LAKE COUNTY, Calif. — Following a snowy Monday that led to school closures, the National Weather Service forecast is calling for more snow on Tuesday ahead of a shift to a rainier weather pattern later in the week.

Early Monday, the Lake County Office of Education reported that all of Lake County’s public schools were closed due to the overnight and early morning snowfall.

Snow continued to fall at times during the day across parts of the county on Monday, but in most lower elevation areas it melted off by the late morning.

However, areas like Cobb continue to be coated in a heavy layer of snow.

The National Weather Service has issued a winter weather advisory for areas of Lake County above the 1,500 foot elevation mark that will be in effect from 10 a.m. Tuesday to 4 a.m. Wednesday.

The forecast said “another low elevation snow producing system is on tap for Tuesday morning into Tuesday night.”

It calls for snow with accumulations of up to 6 inches in those areas.

The National Weather Service’s in-depth forecast explains that “a period of heavier showers will result in one more round of heavy snow for elevations over 1500 feet Tuesday into Tuesday night.”

There will then be a pattern shift to slightly warmer conditions, with moderate to heavy rainfall below 4,000 feet expected late Thursday and Friday.

The Tuesday snow will be the result of a system that is the last in the series of cold storm systems bringing low elevation snow for the foreseeable future, forecaster said.

“It is becoming increasingly likely that the weather pattern in California will shift substantially beginning on Thursday as warmer air moves in from the Pacific,” the National Weather Service reported.

The forecast said snow levels will rise substantially, easily to over 4,000 feet by Friday as a warm front moves through the region. “This front will also spread rain across the region, some of which could be heavy.”

The Lake County forecast expects rain to follow the snow beginning on Thursday and continuing into early next week.

Temperatures are expected to rise slightly during the day from the mid 40s to the low 50s, and at night from the high 20s to the high 30s.

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.