Chilly, Wet Weather to Target Arizona, New Mexico

December 14, 2010; 7:35 AM ET
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The same storm system socking the Northwest with drenching rain and heavy mountain snow today will usher a shot of cooler air into the West over the next few days. Late on Wednesday into Thursday a disturbance will spark showers over the Southwest.

On Wednesday night, spotty showers could dampen Los Angeles, San Diego and Las Vegas before expanding over the Four Corners on Thursday. A large part of this region has been abnormally dry lately.

Any rain that does fall could wash residue oil to the surface of area roadways, making them slick. Travelers along portions of Interstates 70, 40, 10, 25 and 17 should use caution while driving on the wet roads.

During the weekend and on Monday, record-breaking warmth gripped the Southwest, with high temperature records falling in many cities and towns including Los Angeles, Calif., Phoenix, Flagstaff and Yuma, Ariz., Winnemucca, Nev., and Navajo, N.M. The mild temperatures will fall away over the next few days as a cold front passes through.

Thermometers surging as much as 5 to 10 degrees above normal today will be replaced by below-average temperatures as the week comes to a close.

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