VIIRS infrared imagery (I05 imagery at 11.45 µm) from the NOAA-21 (mislabeled, alas, at Suomi NPP) show high-resolution infrared imagery at about 90-minute time-steps. Cold Cloud tops associated with a low pressure system bringing light snow to northern Alaska are apparent — but during the gap from 00-08 UTC on... Read More
True-color imagery from the CSPP Geosphere site, above, is annotated to identify a wildfire in progress. This is one of several fires over Oregon, as evidenced by the widespread smoke that is present across the region. The animation below, shows the evolution during the day of the fires. Pyrocumulonimbus (PyroCB)... Read More
The radiosonde profile from the balloon launch just before 0000 UTC 7 September, above, (imagery from the Wyoming Sounding site), shows a very moist airmass, with saturation from the surface up to 400 hPa, and relative dryess above that level. Total Precipitable Water was 63 mm.NOAA-20, NOAA-21 and Metop-C all provide NUCAPS (NOAA-Unique Combined Atmospheric... Read More
Geosphere Night Microphysics RGB imagery on 11 July 2024, below, shows a signal developing over (what was eventually called) the Cow Valley fire in rural eastern Oregon. The new fire developed just north of the Bonita Springs fire and to the west of the Huntington Mutual Aid fire. A consistent signal... Read More
