LAKE COUNTY, Calif. – Portions of the North Coast – including northern Lake County – remain under a winter weather advisory due to rain and, in some higher elevations, snow forecast through Wednesday.

The National Weather Service’s advisory remains in effect until 4 a.m. Wednesday above 2,000 feet.

The agency said a cold upper level storm system will gradually move south along the West Coast through midweek, bringing an extended period of showery weather and snow accumulations of between 4 and 12 inches across the mountains.

On Monday, modest rainfall was recorded around the county. The National Weather Service’s observation stations reported the following 24-hour rainfall totals in inches through 12 a.m. Tuesday:

– Bartlett Springs: 0.10.
– Cache Creek near Lower Lake: 0.07.
– County line (at Colusa side): 0.09.
– Hidden Valley Lake: 0.17.
– Kelseyville: 0.05
– Knoxville Creek: 0.07.
– Lyons Valley (northwest of Lakeport): 0.13.
– Soda Creek: 0.29.
– Upper Lake: 0.24.
– Whispering Pines: 0.20.

Snow also was reported by the California Highway Patrol in the area of Harrington Flat Road in Cobb.

The National Weather Service said showers are forecast to bring up to half an inch of rain in the lower elevations on Tuesday, with between 3 and 7 inches of snow expected in higher elevations in northern Lake County.

On Wednesday, another quarter of an inch is forecast while up to 2 inches of snow is expected to fall in the mountains, forecasters said.

Forecasters expect heavy showers and thunderstorms in Lake County throughout the day on Wednesday, with the forecast noting the possibility for small hail.

Light winds are forecast on both Tuesday and Wednesday.

Foggy conditions are in the forecast during the day Thursday to be followed by frost on Thursday night, Friday morning and later on Friday night as well.

The National Weather Service said conditions will clear on Saturday, with a slight chance of showers on Sunday to be followed by mostly sunny conditions on Monday.

Despite the rain, Clear Lake’s level continues to be well below its seasonal average.

On Monday, Lake County Water Resources said Clear Lake was at 1.03 feet Rumsey, the special measure for Clear Lake, compared to nearly 3.60 feet Rumsey a year ago.

Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it.. Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.