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.

52°F

11°C

Humidity	88%
Wind Speed	SW 2 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	11 Apr 01:52 PM 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

This Afternoon
High: 56 °F
Showers
Tonight
Low: 39 °F
Showers then
Showers
Likely
Sunday
High: 57 °F
Showers
Likely then
Showers
Sunday Night
Low: 39 °F
Showers
Likely then
Chance
Showers
Monday
High: 57 °F
Showers
Likely
Monday Night
Low: 38 °F
Slight Chance
Showers then
Mostly Cloudy
Tuesday
High: 63 °F
Mostly Sunny
Tuesday Night
Low: 39 °F
Chance Rain
Wednesday
High: 55 °F
Rain

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm. High near 56. West wind around 7 mph becoming north. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers. Snow level 5400 feet lowering to 4200 feet after midnight . Low around 39. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Snow level 3800 feet rising to 5000 feet in the afternoon. High near 57. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 90%.

Sunday Night

Showers likely, mainly before 11pm. Snow level 5100 feet lowering to 4200 feet after midnight . Mostly cloudy, with a low around 39. West northwest wind 3 to 7 mph. Chance of precipitation is 70%.

Monday

Showers likely, mainly after 11am. Snow level 4100 feet rising to 5100 feet in the afternoon. Mostly cloudy, with a high near 57. Light west wind increasing to 5 to 10 mph in the afternoon. Chance of precipitation is 60%.

Monday Night

A 20 percent chance of showers 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 5800 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. Mostly cloudy, with a high near 55.

Wednesday Night

Rain likely, mainly before 11pm. Snow level 5000 feet lowering to 2800 feet after midnight . Mostly cloudy, with a low around 31.

Thursday

Sunny, with a high near 60.