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Sierra Nevada Winter Storm Watch Issued

The National Weather Service has issued a Dense Fog Advisory for the Northern San Joaquin Valley until 10 AM this morning.

Visibility is less than one quarter mile. Poor visibilities will lead to reduced vision of turns and other vehicles on the roadway.

A Dense Fog Advisory means visibilities will frequently be reduced to less than one quarter mile. If driving, slow down, use your low beam headlights and leave plenty of distance between you and the car ahead of you.

Additionally, a Winter Storm Watch for the Sierra Nevada is now in effect from late Wednesday night through late Thursday night.

A strong winter storm will affect the region from late Wednesday night into early Friday. Periods of heavy snow and strong gusty winds are expected, resulting in treacherous travel conditions across the Sierra. Travel delays and chain conditions are likely Thursday into early Friday.

Snow levels are expected to lower to around 4000 feet by Thursday evening with some levels down to around 3000 feet.

Some snow accumulation is possible down to 3000 through 4000 feet. Total snow accumulations of one to three inches are likely at 4000 feet. Snow accumulations of half-a-foot to one foot are expected above 5000 feet. Snow accumulations of one to three feet are likely above 7000 feet.

The heaviest precipitation is expected from early Thursday morning through Thursday afternoon. Rainfall amounts will range from 0.3 to 1.5 inches in the Central Valley. Rain totals will range from one to four inches in the Mother Lode and the Sierra Nevada.

Wind gusts of up to thirty-five mph are forecast in the Central Valley. Winds of twenty-five to thirty-five mph are forecast in the Sierra Nevada with fifty to seventy mph wind gusts near the crest of the Sierra.

There is a chance for thunderstorms on Thursday afternoon and evening. Debris flows are possible over recently burned areas on Thursday and Thursday night. Additionally, localized road flooding and/or ponding is possible from wind-blown leaves clogging rain gutters. The storm could lead to local power outages, downed branches and whiteout conditions in the mountains.

A Winter Storm Watch means there is a potential for significant snow that may impact travel.