The nation's weather

AP News
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Posted: May 25, 2011 4:39 AM
The nation's weather

Tuesday's severe weather event for the Plains will continue through the morning hours Wednesday across the southern Plains, then shift eastward towards the Mississippi Valley later in the day.

The most threatening storms will likely occur in the morning hours Wednesday, with dangerous tornadoes possible in the early morning. Residents of the southern Plains should be alert to rapidly changing weather conditions and be prepared for numerous tornadoes.

As the focus shifts eastward later in the day, conditions will be slightly less favorable for severe weather development, which should help to spare some of the more highly populated areas to the east from some of the highest risk of tornadoes. Despite the lower risk, the region will still see tornadoes late in the day, they will just be less numerous.

The Northeast will see clearing conditions on Wednesday as Tuesday's thunderstorms move out to sea, replaced by high pressure and clear skies. Temperatures should be pleasant, with highs in the 70s for most locations outside of the higher mountains. The Southeast will also see generally pleasant conditions, but temperatures during the middle of the day will be quite warm with high humidity.

In the West, late season rains will push through Northern California and the Northwest. Precipitation will make it as far south as the San Francisco Bay Area along the coast, then move into the Sierras where some heavy high elevation snow is possible.

Temperatures in the Lower 48 states Tuesday ranged from a morning low of 24 degrees at Klamath Falls, Ore., to a high of 101 degrees at Laredo, Texas.