2.5-minute rapid scan (Target Sector) JMA Himawari-9 “Red” Visible and “Clean” Infrared Window images (above) showed Category 4 Cyclone Ilsa as it approached the northwest coast of Australia, eventually making landfall near Port Hedland (station identifier YPPD) just after 1500 UTC on 13 April 2023. Overshooting tops within the eyewall... Read More
The SAR wind analysis above shows curious banded wind features over central Lake Huron. The bands have a vertical separation of around 10 km and exist just south of essentially calm winds (magenta in the enhancement used). Peak winds within the bands 8-10 m/s, and the (weaker) winds in between... Read More
Sentinel-1A orbits have a repeat cycle of 12 days, and the second observation in April over Samoan waters occurred on 13 April, as shown above (there were SAR winds created in this domain on 1 April as well, here, on a similar weak-wind day). Diagnosed winds are uniformly light (3-7 knots) in... Read More
