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 until April 12, 11:00 AM PDT

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10386°NLon: 123.68519°WElev: 1389.0ft.

42°F

6°C

Humidity	100%
Wind Speed	N 3 MPH
Barometer	NA
Dewpoint	42°F (6°C)
Visibility	NA
Last update	12 Apr 08:52 AM PDT

More Information:

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

Extended Forecast for

11 Miles NNE Happy Camp CA

Winter Weather Advisory April 12, 09:08am until April 12, 11:00am

Click here for hazard details and duration

...

Winter Weather Advisory April 12, 09:08am until April 12, 11:00am
NOW until 11:00am Sun
Winter Weather Advisory
Today
High: 43 °F
Chance
Rain/Snow
then
Rain/Snow
Tonight
Low: 35 °F
Rain/Snow
Likely then
Chance
Rain/Snow
Monday
High: 42 °F
Rain/Snow
Likely
Monday Night
Low: 35 °F
Chance Rain
then Mostly
Cloudy
Tuesday
High: 47 °F
Partly Sunny
Tuesday Night
Low: 36 °F
Rain/Snow
Likely then
Snow Likely
Wednesday
High: 38 °F
Rain/Snow
Wednesday Night
Low: 26 °F
Rain/Snow
Likely then
Slight Chance
Snow

Detailed Forecast

Today

Rain and snow showers. Some thunder is also possible. Snow level rising to 5300 feet in the afternoon. High near 43. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tonight

Rain and snow likely, mainly before 2am. Snow level 4600 feet. Mostly cloudy, with a low around 35. West southwest wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday

Rain and snow likely, becoming all rain after 2pm. Snow level rising to 5400 feet in the afternoon. Mostly cloudy, with a high near 42. Southwest wind 3 to 5 mph. Winds could gust as high as 22 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night

A 30 percent chance of rain before 11pm. Snow level 5600 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 35. West wind 5 to 8 mph, with gusts as high as 21 mph.

Tuesday

Partly sunny, with a high near 47. West southwest wind 6 to 14 mph, with gusts as high as 23 mph.

Tuesday Night

A chance of rain before 8pm, then a chance of rain and snow between 8pm and 11pm, then snow likely after 11pm. Snow level 5400 feet lowering to 4400 feet. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.

Wednesday

Rain, possibly mixed with snow. Snow level 4400 feet rising to 5100 feet. High near 38. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday Night

Rain and snow likely before 11pm, then a slight chance of snow. Mostly cloudy, with a low around 26.

Thursday

Sunny, with a high near 42.

Thursday Night

Mostly clear, with a low around 28.

Friday

Sunny, with a high near 53.

Friday Night

Partly cloudy, with a low around 35.

Saturday

Mostly sunny, with a high near 56.