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.

49°F

9°C

Humidity	100%
Wind Speed	NE 0 MPH
Barometer	NA
Dewpoint	49°F (9°C)
Visibility	NA
Last update	11 Apr 12:52 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 11, 08:00pm until April 12, 11:00am

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 39 °F
Chance Rain
Saturday
High: 41 °F
Rain/Snow
Saturday Night
Low: 34 °F
Rain/Snow
then
Rain/Snow
Likely
Sunday
High: 41 °F
Rain/Snow
Sunday Night
Low: 36 °F
Rain/Snow
then Chance
Rain/Snow
Monday
High: 42 °F
Rain/Snow
Likely
Monday Night
Low: 35 °F
Chance Rain
then Mostly
Cloudy
Tuesday
High: 48 °F
Partly Sunny
Tuesday Night
Low: 35 °F
Chance
Rain/Snow

Detailed Forecast

Overnight

A 50 percent chance of rain, mainly before 5am. Snow level 6100 feet. Mostly cloudy, with a low around 39. South wind around 10 mph.

Saturday

A chance of rain and snow showers before 9am, then rain, possibly mixed with snow showers between 9am and 5pm, then rain after 5pm. Some thunder is also possible. Snow level 5700 feet. High near 41. South wind 6 to 10 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Saturday Night

Rain and snow before 4am, then a chance of snow. Snow level 5300 feet lowering to 4400 feet after midnight . Low around 34. East wind 5 to 9 mph becoming light east northeast. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Sunday

Snow before 11am, then rain and snow showers between 11am and 2pm, then rain showers after 2pm. Some thunder is also possible. Snow level rising to 5000 feet in the afternoon. High near 41. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

Sunday Night

Rain, possibly mixed with snow before 2am, then a chance of snow. Snow level 5200 feet lowering to 4400 feet after midnight . Low around 36. West wind 6 to 10 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Monday

Snow likely before 11am, then rain and snow likely between 11am and 2pm, then rain likely after 2pm. Snow level rising to 5000 feet in the afternoon. Mostly cloudy, with a high near 42. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night

A 30 percent chance of rain before 11pm. Snow level 5200 feet lowering to 4600 feet after midnight . Mostly cloudy, with a low around 35.

Tuesday

Partly sunny, with a high near 48.

Tuesday Night

A chance of rain before 8pm, then a chance of rain and snow. Snow level 5500 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 35.

Wednesday

Rain and snow, becoming all rain after 2pm. Snow level rising to 4800 feet in the afternoon. Mostly cloudy, with a high near 40.

Wednesday Night

Rain and snow likely. Mostly cloudy, with a low around 29.

Thursday

A slight chance of snow. Sunny, with a high near 45.

Thursday Night

Mostly clear, with a low around 29.

Friday

Sunny, with a high near 55.