The presence of three JPSS satellites — Suomi NPP, NOAA-20 and NOAA-21 — allows for animations at high resolution (I01 imagery on VIIRS has 375-m resolution) at even low latitudes. The animation over the island of Guam (at 13.4oN) shows the evolution of clouds between 0246 and 0358 UTC on... Read More
Orbits from NOAA-20 (link, from this site) show a NOAA-20 overpass over Tropical Storm Bret at around 1700 UTC on 21 June 2023. Data from NOAA-20 were available at this site by 1730 UTC, and downloading files from the VIIRS-I1-SDR and VIIRS-IMG-GEO directories (as discussed in this blog post), and running a simple Polar2Grid (software... Read More
GOES-16 (GOES-East) “Clean” Infrared Window (10.3 µm) + Fire Power (a component of the GOES Fire Detection and Characterization Algorithm FDCA), Shortwave Infrared (3.9 µm), Day Land Cloud Fire RGB and Fire Temperature RGB images (above) showed thermal signatures and pyrocumulus pulses associated with the Pulp Road Fire in far southeastern North Carolina on 16 June 2023. Beginning at 1646... Read More
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
