Las Vegas ? Flights resumed in and out of Las Vegas, but schools and highways were closed Thursday after a record-setting snowfall coated marquees on the Strip, weighed down palm trees and blanketed surrounding mountain areas.

The city awoke to clear weather after a storm that left 3.6 inches at McCarran International Airport. It was biggest December snowfall on record there, and the worst for any month since a 7 1/2-inch accumulation in January 1979, forecasters said.

The storm Wednesday and early Thursday also dumped snow or rain and snarled travel in other parts of Nevada, much of southern California and parts of northern Arizona.

Cajon Pass and another leg of Interstate 15 near the Nevada line both reopened by midday Thursday, while Interstate 5, the major route between Northern and Southern California, partially reopened.