Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Rain

57°F

14°C

Humidity	71%
Wind Speed	N 0 MPH
Barometer	29.67 in (1004.74 mb)
Dewpoint	48°F (9°C)
Visibility	10.00 mi
Last update	24 Dec 11:35 AM PST

More Information:

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

Extended Forecast for

2 Miles SSW Livermore Municipal CA

Flood Watch December 24, 11:50am until December 26, 10:00pm

Wind Advisory December 24, 08:00pm until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 11:50am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Today
High: 58 °F
Severe
Thunderstorms
Tonight
Low: 51 °F
Severe
Thunderstorms
and Breezy
Christmas Day
High: 55 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 47 °F
Severe
Thunderstorms
then Showers
Likely
Friday
High: 54 °F
Showers
Friday Night
Low: 41 °F
Chance
Showers
Saturday
High: 51 °F
Slight Chance
Showers then
Mostly Sunny
Saturday Night
Low: 35 °F
Mostly Clear
then Patchy
Frost and
Patchy Fog

Detailed Forecast

Today

A chance of showers, with thunderstorms also possible after 4pm. Some of the storms could be severe. Mostly cloudy, with a high near 58. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 7pm, then showers between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 51. Breezy, with a south wind 15 to 20 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 55. Breezy, with a south southwest wind 17 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then showers likely after 10pm. Some of the storms could be severe. Low around 47. South southwest wind 15 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 54. South wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 50 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 41. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 20 percent chance of showers before 10am. Partly sunny, with a high near 51.

Saturday Night

Patchy fog after 4am. Patchy frost after 3am. Otherwise, mostly clear, with a low around 35.

Sunday

Patchy fog before 8am. Areas of frost before 8am. Otherwise, sunny, with a high near 51.

Sunday Night

Patchy fog after 5am. Areas of frost after 1am. Otherwise, mostly clear, with a low around 34.

Monday

Patchy fog. Patchy frost. Otherwise, sunny, with a high near 53.

Monday Night

Patchy fog. Areas of frost. Otherwise, mostly clear, with a low around 35.