Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from April 11, 08:00 PM PDT until April 12, 11:00 AM PDT

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

43°F

6°C

Humidity	100%
Wind Speed	SSW 1 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Last update	11 Apr 11:52 PM PDT

More Information:

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

Extended Forecast for

17 Miles NE Happy Camp CA

Winter Weather Advisory until April 12, 11:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until April 12, 11:00am
NOW until 11:00am Sun
Winter Weather Advisory
Overnight
Low: 34 °F
Chance
Rain/Snow
Sunday
High: 44 °F
Chance
Rain/Snow
then
Rain/Snow
Sunday Night
Low: 36 °F
Rain/Snow
Likely then
Chance Snow
Monday
High: 43 °F
Chance
Rain/Snow
Monday Night
Low: 37 °F
Chance Rain
then Mostly
Cloudy
Tuesday
High: 49 °F
Partly Sunny
Tuesday Night
Low: 39 °F
Rain/Snow
Likely then
Snow
Wednesday
High: 41 °F
Rain/Snow and
Breezy

Detailed Forecast

Overnight

A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 34. South southeast wind 5 to 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

Sunday

Rain likely, possibly mixed with snow showers before 3pm, then rain showers. Some thunder is also possible. High near 44. South southeast wind 5 to 7 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Sunday Night

Rain and snow likely before 11pm, then a chance of snow. Snow level 4700 feet. Mostly cloudy, with a low around 36. Southwest wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday

A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Snow level rising to 5300 feet in the afternoon. Mostly cloudy, with a high near 43. Calm wind becoming north northwest around 6 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Monday Night

A 30 percent chance of rain before 11pm. Snow level 5600 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 37. Light and variable wind becoming northwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

Tuesday

Partly sunny, with a high near 49.

Tuesday Night

A chance of rain before 8pm, then a chance of rain and snow between 8pm and 11pm, then snow after 11pm. Low around 39. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday

Snow before 8am, then rain, possibly mixed with snow. Snow level rising to 5100 feet. Cloudy, with a high near 41. Breezy.

Wednesday Night

Rain and snow likely before 11pm, then a slight chance of snow. Mostly cloudy, with a low around 28.

Thursday

Sunny, with a high near 42.

Thursday Night

Mostly clear, with a low around 30.

Friday

Sunny, with a high near 53.

Friday Night

Partly cloudy, with a low around 37.