Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

For More Weather Information:

Philadelphia, PA Local Forecast Office

33NM NNW Lewes DE

Marine Point Forecast

[NOTICE]
    • Late Afternoon

      Late Afternoon:SW wind around 10 kt. Showers and thunderstorms. Some of the storms could be severe.   Waves 1 ft or less.

      High: 89 °F

      SW 10kt
      < 1ft

    • Tonight

      Tonight:SSW wind around 10 kt. Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Some of the storms could be severe.   Waves 1 ft or less.

      Low: 72 °F

      SSW 10kt
      < 1ft

    • Wednesday

      Wednesday:SW wind around 10 kt becoming W in the afternoon. A chance of showers and thunderstorms, mainly after 4pm.   Waves 1 ft or less.

      High: 87 °F

      WSW 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms before 2am, then a chance of showers after 3am.   Waves 1 ft or less.

      Low: 66 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

      High: 81 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Clear. Waves 1 ft or less.

      Low: 63 °F

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

      High: 81 °F

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Low: 64 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

      High: 81 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:08 pm EDT Jul 21, 2026
Forecast Valid: 5pm EDT Jul 21, 2026-6pm EDT Jul 28, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Late Afternoon
SW wind around 10 kt. Showers and thunderstorms. Some of the storms could be severe. Waves 1 ft or less.
Tonight
SSW wind around 10 kt. Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Some of the storms could be severe. Waves 1 ft or less.
Wednesday
SW wind around 10 kt becoming W in the afternoon. A chance of showers and thunderstorms, mainly after 4pm. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms before 2am, then a chance of showers after 3am. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Clear. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Saturday
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

*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: 39.24°N 75.52°W
Last Update: 4:08 pm EDT Jul 21, 2026
Forecast Valid: 5pm EDT Jul 21, 2026-6pm EDT Jul 28, 2026
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