Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Hazardous Weather Conditions

Coastal Flood Advisory in effect from December 31, 05:00 AM PST until January 4, 02:00 PM PST

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity	62%
Wind Speed	WSW 3 MPH
Barometer	30.34 in (1027.43 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	29 Dec 10:15 AM PST

More Information:

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

Extended Forecast for

Sonoma CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm

Click here for hazard details and duration

Coastal Flood Advisory

Today
High: 57 °F
Sunny
Tonight
Low: 35 °F
Mostly Clear
then Patchy
Frost
Tuesday
High: 54 °F
Areas Frost
and Areas Fog
then Partly
Sunny
Tuesday Night
Low: 42 °F
Mostly Cloudy
Wednesday
High: 50 °F
Chance Rain
then Rain
Likely
Wednesday Night
Low: 45 °F
Rain and
Patchy Fog
New Year's Day
High: 53 °F
Rain and
Patchy Fog
Thursday Night
Low: 46 °F
Rain and
Patchy Fog
Friday
High: 54 °F
Rain Likely
and Patchy
Fog

Detailed Forecast

Today

Sunny, with a high near 57. Northeast wind around 6 mph becoming calm.

Tonight

Patchy frost after 3am. Otherwise, mostly clear, with a low around 35. Light and variable wind.

Tuesday

Areas of fog before 10am. Areas of frost before 9am. Otherwise, mostly sunny, with a high near 54. Calm wind becoming east 5 to 8 mph in the morning.

Tuesday Night

Mostly cloudy, with a low around 42. North northeast wind around 6 mph becoming calm in the evening.

Wednesday

Rain likely, mainly after 4pm. Mostly cloudy, with a high near 50. North northwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog before 1am. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. Patchy fog between 7am and 10am. High near 53. Chance of precipitation is 80%.

Thursday Night

Rain. Patchy fog. Otherwise, cloudy, with a low around 46.

Friday

Rain likely. Patchy fog before 10am. Otherwise, cloudy, with a high near 54.

Friday Night

Rain likely. Patchy fog after 1am. Otherwise, cloudy, with a low around 47.

Saturday

Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 52.