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.

54°F

12°C

Humidity	83%
Wind Speed	SE 2 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	11 Apr 11:52 AM PDT

More Information:

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

Extended Forecast for

16 Miles NE 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

This Afternoon
High: 46 °F
Showers
Tonight
Low: 36 °F
Rain/Snow
then
Rain/Snow
Likely
Sunday
High: 46 °F
Chance
Showers then
Showers
Sunday Night
Low: 38 °F
Showers then
Chance
Showers
Monday
High: 46 °F
Rain/Snow
Likely then
Showers
Likely
Monday Night
Low: 39 °F
Chance
Showers then
Mostly Cloudy
Tuesday
High: 53 °F
Mostly Sunny
Tuesday Night
Low: 39 °F
Chance Rain
Wednesday
High: 43 °F
Rain

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. Snow level 5700 feet. High near 46. South southwest wind around 7 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain and snow showers, mainly before 4am. Snow level 5500 feet lowering to 4200 feet after midnight . Low around 36. Light and variable wind becoming south southwest around 5 mph after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.

Sunday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Snow level 3800 feet rising to 5200 feet in the afternoon. High near 46. South wind around 5 mph becoming light and variable. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

Sunday Night

Showers, mainly before 11pm. Snow level 5200 feet lowering to 4400 feet after midnight . Low around 38. South southwest wind 3 to 5 mph. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

Monday

A chance of rain showers before 8am, then a chance of rain and snow showers between 8am and 11am, then rain showers likely after 11am. Snow level 4200 feet rising to 5100 feet in the afternoon. Mostly cloudy, with a high near 46. South southwest wind around 5 mph becoming calm. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Monday Night

A 40 percent chance of showers before 11pm. Snow level 5300 feet lowering to 4500 feet after midnight . Mostly cloudy, with a low around 39.

Tuesday

Mostly sunny, with a high near 53.

Tuesday Night

A chance of rain. Snow level 5700 feet lowering to 4100 feet after midnight . Mostly cloudy, with a low around 39.

Wednesday

Rain. Snow level 4100 feet rising to 5100 feet in the afternoon. Cloudy, with a high near 43.

Wednesday Night

Rain likely before 8pm, then rain and snow likely between 8pm and 2am, then a slight chance of snow after 2am. Snow level 4900 feet lowering to 3000 feet after midnight . Mostly cloudy, with a low around 30.

Thursday

Sunny, with a high near 47.

Thursday Night

Mostly clear, with a low around 32.

Friday

Sunny, with a high near 59.