UPDATE: Heavy rain causes roadway flooding in Sacramento area

A line of thunderstorms moved through the Sacramento area Tuesday evening, producing heavy rainfall and roadway flooding.

As of 8:45 p.m., downtown Sacramento had received 0.65 inches of rain for the day, with 0.63 inches falling after 4 p.m., said Karl Swanberg, a forecaster with the National Weather Service. That brought the rainfall total for December to 6.55 inches and the season total to 8.76 inches, or 158 percent of normal, Swanberg said.

The thunderstorms caused flooding along portions of Sacramento’s major freeways, including Interstate 80 just west of Watt Avenue and Capital City Freeway near Exposition Boulevard, according to the California Highway Patrol’s incident website.

By 9 p.m., the storm was moving to the northeast, toward Roseville and Folsom. The National Weather Service warned of possible local flooding of low-lying and poorly drained areas.

Motorists are advised to slow down and watch for ponding water and hydroplaning.

A winter weather advisory is in effect through noon Wednesday for the west slope of the Sierra. Motorists traveling in the high country are advised to carry chains and be prepared for delays. Snow levels are expected to range between 4,500 and 5,000 feet, Swanberg said.

The Sacramento area saw a high of 62 degrees Tuesday, but temperatures are expected to drop Wednesday, with a high of 54 degrees forecast. Wednesday is expected to be mostly cloudy with some showers in the morning and a slight chance of rain in the afternoon.

Call The Bee’s Cathy Locke, (916) 321-5287.