TRUCKEE, Calif. (CBS-SF and AP) – A cold weather front slowed traffic on the mountain passes Monday and dumped as much as eight inches of snow on the Sierra ski resorts.

Officials at Squaw Valley said eight inches had fallen by noon with snow showers expected to continue through the afternoon and evening.

The National Weather Service reported that three to four inches of snow had fallen at the Mount Rose Ski Resort near Reno and as much as 2 feet was expected above 8,500 feet before the storm moves on.

Chains or snow tires were required on most mountain highways around Lake Tahoe at midday Monday. The area remained under a winter weather advisory until 10 p.m.

The heaviest snow had moved south of U.S. Highway 50 by noon, the weather service said.

“So far, most reports we’ve received have been less than 12 inches, though high-elevation web cams show a bit more than a foot may have accumulated above 8,500 feet,” the service said.

“Round the Tahoe Basin, snow amounts have varied from trace amounts to 3 inches or snow in the vicinity of South Lake Tahoe and Meyers, (California),” it said.

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