Target Sector (2.5-minute interval) JMA Himawari-9 AHI Red Visible (0.64 µm) images (above) and Clean Infrared Window (10.4 µm) mages (below) showed Super Typhoon Bolaven as it reached Category 5 intensity west of the Northern Mariana Islands at 0000 UTC (SATCON) on 11 October 2023. Bolaven was an annular tropical cyclone, exhibiting a symmetric eye surrounded by a... Read More
GOES-18 (GOES-West) Dust RGB images (above) showed a plume of resuspended volcanic ash (brighter shades of pink) from the 1912 Novarupta-Katmai eruption in Alaska, which was being transported offshore across the Shelikof Strait (and Buoy 46077, where the peak wind gusts were 31 knots) toward Kodiak Island on 10 October 2023. Surface ash within the Valley Of Ten Thousand Smokes was being lofted by a... Read More
The direct broadcast antenna at the NWS forecast office on Guam processed important information to show details of Typhoon Bolaven as it passed through the Marianas Islands on 10 October. The toggle above compares VIIRS band M07 (0.865 ) and Rain Rate derived from ATMS imagery at 0338 UTC, when the typhoon was east of Guam. It passed between... Read More
Target Sector (2.5-minute interval) JMA Himawari-9 AHI Clean Infrared Window (10.4 µm) images (above) and Red Visible (0.64 µm) mages (below) showed Tropical Storm Bolaven as it intensified to become a Category 1 Typhoon just southeast of the Mariana Islands at 0000 UTC (SATCON | JTWC advisory) on 10 October 2023. The coldest cloud-top infrared brightness temperatures, associated with... Read More
