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.

49°F

9°C

Humidity	100%
Wind Speed	SW 1 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	11 Apr 05:52 AM PDT

More Information:

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

Extended Forecast for

12 Miles W Happy Camp CA

Winter Weather Advisory April 11, 08:00pm until April 12, 11:00am

Click here for hazard details and duration

Winter Weather Advisory

Today
High: 39 °F
Rain/Snow
Tonight
Low: 34 °F
Rain/Snow
then Snow
Likely
Sunday
High: 38 °F
Snow
Sunday Night
Low: 36 °F
Snow Likely
then Chance
Snow
Monday
High: 38 °F
Snow Likely
Monday Night
Low: 35 °F
Chance Snow
then Mostly
Cloudy
Tuesday
High: 43 °F
Partly Sunny
Tuesday Night
Low: 36 °F
Chance Snow
Wednesday
High: 37 °F
Rain/Snow

Detailed Forecast

Today

Rain and snow showers before noon, then rain and snow showers. Some thunder is also possible. Snow level 5800 feet lowering to 5300 feet in the afternoon . High near 39. South wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tonight

Rain and snow, becoming all snow after 8pm. Low around 34. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Sunday

Snow before 11am, then snow showers after 11am. Some thunder is also possible. High near 38. Light and variable wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Sunday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around 36. West wind 6 to 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Monday

Snow likely, mainly before 11am. Mostly cloudy, with a high near 38. West wind 6 to 10 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night

A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 35. Little or no snow accumulation expected.

Tuesday

Partly sunny, with a high near 43.

Tuesday Night

A chance of snow, mainly after 11pm. Mostly cloudy, with a low around 36.

Wednesday

Snow before 8am, then snow, possibly mixed with rain. Mostly cloudy, with a high near 37.

Wednesday Night

A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 30.

Thursday

A slight chance of snow. Sunny, with a high near 45.