The closest thing Sierra ski resorts have seen to a winter storm dusted the mountains overnight, but forecasters say more is on the way.
Chains were required briefly on Interstate 80 over Donner Summit, but all major Sierra highways were open with no controls just before daybreak.
A stronger system is expected to push into the mountains this evening and a winter storm watch goes into effect from dusk until tomorrow morning.
The storm is being fed by moisture out of the southern Pacific and is fairly warm, so snow levels will remain above 6,500-7,000 feet through tomorrow.
Up to six inches of snow could fall tonight at the higher elevations, possibly affecting travel over the summits on I-80 and US 50.
Rain or snow are forecast below 6,500 feet with rain likely across northern Nevada through the weekend.
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