1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Clean Infrared Window (10.3 µm) images (above) showed a cluster of thunderstorms that eventually congealed into a large Mesoscale Convective System, producing a tornado, hail as large as 2.75″ in diameter and wind gusts as high as 99 mph (SPC Storm Reports) across parts of eastern... Read More
A radiometrically retrieved Himawari-9 Ash Height product from the NOAA/CIMSS Volcanic Cloud Monitoring site (above) showed the volcanic cloud produced by the first recorded eruption of Krasheninnikov on the Kamchatka Peninsula of Russia, which began around 1650 UTC on 02 August 2025 (KVERT advisory). The Ash Height reached the 7-8 km range (darker shade... Read More
5-minute CONUS Sector GOES-19 (GOES-East) Nighttime Microphysics RGB + daytime True Color images from the CSPP GeoSphere site (above) showed a remnant Mesoscale Convective Vortex (MCV) that migrated eastward from southeastern Montana to northwestern South Dakota — where it helped to force the rapid development of a slow-moving Mesoscale Convective System (MCS) during the afternoon... Read More
5-minute PACUS Sector GOES-18 (GOES-West) Nighttime Microphysics RGB and daytime True Color RGB images (above) revealed the cyclonic circulation of an actinoform cloud feature as it passed just north of the Hawaiian Islands on 30 July 2025.GOES-18 Visible images (below) included plots of Ship and Fixed Buoy reports — unfortunately,... Read More
