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	95%
Wind Speed	SW 3 MPH
Barometer	NA
Dewpoint	51°F (11°C)
Visibility	NA
Last update	10 Apr 08:52 PM PDT

More Information:

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

Extended Forecast for

13 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

Tonight
Low: 39 °F
Rain Likely
then Chance
Rain/Snow
Saturday
High: 39 °F⇓
Rain/Snow
Saturday Night
Low: 36 °F
Snow then
Snow Likely
Sunday
High: 35 °F
Snow Showers
Sunday Night
Low: 34 °F
Snow Likely
then Chance
Snow
Monday
High: 37 °F
Snow Likely
then
Rain/Snow
Likely
Monday Night
Low: 33 °F
Chance
Rain/Snow
then Mostly
Cloudy
Tuesday
High: 43 °F
Slight Chance
Rain
Tuesday Night
Low: 35 °F
Chance
Rain/Snow
then Chance
Snow

Detailed Forecast

Tonight

Rain likely before midnight, then a chance of rain and snow. Snow level 6600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a steady temperature around 39. South wind around 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Saturday

Rain and snow showers, becoming all snow after 1pm. Some thunder is also possible. Temperature falling to around 34 by 5pm. South wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Saturday Night

Snow. Steady temperature around 36. West southwest wind 8 to 10 mph becoming northeast in the evening. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Sunday

Snow likely before 11am, then snow showers after 11am. Some thunder is also possible. High near 35. West southwest wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Sunday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around 34. West wind 9 to 13 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Monday

Snow likely before 5pm, then snow likely, possibly mixed with rain. Mostly cloudy, with a high near 37. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Monday Night

A chance of rain and snow before 8pm, then a chance of snow between 8pm and 11pm. Mostly cloudy, with a low around 33. Chance of precipitation is 30%. Little or no snow accumulation expected.

Tuesday

A slight chance of rain after 5pm. Partly sunny, with a high near 43.

Tuesday Night

A slight chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 35.

Wednesday

Snow likely before 2pm, then snow likely, possibly mixed with rain. Mostly cloudy, with a high near 37.

Wednesday Night

A chance of rain and snow. Mostly cloudy, with a low around 27.

Thursday

Sunny, with a high near 41.

Thursday Night

Mostly clear, with a low around 30.