Check out the weather report for Tahoe tonight.
Zone Forecast: Greater Lake Tahoe Area Last Update: 719 PM PST THU DEC 18 2008
Hazardous weather condition(s):
Special Weather Statement
Winter Storm Warning
Rest Of Tonight...Windy with snow and blowing snow. Snow accumulation of 4 to 8 inches...with up to 12 inches above 7000 feet. Lows 6 to 16. Southwest winds 20 to 30 mph. Gusts up to 50 mph. Ridge gusts up to 115 mph increasing to 140 mph after midnight.
I don't think this is normal, maybe?