During a period when American Samoa had been under a prolonged Flood Watch, the Weather Service Office at Pago Pago requested that a GOES-18 (GOES-West) Mesoscale Domain Sector be positioned over the region (due to their lack of radar). 1-minute Infrared imagery with GLM Flash Points (above) displayed deep convection with intermittent lightning activity... Read More
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible, Water Vapor and Infrared images (above) showed the development of vertically-propagating standing wave clouds over far northeastern South Dakota on 28 March 2026 — initiated by strong SW winds interacting with the topography of the Coteau des Prairies.The coldest cloud-top infrared brightness temperatures of the standing wave cloud... Read More
2.5-minute Target Sector JMA Himawari-9 AHI Infrared images (above) showed Cyclone Narelle after it had rapidly intensified to a 115 kt Category 4 storm (JTWC discussion | ADT | SATCON) off the coast of Western Australia on 26 March 2026. As Narelle moved southwestward toward the Exmouth Peninsula, it weakened slightly... Read More
5-minute CONUS Sector GOES-19 (GOES-East) Microphysics RGB images with an overlay of Next Generation Fire System (NGFS) Fire Detection polygons (above) showed the thermal signature of a fire that resulted from an explosion at the Valero oil refinery in Port Arthur, Texas late in the day on 23 March 2026. The initial NGFS thermal signature... Read More
