Tracking Atmospheric River for California; Record Temperatures Further East

An atmospheric river will bring gusty to high winds, moderate to heavy rainfall, and potential flooding to California today through Saturday. Heavy snow will be possible over the Sierra Nevada mountains into Friday associated with this atmospheric river. East of these impacts dozens of record high maximum and high minimum temperatures may be broken or tied today and Friday. Read More >

Hazardous Weather Conditions

Flood Advisory until November 13, 03:00 PM PST

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

61°F

16°C

Humidity	96%
Wind Speed	N 2 MPH
Barometer	NA
Dewpoint	60°F (16°C)
Visibility	NA
Last update	13 Nov 01:10 PM PST

More Information:

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

Extended Forecast for

2 Miles N Portola Valley CA

Flood Advisory November 13, 02:08pm until November 13, 03:00pm

Click here for hazard details and duration

Flood Advisory

Flood Advisory November 13, 02:08pm until November 13, 03:00pm
NOW until 3:00pm Thu
Flood Advisory
This Afternoon
High: 67 °F
Rain and
Windy
Tonight
Low: 50 °F
Rain Likely
and Breezy
Friday
High: 67 °F
Chance Rain
Friday Night
Low: 49 °F
Slight Chance
Rain and
Patchy Fog
Saturday
High: 66 °F
Chance Rain
and Patchy
Fog
Saturday Night
Low: 51 °F
Chance Rain
Sunday
High: 65 °F
Chance Rain
Sunday Night
Low: 49 °F
Chance Rain

Detailed Forecast

This Afternoon

Rain. High near 67. Windy, with a south southwest wind 28 to 31 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 50. Breezy, with a south southwest wind 17 to 22 mph becoming light and variable after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Friday

A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 67. Light and variable wind becoming southeast around 5 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 20 percent chance of rain after 10pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 49. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 30 percent chance of rain, mainly after 10am. Patchy fog before 7am. Otherwise, partly sunny, with a high near 66. Light and variable wind. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night

A 40 percent chance of rain. Mostly cloudy, with a low around 51. New precipitation amounts of less than a tenth of an inch possible.

Sunday

A 50 percent chance of rain. Mostly cloudy, with a high near 65.

Sunday Night

A chance of rain. Mostly cloudy, with a low around 49.

Monday

A chance of rain, mainly before 4pm. Partly sunny, with a high near 62.

Monday Night

A slight chance of rain before 10pm. Partly cloudy, with a low around 45.

Tuesday

Mostly sunny, with a high near 65.