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

12 Miles NNE 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: 40 °F⇓
Rain/Snow
Saturday Night
Low: 35 °F
Rain/Snow
then Snow
Likely
Sunday
High: 37 °F
Snow
Sunday Night
Low: 36 °F
Snow then
Chance Snow
Monday
High: 40 °F
Snow Likely
Monday Night
Low: 34 °F
Chance
Rain/Snow
then Mostly
Cloudy
Tuesday
High: 45 °F
Partly Sunny
Tuesday Night
Low: 36 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Rain likely before 4am, then a chance of rain and snow between 4am and 5am, then a chance of rain after 5am. Snow level 6600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a low around 39. South southwest wind around 10 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Saturday

Rain and snow showers before 3pm, then rain, possibly mixed with snow showers. Some thunder is also possible. Snow level 5600 feet. Temperature falling to around 37 by 5pm. South wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Saturday Night

Rain, possibly mixed with snow, becoming all snow after 8pm. Low around 35. West southwest wind 8 to 10 mph becoming north northeast in the evening. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Sunday

Snow before 11am, then snow showers after 11am. Some thunder is also possible. High near 37. Southwest wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Sunday Night

Snow, mainly before 11pm. Low around 36. West wind 9 to 13 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday

Snow likely before 5pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night

A chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 34. Chance of precipitation is 40%. Little or no snow accumulation expected.

Tuesday

Partly sunny, with a high near 45.

Tuesday Night

A chance of rain before 8pm, then a chance of rain and snow. Mostly cloudy, with a low around 36.

Wednesday

Rain and snow likely. Mostly cloudy, with a high near 38.

Wednesday Night

A chance of rain and snow. Mostly cloudy, with a low around 29.

Thursday

Sunny, with a high near 45.

Thursday Night

Mostly clear, with a low around 31.