Cape May NJ to Cape Henlopen DE out 20 nm Marine Forecast
| Tonight...W Winds 15 To 20 Kt, Increasing To 20 To 25 Kt After Midnight. Seas 3 To 5 Ft. Wave Detail: S 3 Ft At 7 Seconds. |
| Thu...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: Se 5 Ft At 10 Seconds And S 2 Ft At 7 Seconds. |
| Thu Night...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 4 Ft. Wave Detail: Se 4 Ft At 10 Seconds And S 1 Foot At 7 Seconds. |
| Fri...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 10 Seconds. |
| Fri Night...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: Se 2 Ft At 9 Seconds And N 1 Foot At 3 Seconds. |
| Sat...N Winds 10 To 15 Kt, Becoming W 5 To 10 Kt In The Afternoon. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 9 Seconds And Ne 1 Foot At 3 Seconds. |
| Sat Night...Sw Winds 10 To 15 Kt, Increasing To 15 To 20 Kt After Midnight. Gusts Up To 30 Kt. Seas 2 To 3 Ft, Building To 3 To 5 Ft After Midnight. A Chance Of Rain. |
| Sun...W Winds 20 To 25 Kt. Seas 4 To 5 Ft. A Chance Of Rain In The Morning. |
| Sun Night...Nw Winds 25 To 30 Kt. Seas 4 To 5 Ft. |
| Mon...Nw Winds 25 To 30 Kt. Seas 3 To 5 Ft. |
| Mon Night...Nw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt After Midnight. Seas 2 To 4 Ft. |
| Area Forecast Discussion National Weather Service Mount Holly NJ Issued by National Weather Service Baltimore MD/Washington DC 243pm EST Wednesday Nov 12 2025 Synopsis A weak cold front crosses the region this evening. High pressure redevelops over the Tennessee and Ohio Valleys and Southeast to close out the week as a trough lies over the Northeast. High pressure passes through on Saturday, followed by a clipper system Saturday night through Sunday. High pressure returns on Monday, and then another system may track near the area Tuesday or Wednesday. Near Term - Through Tonight Broad troughing encompasses much of the east coast. High pressure is centered well to the south while a clipper low is tracking north of the Great Lakes. The cyclonic flow is producing enough lift for some weak radar returns, though it doesn't appear much is making it to the ground (Mount Pocono did report some flurries). Clouds have been attempting to break up across the southern half of the area, but wind trajectories suggest at least scattered to broken clouds will be around into this evening. Stronger radar returns upstream may slide to the area early this evening as the associated cold front pushes through. Most guidance shows little to no measurable precipitation. The greatest chance of some sprinkles or flurries will be in the Poconos. Overnight lows will be in the 30s to around 40. Short Term - Thursday Through Saturday Surface high pressure will be over the Tennessee and Ohio Valleys and into the Gulf Coast states on Thursday while surface and mid level troughing lies over the Northeast. Gusty northwest winds redevelop with daytime mixing (25-30 mph gusts, perhaps locally higher). Shortwaves should produce cloudiness over at least northern portions of the forecast area, and some flurries or sprinkles cannot be ruled out for the southern Poconos and far northwest New Jersey. Daytime highs will be seasonable (lower to mid 50s with 40s in the higher elevations). Winds diminish after sunset with loss of diurnal heating. Lows Thursday night will be in the 30s. Surface high pressure will begin building in from the west Friday before moving to the Mid Atlantic coast Friday night. While the upper level pattern begins to translate eastward, one final shortwave trough will rotate across the area Friday. This could increase cloud cover and perhaps bring a little light precipitation, especially across the northern half of the area. With a decreasing pressure gradient, winds will be lighter, but there still may be some gusts around 20 mph. Daytime highs remain consistent near climatology. The surface high will promote light winds Friday night, and skies should be clear enough to allow radiational cooling. Thus more areas should end up near to below freezing. A developing warm front will split the surface high to centers near the Gulf Coast and over Quebec. The warm front stays to the southwest Saturday, so temperatures should remain near seasonable values. No precipitation is expected. However, moisture advection aloft will lead to increasing cloud cover. Long Term - Saturday Night Through Wednesday Clipper system passes north of the area Saturday night, lifting the warm front northward. The center of this low will be far enough north that southerly flow ahead of the system results in temperatures warm enough for precipitation to be plain rain, but cannot rule out some wet snowflakes in the higher elevations of the southern Poconos and far northwest New Jersey. There could be some elevated instability, so a few embedded lightning strikes can't be ruled out. Rain tapers off on Sunday as the cold front pushes through. However, we should reside in the warm sector long enough (combined with postfrontal downsloping in gust westerly flow) for highs to reach the low to mid 60s in southeast Pennsylvania and New Jersey, and in the mid and upper 60s in Delmarva. Behind the cold front Sunday night, temperatures tumble back to near and just below normal on Monday. Highs top off in the upper 40s to low 50s. Strong west to northwest winds develop, generally 15 to 20 mph with 25 to 30 mph gusts, as the pressure gradient tightens between departing low pressure and high pressure building into the upper Midwest and Great Lakes. Forecast uncertainty increases Tuesday and Wednesday as a shortwave trough undercuts an amplified ridge in the central US. This system could eventually bring some precipitation, although it will be dependent on its eventual track and timing. Marine SCA (Small Craft Advisory) flags for all marine zones thru Thursday with westerly gusts 25-30 kts. Seas largely 3 to 5 feet with a few 6 foot seas further offshore. Fair weather is expected. Outlook... Thursday night...Winds diminishing and seas subsiding, although advisories may need to be extended for portions of the waters. Friday through Friday night...Generally sub-SCA (Small Craft Advisory) conditions, but there may be occasional gusts up to 25 kt during the day. Saturday through Saturday night...Sub-SCA (Small Craft Advisory) conditions during the day. Increasing SW winds may lead to near-advisory conditions late Saturday night. Sunday through Monday...SCA (Small Craft Advisory) conditions possible. W winds 15 to 20 kt with 25 to 30 kt gusts. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 6pm EST Thursday for ANZ430-431- 450>455. |
Dover DE Radar
Northeast Radar