Manasquan Inlet to Little Egg Inlet NJ out 20 NM Marine Forecast
| Today...Sw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt This Afternoon. Seas 4 To 6 Ft. Wave Detail: S 6 Ft At 8 Seconds. A Slight Chance Of Tstms Late This Morning. A Slight Chance Of Showers Late This Morning And Early Afternoon, Then A Chance Of Showers And Tstms Late. |
| Tonight...Se Winds 10 To 15 Kt, Becoming Ne After Midnight. Seas 3 To 5 Ft. Wave Detail: S 4 Ft At 7 Seconds And E 2 Ft At 3 Seconds. Showers With A Chance Of Tstms In The Evening, Then Showers Likely After Midnight. |
| Thu...Ne Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 4 To 6 Ft. Wave Detail: Ne 5 Ft At 7 Seconds And S 3 Ft At 7 Seconds. A Chance Of Showers. |
| Thu Night...Ne Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming E 5 To 10 Kt After Midnight. Seas 3 To 5 Ft. Wave Detail: Ne 5 Ft At 7 Seconds And S 2 Ft At 6 Seconds. |
| Fri...S Winds 10 To 15 Kt, Increasing To 15 To 20 Kt With Gusts Up To 25 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: S 4 Ft At 7 Seconds And E 3 Ft At 7 Seconds. |
| Fri Night...Sw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 4 To 5 Ft. Wave Detail: S 5 Ft At 6 Seconds And E 2 Ft At 7 Seconds. |
| Sat...S Winds 10 To 15 Kt. Seas 3 To 4 Ft. |
| Sat Night...S Winds 15 To 20 Kt, Increasing To 20 To 25 Kt After Midnight. Seas 4 To 6 Ft. |
| Sun...Sw Winds 25 To 30 Kt. Seas 5 To 7 Ft. A Chance Of Showers In The Morning, Then Showers Likely In The Afternoon. |
| Sun Night...Sw Winds 20 To 25 Kt, Becoming Nw 15 To 20 Kt After Midnight. Seas 5 To 7 Ft. Showers Likely. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 839am EDT Wednesday April 1 2026 .WHAT HAS CHANGED... Temperatures continue to trend colder for Thursday. The Small Craft Advisory for the lower Delaware Bay has been allowed to expire. .KEY MESSAGES... 1. Near-record warmth today will be ended by a cold front sliding into the region today into tonight which will be accompanied by showers and thunderstorms. 2. A lingering frontal boundary Thursday into Friday will lead to a large temperature gradient across the area along with continuing chances for showers. 3. Temperatures increase into the weekend. A few showers or storms will be possible Saturday with more widespread showers and storms expected for Sunday. KEY MESSAGE 1...Near-record warmth today will be ended by a cold front sliding into the region today into tonight which will be accompanied by showers and thunderstorms. A cold front currently located well to the north of the area will sink south through the day today. The latest trends with this cold front have it a bit slower than yesterday with the front moving into our NW zones by the early afternoon. By the mid afternoon into the early evening, the front is moving through the I-95 corridor. For Delmarva, the front may not fully clear the area and has the potential to stall overnight. Due to this timing of the cold front, temperatures will be able to reach the mid 70s to mid 80s for highs in many locations. It will be cooler by the coast and in the higher elevations. Ahead of the cold front will be showers and thunderstorms. One recent trend is more limited coverage of showers and thunderstorms during much of the day today. Lingering clouds this morning into the afternoon will keep instability low for the northern part of our area. Some isolated showers look to linger this morning due to waning convection from the activity that was to our north and west. Additional isolated showers and thunderstorms look to develop this afternoon and early evening. The better coverage of showers and thunderstorms may not arrive until closer to the evening hours. MLCAPE values across the southern portion of SE PA over into the southern half of NJ look to be around 500 J/kg. Across Delmarva, values are higher at generally 500-1000 J/kg. Bulk shear values are upwards of 40-50 knots. Model soundings also show an inverted V profile with sufficient DCAPE. Mid-level lapse rates are also supportive of severe weather. All of this said, the Storm Prediction Center has a Marginal risk for severe thunderstorms for portions of SE PA, roughly the southern half of NJ and all of Delmarva. The primary threat will be damaging winds. Another component is heavy rain being produced by any thunderstorms as PWAT (Precipitable Water) values increase to 1.25-1.5 inches and the potential for storms to train over areas, so localized flooding can't be ruled out, especially if this occurred over the urban corridor. Once we head into tonight, the front looks to stall potentially near Delmarva. Lows tonight are in the mid 40s to mid 50s. Plenty of cloud cover tonight with more scattered coverage of showers. Isolated thunderstorms will remain possible overnight. Showers and any thunderstorms look to decrease in coverage into Thursday morning. KEY MESSAGE 2...A lingering frontal boundary Thursday into Friday will lead to a large temperature gradient across the area along with continuing chances for showers. Our cold front from Wednesday looks to stall over southern Delmarva for Thursday, converting into a backdoor cold front and keeping the area on the cool side of it along with mainly cloudy skies and east-northeast winds. There could be some light showers around or even some patchy drizzle but it will be too stable for any thunderstorms. with confidence increasing in the front being farther south, our temperature forecast for Thursday has trended colder. In fact portions of NE PA into northern NJ that are forecast to get down into the 40s for Wednesday night may remain stuck in the 40s for Thursday. Farther south, generally expect highs in the 50s over SE PA into southern NJ but even these temperatures could be a bit optimistic as there's some guidance that's even cooler. Closer to the front over our Delmarva zones, it looks to generally get into the 60s with these areas also having the best chances for seeing some sunshine. The front doesn't look to make much progress north for Thursday night so many areas should see lows in the 40s except some low/mid 50s over portions of Delmarva. Some spotty light showers will be possible but otherwise not expecting much in the way of precip. The front should finally lift back northward on Friday, bringing S/SW flow back across the region and warming afternoon highs into the 70s. With a bit more of a southerly component to the wind it will be cooler near the coast and potentially extending a bit farther inland compared to today and Wednesday. Highs for these coastal areas may only reach the low/mid 60s. Can't rule out a few shower or storms for Friday but overall it looks to be dry. KEY MESSAGE 3...Temperatures increase into the weekend. A few showers or storms will be possible Saturday with more widespread showers and storms expected for Sunday. We should remain largely in the warm sector for Saturday as one low will be pulling away as it moves into the Canadian Maritimes while a stronger low advances into the Great Lakes region. This should help keep us in the S/SW flow with highs Saturday likely a bit warmer than Friday...generally in the 70s to low 80s. However the front may waver near our northern zones or even make it slightly into our area at times so this will once again keep the chance for some shower/storms in the forecast. This will be mainly for areas N/W of the urban corridor though with POPs still only around 20 to 30 percent. The better coverage of rain showers arrives Sunday (POPs 60-70 percent) with a strong cold front moving through. Ahead of the cold front, highs are in the 70s for many spots with 60s in the Poconos and along the coast. Behind the cold front, lows are in the mid 30s to mid 40s. For Monday and Tuesday, highs reach the upper 40s to mid 50s. Marine A Small Craft Advisory remains in effect for all Atlantic Coastal waters until 6pm today. The Small Craft Advisory for the lower Delaware Bay has been allowed to expire. South-southwest winds around 10-20 kt are expected to continue into this morning with occasional gusts around 25 kt. Seas will largely range between 4-6 feet. Winds relax further this afternoon and remain out of the south-southwest at 10-15 kt with gusts to 20 kt. Seas remain elevated at 4-6 feet through much of the day. There is also the risk of showers/t-storms which will increase into the evening hours. For tonight, generally sub-SCA (Small Craft Advisory) conditions as seas are mainly 3-4 feet. Winds turn to be out of the northeast at around 10 kt with gusts to 15 kt. The exception is the northern two Atlantic Coastal marine zones which have the potential to see Small Craft Advisory conditions. Winds out of the northeast at 15-20 kt with gusts to 25 kt for these marine zones and seas 5-6 feet. The risk of showers and thunderstorms continues overnight for all marine zones. Outlook... Thursday through Friday night...Seas will be lingering around 4 to 5 feet for much of this period. Generally sub SCA (Small Craft Advisory) winds except a period of stronger east winds likely later Wednesday night into Thursday morning off the coast of Monmouth and Ocean Counties. Saturday...Conditions are expected to be below Small Craft Advisory criteria. Sunday...Small Craft Advisory conditions probable. Climate Unseasonable warmth continues across the region Wednesday. Given the current forecast, some inland areas could challenge their record high temperatures for April 1st. Location Record High 4/1 -------- --------------- ACY Atlantic City, NJ 80/1978 PHL Philadelphia, PA 81/1978 ILG Wilmington, DE 81/1978 ABE Allentown, PA 84/1978 TTN Trenton, NJ 81/1986 RDG Reading, PA 82/1917 GED Georgetown, DE 80/1979 MPO Mount Pocono, PA 81/1998 55N AC Marina, NJ 72/1955 NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 9am EDT this morning for ANZ431. Small Craft Advisory until 6pm EDT this evening for ANZ450>455. |
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