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, 02:00 PM PDT until April 12, 11:00 PM PDT

Current conditions at

POR31-Iron Horse (LIB09)

Lat: 39.77898°NLon: 120.50284°WElev: 5001.0ft.

40°F

4°C

Humidity	94%
Wind Speed	NW 0 MPH
Barometer	NA
Dewpoint	39°F (4°C)
Visibility	NA
Last update	10 Apr 09:20 PM PDT

More Information:

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

Extended Forecast for

2 Miles SSW Portola CA

Winter Weather Advisory April 11, 02:00pm until April 12, 11:00pm

Click here for hazard details and duration

Winter Weather Advisory

Tonight
Low: 32 °F
Showers
Likely
Saturday
High: 49 °F
Showers
Likely then
Rain/Snow
Saturday Night
Low: 25 °F
Rain/Snow
Sunday
High: 43 °F
Snow Showers
then
Rain/Snow
Sunday Night
Low: 26 °F
Rain/Snow
Likely then
Slight Chance
Snow Showers
Monday
High: 48 °F
Chance
Rain/Snow
Monday Night
Low: 24 °F
Partly Cloudy
Tuesday
High: 54 °F
Sunny
Tuesday Night
Low: 28 °F
Partly Cloudy

Detailed Forecast

Tonight

A chance of showers, then showers likely and possibly a thunderstorm after 2am. Snow level 6500 feet. Mostly cloudy, with a low around 32. West wind around 5 mph becoming south after midnight. Chance of precipitation is 70%.

Saturday

Rain showers before 5pm, then rain and snow showers. Some thunder is also possible. Snow level 6500 feet. High near 49. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Saturday Night

Rain and snow showers, becoming all snow after 2am. Snow level 6500 feet lowering to 5000 feet after midnight . Low around 25. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Sunday

Snow showers before 2pm, then snow showers, possibly mixed with rain. Some thunder is also possible. High near 43. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Sunday Night

Rain and snow showers likely, becoming all snow after 8pm. Mostly cloudy, with a low around 26. Southwest wind 5 to 10 mph becoming light in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Monday

A slight chance of snow showers before 11am, then a chance of rain and snow showers between 11am and 2pm, then a chance of rain showers after 2pm. Partly sunny, with a high near 48. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.

Monday Night

Partly cloudy, with a low around 24.

Tuesday

Sunny, with a high near 54.

Tuesday Night

Partly cloudy, with a low around 28.

Wednesday

Mostly sunny, with a high near 56.

Wednesday Night

A slight chance of rain and snow showers. Snow level 7100 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 29.

Thursday

Mostly sunny, with a high near 54.