Issued: 10:10 PM Dec. 12, 2019 – National Weather Service
...Periods of wet weather will continue through the weekend... A series of systems will bring additional rain and snow to the region through Sunday. Gusty winds will continue tonight into Friday morning with only light showers for the Sierra. A colder system late Friday morning into Saturday morning will bring lowering snow levels with increasing travel impacts for Sierra passes. Mainly rain is expected for western Nevada. This is the part of the storm that will bring the heaviest rain and snow totals but it is still modest by Sierra standards. Snow totals in the northern Sierra above 7000 feet are in the 6 to 12 inch range, locally higher, with up to 3 inches at Lake Tahoe level. Farther south into Mono County, 3 to 6 inches of snow is possible for the high Sierra with a dusting up to 2 inches for communities and passes along US-395. For northeast California, lower liquid totals along with high snow levels will limit snow accumulation. Passes west of Susanville may see a couple inches of snowfall with a dusting possible for valleys. The coldest system is expected by Saturday afternoon or early evening into Sunday morning with snow possible down to all valley floors. Snow totals north of Highway 50 will range from a dusting to 6 inches, even into western Nevada. However, we aren't able to pin down the location for the heaviest snows at this time. Keep in mind that it doesn't take much snow to bring travel difficulties and cars will pack down light snow amounts into ice. Bottom line: Travel is likely to be difficult for weekend travel and ski traffic crossing over the Sierra, with slick conditions possible for portions of western Nevada Saturday night into Sunday. Make sure you are ready for winter driving conditions and allow extra time to reach your destination.