Delaware Bay south of East Point NJ to Slaughter Beach DE Marine Forecast
| Overnight...S Winds 5 To 10 Kt. Seas 1 Foot Or Less. Wave Detail: S 1 Foot At 3 Seconds. |
| Fri...S Winds 5 To 10 Kt, Becoming Se 10 To 15 Kt With Gusts Up To 20 Kt In The Afternoon. Seas 1 Foot Or Less, Then Around 2 Ft In The Afternoon. Wave Detail: Se 1 Foot At 9 Seconds, Becoming S 1 Foot At 3 Seconds And Se 1 Foot At 10 Seconds. |
| Fri Night...S Winds 10 To 15 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 3 Seconds And Se 1 Foot At 9 Seconds. A Chance Of Showers After Midnight. |
| Sat...Sw Winds 10 To 15 Kt. Seas Around 2 Ft. Wave Detail: S 2 Ft At 5 Seconds And Se 1 Foot At 9 Seconds. Showers Likely In The Morning, Then Showers With A Chance Of Tstms In The Afternoon. |
| Sat Night...Nw Winds 15 To 20 Kt. Seas 2 To 3 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And S 2 Ft At 6 Seconds. Showers With A Chance Of Tstms In The Evening, Then A Chance Of Showers After Midnight. |
| Sun...Nw Winds 15 To 20 Kt. Seas 2 To 3 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And Se 1 Foot At 8 Seconds. |
| Sun Night...Nw Winds 10 To 15 Kt. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less. |
| Mon...Nw Winds Around 10 Kt, Becoming Sw In The Afternoon. Seas 1 Foot Or Less. |
| Mon Night...S Winds Around 10 Kt. Seas 1 Foot Or Less. |
| Tue...S Winds 10 To 15 Kt. Seas 1 Foot Or Less, Then Around 2 Ft In The Afternoon. |
| Tue Night...Sw Winds Around 15 Kt. Seas Around 2 Ft. Winds And Seas Higher In And Near Tstms. |
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Area Forecast Discussion National Weather Service Mount Holly NJ 958pm EDT Thu April 24 2025 Synopsis High pressure will remain over the western Atlantic Ocean. A warm front lifts north the region Friday night, followed by a cold front on Saturday as low pressure lifts north of the region. High pressure will then be in control for the first half of the new week. Another frontal system approaches late next week. Near Term - Through Friday As of 955 PM, the forecast is on track with no significant changes necessary. High pressure will remain well off the coast tonight through Friday. The high will still have enough of an effect on the region to keep the area dry tonight through the daytime hours Friday. With the high being offshore, return flow will be in place across the area, which will keep temperatures above normal with lows in the upper 40s/lower 50s tonight and highs generally in the mid 70s Friday, as well as an increase in moisture through the day. Short Term - Friday Night Through Sunday Low pressure will be over the Great Lakes and Ohio Valley Friday evening. A warm front will extend out from that low and will lift north through the region Friday night. As the low passes north of the region and into eastern Canada on Saturday, it will drag a cold front through the region during the day, and the front will clear the area Saturday evening. Showers will develop Friday night, and then showers continue throughout the day Saturday, tapering off late and ending in the evening. The surface low looks to strengthen somewhat Friday night as it lifts north of Lake Ontario, and this may result in some locally heavy rain across the southern Poconos, northern New Jersey, and the Lehigh Valley. Scattered thunderstorms are possible from time to time, but not looking at a severe threat. Overall, between 3/4 inches and 1 inch of rain is expected for the southern Poconos and far northwest New Jersey, otherwise, between 1/3 and 1/2 inch of rain for most of the area, and 1/4 inch or so for Delmarva. Flash flooding is also not expected. This will be a beneficial rain. Canadian high pressure builds into the Great Lakes and Ohio Valley on Sunday. Sunny, dry and seasonable conditions with a breezy northwest wind. Long Term - Sunday Night Through Thursday High pressure builds east and will be centered over the Mid- Atlantic on Monday, then slides offshore and becomes a Bermuda high through at least Wednesday. Mid-level ridging builds over the East Coast as well. Unseasonably warm air builds into the region with highs in the 70s on Monday, and then in the 80s on Tuesday and Wednesday. A cold front approaches late next week. There is uncertainty among the models as to timing and strength. Based on NBM PoPs, chances for showers arrive sometime Wednesday, but it may not clear until Wednesday night or Thursday. Will carry slight chance-chance Probability of Precipitation during this time. Cooling off for the end of the week. Marine Through Friday...Conditions will remain below Small Craft Advisory levels, although winds will gust around 20 kt Friday afternoon with increasing wave heigheights (3-4 feet). Outlook... Friday night through Saturday...Overall, sub-SCA (Small Craft Advisory) conditions expected, although seas may build close to 5 feet late Saturday. VSBY restrictions in showers and scattered thunderstorms. Saturday night through Sunday...SCA (Small Craft Advisory) conditions possible, mainly for seas building to 5 feet. A period of 25 to 30 kt gusts possible Saturday night and SUnday morning. Monday through Tuesday...Sub-SCA (Small Craft Advisory) conditions. Fire Weather RH values on Thursday dropped into the low to mid 20s, while winds increased and gusted to around 20 mph at times. Friday will see similar wind gusts, however, RH values are not expected to be as low. The lowest RH values are expected across eastern Pennsylvania and inland portions of New Jersey where RH values could drop into the mid to upper 20s. RH values for Delaware, Maryland, as well as coastal portions of New Jersey will likely see RH values in the 35-45% or greater range. Depending on how much fuels have dried in the last couple of days, we may need to issue a Special Weather Statement for portions of New Jersey and Pennsylvania. Rain will impact the area Friday night through Saturday evening. Overall, between 1/3 and 1/2 inch of rain will fall across most of the area, though up to an inch of rain is possible in the southern Poconos and far northwest New Jersey, and 1/4 inch or so is possible in Delmarva. On Sunday, northwest winds will increase to 15 to 20 mph with 30 to 35 mph gusts possible. In addition, Min RH values on Sunday will be 30 to 35 percent. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD... Air Quality Alert until midnight EDT tonight for MDZ012-015. Marine None. |
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