Indian Ocean Cyclone Freddy had an unusually long track and lifespan as it crossed the southern Indian Ocean. The animation above (created using geo2grid software) shows hourly Himawari-9 Clean Window infrared (10.4 µm) imagery from 5 February through 19 February, when Freddy could no longer be viewed by that geostationary... Read More
US Space Force EWS-G1 (formerly GOES-13) Infrared Window (10.7 µm) images (above) showed Category 3 Cyclone Freddy making landfall along the east coast of Madagascar on 21 February 2023.According to products from the CIMSS Tropical Cyclones site, during the 12-15 hours leading up to landfall Freddy was traversing warm water with Sea Surface Temperature... Read More
Heavy Rains overspread the Samoan Islands late on 20 February/early on 21 February 2023. ASCAT scatterometry from 0845 UTC on 21 February, above, (from this website), shows strong northerly winds Equatorward of the Samoan Islands, and weaker winds to the south: surface convergence is indicated. The animation below shows GOES-18 Visible imagery... Read More
SAR data collection over Cyclone Freddy in the Indian Ocean has led to a remarkable collection of imagery. To date, more than twenty eye overpasses have occurred from RADARSAT-2 (3 overpasses), Sentinel 1A (1 overpass) and the three satellites of the RADARSAT Constellation Mission (17(!) overpasses). The animation above shows... Read More
