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
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Infrared Window images (above) included plots of Flood Watch/Warning/Advisory polygons (Flash Flood Warnings appeared as red polygons, while Flash Flood Emergencies appeared as bold red polygons) across the Hill Country of Texas on 16 July 2026. After the previous few days of heavy rainfall — which... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images with an overlay of the Fire Mask derived product (above) showed the smoke plumes and thermal signatures associated with numerous wildfires across far northeastern Minnesota and southern Ontario on 13 July 2026. An elevated fire risk was in place, due to very warm surface... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Infrared Window images combined with the FDCA Fire Mask derived product (above) showed that the Cottonwood Fire in southwestern Utah produced a sequence of pyrocumulonimbus (pyroCb) clouds beginning late in the day on 23 June 2026. These pyroCbs eventually drifted eastward across the Utah/Colorado border.Each... Read More
