Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory until December 7, 03:00 PM PST

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Overcast

45°F

7°C

Humidity	93%
Wind Speed	E 10 MPH
Barometer	30.34 in (1027.43 mb)
Dewpoint	43°F (6°C)
Visibility	9.00 mi
Wind Chill	40°F (4°C)
Last update	07 Dec 10:35 AM PST

More Information:

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

Extended Forecast for

3 Miles NNW Vallejo CA

Coastal Flood Advisory December 7, 10:48am until December 7, 03:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Coastal Flood Advisory December 7, 10:48am until December 7, 03:00pm
NOW until 3:00pm Sun
Coastal Flood Advisory
Today
High: 54 °F
Decreasing
Clouds
Tonight
Low: 42 °F
Mostly Clear
then Patchy
Fog
Monday
High: 58 °F
Patchy Dense
Fog then
Sunny
Monday Night
Low: 43 °F
Partly Cloudy
Tuesday
High: 58 °F
Mostly Sunny
Tuesday Night
Low: 45 °F
Patchy Fog
Wednesday
High: 62 °F
Patchy Fog
then Sunny
Wednesday Night
Low: 45 °F
Patchy Fog

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 54. Light and variable wind.

Tonight

Patchy fog between midnight and 1am. Otherwise, partly cloudy, with a low around 42. East wind 5 to 8 mph becoming calm.

Monday

Patchy dense fog between 9am and 10am. Otherwise, mostly sunny, with a high near 58. Calm wind becoming south southwest around 5 mph in the afternoon.

Monday Night

Partly cloudy, with a low around 43. Light and variable wind becoming east southeast around 6 mph after midnight.

Tuesday

Mostly sunny, with a high near 58. Calm wind.

Tuesday Night

Patchy fog. Otherwise, partly cloudy, with a low around 45.

Wednesday

Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62.

Wednesday Night

Patchy fog. Otherwise, partly cloudy, with a low around 45.

Thursday

Mostly sunny, with a high near 62.