The nation’s weather
By Weather Underground, APWednesday, December 23, 2009
The nation’s weather
Wet weather was forecast to persist in the South on Tuesday, while snow was expected to diminish over the Northeast.
A low pressure system that brought rain to the Southern Plains before moving into the Gulf states was forecast to pull more moisture onshore from the Gulf of Mexico. The system was expected to create a front tracking from Georgia to the Carolinas and trigger scattered showers throughout the day.
Less than an inch of rain was expected in most areas, but short periods of heavy rain could develop. Overcast skies with a chance of showers could stretch into the Lower Mississippi and Tennessee Valleys. High temperatures in the 50s were expected in the Southeast.
To the north, a low pressure system hovering offshore was expected to push further east into the Atlantic Ocean and decrease moist flow over the region, allowing for less rain and snow. High pressure was forecast to build in from the west and start to dry out the region. High temperatures could approach the 40s over New England.
In the Central U.S., a large high pressure system was expected to continue building over the Plains and allow for another sunny and warm day. The Northern Plains could see highs near 40, while the Southern Plains were expected to return to the 60s.
The ridge also was expected to continue spilling over the Mississippi and Great Lakes, allowing for warmer and drier conditions.
In the West, a low pressure system spinning off the West Coast was forecast to create a cold front that could push moisture onshore. Scattered showers were expected in the Pacific Northwest and California, with up to an inch of rain expected. Light snow could reach the Sierras and Cascades by Tuesday night.
On Monday, temperatures in the Lower 48 states ranged from a low of negative 9 degrees at Devils Lake, N.D., to a high of 84 degrees at Brownsville, Texas.