US National Weather Summary for October 8,2012

Here's the US National Weather Summary for Monday,October 8 (Columbus Day),2012,as of 11PM,EDT/ 8PM,PDT,October 8,2012,from weatherunderground.com,enjoy:











Much of the East began the work-week with chilly temperatures on Monday morning as a cold dome of high pressure extending from Southern Plains through the Ohio Valley shifted northeastward into the Northeast and the upper Mid-Atlantic. After a cool start this morning with temperatures ranging from near the freezing mark to the lower to mid-40s in most areas, daytime temperatures in the northeastern quadrant of the nation were slow to recover during the afternoon. Daytime highs for the Northeast, upper Mid-Atlantic, the western Ohio Valley and the Great Lakes ranged from the mid-40s to the 50s and lower 60s. Meanwhile, cold flow associated with this system spread across the warmer waters of the Great Lakes and triggered lake-effect precipitation downwind of Lake Michigan, Lake Erie, and Lake Ontario through the early afternoon.

Elsewhere in the East, a cold front and wave of low pressure became nearly stationary across the southeastern corner of the nation and the eastern Gulf of Mexico, while a disturbance lifted from the Tennessee Valley int the Mid-Atlantic This translated into continued showers and thunderstorms from Florida northward through the Mid-Atlantic during the day.

Behind this activity, a storm system skirting along the U.S.-Canadian border dipped southeastward into the Dakotas and Minnesota this afternoon. Light rain showers accompanied this system across parts of North Dakota and northern Minnesota, while a mix of rain and high elevation snow developed in the Northern Rockies and Northern High Plains. A total of 2 to 4 inches of wet snow were anticipated in the mountains and about an inch or two were expected in the foothills.