A strong “Alberta Clipper” system ushered in some of the coldest air of the 2008/2009 winter season on 12 January 2009 — in fact, it was so cold that AWIPS images of the GOES-12 10.7 µm IR channel data (above) showed that surface brightness temperatures as cold as -20º to -40º C... Read More

AWIPS images of the MODIS Sea Surface Temperature (SST) product at 16:22 UTC on 08 January 2009 and the closest corresponding RTG-SST model analysis at 00:00 UTC on 09 January (above) demonstrated some important advantages of the 1-km resolution MODIS satellite imagery for the analysis of small-scale water temperature details. The two... Read More

AWIPS images of the 4-km resolution GOES-11 fog/stratus product and the 1-km resolution MODIS fog/stratus product (above) showed widespread fog and stratus clouds in the central valleys of California as well as over the adjacent offshore waters of the Pacific Ocean on 08 January 2009. With the finer spatial resolution of the... Read More

AWIPS images of the GOES-11 6.7 µm water vapor channel (above) showed a very long and well-defined plume of moisture streaming northeastward from just north of the Hawaiian Islands to the Pacific Northwest on 07 January – 08 January 2009. The National Weather Service forecast office in Seattle,... Read More