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

Half Moon Bay Airport (KHAF)

Lat: 37.5136°NLon: 122.4996°WElev: 65.0ft.

Clear

59°F

15°C

Humidity	38%
Wind Speed	ENE 13 MPH
Barometer	30.07 in (1018.29 mb)
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Last update	30 Dec 09:35 PM PST

More Information:

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

Extended Forecast for

Half Moon Bay 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: 48 °F
Chance Rain
Wednesday
High: 57 °F
Rain
Wednesday Night
Low: 51 °F
Rain
New Year's Day
High: 61 °F
Rain
Thursday Night
Low: 53 °F
Rain
Friday
High: 61 °F
Rain and
Windy
Friday Night
Low: 49 °F
Rain
Saturday
High: 59 °F
Rain
Saturday Night
Low: 47 °F
Rain Likely

Detailed Forecast

Tonight

A 30 percent chance of rain, mainly after 4am. Cloudy, with a low around 48. East northeast wind around 14 mph.

Wednesday

Rain, mainly after 10am. High near 57. East northeast wind 6 to 14 mph becoming south southeast in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night

Rain. Steady temperature around 51. East northeast wind around 9 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

New Year's Day

Rain. High near 61. South wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night

Rain. Low around 53. South wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. High near 61. Windy. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday Night

Rain. Low around 49. Chance of precipitation is 90%.

Saturday

Rain. Mostly cloudy, with a high near 59.

Saturday Night

Rain likely. Cloudy, with a low around 47.

Sunday

Rain likely. Mostly cloudy, with a high near 58.

Sunday Night

Rain likely. Mostly cloudy, with a low around 46.