Clean-window infrared imagery centered on the Samoan Islands on 9 March 2025, above, show convective development north of Upolu that subsequently shows a cyclonic circulation. This system was accompanied by Flood Warnings, Heavy Rain Warnings and Marine Warnings and Wind Advisories over all of Samoa (Facebook link). Gusts exceeding 70 km/hr... Read More
10-minute Full Disk scan True Color RGB images from GOES-18 (GOES-West), GOES-17, GOES-19 (Preliminary/Non-operational) and GOES-16 (GOES-East) created using Geo2Grid (above) showed the slow drift of nearshore ice and the more rapid motion of lake effect clouds across southern Lake Michigan on 18th February 2025.The respective satellite locations over the Equator at... Read More
High spatial resolution satellites like the Landsat series operated by NASA and the US Geological Survey, or Sentinel operated by the European Space Agency, are often used for land process investigations. Their very high spatial resolution comes at the cost of less frequent overpasses over specific locations, and so they... Read More
Hourly GOES-18 infrared imagery (10.3 µm), above, shows the development of strong convection to the south of the Samoan Islands during the morning hours of 6 January (on American Samoa) or 7 January (Independent Samoa). Is this the start of a tropical system? Total Precipitable Water (MIMIC TPW) imagery from microwave data,... Read More
