Cape Henlopen to Fenwick Island DE out 20 nm Marine Forecast
| Tonight...W Winds 15 To 20 Kt, Diminishing To 5 To 10 Kt. Seas 4 To 6 Ft, Subsiding To 3 To 4 Ft After Midnight. Wave Detail: E 5 Ft At 11 Seconds And Nw 3 Ft At 5 Seconds, Becoming E 4 Ft At 11 Seconds And Nw 2 Ft At 5 Seconds. |
| Tue...W Winds 5 To 10 Kt, Becoming Sw In The Afternoon. Seas 2 To 4 Ft. Wave Detail: E 3 Ft At 11 Seconds And N 1 Foot At 4 Seconds. |
| Tue Night...Sw Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: E 3 Ft At 11 Seconds And S 1 Foot At 4 Seconds. A Chance Of Rain And Snow In The Evening, Then Rain And Snow Likely After Midnight. Vsby 1 To 3 Nm. |
| Wed...N Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: N 2 Ft At 3 Seconds And Sw 2 Ft At 5 Seconds. Rain And Snow Likely In The Morning With Vsby 1 To 3 Nm. |
| Wed Night...N Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: N 2 Ft At 5 Seconds And E 2 Ft At 10 Seconds. |
| Thu...Nw Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: N 2 Ft At 4 Seconds And E 1 Foot At 10 Seconds. |
| Thu Night...Nw Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas 2 To 3 Ft. |
| Fri...W Winds 5 To 10 Kt, Becoming Sw 10 To 15 Kt In The Afternoon. Seas 2 To 3 Ft. |
| Fri Night...W Winds 15 To 20 Kt, Becoming Nw 25 To 30 Kt After Midnight. Seas 2 To 4 Ft, Building To 4 To 6 Ft After Midnight. |
| Sat...Nw Winds 30 To 35 Kt, Diminishing To 25 To 30 Kt In The Afternoon. Seas 5 To 8 Ft. |
| Sat Night...Nw Winds 25 To 30 Kt, Diminishing To 20 To 25 Kt After Midnight. Seas 5 To 8 Ft, Subsiding To 4 To 6 Ft After Midnight. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 923pm EST Monday Feb 2 2026 .WHAT HAS CHANGED... The Small Craft Advisory from Little Egg Inlet NJ to Fenwick Island DE out to 20 nm has been cancelled. .KEY MESSAGES... 1. Below normal temperatures will continue this week with many areas remaining below freezing. Dangerously cold wind chills return for the weekend. 2. A couple opportunities for light snow to occur across the region this week. The first coming Tuesday night and the second coming on Friday. Removed wording suggesting any snowfall greater than one inch for Tuesday night. KEY MESSAGE 1...Below normal temperatures will continue this week with many areas remaining below freezing. Dangerously cold wind chills return for the weekend. High pressure situated off the coast of the Southeast U.S. Tuesday, with return flow allowing for slightly milder (relatively speaking) temperatures. Regardless, temperatures will remain below normal for the entire week ahead. Highs on Tuesday for the Delaware Valley, including Philadelphia, southern New Jersey, and Delmarva will top off in the mid to upper 30s with perhaps a few highs near 40 in southern Delaware. North of that area, for the southern Poconos, northern New Jersey, and the Lehigh Valley, highs will mostly be in the upper 20s to low 30s with some spots touching the freezing mark depending on the amount of sunshine. Temperatures for the rest of the week will then remain mostly below freezing where highs will generally be in the low 20s to low 30s. Another Arctic front arrives by Friday night and highs over the weekend look to be in the teens and 20s once again. In terms of low temperatures, despite highs mostly in the 30s or so this week, lows will be in the single digits and teens with the exception of Tuesday night. By the weekend, lows will range from the single digits to as low as 5 below zero. Wind chills will once again return to dangerously cold levels over the weekend, where another round of cold weather headlines may be warranted towards the end of the week. KEY MESSAGE 2...Two opportunities for light snow to occur across the region this week. The first is Tuesday night and the second for Friday. Surface high pressure remains over the Southeast coast Tuesday before moving out into the western Atlantic Tuesday night. A broad upper trough digs down into the Southern Plains and into the Gulf Coast states while a closed mid-level low tracks across Ontario and Quebec. Associated strong shortwave energy passes across the Northeast as a weak surface low originating from the Midwest approaches the Middle-Atlantic late Tuesday. These features then pass through the area overnight on Tuesday into Wednesday morning. This system is quite weak in nature and moisture starved, but with strong shortwave energy and sufficient cold air in place, anticipate an area of light snow to overspread the area overnight. In terms of snowfall amounts, expecting a coating to an inch of snow in most places, especially south of I-78. For areas north of I-78, perhaps some flurries but no accumulations expected. Overall, minimal impacts are expected with snow ending by Wednesday morning. The next chance for snow arrives on Friday and possibly into Friday evening. A strong clipper system moves by to the north and an associated Arctic front will cross the region. It's too early for any specifics on this system, but a period of light snow and/or snow squalls are probable. Marine As of 920 PM, the Small Craft Advisory from Little Egg Inlet NJ to Fenwick Island DE out to 20 nm has been cancelled. It remains in effect until 1am Tuesday north of there mainly for elevated seas. No marine headlines on Delaware Bay. Sub-SCA (Small Craft Advisory) conditions expected for Tuesday. Regarding the river ice threat...Ice cover exists across area bay waters and inland estuaries. This includes, but is not limited to the Delaware estuary. On rivers, the ice has grown in thickness enough to cause restrictions in the flow. An example of this can be seen at the Trenton River gauge. Per satellite imagery, the Delaware River is pretty much ice covered from just south of Trenton upstream to about Washington Crossing. The most common ways river ice can break up is either through a thermal or mechanical means. We would like to see temperatures rise into the 40s for a few days, but that's not in the offing through the weekend. Rainfall, producing river rises, can also break up ice. But again, that's not in the forecast either this week. As a result, we expect the ice we're seeing to expand before it contracts. Even though there may be a pause in the growth during the daylight hours this week, temperatures at night will support expansion. Outlook... Tuesday through Friday... No marine headlines expected as winds mainly remain below 20 kt with seas around 2-3 feet. Periods of light snow possible on Tuesday night and Friday, otherwise fair weather. Friday night through Saturday... Gales probable. Cold. Freezing spray expected. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 1am EST Tuesday for ANZ450-451. |
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