Weather Underground Forecast for Friday, December 16, 2011.
The Central and Eastern US will dry up on Friday as a cold front moves offshore and into the Atlantic Ocean. The tail end of the front will stall over the Southeast and will continue to pull moisture in from the Gulf of Mexico. This will allow for periods of heavy rain showers to develop from the Tennessee Valley through the Mid-Atlantic states. Lighter rain showers will develop across eastern Texas and will diminish throughout the day. Rainfall accumulations will range from a half of an inch to an inch in these areas. North of this system, high pressure will build into the Great Lakes and Northeast, creating dry conditions and sunny skies with periods of strong winds. The Northeast will remain about 10 degrees above seasonable with highs in the 50s, while the Ohio River Valley and Midwest will start to cool with highs returning to the 30s and 40s. Further north, a trough of low pressure moving through central Canada will push even cooler air into the Northern Plains and Upper Midwest. High temperatures will only reach into the 20s across these areas.
Meanwhile out West, a low pressure system moves down the coast of California and will produce a few more scattered showers across southern California and northwestern Mexico. Snow may develop at high elevations of the southern Sierras. To the north, high pressure builds over the Pacific Northwest, allowing for a break in wet weather for Oregon and Washington. Temperatures in the Lower 48 states Thursday have ranged from a morning low of -9 degrees at Bryce Canyon, Utah to a high of 82 degrees at Harlingen, Texas