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 >

Hazardous Weather Conditions

Small Craft Advisory in effect from July 21, 12:00 PM EDT until July 22, 12:00 AM EDT

For More Weather Information:

Philadelphia, PA Local Forecast Office

35NM S Philadelphia PA

Marine Point Forecast

[NOTICE]

This Afternoon
High: 87 °F
SSW 10kt
< 1ft
Tonight
Low: 72 °F
SSW 15kt
< 1ft
Wednesday
High: 86 °F
WSW 10kt
< 1ft
Wednesday Night
Low: 66 °F
Light Wind
< 1ft
Thursday
High: 81 °F
N 10kt
< 1ft
Thursday Night
Low: 61 °F
Light Wind
< 1ft
Friday
High: 83 °F
Light Wind
< 1ft
Friday Night
Low: 63 °F
Light Wind
< 1ft
Saturday
High: 82 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:47 am EDT Jul 21, 2026
Forecast Valid: 1pm EDT Jul 21, 2026-6pm EDT Jul 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH

This Afternoon

SSW wind around 10 kt. Showers and thunderstorms likely, mainly after 4pm. Waves 1 ft or less.

Tonight

SSW wind 10 to 15 kt, with gusts as high as 20 kt. Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Some of the storms could be severe and produce heavy rainfall. Waves 1 ft or less.

Wednesday

WSW wind around 10 kt. A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm. Waves 1 ft or less.

Thursday

N wind 5 to 10 kt. Sunny. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Mostly 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. A chance of showers. Waves 1 ft or less.

*Notices:

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.
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.