Severe Thunderstorms and Flash Flooding Risks - Saturday, July 18th

Scattered to numerous severe thunderstorms are likely across the region on Saturday, July 18th, including a risk of flash flooding for portions of the area. View this briefing for the details regarding these hazards. Read More >

Hazardous Weather Conditions

Special Marine Warning in effect from July 18, 04:02 PM EDT until July 18, 06:00 PM EDT
Small Craft Advisory in effect from July 18, 12:00 PM EDT until July 19, 04:00 AM EDT
Tornado Watch in effect from July 18, 01:55 PM EDT until July 18, 09:00 PM EDT

For More Weather Information:

Philadelphia, PA Local Forecast Office

40NM S New York NY

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 79 °F
S 15kt
3ft

Small Craft Advisory
Tonight
Low: 73 °F
SSW 15kt
3-4ft

Small Craft Advisory
Sunday
High: 80 °F
NW 10kt
2ft
Sunday Night
Low: 70 °F
Light Wind
2-3ft
Monday
High: 78 °F
Light Wind
2ft
Monday Night
Low: 72 °F
S 10kt
2ft
Tuesday
High: 80 °F
SSE 15kt
2-3ft
Tuesday Night
Low: 73 °F
SSW 15kt
4-5ft
Wednesday
High: 83 °F
SW 15kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:08 pm EDT Jul 18, 2026
Forecast Valid: 5pm EDT Jul 18, 2026-6pm EDT Jul 25, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

S wind around 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Some of the storms could be severe. Patchy smoke. Seas around 3 ft.

Tonight

SSW wind 10 to 15 kt becoming WSW after midnight. Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers after 2am. Some of the storms could be severe. Seas 3 to 4 ft.

Sunday

NW wind 5 to 10 kt becoming N in the afternoon. Partly sunny, then gradually becoming sunny. Seas around 2 ft.

Sunday Night

Variable winds 5 kt or less. Mostly clear. Seas 2 to 3 ft.

Monday

Variable winds 5 kt or less. Sunny. Seas around 2 ft.

Monday Night

S wind 5 to 10 kt. Partly cloudy. Seas around 2 ft.

Tuesday

SSE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Seas 2 to 3 ft.

Tuesday Night

SSW wind around 15 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm. Seas 4 to 5 ft.

Wednesday

SW wind around 15 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after 2pm. Seas around 5 ft.

*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.