18 January Short Term

Forecast updated 1:27 pm EST - 18 Jan 2011

This map is a depiction of 1000-500 mb thickness. It is a forecast for Wednesday, January 19th at 1 PM in the afternoon. During this

time, most of the country is under the influence of a upper level trough. It can be seen below that the most of the northern parts of the continental United States is under a cold air mass, which allows for snow in areas of the midwest and lake effect snow in the Great Lakes region. The rising motion in the west is being primarily driven by vorticity advection, with a small amount of temperature advection. The model used was the GFS211.

today's short-range forecast graphic was produced by Matthew Dixon and Lacey Rhudy