A recent blog post detailed a heavy rain event over the Kona section of Hawai’i, and the rain occurred several hours after NOAA-20 overpasses that included an unfortunately-placed data gap that included the Big Island of Hawai’i. Thick clouds over the region meant geostationary satellites could not provide information about the thermodynamics surrounding Hawai’i. The image below shows the early morning NOAA-20 orbits on this day. The pass just after 1100 UTC was far... Read More

Target Sector (2.5-minute interval) JMA Himawari-9 Visible and Infrared images (above) covered the period when Typhoon Mawar reached Category 4 intensity at 0000 UTC on 23 May 2023 (JTWC advisory | SATCON | ADT). Mesovortices within the eye were evident in the Visible imagery, and cloud-top infrared brightness temperatures surrounding the eye were... Read More

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

Polar2Grid version 3.0 (released earlier this year; see this blog post, and this one on displaying individual VIIRS channels) has the capability (like earlier versions) to create imagery from selected individual ATMS (Advanced Technology Microwave Sounder) channels, and for some derived products as well. In this example, I would like to create imagery on February 3rd and 4th around the Hawai’ian... Read More