1-minute Mesoscale Domain Sector GOES-19 (GOES-Eas)t Visible images (above) showed Hurricane Genevieve as it was rapidly intensifying to become a Category 4 storm on 26 July 2026. Low-altitude mesovorticies were very apparent within the eye — and GLM Flash Points depicted intermittent lightning activity within the eyewall of the hurricane.The... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) and Infrared Window images (below) showed clusters of thunderstorms that produced hail as large as 2.50″ in diameter and wind gusts as high as 92 mph (SPC Storm Reports) across parts of South Dakota on 25 July 2026. Pulses of overshooting tops exhibited infrared brightness... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared Window images (above) showed a large and persistent cluster of deep convection that remained southwest of Tropical Storm Bertha’s center during the nighttime hours leading up to sunrise on 23 July 2026.Pulses of overshooting tops exhibited very cold infrared brightness temperatures of -90 C or... Read More
1-minute Mesoscale Domain Sector GOES-19 Infrared Window images (above) showed Tropical Storm Bertha as it moved slowly northwestward then westward across the far northern Gulf of Mexico on 21 July 2026. Pulses of overshooting tops exhibited infrared brightness temperatures in the -75 to -80 C range (brighter white pixels). 1-minute GLM Flash... Read More
