Antarctica

Weather Underground Forecast for Tuesday, October 07, 2008.

Severe weather will continue sweeping across the Plains on Tuesday. A low pressure system will produce a cold front that will extend from the Upper Midwest into northern Texas and will kick up showers and thunderstorms as it moves eastward toward the Mississippi Valley. Severe weather is likely to develop anywhere along this front because it has a history of producing strong winds and hail.

In the East, a high pressure system will slowly get pushed to the east by the low pressure system over the Plains. Thus, high pressure will continue to dominate the weather on Tuesday and will allow for mostly sunny skies and dry conditions over New England, the Mid-Atlantic states, and the Southeast. Frost will threaten northern areas and high elevations as high pressure will also allow overnight lows to drop to near freezing temperatures.

The Pacific Northwest will see wet weather on Tuesday as a low pressure system continues to move in from the Pacific. This system will push a cold front over the region, triggering widespread scattered showers as it moves east. Snow is also likely at elevations higher than 4000 ft. This system will remain in the north, so warm and dry conditions will persist over California and the Southwest as high pressure builds.

Temperatures in the Lower 48 states Monday ranged from a low of 17 degrees at Copper Mountain, Colo to a high of 97 degrees at Thermal, Calif.