A comparison of GOES-12 and GOES-13 visible images (above) showed a long lake-effect cloud band that was oriented generally north-to-south across Lake Michigan on 20 January 2009. Convergence of surface winds was helping to sustain the cloud band over the lake, which... Read More

AWIPS images of the  GOES-13 fog/stratus product (above) showed a patch of stratus cloud that developed quickly as it moved northeastward across southern Wisconsin during the pre-dawn hours on 06 January 2009. In advance of this cloud feature, air temperatures were dropping off as clear skies and light winds were promoting strong... Read More

AWIPS images of the GOES-13 fog/stratus product (above) showed a plume of advection fog curling northwestward across southern Oklahoma on 02 January 2009. A relatively moist low-level air mass with dew points in the 40s F was flowing from northeastern Texas into southeastern Oklahoma (where radiational cooling was allowing surface air temperatures... Read More

A potent shortwave trough was propagating eastward across the Upper Midwest region on 29 December 2008, and AWIPS images of the GOES-13 6.5 µm “water vapor channel” (above) showed a well-defined signature of mid-level dry air (yellow colors) moving rapidly east-southeastward over... Read More