Great Egg Inlet to Cape May NJ out 20 NM Marine Forecast
| Tonight...Se Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 9 Seconds And E 1 Foot At 3 Seconds. A Slight Chance Of Rain Late. |
| Mon...E Winds 5 To 10 Kt, Becoming Ne In The Afternoon. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 4 Seconds And Se 1 Foot At 9 Seconds. Rain Likely, Mainly In The Morning. |
| Mon Night...Nw Winds 15 To 20 Kt, Increasing To 20 To 25 Kt After Midnight. Seas 3 To 5 Ft. Wave Detail: Nw 4 Ft At 4 Seconds And Se 4 Ft At 9 Seconds. |
| Tue...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 4 Ft At 4 Seconds And Se 3 Ft At 8 Seconds. |
| Tue Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas 2 To 3 Ft. Wave Detail: W 3 Ft At 4 Seconds And Se 2 Ft At 8 Seconds. |
| Wed...Sw Winds 10 To 15 Kt, Increasing To 20 To 25 Kt In The Afternoon. Seas 2 To 4 Ft. Wave Detail: S 4 Ft At 6 Seconds And N 1 Foot At 3 Seconds. |
| Wed Night...Sw Winds 20 To 25 Kt, Becoming W After Midnight. Seas 4 To 6 Ft. |
| Thu...Nw Winds 20 To 25 Kt, Diminishing To 15 To 20 Kt In The Afternoon. Seas 3 To 5 Ft. |
| Thu Night...N Winds 5 To 10 Kt. Seas 2 To 3 Ft. |
| Fri...S Winds 10 To 15 Kt, Increasing To 15 To 20 Kt In The Afternoon. Seas 2 To 3 Ft. |
| Fri Night...Sw Winds 20 To 25 Kt. Seas 4 To 6 Ft. A Chance Of Showers. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 228pm EST Sunday Nov 2 2025 Synopsis High pressure remains in control today before shifting offshore tonight. A weak coastal low will slide by to the south and east on Monday, followed by a weak cold front on Monday night. High pressure returns on Tuesday into Wednesday, before another cold front crosses through the region Wednesday night. High pressure briefly builds in for Thursday and Friday before a stronger low pressure system impacts the region for next weekend. Near Term - Through Monday Surface high pressure over the Northeast slides offshore tonight. Meanwhile, closed H5 low over the Tennessee Valley and northern portions of the Gulf Coast states tracks east and slides off the Southeast coast tonight through Monday. As it does, surface low pressure develops and intensifies off the Southeast coast during this time and lifts north towards the Mid-Atlantic coast during the day Monday. This low should not track too close to the coast, as it will drift northeast away from the coast as another H5 trough passes north of the region. In terms of sensible weather, tranquil conditions this afternoon through tonight. High clouds will increase and thicken during the overnight hours. A light southwest flow this afternoon will become nearly calm tonight. Light warm air advection will result in warmer temperatures tonight compared to Saturday night as lows will be in the upper 30s to low 40s for most of southeast Pennsylvania and most of New Jersey, and in the mid 40s or so along the urban corridor from around Philadelphia to Wilmington and over Delmarva. Lows will be in the upper 40s along the coasts due to the proximity to the relatively warmer ocean waters. Between offshore low pressure tracking near the coast and the H5 trough passing north of the area, skies will be cloudy. Any rain should mostly be confined to Delaware Beaches and the Jersey Shore, but low chance Probability of Precipitation will extend back towards the Garden State Parkway and slight chance Probability of Precipitation back towards the I-95 corridor. Quantitative Precipitation Forecast will be light, generally as much as 1/10" or so along the coasts and trace amounts to maybe a couple of hundredths of an inch inland. Highs on Monday will generally be in the upper 50s to around 60. Short Term - Monday Night Through Wednesday Night Overall, mostly sensible weather is expected for the Monday night through Wednesday night period. A trough axis departs the region Monday night with quasi-zonal flow filling in its place through Wednesday. Another shortwave trough approaches by Wednesday night. At the surface, a weak surface front passes through early Monday evening with broad high pressure building in from the south on Tuesday. This high then slides offshore Tuesday night. A weak low will track across northern New York on Wednesday with a trailing cold front crossing through the Mid-Atlantic region at night. All in all, mostly clear and sunny skies are expected through Tuesday night. Monday night lows will be in the upper 30s to mid 40s with highs on Tuesday in the upper 50s to low 60s. Tuesday night will feature slightly colder temps, with lighter winds causing temps to fall into the mid 30s to low 40s. This could pose a threat for frost development on agriculture where the growing season remains active. Otherwise, a gradual increase in cloud cover is expected on Wednesday, albeit, highs will be ~5 degrees warmer with southerly return flow setting up ahead of a cold front that will cross through Wednesday night. The daytime period will remain dry with a 20-40% chance of showers at night (mainly north of Philadelphia). Long Term - Thursday Through Sunday A continuation of sensible and seasonable weather is expected through Thursday night with broad but expansive high pressure settling over the Great Lakes on Thursday before shifting off the East Coast on Friday. Mainly clear skies with seasonable temperatures are expected...with potential frost/freeze concerns on Thursday night where the growing season remains active. By Friday, the pattern will become more active and progressive as a series of quick-moving systems impact the region for the weekend. High pressure shifts off the coast on Friday as an area of low pressure tracks through southeast Canada early Saturday. Beyond Friday night, guidance diverges significantly as there are notable timing differences amongst features. For this reason, have stuck close to NBM guidance which carries a 40-60% chance of showers across the entire region Friday night into Saturday. Beyond this point, the weather pattern looks to be unsettled, resulting in a chance of showers to be mentioned for Sunday as well. Marine Sub-Small Craft Advisory conditions this afternoon, tonight and Monday. SE winds generally 10 to 15 kt through most of Monday, turning W-NW with gusts up to 20 kt late. Seas generally around 2 feet through Monday. Outlook... Monday night through Tuesday...Small Craft Advisories have been issued for both the Atlantic Coastal Waters and Delaware Bay for wind gusts of 25-30 kt and seas up to 5 feet. Tuesday night...No marine headlines expected. Wednesday through Thursday...SCA (Small Craft Advisory) conditions likely with wind gusts up to 30 kt and seas building up to 6 feet. Thursday night through Friday...SCA (Small Craft Advisory) conditions possible late Friday, but largely no marine headlines expected. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory from 10pm Monday to 3pm EST Tuesday for ANZ430-431. Small Craft Advisory from 7pm Monday to 6pm EST Tuesday for ANZ450>455. |
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