Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Hazardous Weather Conditions

Air Stagnation Advisory until December 31, 04:00 PM PST

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

36°F

2°C

Humidity	98%
Wind Speed	NW 0 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Last update	30 Dec 12:52 PM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

17 Miles WNW Illinois Valley OR

Air Stagnation Advisory December 30, 01:01pm until December 31, 04:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory December 30, 01:01pm until December 31, 04:00pm
NOW until 4:00pm Wed
Air Stagnation Advisory
This Afternoon
High: 50 °F
Sunny
Tonight
Low: 43 °F
Increasing
Clouds
Wednesday
High: 50 °F
Partly Sunny
then Slight
Chance Rain
Wednesday Night
Low: 41 °F
Rain Likely
New Year's Day
High: 46 °F
Rain
Thursday Night
Low: 43 °F
Rain
Friday
High: 45 °F
Rain/Snow
Friday Night
Low: 36 °F
Rain/Snow and
Breezy

Detailed Forecast

This Afternoon

Sunny, with a high near 50. South southwest wind around 5 mph becoming calm.

Tonight

Increasing clouds, with a low around 43. South wind 9 to 11 mph.

Wednesday

A 10 percent chance of rain after 4pm. Snow level 5400 feet rising to 6400 feet in the afternoon. Partly sunny, with a high near 50. South southwest wind 5 to 10 mph.

Wednesday Night

Rain likely, mainly after 10pm. Snow level 6600 feet rising to 7900 feet after midnight. Mostly cloudy, with a low around 41. South wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

New Year's Day

Rain. High near 46. East wind around 9 mph becoming south southeast in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Thursday Night

Rain. Snow level 7200 feet. Low around 43. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday

Rain before 10am, then rain, possibly mixed with snow between 10am and 1pm, then rain after 1pm. Snow level 6600 feet lowering to 6100 feet in the afternoon . High near 45. Chance of precipitation is 90%. Little or no snow accumulation expected.

Friday Night

Rain before 7pm, then rain, possibly mixed with snow. The rain could be heavy at times. Snow level 5300 feet lowering to 4700 feet after midnight . Cloudy, with a low around 36. Breezy.

Saturday

Rain, possibly mixed with snow. Cloudy, with a high near 39. Breezy.

Saturday Night

Rain and snow, becoming all snow after 10pm. Mostly cloudy, with a low around 36.

Sunday

Snow. Mostly cloudy, with a high near 39.

Sunday Night

Snow likely. Snow level 4400 feet. Mostly cloudy, with a low around 35.

Monday

Rain and snow likely. Snow level 4500 feet. Mostly cloudy, with a high near 41.