Cape May NJ to Cape Henlopen DE out 20 nm Marine Forecast
| This Afternoon...Sw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: S 5 Ft At 6 Seconds. |
| Tonight...Sw Winds 15 To 20 Kt, Becoming W 10 To 15 Kt After Midnight. Seas 3 To 5 Ft. Wave Detail: S 4 Ft At 6 Seconds And W 1 Foot At 3 Seconds. |
| Sun...Nw Winds Around 10 Kt, Becoming Ne In The Afternoon. Seas 2 To 4 Ft. Wave Detail: S 3 Ft At 7 Seconds And Nw 1 Foot At 3 Seconds. |
| Sun Night...Se Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: S 2 Ft At 6 Seconds And Nw 1 Foot At 3 Seconds. |
| Mon...Se Winds 10 To 15 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 5 Seconds And Se 1 Foot At 9 Seconds. |
| Mon Night...S Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: S 4 Ft At 5 Seconds And Se 1 Foot At 8 Seconds. |
| Tue...Sw Winds 10 To 15 Kt. Seas 3 To 4 Ft. |
| Tue Night...Sw Winds Around 10 Kt, Becoming Nw After Midnight. Seas 2 To 3 Ft. |
| Wed...N Winds 5 To 10 Kt, Becoming E In The Afternoon. Seas Around 2 Ft. |
| Wed Night...S Winds 5 To 10 Kt. Seas Around 2 Ft. |
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Area Forecast Discussion National Weather Service Mount Holly NJ 1058am EDT Sat April 19 2025 Synopsis Bermuda high pressure will meander off the Mid-Atlantic and Southeast coasts through the middle of next week. Low pressure passing north of the region tonight will drag a cold front through the region. High pressure then builds in from the north and west Sunday and departs later Monday. Another cold front passes through the region Monday night. High pressure will be in control through the middle of the week. A low pressure may arrive towards the end of the upcoming week. Near Term - Through Tonight Minor changes with the morning update. A wealth of high clouds around this morning have created a pause in the upward temperature trend for the period. We have adjusted the trends accordingly. Small changes to pops/weather grids and winds too. Southwest winds 10 to 15 mph with gusts to 25 mph will develop shortly. Temperatures will still reach 80 to 85 degrees in many areas later today. The only exceptions are close to the shore and far N/W areas. The aforementioned low pressure system drags a cold front through the area later today leading to some isolated showers and potentially a thunderstorm mainly during the evening and overnight. This would be mainly for the Poconos, the Lehigh Valley, and parts of NW New Jersey. The Storm Prediction Center has updated the Day1 outlook to include a marginal risk (isolated) of severe weather for our NW counties. Short Term - Sunday Through Monday Night High pressure over the Great Lakes Sunday morning will pass through eastern Canada and northern New York Sunday night and will be off the Northeast coast on Monday. An H5 trough over the area departs on Sunday, and shortwave energy passing through the region will keep skies partly to mostly cloudy. A cooler airmass will spread into the region, with high temperatures in the mid and upper 60s to low 70s. These highs will be some 10 to 15 degrees cooler than today. Partly to mostly cloudy and cooler Sunday night with lows in the 40s to around 50. Highs on Monday will be seasonable, topping off in the low to mid 60s. Low pressure passes from the Great Lakes and into eastern Canada Monday night and drags a cold front into the region. models are currently indicating that the front is drying up with its passage, and Probability of Precipitation will be capped at chance (mainly 30 to 40 percent) for now with minimal Quantitative Precipitation Forecast. Lows mainly in the 50s. Long Term - Tuesday Through Friday Some lingering showers are possible Tuesday morning as the cold front moves offshore. High pressure then establishes itself over the area for the mid-week period with above normal temperatures. Highs will be in the mid to upper 70s during this period. High pressure breaks down by the end of the week and another area of low pressure may take a run at the area by Friday. Will follow NBM Probability of Precipitation and carry slight chance PoPs, then PoPs look to increase going into next weekend. Marine A Small Craft Advisory is in effect for all Atlantic coastal zones through 2am Sunday and for the Delaware Bay through 6pm on Saturday. Southwest winds with gusts up to 30 kt and seas around 5 to 7 feet are expected. Cold water concerns for water activities... Given high confidence in land temperatures well above average and the dangerously cold ocean water temperatures in the upper 40s to lower 50s, those participating in water activities should be aware of the dangers of hypothermia. Those planning to be on the water should dress for the water temperature and not the air temperature, especially given the much warmer conditions further inland. Hypothermia occurs when the body's core temperature falls to 95 degrees Fahrenheit or colder, which can lead to exhaustion, unconsciousness, or worse. In particular, those on kayaks and paddleboards are especially at risk. Outlook... Although several weak cold fronts will pass through the waters from Sunday through Wednesday, most notably Monday night through Tuesday morning, conditions look to remain below SCA (Small Craft Advisory) criteria during this period. Fire Weather Today, Min RH values will be around 40-45% with southwest winds around 15-20 mph and gusts up to 30 mph. On Sunday, Min RH values will be 25-30% with northwest winds 10-15 mph with gusts up to 20 mph. Considering these meteorological conditions, the risk for fire spread is low through the weekend. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 6pm EDT this evening for ANZ430- 431. Small Craft Advisory until 2am EDT Sunday for ANZ450>455. |
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