A slow-moving storm has unleashed heavy rain and snow across California. This has resulted in reports of road closures from heavy snow, flash flooding and rock/mud slides.
Rainfall has added up to near 3" in San Francisco over the last 2 days with over 6" reported in the Santa Cruz Mountains. The L.A. Basin also got a nice dose of rain today with Downtown L.A. picking up just over and inch of rain so far.
Through this evening, a few severe storms--capable of producing hail, funnel clouds, waterspouts and weak tornadoes--may crop up along and near the Central and Southern California coast.
The rain and snow will persist in the Golden State through tonight, but will become somewhat lighter in most spots as the main body of moisture shifts into the Intermountain region.
Showers will mainly target Central California including the Bay Area Tuesday with more snow for the Sierra Nevada. Snow totals from this entire storm will be in the 2 to 4 foot range in the Sierra. A few showers will continue in Southern California as well.
Farther east tonight, heavy snow will coat some mountain and high plateau locations in southern Nevada, northern Arizona and Utah. Winter storm warnings and winter weather advisories are posted in southern Nevada and the high terrain of Utah, Colorado, Arizona, and New Mexico.
Energy ejecting out of the West will begin to develop a storm in the Central U.S. Tuesday. Low pressure will develop in the Plains and begin to head northeastward. Increasing Gulf moisture will interact with this new storm bringing snow to portions of the Upper Midwest and Great Lakes. Winter storm watches are posted from Wisconsin to northern Lower Michigan. These areas may see 4 or more inches of snow beginning later Tuesday.
On the southern end, showers and thunderstorms will begin to erupt. Isolated severe storms may develop Tuesday night from northeast Texas and northwest Louisiana eastward to northwest Mississippi and southwest Tennessee.
By Wednesday, the storms effects will spread into the Southeast and Northeast. Some locations such as Philadelphia and New York City may start wintry and then see the precipitation turn to rain. On the southern end, severe storms may impact areas from southeast Texas and Louisiana to western and central portions of Georgia. A few severe storms may also roam as far north as the Ohio Valley. The downpours may bring an inch or more of much needed rainfall to portions of the Southeast.