10-minute Full Disk scan GOES-18 (GOES-West) Air Mass RGB images (above) showed a compact polar low as it migrated southeastward across the Bering Sea (not far south of the sea ice edge: surface analyses) on 27-28 January 2024. As the polar low moved through the Pribilof Islands on 28 January, St Paul Island (PASN)... Read More
5-minute CONUS Sector GOES-16 (GOES-East) Ash RGB, Dust RGB, SO2 RGB and Split Window Difference images (above) displayed signatures of a series of volcanic cloud pulses produced by minor eruptions of Popocatépetl on 27 January 2024. This comparison highlights the fact that the Ash RGB might not always provide the best depiction of volcanic cloud structure... Read More
Target Sector (2.5-minute interval) JMA Himawari-9 AHI Red Visible (0.64 µm) and Clean Infrared Window (10.4 µm) images (above) showed Invest 90P as it intensified to become Tropical Cyclone Kirrily over the Coral Sea on 23-24 January 2024. Visible images showed multiple exposed low-level circulation centers, while Infrared images showed that deep convection was mainly developing west... Read More
A toggle between NOAA-20 VIIRS Day/Night Band and Infrared Window images valid at 0827 UTC (2:27 AM local time) on 22 January 2024 (above) showed an opening of the Kivalliq Polynya along the northwest coast of Hudson Bay — which was the result of a period of strong offshore winds (Arviat Airport CYEK observations),... Read More
