Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. 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

61°F

16°C

Humidity	44%
Wind Speed	N 0 MPH
Barometer	30.18 in (1022.01 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	30 Dec 10:15 AM 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

Today
High: 60 °F
Mostly Cloudy
Tonight
Low: 48 °F
Mostly Cloudy
then Chance
Rain
Wednesday
High: 58 °F
Rain
Wednesday Night
Low: 48 °F
Rain and
Patchy Fog
New Year's Day
High: 62 °F
Rain
Thursday Night
Low: 53 °F
Rain
Friday
High: 61 °F
Rain
Friday Night
Low: 48 °F
Rain
Saturday
High: 58 °F
Rain Likely

Detailed Forecast

Today

Mostly cloudy, with a high near 60. East northeast wind 13 to 15 mph.

Tonight

A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 48. East northeast wind 9 to 13 mph.

Wednesday

Rain, mainly after 10am. High near 58. East wind 7 to 16 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain. Patchy fog. Low around 48. East southeast wind 6 to 8 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 62. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night

Rain. Low around 53. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Rain. High near 61. Chance of precipitation is 80%.

Friday Night

Rain. Cloudy, with a low around 48.

Saturday

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

Saturday Night

Rain likely, mainly before 4am. Mostly cloudy, with a low around 46.

Sunday

Rain likely. Mostly cloudy, with a high near 59.