Tropical Storm Melissa developed in the Caribbean Sea on 21 October 2025 — and 1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Infrared and Visible images (above) showed that most of the deep convection (which often exhibited abundant GLM-detected lightning activity) remained west of Melissa’s surface center of circulation, due to moderate west-southwesterly deep-layer wind... Read More

Loading map … let cimssInteractiveMapBaseUrl = 'https://cimss.ssec.wisc.edu/satellite-blog/wp-content/themes/cimss'; To celebrate the 50th anniversary of the GOES-A launch (GOES-A became GOES-1 on reaching geostationary orbit), this blog post contains one or two satellite animations (or images) for each of the 50 states. More on GOES-1 through GOES-19.There were experimental geostationary imagers (ATS and SMS) that preceded the first GOES.... Read More

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible and Infrared images (above) showed Hurricane Imelda as it intensified from a Category 1 to a Category 2 storm (at 1800 UTC) while approaching Bermuda on 01 October 2025. GLM Flash Points revealed very little satellite-detected lightning activity within the eyewall of Imelda.About an hour prior... Read More

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) showed Hurricane Humberto as it intensified from a Category 4 to a Category 5 storm on 27 September 2025 (Humberto became the second Category 5 storm in the Atlantic Basin this season — with Erin being the first). Low-altitude mesovortices were evident within... Read More