LDN - Weather

The nation's weather

[October 28, 2011] (AP) Wet and active weather will develop from the lower Mississippi Valley to the Tennessee Valley on Friday.

(Click on map for larger image.)

A low pressure system that moved off the Rockies and into the southern Plains will continue moving eastward, into the Southeast. A cold front will lead the system eastward, extending from eastern Texas, over the lower Mississippi River and eastern valleys, into the southern Appalachians. The system will continue to pull moisture in from the Gulf of Mexico, producing scattered showers and thunderstorms throughout the day. Some of these storms may turn severe with strong winds and hail. Rainfall totals will range from 1 to 2 inches in most areas, with more rain possible in areas of severe storm development.

Meanwhile in the Northeast, a low pressure system will pull eastward and into the Atlantic Ocean. Thus, rain and snow showers will diminish across the Northeast as higher pressure builds in. However, this ridge of high pressure will create cool northern flow from Canada, allowing for cold temperatures to prevail. Expect daytime highs to range in the 40s and 50s, while overnight lows will remain in the mid-30s. Frost advisories have been issued from the Ohio River Valley to the Mississippi River Valley, while freeze and hard freeze advisories remain in effect for the extreme Northeast.

Out West, a low pressure system dips southward from the Gulf of Alaska and pushes a cold front into British Columbia and the Pacific Northwest. This will create scattered rain showers for Oregon and Washington, with snow showers developing at high elevations of the Cascades in the afternoon and evening. Meanwhile, high pressure to the south brings more sunshine and pleasant temperatures to California and the Southwest.

Temperatures in the Lower 48 states Thursday ranged from a morning low of minus 15 degrees at Laramie, Wyo., to a high of 92 degrees at Edinburg, Texas.

___

Online:

Weather Underground: http://www.wunderground.com/

National Weather Service:
http://iwin.nws.noaa.gov/

Intellicast:
http://www.intellicast.com/

[Associated Press article from Weather Underground]