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

7 Miles NE Happy Camp CA

Winter Weather Advisory April 12, 09:43am until April 12, 11:00am

Click here for hazard details and duration

...

Winter Weather Advisory April 12, 09:43am until April 12, 11:00am
NOW until 11:00am Sun
Winter Weather Advisory
Today
High: 57 °F
Chance
Showers then
Showers
Tonight
Low: 38 °F
Rain Likely
then Slight
Chance Rain
Monday
High: 56 °F
Chance Rain
Monday Night
Low: 37 °F
Slight Chance
Rain then
Mostly Cloudy
Tuesday
High: 62 °F
Mostly Sunny
Tuesday Night
Low: 39 °F
Rain Likely
Wednesday
High: 51 °F
Rain
Wednesday Night
Low: 30 °F
Rain Likely

Detailed Forecast

Today

Rain and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. Snow level 4000 feet rising to 5200 feet in the afternoon. High near 57. Light and variable wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain likely, mainly before 7pm. Snow level 4600 feet. Mostly cloudy, with a low around 38. West wind 3 to 7 mph. Chance of precipitation is 60%.

Monday

A 50 percent chance of rain. Snow level 4300 feet rising to 5300 feet in the afternoon. Partly sunny, with a high near 56. Calm wind becoming west 5 to 7 mph in the afternoon.

Monday Night

A 20 percent chance of rain before 11pm. Snow level 5500 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 37. West wind 5 to 8 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 62. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

Tuesday Night

Rain likely, mainly after 11pm. Snow level 5400 feet lowering to 4100 feet. Mostly cloudy, with a low around 39. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

Rain. Snow level 4400 feet rising to 5100 feet. High near 51. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night

Rain likely, mainly before 11pm. Snow level 4700 feet lowering to 2300 feet after midnight . Mostly cloudy, with a low around 30.

Thursday

Sunny, with a high near 56.

Thursday Night

Mostly clear, with a low around 30.

Friday

Sunny, with a high near 66.

Friday Night

Partly cloudy, with a low around 37.

Saturday

Mostly sunny, with a high near 70.