The National Weather Service says a series of wet systems from the northern Pacific Ocean could bring more than an inch of rain to some areas. The precipitation is likely to continue through the weekend.
A winter weather advisory is in effect Wednesday for Lake Tahoe and much of the Sierra's eastern front where up to a foot of snow is expected by Thursday morning.
The National Weather Service says the heaviest snow is expected during the day Wednesday. Between two and four inches of snow is expected at lake level at Tahoe.
Meanwhile, the snowpack atop mountain peaks in California has a new set of eyes to better gauge the amount of spring runoff. NASA has fixed a twin-engine plane with high-tech equipment to make regular snow surveys in the state.
Snow increasing in mountains today. Images are of expected snowfall totals for today and tonight. http://t.co/KhspxgDEFB— NWS Sacramento (@NWSSacramento) March 26, 2014
Isolated valley t-storms expected later today. Potential for weak funnel clouds and/or tornadoes in Sac Valley. pic.twitter.com/94gPSH9yWp— NWS Sacramento (@NWSSacramento) March 26, 2014
Highway 140 will reopen Thursday afternoon after a mudslide made the road impassable in Yosemite National Park.
The "well above-average" rain of the past three months in California has not brought any improvement to drought conditions in the state.
The National Weather Service in Reno is warning of flash flooding in the Reno and Truckee areas until 5:15 p.m. The weather service is reporting severe thunderstorms and hail.
The National Weather Service is forecasting thunderstorms for the Sierra starting Tuesday through Thursday.
The National Weather Service has issued a flash flood warning until 6:30 p.m. Monday for the Dayton and Stagecoach areas of northern Nevada.