Breaking News
More () »

Timeline: How and when the 1st of 2 winter storms will sweep through Northern California

Cold air moves in as skies begin to clear overnight. This will lead to areas of dense fog.
Credit: AP
In this photo provided by the Mammoth Mountain Ski Area, a snowplow clears fresh snow around the Mammoth Mountain ski resort in Mammoth Lakes, Calif., on Monday, Dec. 13, 2021. Forecasters say the state's highest peaks could get as much as 8 feet of snow while lower elevations across California are in for a serious drenching of rain. The storm is expected to last days before moving out, but another storm is on the way. Forecasters warned people in mountainous areas to prepare for days of snowfall and possible road closures. (Peter Morning/Mammoth Mountain Ski Area via AP)

SACRAMENTO, Calif. — Rain, snow, and gusty winds continue to drop into Northern California Thursday into Friday morning.

Midnight not only brought a new month but also a much-needed wet period following a bone-dry second half of November. Two systems will impact Northern California back-to-back, with the first system moving through Thursday. 

We've already seen upwards of a third of an inch of rain across much of the valley, with 1 to 2 feet of snow near Donner as of Thursday night.

The first of the two storms created big travel impacts, closing I-80 several times Thursday due to blowing snow causing white out conditions and dangerous travel. 

An Avalanche Warning has been issued by the National Weather service into Friday morning.

Overnight Impacts

The rain and snow continues to shift southeast and out of the area leaving snow showers to taper off by midnight. 

Cold air moves in as skies begin to clear overnight. This will lead to areas of dense fog. In fact, a Dense Fog Advisory has been issued. Visibility could drop down to as low as a quarter mile for some areas. Fog could last from 1 a.m. to 9 a.m. in the valley and span an area from Redding to Turlock.

Near freezing temperatures may also lead to frost and freezing fog. This will cause more dangerous travel. Drivers are advised to take it slow for the Friday morning commute.


California Drought: The impacts on salmon and trout

Before You Leave, Check This Out