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.

51°F

11°C

Humidity	90%
Wind Speed	SW 5 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Last update	11 Apr 12:52 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 April 11, 08:00pm until April 12, 11:00am

Click here for hazard details and duration

Winter Weather Advisory

This Afternoon
High: 43 °F
Rain/Snow
Tonight
Low: 34 °F
Rain/Snow
then
Rain/Snow
Likely
Sunday
High: 43 °F
Chance Snow
Showers then
Rain/Snow
Sunday Night
Low: 36 °F
Rain/Snow
then Chance
Snow Showers
Monday
High: 42 °F
Rain/Snow
Likely
Monday Night
Low: 37 °F
Chance
Showers then
Mostly Cloudy
Tuesday
High: 50 °F
Mostly Sunny
Tuesday Night
Low: 38 °F
Chance
Rain/Snow
Wednesday
High: 41 °F
Rain/Snow
then Rain

Detailed Forecast

This Afternoon

Rain showers before 3pm, then rain, possibly mixed with snow showers between 3pm and 4pm, then rain showers after 4pm. Some thunder is also possible. Snow level 5700 feet. High near 43. South wind 6 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tonight

Rain, possibly mixed with snow showers, becoming all snow after 3am. Snow level 5500 feet lowering to 4600 feet after midnight . Low around 34. Light and variable wind becoming south southeast 5 to 8 mph in the evening. Chance of precipitation is 90%. Little or no snow accumulation expected.

Sunday

Rain, possibly mixed with snow showers, becoming all rain after 5pm. Some thunder is also possible. High near 43. 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 90%. Little or no snow accumulation expected.

Sunday Night

Rain showers before 8pm, then rain and snow showers between 8pm and 11pm, then a chance of snow showers after 11pm. Snow level 5200 feet lowering to 4600 feet after midnight . Low around 36. Southwest wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday

A chance of snow showers before 11am, then rain and snow showers likely between 11am and 2pm, then rain showers likely after 2pm. Mostly cloudy, with a high near 42. Calm wind becoming north northwest around 6 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night

A 30 percent chance of showers before 11pm. Snow level 5400 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 37.

Tuesday

Mostly sunny, with a high near 50.

Tuesday Night

A chance of rain before 11pm, then a chance of rain and snow. Snow level 5700 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 38.

Wednesday

Rain and snow, becoming all rain after 11am. Snow level rising to 5100 feet in the afternoon. Cloudy, with a high near 41.

Wednesday Night

Rain and snow likely before 2am, then a slight chance of snow. Mostly cloudy, with a low around 29.

Thursday

Sunny, with a high near 43.

Thursday Night

Mostly clear, with a low around 30.

Friday

Sunny, with a high near 55.