Flash Flood Watches in Southeast and Tennessee Valley; Critical Fire Weather in California; Severe Weather in Upper Midwest

Flash flood watches are in effect today in parts of the Southeast and Tennessee Valley from organized areas of heavy to excessive rainfall. Meanwhile, critical fire weather conditions are likely across northern California with offshore winds and dry conditions. Finally, a strong cold front will produce severe thunderstorms across the Upper to Mid Mississippi Valley.
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Philadelphia, PA Local Forecast Office

28NM NNW Lewes DE

Marine Point Forecast

[NOTICE]
  • Tonight

    Patchy Fog

    ESE 15kt
    1-2ft

    Low: 67 °F

  • Tuesday

    Patchy Fog

    ESE 10kt
    1ft

    High: 76 °F

  • Tuesday
    Night

    Slight Chc Showers

    ESE 10kt
    1-2ft

    Low: 72 °F

  • Wednesday

    Chance Showers

    SSE 15kt
    1-2ft

    High: 78 °F

  • Wednesday
    Night

    Chance Showers

    SSE 15kt
    2ft

    Low: 71 °F

  • Thursday

    Showers Likely

    SSE 15kt
    2ft

    High: 76 °F

  • Thursday
    Night

    Heavy Rain

    SSE 10kt
    1-2ft

    Low: 65 °F

  • Friday

    Chance Showers

    NW 10kt
    1ft

    High: 71 °F

  • Friday
    Night

    Partly Cloudy

    Light Wind
    1ft

    Low: 63 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:09 pm EDT Sep 20, 2021
Forecast Valid: 4pm EDT Sep 20, 2021-6pm EDT Sep 27, 2021

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Detailed Forecast


Synopsis: High pressure will build off shore tonight then remain near the Canadian Maritimes through Tuesday. A cold front is expected to cross the region Thursday into Friday. High pressure may build in to start the weekend.

Tonight
ESE wind 10 to 15 kt. Patchy fog after 4am. Seas 1 to 2 ft.
Tuesday
ESE wind around 10 kt. Patchy fog before 10am. Seas around 1 ft.
Tuesday Night
ESE wind around 10 kt. A slight chance of showers after 2am. Patchy fog after 2am. Seas 1 to 2 ft.
Wednesday
SSE wind 10 to 15 kt. A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Seas 1 to 2 ft.
Wednesday Night
SSE wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 2 ft.
Thursday
SSE wind 10 to 15 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Seas around 2 ft.
Thursday Night
SSE wind around 10 kt becoming SW after midnight. Showers likely before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Seas 1 to 2 ft.
Friday
NW wind around 10 kt. A chance of showers. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Winds and waves higher in and near tstms.

*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: 39.22°N 75.33°W
Last Update: 1:09 pm EDT Sep 20, 2021
Forecast Valid: 4pm EDT Sep 20, 2021-6pm EDT Sep 27, 2021
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