Delaware Bay north of East Point NJ to Slaughter Beach DE Marine Forecast
| Today...Sw Winds 15 To 20 Kt, Becoming W 10 To 15 Kt With Gusts Up To 20 Kt Late This Morning And Afternoon. Seas 2 To 3 Ft. Wave Detail: Sw 2 Ft At 3 Seconds And Se 2 Ft At 8 Seconds. A Slight Chance Of Showers Early This Morning. A Slight Chance Of Showers And Tstms Early This Afternoon, Then A Chance Of Showers And Tstms Late. |
| Tonight...Nw Winds 5 To 10 Kt, Becoming N 10 To 15 Kt After Midnight. Seas Around 2 Ft. Wave Detail: W 1 Foot At 2 Seconds And Se 1 Foot At 8 Seconds. A Chance Of Showers And Tstms In The Evening. |
| Thu...N Winds 10 To 15 Kt, Diminishing To Around 5 Kt In The Afternoon. Seas Around 2 Ft. Wave Detail: N 1 Foot At 2 Seconds And Se 1 Foot At 7 Seconds. |
| Thu Night...Se Winds 5 To 10 Kt, Becoming E After Midnight. Seas 1 Foot Or Less. Wave Detail: Se 1 Foot At 7 Seconds. |
| Fri...E Winds 5 To 10 Kt. Seas 1 Foot Or Less. Wave Detail: E 1 Foot At 2 Seconds And Se 1 Foot At 6 Seconds. |
| Fri Night...E Winds 5 To 10 Kt. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. Wave Detail: E 1 Foot At 3 Seconds And Se 1 Foot At 6 Seconds. |
| Sat...Ne Winds 5 To 10 Kt, Becoming E In The Afternoon. Seas 1 Foot Or Less. |
| Sat Night...Se Winds 5 To 10 Kt, Becoming Ne After Midnight. Seas 1 Foot Or Less. |
| Sun...Ne Winds Around 5 Kt, Becoming Se In The Afternoon. Seas 1 Foot Or Less. |
| Sun Night...S Winds 5 To 10 Kt, Becoming Sw After Midnight. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 637am EDT Wednesday July 22 2026 .WHAT HAS CHANGED... The Small Craft Advisory for Delaware Bay has expired. .KEY MESSAGES... 1) Isolated severe thunderstorms possible this afternoon, mainly south and east of the urban I-95 corridor. A localized flash flood risk today for mainly portions of Delmarva. It then turns much drier and pleasant for the end of the week. KEY MESSAGE 1...Isolated severe thunderstorms possible this afternoon, mainly south and east of the urban I-95 corridor. A localized flash flood risk today for mainly portions of Delmarva. It then turns much drier and pleasant for the end of the week. A strong upper-level trough will remain across the Northeast and Mid- Atlantic regions today into Thursday. Some additional shortwave energy will continue to slide across our area today as a result. A cold front associated with the aforementioned upper-level trough will gradually arrive later today. The deep moisture continues to shift eastward today given the eastward progression of the upper- level trough. While a surface trough has shifted offshore overall, the main cold front will arrive by later today. The forecast challenge is how much convection redevelops ahead of the cold front through this afternoon. The majority of the guidance is limited with convective redevelopment through today with the arrival of the cold front. The combination of greater instability and shear looks to reside near Delmarva and especially on southward where the severe thunderstorm risk looks a bit higher. For our area, an isolated severe thunderstorm risk is present mostly focused south and east of the I-95 urban corridor this afternoon. If a few storms can become strong enough, then conditions look favorable for locally strong to damaging outflow driven winds. There will be drier air gradually working in from the west and northwest through today, which will result in the dew points gradually lowering from north to south through this afternoon. Despite the deeper plume of moisture shifting eastward today resulting in the precipitable water values decreasing with time, it will still be very near Delmarva. Therefore, some local flash flooding risk for that area if some deeper convection occurs and moves over areas that just recently had heavy rainfall. This risk looks even lower if convective coverage ends up remaining less. Once the front moves away later today into tonight, it turns much drier and pleasant for the end of the week and right into the weekend. Marine The Small Craft Advisory for Delaware Bay expired at 6 AM. Southwesterly flow will gust to advisory criteria (25 knots) at times this morning, otherwise the winds are expected to diminish some through the day. Seas remain elevated on the ocean zones, where a Small Craft Advisory continues through this evening. Outlook... Thursday through Sunday...The conditions are anticipated to be below Small Craft Advisory criteria. Rip Currents... For today, southwesterly winds 10-20 mph however breaking waves in the surf zone will be as high as 5 feet. Still a 7 second period which will mitigate the rip current threat some, however will continue with a MODERATE risk for the development of dangerous rip currents at all beaches. For Thursday, winds out of the north and northeast 10-20 mph. Breaking waves are expected to be 2-4 feet with a 7 second period. With the onshore component of the wind and multiple swell groups expected, will maintain a MODERATE risk for the development of dangerous rip currents at all beaches. For specific beach forecasts, visit weather.gov/beach/phi NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 2am EDT Thursday for ANZ450>455. |
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