Weather Underground Forecast for Thursday, December 06, 2012.
Much of the West will experience drier and calmer weather on Wednesday as the frontal system impacting the region moves into the Northern Plains and Upper Midwest. As the system progresses, a mix of light to moderate rain and snow showers are expected to develop ahead of this disturbance rom the Dakotas through Wisconsin. Precipitation will fan out along and ahead of the cold front by Thursday evening reaching from areas of northern Michigan through the Mid-Mississippi Valley. Meanwhile, the southern tail of this front will extend back through the Intermountain West with a few areas of light scattered precipitation. As this system exits, cooler pieces of energy will begin to spread into the Northwest. While an upper ridge of high pressure is expected to amplify offshore, it will not prevent frontal moisture from moving inland and kicking up a few rain and snow showers.
In the East, showers and thunderstorms will continue across the Southeast as a cold front lingers over the area into Thursday morning. This activity is expected to wind down during the day as the front moves slowly offshore. Meanwhile, colder and drier air spreads into the Northeast and Mid-Atlantic, leading to significantly colder daytime highs. This will allow temperatures to return back to near normal values for early December.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 3 degrees at Silver Bay, Minn. to a high of 81 degrees at Tampa Macdill AFB, Fla.