AWIPS images of POES AVHRR 0.86 µm visible channel data (above) revealed a pair of von Karman vortices streaming southward from the Aleutian Islands of Alaska on 14 April 2011. In this 2-image comparison, note that the cloud features were moving, but the ice in the Bering Sea remained stationary.An... Read More

Following a record-setting 27 inches of snowfall in a 24-hour period on the previous day, new all-time record low temperature was set for the state of Oklahoma when Nowata dropped to -31º F (Tulsa OK Public Information Statement) on the morning of Read More

A comparison of MODIS Red/Green/Blue (RGB) “true color” (created using Bands 1/4/3) and “false color” (created using Bands 7/2/1) images from the SSEC MODIS Today site (above) showed a well-defined single lake-effect snow (LES) band running down the length of Lake Michigan on 08 January 2011. On the false color image, snow cover, ice, and glaciated clouds appeared as cyan-colored... Read More

A strong cyclone was located over the northern portion of Hudson Bay, Canada on 18 November 2010 — and McIDAS images of GOES-13 0.63 µm visible channel data (above) showed the formation of widespread cloud bands due to very cold arctic air flowing... Read More