The Storm Prediction Center in Norman OK issued a Moderate Risk of severe weather over the lower Ohio River Valley/mid-Mississippi River Valley on 8 May 2024, as shown below. (Here are the storm reports for that day). The orbits for MetopC and NOAA-20 on the 8th sampled the region well, as shown in the toggle above of NUCAPS Sounding Availability with... Read More
High Pressure over the Great Lakes on 25 April meant a spectacular true-color view of the 5 Great Lakes (apologies to Lake Champlain) by the VIIRS instruments on NOAA-20. A similar view was recorded at 1755 UTC by Suomi-NPP, shown below.Clear skies also meant a determination of Lake Surface Temperatures, shown below (compare these to Monday,... Read More
NOAA-20 overflew the Great Lakes early on 22 April 2024 (Earth Day) and the lack of cloud cover (except over northeastern Lake Superior) allowed a determination of Lake Surface Temperatures over most of the Great Lakes. As is usually the case, Lake Erie is the warmest lake, with temperatures near... Read More
A sequence of Suomi-NPP VIIRS Visible (0.64) images (above) displayed the cyclonically-curved cloud structure associated with an Arctic low pressure system (surface analyses) located between Alaska and the North Pole on 14 April 2024. A blend of Atmospheric Motion Vectors derived from NOAA-20 and NOAA-21 (below) showed the flow pattern at... Read More
