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.

36°F

2°C

Humidity	97%
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	35°F (2°C)
Visibility	NA
Last update	11 Apr 06:10 AM 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

Today
High: 49 °F
Showers
Likely then
Rain/Snow
Tonight
Low: 25 °F
Rain/Snow
Sunday
High: 43 °F
Snow Showers
Sunday Night
Low: 25 °F
Snow Showers
Likely then
Slight Chance
Snow Showers
Monday
High: 48 °F
Slight Chance
Snow Showers
then Slight
Chance
Rain/Snow
Monday Night
Low: 23 °F
Partly Cloudy
Tuesday
High: 54 °F
Sunny
Tuesday Night
Low: 26 °F
Partly Cloudy
Wednesday
High: 54 °F
Mostly Sunny

Detailed Forecast

Today

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

Tonight

Rain and snow showers before 2am, then a chance of snow showers. Snow level 6500 feet lowering to 5000 feet after midnight . Low around 25. Southwest 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. Some thunder is also possible. High near 43. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Sunday Night

Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 25. Southwest wind 5 to 10 mph becoming light after midnight. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday

A slight chance of snow showers after 11am, mixing with rain after 2pm. Partly sunny, with a high near 48. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

Monday Night

Partly cloudy, with a low around 23. West wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 54.

Tuesday Night

Partly cloudy, with a low around 26.

Wednesday

Mostly sunny, with a high near 54.

Wednesday Night

A slight chance of rain showers before 2am, then a slight chance of rain and snow showers. Snow level 6900 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 26.

Thursday

Sunny, with a high near 55.

Thursday Night

Clear, with a low around 24.

Friday

Sunny, with a high near 63.