Vonn finished in 1 minute, 52.61 seconds to beat American teammate Stacey Cook by 1.73 seconds.
Germany's Maria Hoefl-Riesch and Liechtenstein's Tina Weirather tied for third in 1:54.35 in the race interrupted a few times because of fog and poor visibility.
Vonn raced for the second time since returning from a stomach bug that landed her in the hospital. Last week in Aspen, Colo., the four-time overall champion finished 21st in the giant slalom, then skipped the slalom.
(Copyright 2012 The Associated Press. All Rights Reserved)