National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong Storm for the West and Southwest; Heavy Snow for the Northern Plains and Upper Midwest

A strong storm will move ashore across California today accompanied by strong winds, heavy rain and heavy snow for the higher terrain. Flooding will be of great concern for Southern California into portions of Arizona through Wednesday. Several feet of snow is expected across central and southern California Mountains into the central Great Basin. Snow will impact the northern Plains into tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Half Moon Bay Airport (KHAF)

Lat: 37.5136°NLon: 122.4996°WElev: 65ft.

unknown precip,mist

10°C

50°F

Humidity 93%
Wind Speed S 36 MPH
Barometer 29.01 in (982.39 mb)
Dewpoint 9°C (48°F)
Visibility 3.22 km
Wind Chill5°C (41°F)
Last update 21 Mar 03:15 PM PDT
Extended Forecast for

4 Miles E Half Moon Bay CA

Flood Advisory until March 21, 09:00pm
High Wind Warning until March 21, 09:00pm
Click here for hazard details and duration
...
...
  •  
    Flood Advisory until March 21, 09:00pm
    High Wind Warning until March 21, 09:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Tonight

    Tonight: Showers. Low around 6. Breezy, with a south southwest wind 30 to 40 km/h decreasing to 16 to 26 km/h after midnight. Winds could gust as high as 60 km/h. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 cm possible.

    Showers and
    Breezy

    Low: 6 °C

  • Wednesday

    Wednesday: A 50 percent chance of rain, mainly before 11am. Partly sunny, with a high near 11. East northeast wind 13 to 21 km/h becoming northwest in the afternoon. Winds could gust as high as 29 km/h. New precipitation amounts of less than 1 mm possible.

    Chance Rain
    then Slight
    Chance Rain

    High: 11 °C

  • Wednesday
    Night

    Wednesday Night: Mostly cloudy, with a low around 6. West northwest wind 21 to 23 km/h, with gusts as high as 32 km/h.

    Mostly Cloudy

    Low: 6 °C

  • Thursday

    Thursday: Partly sunny, with a high near 11. West northwest wind around 24 km/h, with gusts as high as 37 km/h.

    Partly Sunny

    High: 11 °C

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 4. Northwest wind 23 to 26 km/h, with gusts as high as 35 km/h.

    Partly Cloudy

    Low: 4 °C

  • Friday

    Friday: Mostly sunny, with a high near 10.

    Mostly Sunny

    High: 10 °C

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 4.

    Mostly Clear

    Low: 4 °C

  • Saturday

    Saturday: Sunny, with a high near 10.

    Sunny

    High: 10 °C

Detailed Forecast

Tonight
Showers. Low around 6. Breezy, with a south southwest wind 30 to 40 km/h decreasing to 16 to 26 km/h after midnight. Winds could gust as high as 60 km/h. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 cm possible.
Wednesday
A 50 percent chance of rain, mainly before 11am. Partly sunny, with a high near 11. East northeast wind 13 to 21 km/h becoming northwest in the afternoon. Winds could gust as high as 29 km/h. New precipitation amounts of less than 1 mm possible.
Wednesday Night
Mostly cloudy, with a low around 6. West northwest wind 21 to 23 km/h, with gusts as high as 32 km/h.
Thursday
Partly sunny, with a high near 11. West northwest wind around 24 km/h, with gusts as high as 37 km/h.
Thursday Night
Partly cloudy, with a low around 4. Northwest wind 23 to 26 km/h, with gusts as high as 35 km/h.
Friday
Mostly sunny, with a high near 10.
Friday Night
Mostly clear, with a low around 4.
Saturday
Sunny, with a high near 10.
Saturday Night
Mostly clear, with a low around 4. Breezy.
Sunday
Sunny, with a high near 11.
Sunday Night
Partly cloudy, with a low around 4.
Monday
A chance of rain. Partly sunny, with a high near 11.
Monday Night
A chance of rain. Mostly cloudy, with a low around 6.
Tuesday
A chance of rain. Partly sunny, with a high near 12.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
4 Miles E Half Moon Bay CA
 37.46°N 122.36°W (Elev. 349 m)
Last Update:
4:01 pm PDT Mar 21, 2023
Forecast Valid:
6pm PDT Mar 21, 2023-6pm PDT Mar 28, 2023
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation