As high pressure associated with cold arctic air began to build over the eastern interior of Alaska and the Yukon Territory of Canada, a strong pressure gradient created intense gap winds through the channeled terrain of south-central Alaska on 21 October 2012. These winds... Read More

 AWIPS images of Suomi NPP VIIRS 11.45 µm IR channel data (above; click image to play animation) showed a very large storm moving slowly across the Arctic Ocean during the 13 October – 15 October 2012 period. Large areas of stationary sea ice could be seen over... Read More

AWIPS images of Suomi NPP VIIRS 0.64 µm visible channel data (above) and 11.45 µm IR channel data (below) showed a close-up view of the clouds associated with a strong storm (surface analysis) that was crossing the Aleutian Islands and entering the Bering Sea on 03 September... Read More

An unusually strong area of low pressure moved northward into the Arctic Ocean and intensified during the 05 August – 08 August 2012 time period — a storm this deep (965 hPa central pressure) is exceptional for the Arctic Ocean region, especially during the summer month of August. A comparison... Read More