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
Tropical Depression Two developed in the northeastern Gulf of Mexico at 1500 UTC on 19 July 2026 — and 1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) showed the slow trend of organization during the day (there was a 49-minute gap in image coverage as Mesoscale Sectors were rearranged). GLM Flash... Read More
5-minute CONUS Sector GOES-18 (GOES-West) Visible and Infrared Window images (above) showed the rapid development of a relatively compact thunderstorm east-southeast of Salt Lake City on 18 July 2026. The coldest thunderstorm cloud-top infrared brightness temperature was -48.76 C at 1741 UTC (above) — which represented an altitude just below the Most... Read More
