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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5NM NNW San Francisco CA

Marine Point Forecast

[NOTICE]
  • Today

    Mostly Cloudy

    SW 29km/h

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Mostly Cloudy

    SW 29km/h

    Small Craft Advisory
    Small Craft Advisory

  • Friday

    Mostly Cloudy

    SW 27km/h
  • Friday
    Night

    Mostly Cloudy

    SW 29km/hWinds Decreasing
  • Saturday

    Mostly Cloudy

    SW 26km/h
  • Saturday
    Night

    Mostly Cloudy

    SW 24km/h
  • Sunday

    Mostly Sunny

    SW 24km/h
  • Sunday
    Night

    Mostly Cloudy

    SW 26km/hWinds Decreasing
  • Monday

    Mostly Sunny

    Winds IncreasingSW 27km/h

Associated Zone Forecast which includes this point

Last Update: 1:33 am PDT Jul 18, 2019
Forecast Valid: 6am PDT Jul 18, 2019-6pm PDT Jul 24, 2019

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Detailed Forecast


Synopsis: PZZ500-182245- 314 AM PDT Thu Jul 18 2019 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Light to moderate northwest winds will continue through Monday except for light south wind along the near shore waters south of the the Wind flow in the near term is from the south from the Golden Gate south. Light long period southerly swell will continue as well. $$

Today
SW wind 23 to 29 km/h, with gusts as high as 40 km/h. Mostly cloudy.
Tonight
SW wind 21 to 29 km/h, with gusts as high as 39 km/h. Mostly cloudy.
Friday
SW wind 21 to 27 km/h, with gusts as high as 39 km/h. Mostly cloudy.
Friday Night
SW wind 24 to 29 km/h decreasing to 16 to 21 km/h in the evening. Winds could gust as high as 37 km/h. Mostly cloudy.
Saturday
SW wind 18 to 26 km/h, with gusts as high as 37 km/h. Mostly cloudy.
Saturday Night
SW wind 14 to 24 km/h, with gusts as high as 37 km/h. Mostly cloudy.
Sunday
SW wind 14 to 24 km/h, with gusts as high as 34 km/h. Mostly sunny.
Sunday Night
SW wind 21 to 26 km/h decreasing to 14 to 19 km/h in the evening. Winds could gust as high as 34 km/h. Mostly cloudy.
Monday
SW wind 14 to 19 km/h increasing to 22 to 27 km/h in the afternoon. Winds could gust as high as 37 km/h. Mostly sunny.

*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: 37.86°N 122.46°W
Last Update: 1:33 am PDT Jul 18, 2019
Forecast Valid: 6am PDT Jul 18, 2019-6pm PDT Jul 24, 2019
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