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

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
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45NM NW San Francisco CA

Marine Point Forecast

[NOTICE]
  • Tonight

    Mostly Cloudy

    NW 40km/h
    2m

    Small Craft Advisory
    Small Craft Advisory

  • Thursday

    Patchy Fog

    NW 27km/hWinds Decreasing
    1-2m

    Small Craft Advisory
    Small Craft Advisory

  • Thursday
    Night

    Patchy Fog

    SSE 14km/h
    1m
  • Friday

    Patchy Fog

    S 14km/h
    1m
  • Friday
    Night

    Mostly Cloudy

    WSW 8km/hWinds Decreasing
    1m
  • Saturday

    Mostly Cloudy

    SSW 11km/h
    1m
  • Saturday
    Night

    Patchy Fog

    WNW 11km/hWinds Decreasing
    1m
  • Sunday

    Patchy Fog

    Winds IncreasingSW 10km/h
    1m
  • Sunday
    Night

    Partly Cloudy

    W 11km/h
    1m

Associated Zone Forecast which includes this point

Last Update: 1:34 pm PDT Jul 17, 2019
Forecast Valid: 8pm 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
NW wind 34 to 40 km/h, with gusts as high as 50 km/h. Mostly cloudy. . Wind waves 1 to 2 m.
Thursday
NW wind 17 to 27 km/h becoming SW 5 to 10 km/h in the morning. Winds could gust as high as 35 km/h. Patchy fog between 8am and 11am. . Wind waves 1 to 2 m.
Thursday Night
WSW wind 8 to 14 km/h becoming SSE in the evening. Patchy fog after 5am. . Wind waves around 1 m.
Friday
SE wind 8 to 14 km/h becoming SW in the afternoon. Patchy fog before 8am. . Wind waves around 1 m.
Friday Night
WSW wind 5 to 8 km/h becoming variable and less than 5 km/h after midnight. Mostly cloudy. . Wind waves around 1 m.
Saturday
S wind 5 to 11 km/h becoming WSW in the afternoon. Mostly cloudy. . Wind waves around 1 m.
Saturday Night
WNW wind 6 to 11 km/h becoming variable and less than 5 km/h after midnight. Patchy fog after 5am. . Wind waves around 1 m.
Sunday
Variable winds less than 5 km/h becoming SW 5 to 10 km/h in the afternoon. Patchy fog before 8am. . Wind waves around 1 m.
Sunday Night
W wind 5 to 11 km/h. Partly cloudy. . Wind waves around 1 m.

*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: 38.3°N 123.07°W
Last Update: 1:34 pm PDT Jul 17, 2019
Forecast Valid: 8pm PDT Jul 17, 2019-6pm PDT Jul 24, 2019
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