Severe Weather and Flooding in the Ohio Valley and Mid-Atlantic; Winter Storm in Alaska; Heavy Rains in Hawaii

Severe thunderstorms may produce a few tornadoes, scattered damaging winds, isolated severe hail, and flash flooding across the upper Ohio River Valley and parts of the Appalachians tonight. A strong storm in western Alaska continues to produce heavy snow, strong winds, and blizzard conditions into the mainland. Heavy showers and isolated thunderstorms may cause flash flooding in northern Hawaii.
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12NM SW San Francisco CA

Marine Point Forecast

[NOTICE]
  • Overnight

    Mostly Cloudy

    WNW 14kt
    6ft
  • Friday

    Mostly Cloudy

    WNW 14kt
    4-5ft
  • Friday
    Night

    Rain

    S 22kt
    3ft

    Small Craft Advisory
    Small Craft Advisory

  • Saturday

    Showers

    S 21kt
    4-6ft

    Small Craft Advisory
    Small Craft Advisory

  • Saturday
    Night

    Showers Likely

    SSE 12kt
    7-8ft
  • Sunday

    Partly Sunny

    WNW 11kt
    5-6ft
  • Sunday
    Night

    Mostly Clear

    NW 13kt
    5ft
  • Monday

    Mostly Sunny

    NW 13kt
    4-5ft
  • Monday
    Night

    Mostly Clear

    NW 13kt
    4-6ft

Associated Zone Forecast which includes this point

Last Update: 2:12 am PDT Apr 12, 2024
Forecast Valid: 4am PDT Apr 12, 2024-6pm PDT Apr 18, 2024

View Nearby Observations

Detailed Forecast


Overnight
WNW wind around 14 kt. Mostly cloudy. Mixed swell...WNW 3 ft at 13 seconds and SW 1 ft at 15 seconds. Wind waves around 5 ft.
Friday
WNW wind 10 to 14 kt becoming SSW in the afternoon. Mostly cloudy. Mixed swell...WNW 3 ft at 12 seconds and SSW 1 ft at 15 seconds building to at 18 seconds . Wind waves 3 to 4 ft.
Friday Night
S wind 14 to 22 kt, with gusts as high as 28 kt. Rain, mainly after 2am. Patchy fog between 8pm and 11pm. Mixed swell...WNW 3 ft at 11 seconds and SSW 1 ft at 17 seconds. Wind waves 1 to 2 ft.
Saturday
S wind 12 to 21 kt. Showers, with thunderstorms also possible after 11am. Mixed swell...W 5 ft and SSW 2 ft. Wind waves 1 ft building to 4 ft.
Saturday Night
SSE wind 9 to 12 kt becoming NE after midnight. Winds could gust as high as 18 kt. Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mixed swell...W 7 ft and SSW 2 ft. Wind waves 4 ft subsiding to 1 ft.
Sunday
NE wind 7 to 11 kt becoming WNW in the afternoon. Partly sunny. Mixed swell...WNW 4 to 5 ft and SSW 2 ft. Wind waves 1 to 2 ft.
Sunday Night
NW wind around 13 kt. Mostly clear. Mixed swell...WNW 3 ft and SSW 1 to 2 ft. Wind waves 3 to 4 ft.
Monday
NW wind 10 to 13 kt. Mostly sunny. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 3 to 4 ft.
Monday Night
NW wind 11 to 13 kt. Mostly clear. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 4 to 6 ft.

*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: 37.65°N 122.61°W
Last Update: 2:12 am PDT Apr 12, 2024
Forecast Valid: 4am PDT Apr 12, 2024-6pm PDT Apr 18, 2024
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