A semi-truck toppled in the wind on I-15 in Centerville, Utah on Thursday, Dec. 1, 2011. High winds ripping through Utah have overturned several semi-trucks, knocked out power to more than 50,000 customers and prompted school closures. (AP Photo/The Salt Lake Tribune, Leah Hogsten)
A semi-truck toppled in the wind on I-15 in Centerville, Utah on Thursday, Dec. 1, 2011. High winds ripping through Utah have overturned several semi-trucks, knocked out power to more than 50,000 customers and prompted school closures. (AP Photo/The Salt Lake Tribune, Leah Hogsten)
A semi truck toppled by the wind on US-89 near Cherry Hill in Farmington, Utah on Thursday, Dec. 1, 2011. High winds ripping through Utah have overturned several semi-trucks, knocked out power to more than 50,000 customers and prompted school closures. (AP Photo/The Salt Lake Tribune, Leah Hogsten)
A semi truck toppled in the wind on Park Lane in Farmington, Utah on Thursday, Dec. 1, 2011. High winds ripping through Utah have overturned several semi-trucks, knocked out power to more than 50,000 customers and prompted school closures. (AP Photo/The Salt Lake Tribune, Leah Hogsten)
Binder Lopez rides his bike under a fallen traffic signal caused by high Santa Ana winds at the corner of Lake Avenue and Claremont Street, Thursday, Dec. 1, 2011, in Pasadena, Calif. Some of the fiercest winds in years slam California and move across the West, with gusts near 100 mph flipping trees and trucks, snarling air traffic and knocking out power to hundreds of thousands. (AP Photo/Bret Hartman)
A photographer shoots a picture of a crushed car with the stump of the tree that fell on it and a broken light pole in the background in Ogden, Utah after a wind storm on Thursday, Dec. 1, 2011. High winds ripping through Utah have overturned several semi-trucks, knocked out power to more than 50,000 customers and prompted school closures. (AP Photo/Standard-Examiner, Robert Johnson)
A worker trims a tree and helps clean up the damage caused by a fallen tree because of high winds at a Shell gas station, Thursday, Dec. 1, 2011, in Pasadena, Calif. Some of the fiercest winds in years slam California and move across the West, with gusts near 100 mph flipping trees and trucks, snarling air traffic and knocking out power to hundreds of thousands. (AP Photo/Bret Hartman)
