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	NE 0 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	11 Apr 12:52 AM PDT

More Information:

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

Extended Forecast for

9 Miles ENE 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

Overnight
Low: 44 °F
Chance Rain
Saturday
High: 56 °F
Showers
Saturday Night
Low: 39 °F
Rain then
Chance Rain
Sunday
High: 56 °F
Showers
Sunday Night
Low: 39 °F
Rain Likely
then Slight
Chance Rain
Monday
High: 58 °F
Chance Rain
Monday Night
Low: 38 °F
Slight Chance
Rain then
Mostly Cloudy
Tuesday
High: 63 °F
Mostly Sunny
Tuesday Night
Low: 39 °F
Chance Rain

Detailed Forecast

Overnight

A 30 percent chance of rain, mainly before 5am. Mostly cloudy, with a low around 44. Light and variable wind.

Saturday

Rain before 11am, then showers and possibly a thunderstorm between 11am and 5pm, then rain and possibly a thunderstorm after 5pm. High near 56. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Rain, mainly before midnight. Snow level 5300 feet lowering to 4300 feet after midnight . Low around 39. East wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Sunday

Rain likely, then showers and possibly a thunderstorm after 11am. Snow level 4000 feet rising to 4900 feet in the afternoon. High near 56. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Rain likely, mainly before 11pm. Snow level 5100 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 39. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Monday

A 50 percent chance of rain. Snow level 3900 feet rising to 5000 feet in the afternoon. Partly sunny, with a high near 58.

Monday Night

A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 38.

Tuesday

Mostly sunny, with a high near 63.

Tuesday Night

A chance of rain, mainly after 11pm. Snow level 5600 feet lowering to 4100 feet after midnight . Mostly cloudy, with a low around 39.

Wednesday

Rain likely. Snow level 4100 feet rising to 4900 feet in the afternoon. Mostly cloudy, with a high near 56.

Wednesday Night

A chance of rain. Snow level 4900 feet lowering to 2900 feet after midnight . Mostly cloudy, with a low around 34.