The winter storm that's been packing a wallop in the Sierra is making its way down to the valley floors of western and northern Nevada.
The storm has dropped several feet of snow at Lake Tahoe resorts
and it doesn't appear to be in any hurry to leave the area.
Chains are mandatory on all roads over mountain passes. Westbound traffic on US Interstate 80 was halted altogether shortly after four o'clock this afternoon at the Nevada-California line just west of Reno.
Authorities say they don't know when it will reopen.
Eastbound traffic on I-80 also was stopped on the west side of the Sierra for a few hours this afternoon but the California Highway Patrol says it now is moving.
Forecasters say the foothills around Reno and Carson City could have as much as a foot of snow by morning. Six to eight inches is expected on the valley floors.
A winter storm warning remains in effect for the Lake Tahoe region through tomorrow morning. As much as two more feet of snow is forecast by two morning at elevations above seven-thousand feet.
The Mount Rose Ski resort southwest of Reno reports two to three feet of new snow since the storm moved in over the weekend.
(Copyright 2007 by The Associated Press. All Rights Reserved.)