Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into 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

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Fog

37°F

3°C

Humidity	93%
Wind Speed	N 0 MPH
Barometer	30.14 in (1020.66 mb)
Dewpoint	36°F (2°C)
Visibility	0.50 mi
Last update	30 Dec 11:35 PM PST

More Information:

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

Extended Forecast for

Saint Helena CA

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

Click here for hazard details and duration

Coastal Flood Advisory

Tonight
Low: 43 °F
Chance Rain
Wednesday
High: 53 °F
Rain Likely
Wednesday Night
Low: 46 °F
Rain and
Patchy Fog
New Year's Day
High: 55 °F
Rain and
Patchy Dense
Fog
Thursday Night
Low: 51 °F
Rain and
Patchy Fog
Friday
High: 56 °F
Rain
Friday Night
Low: 48 °F
Showers
Saturday
High: 54 °F
Rain
Saturday Night
Low: 46 °F
Rain and
Patchy Fog

Detailed Forecast

Tonight

A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 43. Calm wind.

Wednesday

Rain likely, mainly after 10am. Cloudy, with a high near 53. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog after 9pm. Low around 46. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

New Year's Day

Rain. Patchy dense fog before 10am. High near 55. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain. Patchy fog after 1am. Low around 51. South southeast wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. High near 56. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Showers and possibly a thunderstorm before 4am, then rain and possibly a thunderstorm after 4am. Low around 48. Chance of precipitation is 100%.

Saturday

Rain. Cloudy, with a high near 54.

Saturday Night

Rain. Patchy fog after 1am. Otherwise, cloudy, with a low around 46.

Sunday

Rain. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 53.

Sunday Night

Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 44.