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[May 01, 2010] (AP) The chance for severe weather was expected to continue through very early Saturday morning as the Storm Prediction Center predicted a high chance of tornadic development in Arkansas and a moderate risk into Missouri.

(Click on map for larger image.)

Even after the early morning hours, a slight risk of severe weather was expected to continue from eastern Texas through Ohio.

The active weather was expected due to a strong cold front that was to progress through the Mississippi Valley and into the Ohio Valley. Substantial moisture was expected to be drawn northward from the Gulf of Mexico, producing heavy rain, strong thunderstorms and a threat of tornadoes. Residents in the affected area were asked to monitor local weather conditions closely and be prepared for strong wind, hail and possible tornadoes.

Elsewhere, scattered rain and high elevation snow was expected to continue in the northern Rockies and Intermountain West.

There were expected to be two distinct air masses in the country Saturday. Cold air in the West and Plains was predicted to keep temperatures mild, while warm air streaming into the eastern third of the country was expected to allow temperatures to warm considerably.

Temperatures in the Northeast were forecast rise into the 80s, while the Southeast was expected to see very warm temperatures in the 80s, 90s and some 100s. Southern Plains temperatures were forecast to rise into the 80s, 90s and some 100s as well, while the Southwest was expected to see temperatures in the 70s and 80s.

Temperatures in the Lower 48 states Friday ranged from a low of 6 degrees at Wolf Creek Pass, Colo., to a high of 100 degrees at Kingsville Nas, Texas.

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On the Net:

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]