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

5-minute CONUS Sector GOES-19 (GOES-East) Nighttime Microphysics RGB images from the CSPP GeoSphere site (above) depicted a nocturnal arc of low-level cloud bands (pale shades of white) associated with an undular bore produced by the outflow boundary from a decaying Mesoscale Convective System (MCS) over northern Iowa on 28 July 2025 — however, the boundary... Read More

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible images (above) showed the rapid development of thunderstorms that produced strong wind gusts across parts of northeast Illinois and northwest Indiana on 24 July 2025 — forcing ground stops for all scheduled inbound flights to Chicago’s Midway and O’Hare airports (beginning at 1945 UTC). The peak... Read More