RADARSAT-2 and RCM-1 had two closely-spaced overpasses over Cyclone Freddy in the Indian Ocean early on 16 February 2023, as shown above. Eyewall speeds exceed 130 knots in the RCM-1 data! (Imagery and data are available here). The quadrant analyses for RCM-1 and for RADARSAT-2 show hurricane-force winds extending out... Read More
JMA Himawari-9 Infrared Window (10.4 µm) images (above) showed Cyclone Freddy in the South Indian Ocean as it was rapidly intensifying from a Category 1 to a Category 3 storm by 12 UTC on 11 February 2023 (JTWC discussion), eventually presenting a ragged eye for several hours — then briefly reaching... Read More
RADARSAT Constellation Mission Satellite 1 (RCM-1) overflew tropical cyclone Freddy in the eastern Indian Ocean on 9 February, and Synthetic Aperture Radar (SAR) winds from the satellite captured a well-developed eye with (instantaneous) surface winds that peaked around 25 m/s. More information on SAR winds with Freddy is available here. The toggle above shows the storm center displaced significantly to the east... Read More
Himawari-9 Upper Level Water Vapor infrared (6.25 µm) imagery for the 8 hours ending 1300 UTC on 8 February 2023 show the nighttime blossoming of convection near the center of developing tropical cyclone Gabrielle to the east of Australia in the tropical southwest Pacific. The environment of the storm is... Read More
