Dangerous Heat Building in the West; Severe Storms in the Upper Midwest

A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
Read More...

19NM W San Francisco CA

Marine Point Forecast

[NOTICE]
  • Overnight

    Partly Cloudy

    W 10kt
    5ft
  • Friday

    Mostly Sunny

    Winds IncreasingNW 12kt
    5ft
  • Friday
    Night

    Mostly Clear

    NW 14kt
    3-4ft
  • Saturday

    Mostly Sunny

    Winds IncreasingWNW 10kt
    3ft
  • Saturday
    Night

    Mostly Cloudy

    NW 11kt
    3ft
  • Sunday

    Partly Sunny

    NW 15kt
    2ft
  • Sunday
    Night

    Partly Cloudy

    NW 16kt
    4ft
  • Monday

    Partly Sunny

    NW 13kt
    4-5ft
  • Monday
    Night

    Partly Cloudy

    NW 15kt
    5-6ft

Associated Zone Forecast which includes this point

Last Update: 5:54 pm PDT Aug 13, 2020
Forecast Valid: 11pm PDT Aug 13, 2020-6pm PDT Aug 20, 2020

View Nearby Observations

Detailed Forecast


Synopsis: PZZ500-141615- 814 PM PDT Thu Aug 13 2020 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Remnant tropical moisture will bring a chance of thunderstorms to the southern waters into this evening. Locally gusty winds, rough seas, and frequent lightning with some of these cells will be possible. Otherwise, generally light to moderate northwest winds across the waters through the weekend aside from locally breezy winds over the northern outer waters into this evening. Mixed seas will persist through the period with a short period northwest swell and two longer period southerly swells. $$

Overnight
W wind 7 to 10 kt. Partly cloudy. Mixed swell...WNW 4 ft at 9 seconds and S 2 ft at 12 seconds. Wind waves around 1 ft.
Friday
Variable winds less than 5 kt becoming NW 7 to 12 kt in the afternoon. Mostly sunny. Mixed swell...NW 4 ft at 8 seconds and S 2 ft at 12 seconds building to at 17 seconds . Wind waves around 1 ft.
Friday Night
NW wind 5 to 14 kt becoming W after midnight. Mostly clear. Mixed swell...NW 3 to 4 ft at 8 seconds and SW 1 ft at 17 seconds. Wind waves 1 to 2 ft.
Saturday
Variable winds less than 5 kt becoming WNW 5 to 10 kt in the morning. Mostly sunny. Mixed swell...WNW 3 ft and SW 1 ft. Wind waves around 1 ft.
Saturday Night
NW wind 8 to 11 kt. Mostly cloudy. Mixed swell...WNW 3 ft and S 1 ft. Wind waves around 1 ft.
Sunday
NW wind 10 to 15 kt. Partly sunny. Mixed swell...WNW 2 ft and SW 1 ft. Wind waves around 1 ft.
Sunday Night
NW wind 12 to 16 kt. Partly cloudy. Mixed swell...WNW 4 ft and S 1 ft becoming SW. Wind waves 1 to 2 ft.
Monday
NW wind 11 to 13 kt. Partly sunny. Mixed swell...WNW 4 ft and SW 2 ft. Wind waves 1 to 2 ft.
Monday Night
NW wind around 15 kt. Partly cloudy. Mixed swell...WNW 5 ft and SW 2 ft. Wind waves around 2 ft.

Winds and wind waves higher in and near thunderstorms. .....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Seas 4 to 6 ft with dominant swell period of 10 seconds. ACROSS THE BAR...Seas 5 to 7 ft with dominate swell period of 10 seconds. Maximum ebb current of 2.2 kt at 12:49 AM Friday and 1.0 kt at 02:01 PM Friday.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
  Select Another Point

ABOUT THIS FORECAST

Point Forecast: 37.8°N 122.82°W
Last Update: 5:54 pm PDT Aug 13, 2020
Forecast Valid: 11pm PDT Aug 13, 2020-6pm PDT Aug 20, 2020
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data