National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

Moderate to heavy snow spreads from west to east today, lasting through tonight and into early Monday morning. Highest amounts of 5-10 inches are expected north of Interstate 90, with there being a low chance (10-20%) that some locales could near a foot in west-central Wisconsin. Strong northwest winds increase this afternoon, resulting in blowing snow areawide and blizzard conditions likely west of the Mississippi River this evening into the morning on Monday. Finally, the rapidly falling temperatures this afternoon, combined with the warm and wet roads, could result in untreated roadways developing icy spots. Bottom line, those with travel plans during this time should look for ways to avoid the storm.
Strong northwesterly winds gusting to 35 to 45 mph increase behind a cold front this afternoon and last into Monday morning. These winds, combined with falling snow, will result in blowing snow and difficult travel--blizzard conditions west of the Mississippi River. Please exercise caution if driving.
With a winter storm bearing down on the region today into Monday, the first in quite some time, keep up-to-date with the forecast and ensure your car is ready in must travel in the snow.