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[June 15, 2010] (AP) Severe weather was forecast to persist in the Midwest and central U.S. on Tuesday, while wet weather would return to the Pacific Northwest.

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A low pressure system was continuing to slowly track eastward from the central Plains and into the Great Lakes region. Flow around this system would allow for a stationary front to linger over the Ohio River Valley, while a cold front would stretch from the mid-Mississippi River Valley into the southern Plains. These fronts would continue to gain moisture and strengthen from the warm and moist air flowing in from the Gulf of Mexico, thus kicking up scattered showers and thunderstorms throughout the day. These storms had a history of turning severe, so large hail, damaging winds, heavy downpours and even tornadoes were expected. If storms did turn severe, they would most likely be contained to Texas and Oklahoma, as well as the Ohio River Valley. The Great Lakes would remain in the 60s and 70s, while the southern Plains will approach 100.

Out West, wet weather was forecast to return to the Pacific Northwest on Tuesday as a low pressure system pushed onshore from the Pacific Ocean. This would push a cold front onshore, which would also extend into northern California, triggering light and scattered showers. The Pacific Northwest would only see highs in the 50s and 60s, while California would see highs in the 60s and 70s. Another hot and dry day was expected in the Southwest as a ridge hovered over the region.

Temperatures in the Lower 48 states Monday ranged from a low of 30 degrees at Grand Canyon, Ariz., to a high of 104 degrees at El Centro, Calif.

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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]