The storm is forecast to bring between one-tenth of an inch and a quarter-inch of rainfall to the Bay Area, National Weather Service forecaster Diana Henderson said. Higher elevations in the North Bay and coastal mountains might get up to 1 inch of rain.
The storm system is promising up to 2 feet of snow in the northern Sierra.
The National Weather Service has issued a winter storm watch for western Plumas County and the west slope of the northern Sierra Nevada from this afternoon through Thursday morning. The winter storm watch is for areas above 5,500 feet, which are expected to experience periods of heavy snow and gusty wind.
The heaviest snowfall is expected Wednesday. The weather service says 1 to 2 feet of snow is expected above 6,000 feet before the storm system moves out Thursday morning.
Northern California will get a brief respite before more precipitation is expected to arrive Friday and over the weekend.
The storms will not make a significant dent in the drought.
“We’re so late in the rainy season, by the law of averages and the way the climate works here, it would almost be impossible to make up much ground on our drought situation unless we get very anomalous precipitation between now and the end of April,” National Weather Service forecaster Duane Dykema said. “The best we can hope for is to ease some of these deficits.”