A sequence of Suomi-NPP VIIRS Infrared Window (11.45 µm) images (above) displayed the development of a coma-shaped cloud structure associated with a low pressure system near the North Pole (northwest of Greenland) on 13 February 2024. The single METAR surface report plotted is Svalbard, Norway (the reports for CWLT —... Read More
The Direct Broadcast antenna at the UW-Madison CIMSS can receive information over much of the contiguous United States. This includes the NOAA-20 overpass that acquired data around 0910 UTC over southern California during a frontal passage. NOAA-20 supports both the Visible Infrared Imaging Radiometer Suite (VIIRS) and the Advanced Technology Microwave Sounder... Read More
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
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
