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Category: GLM

Supercell thunderstorms produce tornadoes, large hail and damaging winds across northern/central Illinois and northwestern Indiana

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible and Infrared Window images (above) included time-matched plots of SPC Storm Reports — which showed supercell thunderstorms that produced several tornadoes, hail as large as 2.50″ in diameter and wind gusts as high as 85 mph across parts of northern/central Illinois and far northwestern Indiana on 11 June 2026.... Read More

Severe thunderstorms in southern Saskatchewan and Manitoba

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) and Infrared Window images (below) showed the development of supercell thunderstorms in parts of southern Saskatchewan and southern Manitoba on 06 June 2026. GOES-19 GLM Flash Points highlighted the abundant lightning activity that was associated with these thunderstorms. The supercell thunderstorms... Read More