Water vapor imagery from the GOES-11, GOES-12, and GOES-13 satellites (above) showed the spin-up of a well-defined “stratospheric intrusion vortex” over western Kansas on 14 March 2009. The imagery from each of those 3 satellites is displayed in its native projection, which... Read More

Strong winds over much of the southwestern US (surface winds gusted to 75 mph at Sierra Rotors Site 7 in California) were responsible for producing large areas of mountain waves across a good deal of that particular region on Read More

Beginning on 09 March 2009, two new Blended Total Precipitable Water (TPW) products were made available to NWS forecast offices who have installed AWIPS Operational Build 9 (OB9) — a Blended TPW product (above; Animated... Read More

An impressive display of “ship track” plumes was seen on GOES-11 visible images (above; also available as a QuickTime animation) over the Gulf of Alaska on 04 March 2009. Most of the ships in that region were traveling... Read More