NOAA-20 viewed the (mostly clear) Great Lakes twice early in the morning on 2 October 2023, as shown above. Day Night Band imagery shows convection moving from eastern Lake Superior (lightning strokes are apparent as bright smears in the images) into Ontario. (Day Night Band imagery shows great detail owing... Read More
1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) showed Ophelia for a few hours after it became a Tropical Storm at 1800 UTC on 22 September 2023. The low-level circulation center (LLCC) was initially exposed, but deep convection just to the west began to increase in coverage and intensity as it... Read More
GOES-18 (GOES-West) SO2 RGB images (above) showed the eastward drift of a volcanic cloud produced by an explosive eruption of Mount Shishaldin that began around 0150 UTC on 16 September 2023. Trace amounts of ash fall were observed at False Pass from 0200-0430 UTC.GOES-18 True Color RGB images from the CSPP GeoSphere site (below) helped to highlight the... Read More
A toggle between NOAA-20 (mislabeled as NPP) VIIRS Day/Night Band (0.7 µm) and Infrared Window (11.45 µm) images valid at 0735 UTC on 29 August 2023 (above) showed Tropical Storm Idalia about 1.5 hours before it reached Category 1 hurricane intensity at 0900 UTC. A large convective burst was evident just northeast of... Read More
