Delaware Bay south of East Point NJ to Slaughter Beach DE Marine Forecast
| Tonight...S Winds 10 To 15 Kt. Seas Around 2 Ft. Wave Detail: S 2 Ft At 3 Seconds And Se 1 Foot At 9 Seconds. |
| Thu...S Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 2 To 3 Ft. Wave Detail: S 2 Ft At 4 Seconds And Se 1 Foot At 9 Seconds. A Chance Of Showers And Tstms. |
| Thu Night...S Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming Sw Around 5 Kt After Midnight. Seas 2 To 3 Ft. Wave Detail: S 2 Ft At 5 Seconds And Se 1 Foot At 9 Seconds. A Chance Of Showers After Midnight. |
| Fri...W Winds Around 5 Kt. Seas 1 To 2 Ft. Wave Detail: Se 2 Ft At 6 Seconds. A Chance Of Showers In The Afternoon. |
| Fri Night...Sw Winds Around 5 Kt, Becoming N After Midnight. Seas 1 To 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds. A Chance Of Showers In The Evening. |
| Sat...Ne Winds 5 To 10 Kt, Becoming E In The Afternoon. Seas Around 2 Ft. Wave Detail: N 1 Foot At 2 Seconds And Se 1 Foot At 7 Seconds. |
| Sat Night...Se Winds 5 To 10 Kt. Seas 1 To 2 Ft. |
| Sun...S Winds Around 5 Kt, Increasing To 5 To 10 Kt In The Afternoon. Seas 1 Foot Or Less, Then 1 To 2 Ft In The Afternoon. |
| Sun Night...S Winds Around 10 Kt. Seas Around 2 Ft. |
| Mon...Sw Winds 5 To 10 Kt. Seas 1 Foot Or Less. |
| Mon Night...Sw Winds 5 To 10 Kt. Seas 1 Foot Or Less. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 404pm EDT Wednesday August 26 2026 .WHAT HAS CHANGED... Severe and flash flood potential has increased for Thursday. Updated the rip currents section. .KEY MESSAGES... 1. A warm front on Thursday will bring the next chance for widespread rain. 2. A cold front is expected to follow close behind on Friday. KEY MESSAGE 1...A warm front tomorrow will bring the next chance for widespread rain. High pressure moves offshore with southerly return flow behind a warm front will bring dew points into the low 70s. Showers and thunderstorms will start moving into western areas before daybreak and continue through the day. CAMS producing some organization to convective activity largely focused on the I-95 urban corridor. As for the hazards, there is a SLIGHT (2 out of 4) risk for excessive rainfall. Precipitable water values increase to perhaps as high as 150% of normal for this time of year. The hires guidance suggests that heaviest precipitation will be generally along the I-95 corridor and points northwest. Generally around 1-2 inches of rain with localized Quantitative Precipitation Forecast values in excess of 3 inches. Widespread flash flooding still seems unlikely, but the localized threat has increased and have issued a flood watch for the urban corridor from ILG-northern NJ For severe hazards, latest CAMS and HREF guidance has come into line with more instability available for storms to work with tomorrow. HREF mean SBCAPE values are around 1500-2500 J/kg with ensemble maximums in excess 3000 J/kg. Deep layer shear forecasts have now increased to around 30kt. Boundary layer flow is not particularly strong but surface winds are more backed than previous forecasts so an isolated tornado is possible primarily along and west of I-95. Dominant mode should be multicell convection but a supercell can't be ruled out especially where cloud bearing shear is maximized. Storm Prediction Center has expanded the area of a slight risk (2 out of 5) to now include much of the area. KEY MESSAGE 2...A cold front will cross the area Friday. The timing of this cold front will be critical in the risk for thunderstorm hazards. There are differences between models in both the timing, and if this will be a single cold front, or an initial cold front with a reinforcing shot of cold air advection coming in behind it. Saturday and Sunday appear to be dry across most of the area with the exception of southern areas Saturday where low probabilities of showers and storms will exist. Marine No marine hazards expected. Light winds and no restrictions to visibility expected Wednesday. Outlook... Thursday And Friday Gusts near 20 kt are possible, particularly on Thursday with southerly winds behind a warm front. Saturday and Sunday...No marine hazards expected. Rip Currents... On Thursday, winds remain southerly at 10 to 15 mph with gusts to 20 to 25 mph. There is an east-southeasterly swell with a period of 8-9 seconds and breaking waves around 2-3 feet. As a result, there is a MODERATE risk for the development of dangerous and life threatening rip currents at the Jersey Shore and a LOW risk at Delaware Beaches. For Friday, winds in the morning are more westerly at 5 to 10 mph before becoming more southwesterly in the afternoon at 5 to 10 mph. An east-southeasterly swell remains with a period of 6-7 seconds with breaking waves around 2-3 feet. As a result, there is a MODERATE risk for the development of dangerous and life threatening rip currents at the Jersey Shore and a LOW risk at Delaware Beaches. For specific beach forecasts, visit weather.gov/beach/phi NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...Flood Watch from Thursday afternoon through late Thursday night for PAZ070-071-101>106. NJ...Flood Watch from Thursday afternoon through late Thursday night for NJZ001-008>010-012-013-015-017>019. DE...Flood Watch from Thursday afternoon through late Thursday night for DEZ001. MD...None. Marine None. |
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