaging winds across southeast Texas and southwest Louisiana on 24 January 2023. One tornado caused EF3 damage in the Houston, Texas area. This severe convection... Read More

Thundersnow in the Upper Midwest, and 30-second imagery of severe thunderstorms across the Deep South

GOES-16 (GOES-East) Mid-level Water Vapor (6.9 µm) images with an overlay of GLM Flash Extent Density (above) covered part of a widespread winter storm event — which included thundersnow in parts of Nebraska, Iowa, South Dakota and Minnesota — that occurred on 03 January 2023. Areas that reported thundersnow experienced convectively-enhanced snowfall rates... Read More

Lake effect snow downwind of Lake Erie

1-minute Mesoscale Domain Sector GOES-16 “Clean” Infrared Window (10.3 µm) images (above) include an overlay of GLM Flash Extent Density — which showed rapidly-cooling cloud-top infrared brightness temperatures (and intermittent lightning) over the eastern half of  Lake Erie, associated with the initial impulse of lake effect snow (LES) immediately downwind of the lake... Read More