Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Hazardous Weather Conditions

Wind Advisory in effect from November 12, 10:00 PM PST until November 13, 04:00 PM PST

Current conditions at

LOS ALTOS (LOAC1)

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

60°F

16°C

Humidity	94%
Wind Speed	E 4 MPH
Barometer	NA
Dewpoint	58°F (14°C)
Visibility	NA
Last update	13 Nov 04:10 AM PST

More Information:

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

Extended Forecast for

5 Miles WSW Cupertino CA

Wind Advisory until November 13, 04:00pm

Click here for hazard details and duration

Wind Advisory

Wind Advisory until November 13, 04:00pm
NOW until 4:00pm Thu
Wind Advisory
Overnight
Low: 57 °F
Heavy Rain
Thursday
High: 59 °F⇓
Heavy Rain
and Breezy
Thursday Night
Low: 50 °F
Rain Likely
Friday
High: 59 °F
Chance Rain
Friday Night
Low: 52 °F
Slight Chance
Rain
Saturday
High: 59 °F
Chance Rain
Saturday Night
Low: 52 °F
Chance Rain
Sunday
High: 57 °F
Chance Rain

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 57. South southeast wind around 21 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

Showers and possibly a thunderstorm before 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. Temperature falling to around 54 by 4pm. Breezy, with a south wind 16 to 25 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 50. South southwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

A 40 percent chance of rain before 4pm. Partly sunny, with a high near 59. South southeast wind around 6 mph becoming light and variable in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 20 percent chance of rain after 10pm. Partly cloudy, with a low around 52. Calm wind becoming north northeast around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 59. 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 52.

Sunday

A chance of rain. Mostly cloudy, with a high near 57.

Sunday Night

A chance of rain. Mostly cloudy, with a low around 51.

Monday

A chance of rain, mainly before 4pm. Partly sunny, with a high near 54.

Monday Night

A slight chance of rain. Partly cloudy, with a low around 47.

Tuesday

Mostly sunny, with a high near 57.