Little Egg Inlet to Great Egg Inlet NJ out 20 NM Marine Forecast
| Tonight...Se Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming S 15 To 20 Kt With Gusts Up To 25 Kt Late. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 5 Seconds And Se 2 Ft At 8 Seconds. |
| Sun...Sw Winds 15 To 20 Kt, Becoming Nw 20 To 25 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: Se 4 Ft At 7 Seconds And Nw 3 Ft At 3 Seconds. Showers. |
| Sun Night...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming W 5 To 10 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: N 2 Ft At 3 Seconds And S 2 Ft At 6 Seconds. |
| Mon...Nw Winds Around 10 Kt. Seas 2 To 3 Ft. Wave Detail: W 2 Ft At 3 Seconds And E 2 Ft At 7 Seconds. |
| Mon Night...Nw Winds 10 To 15 Kt, Becoming N 15 To 20 Kt After Midnight. Seas 2 To 3 Ft. Wave Detail: N 3 Ft At 4 Seconds And E 2 Ft At 7 Seconds. |
| Tue...N Winds 10 To 15 Kt, Becoming Se 5 To 10 Kt In The Afternoon. Seas 2 To 3 Ft. Wave Detail: N 3 Ft At 4 Seconds And E 1 Foot At 7 Seconds. |
| Tue Night...S Winds 10 To 15 Kt, Increasing To 15 To 20 Kt After Midnight. Seas 2 To 4 Ft. |
| Wed...Sw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt In The Afternoon. Seas 2 To 4 Ft. A Chance Of Showers. |
| Wed Night...W Winds 5 To 10 Kt, Becoming N After Midnight. Seas 2 To 3 Ft. |
| Thu...N Winds 5 To 10 Kt, Becoming Se In The Afternoon. Seas Around 2 Ft. |
| Thu Night...Sw Winds 5 To 10 Kt, Becoming W After Midnight. Seas 2 To 3 Ft. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 210pm EDT Sat April 18 2026 .WHAT HAS CHANGED... Freeze Watch issued for much of our NJ and PA zones for Monday night. .KEY MESSAGES... 1. A strong cold front will bring rain showers to the area tonight into Sunday. 2. Widespread minor tidal flooding along the Atlantic coasts of New Jersey and Delaware, Delaware Bay, and the tidal Delaware River with tonight's high tide. 3. Much colder air early next week with frost/freeze conditions, followed by a return to above average temperatures later in the week. KEY MESSAGE 1...A strong cold front will bring rain showers to the area tonight into Sunday. A cold front will move into the area late tonight and should move off the coast by mid day Sunday. This front, combined with the surface low sliding along the front, will provide enough lift for widespread rain across the area. Chances for measurable rain range from 70 to 90 percent. That being said, this is unlikely to result in substantial rain amounts. Storm (shower) motions should be relatively fast, and the front itself has trended faster. Thus, rain amounts are forecast to be a few hundredths of an inch up to one half an inch. In terms of other hazards, instability, especially surface or low level based instability is forecast to be very limited (less than 50 J/kg of CAPE). Thus the risk for other thunderstorm hazards is very low. That being said, there is some very elevated instability (for parcels above 850 mb), especially west of the fall line, so can't rule out a rumble of thunder or gusty winds. Though this is a strong cold front, the temperature difference won't feel as dramatic as it could, thanks to a marine layer staying mostly in place over our region today. None the less, for most inland areas, temperatures on Sunday will be 5 to 20 degrees colder as compared to Saturday. KEY MESSAGE 2...Widespread minor tidal flooding along the Atlantic coasts of New Jersey and Delaware, Delaware Bay, and the tidal Delaware River with tonight's high tide. A Coastal Flood Advisory remains in effect for the Atlantic coasts of New Jersey and Delaware, as well as along Delaware Bay and up the tidal Delaware River for the high tide cycles tonight. High astronomical tides associated with the New Moon that occurred yesterday and onshore flow today and tonight is forecast to result in widespread minor tidal flooding with tonight's high tide along the Atlantic coasts of New Jersey and Delaware, Delaware Bay, and the tidal Delaware River. A northeast to east wind will become southeasterly by later today into this evening, with surge values increasing to near 1 foot above normal. This will put most tidal areas into minor flood stage during high tide tonight. A modest offshore wind will develop in the wake of a cold front on Sunday, which should limit the risk of any additional flooding for Sunday night's high tide. No tidal flooding is forecast for our portion of the Eastern Shore of Chesapeake Bay. KEY MESSAGE 3...Much colder air early next week with frost/freeze conditions, followed by a return to above average temperatures later in the week. A cold mid-level trough, surface high pressure, clear skies, and light winds all look likely Monday night. As a result, we are expecting efficient radiational cooling conditions and a widespread freeze event early Tuesday morning. Frost early Tuesday morning might be somewhat limited given a much drier low-level air mass is expected to be in place. But outside of the larger cities and away from the immediate coast, temperatures are expected to drop below freezing. In some cases, well below freezing. All of our counties now have an active growing season due to the recent excessive warmth. Blooms/vegetation have quickly initiated and in some cases are ahead of schedule. With this mind, a Freeze Watch has been issued for Monday night/early Tuesday morning. High temperatures both Monday and Tuesday are forecast to be in the 40s and 50s across the region, which is several degrees below average. A return, southerly, flow will become established Tuesday and continue into Wednesday. This along with an increase in warm air advection and rising heigheights will result in temperatures climbing back above average Wednesday through Friday. A warm front may arrive at the end of the week. As of now, rainfall Monday through Friday of next week looks to be on the lighter side, maybe a 0.10 to 0.50 for the week. Marine Through Tonight Winds and seas should stay below Small Craft Advisory criteria. Sunday...Winds will shift to northwesterly and increase quickly behind a cold front Sunday Morning. Expect SCA (Small Craft Advisory) conditions on all waters through the day time. There is a 40% chance that wind speeds exceed gale criteria for a brief period behind the front, particularly at the mouth of the Delaware Bay. However, for now, widespread SCA (Small Craft Advisory) looks more likely, so have issued an SCA (Small Craft Advisory) for the coastal waters out to 20 nmi. For the outer marine areas (20 to 60 nmi), winds are likely to stay below gale criteria. Outlook... Sunday night through Thursday...Sub-SCA (Small Craft Advisory) conditions expected. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...Freeze Watch from late Monday night through Tuesday morning for PAZ054-055-060>062-101>106. Coastal Flood Advisory from 1am to 6am EDT Sunday for PAZ070- 071-106. NJ...Coastal Flood Advisory from 11pm this evening to 3am EDT Sunday for NJZ016. Coastal Flood Advisory from 8pm this evening to 2am EDT Sunday for NJZ012>014-020>027. Freeze Watch from late Monday night through Tuesday morning for NJZ001-007>010-012-013-015>023-027. Coastal Flood Advisory from 1am to 6am EDT Sunday for NJZ017>019. DE...Coastal Flood Advisory from 11pm this evening to 3am EDT Sunday for DEZ001. Coastal Flood Advisory from 8pm this evening to 2am EDT Sunday for DEZ002>004. MD...None. Marine Small Craft Advisory from 8am to 6pm EDT Sunday for ANZ430- 431-450>455. Dense Fog Advisory until 4pm EDT this afternoon for ANZ431- 451>455-481>483-485. |
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