A strength of the Night Microphysics RGB in the tropics is that it’s pretty easy to use it in regions of mostly clear skies to diagnose wind shear, because high clouds will show up as dark red, and low cloud show up as pale pink or cyan (see this annotated image). In... Read More

Northern California enjoyed a clear day on 23 January, and the animation above, from the CSPP Geosphere site, (click here for a direct — but not permanent — link to the animation) shows the shadow of Mount Shasta (see the still image below identifying both the mountain and the shadow) shortening over... Read More

GOES-18 Clean window infrared imagery (10.3 µm, displayed at full resolution in a special sector over American Samoa, in the latest AWIPS build) shows an area of convection, within a region of abundant moisture (GOES-18 Total Precipitable water values are close to 2.5″), approaching the Samoan islands (that are located... Read More

GOES-18 (GOES-West) Upper-level Water Vapor (6.2 µm), Mid-level Water Vapor (6.9 µm), Lower-level Water Vapor (7.3 µm) and “Clean” Infrared Window (10.3 µm) images (above) revealed the diurnal cycle of nighttime cooling and daytime warming at the summits of Mauna Kea and Mauna Loa on the Big Island of Hawai’i on 10 January 2023. In addition, a hot thermal... Read More