Dangerous Heat and Humidity Building from the Plains to the East Coast

Strengthening high pressure will bring much above normal high and low temperatures. Widespread highs in the 90s to 100 combined with dewpoints surging into the mid and upper 70s will create heat indices as high as 110 through this weekend. In addition, overnight temperatures in the 70s to low 80s will reduce the ability of the body to recover from daytime heating.
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12NM NW San Francisco CA

Marine Point Forecast

[NOTICE]
  • Tonight

    Chance Drizzle

    WNW 8ktWinds Decreasing
    1-2ft
  • Thursday

    Chance Drizzle

    Light Wind
    1-2ft
  • Thursday
    Night

    Chance Drizzle

    Light Wind
    1ft
  • Friday

    Chance Drizzle

    Light Wind
    1ft
  • Friday
    Night

    Mostly Cloudy

    Light Wind
    1ft
  • Saturday

    Mostly Cloudy

    Light Wind
    1ft
  • Saturday
    Night

    Mostly Cloudy

    Light Wind
    1ft
  • Sunday

    Mostly Sunny

    Light Wind
    1ft
  • Sunday
    Night

    Mostly Cloudy

    Light Wind
    1ft

Associated Zone Forecast which includes this point

Last Update: 1:34 pm PDT Jul 17, 2019
Forecast Valid: 5pm PDT Jul 17, 2019-6pm PDT Jul 24, 2019

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Detailed Forecast


Synopsis: PZZ500-181030- 246 PM PDT Wed Jul 17 2019 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Moderate northwest winds across the waters north of Point Reyes through Thursday, with lighter northwest winds elsewhere. Wind driven northwest seas may be locally steep and hazardous to small craft vessels. Light long period southerly swell will continue into Thursday. $$

Tonight
WNW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. A chance of drizzle after 5am. Patchy fog after 4am. Mixed swell...WNW 1 ft at 7 seconds and S 1 to 2 ft at 16 seconds. Wind waves 1 ft or less.
Thursday
Variable winds 5 kt or less. A chance of drizzle before 9am. Patchy fog before 9am. Mixed swell...WNW 1 ft at 7 seconds and S 1 ft at 15 seconds. Wind waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. A chance of drizzle after 4am. Patchy fog after 4am. Mixed swell...WNW 1 ft at 8 seconds and S 1 ft at 15 seconds. Wind waves 1 ft or less.
Friday
Variable winds 5 kt or less. A chance of drizzle before 8am. Patchy fog before 8am. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.
Sunday
Variable winds 5 kt or less. Mostly sunny. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...WNW 1 ft and S 1 ft. Wind waves 1 ft or less.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Southwest swell 3 to 4 ft with a dominant period of 17 seconds. ACROSS THE BAR...Southwest swell 4 to 5 ft with a dominant period of 17 seconds. Maximum ebb current of 1.7 kt at 06:13 PM Wednesday and 2.9 kt at 06:13 AM Thursday.

*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.
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ABOUT THIS FORECAST

Point Forecast: 37.89°N 122.64°W
Last Update: 1:34 pm PDT Jul 17, 2019
Forecast Valid: 5pm PDT Jul 17, 2019-6pm PDT Jul 24, 2019
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