Marine Weather Net

Great Egg Inlet to Cape May NJ out 20 NM Marine Forecast


THIS AFTERNOON

N
WINDS
10 - 15
KNOTS

TONIGHT

NW
WINDS
10 - 15
KNOTS

FRI

NW
WINDS
20 - 25
KNOTS

FRI NIGHT

NW
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
ANZ453 Forecast Issued: 102 PM EDT Thu Mar 28 2024

GALE WARNING IN EFFECT FROM 6 PM EDT THIS EVENING THROUGH FRIDAY MORNING
This Afternoon...N Winds 10 To 15 Kt. Seas Around 4 Ft. Nw Swell 2 To 3 Ft At 6 Seconds. Patchy Fog Early. Rain. Vsby 1 To 3 Nm Early.
Tonight...Nw Winds 10 To 15 Kt With Gusts Up To 25 Kt, Increasing To 15 To 20 Kt With Gusts Up To 35 Kt After Midnight. Seas 4 To 6 Ft. Nw Swell 2 To 3 Ft At 6 Seconds. Rain, Mainly In The Evening.
Fri...Nw Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 5 To 7 Ft. N Swell Around 2 Ft At 6 Seconds In The Morning, Becoming Light.
Fri Night...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 4 To 6 Ft. Se Swell 2 To 6 Ft At 8 Seconds, Becoming N 3 To 5 Ft At 8 Seconds After Midnight.
Sat...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 3 To 5 Ft. Se Swell 2 To 5 Ft At 7 Seconds.
Sat Night...W Winds 10 To 15 Kt. Seas 2 To 3 Ft. Se Swell 2 To 3 Ft At 9 Seconds.
Sun...W Winds 10 To 15 Kt, Becoming Ne After Midnight. Seas 2 To 3 Ft. A Chance Of Rain After Midnight.
Mon...E Winds 10 To 15 Kt. Seas 2 To 3 Ft. A Chance Of Rain, Then Rain Likely After Midnight.
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Area Forecast Discussion
National Weather Service Mount Holly NJ
1242pm EDT Thu Mar 28 2024

Synopsis
A slow moving cold front will approach our region from the west as a wave of low pressure tracks northeastward off the coast today, resulting in a period of unsettled weather. Weak high pressure will begin to build in on Friday. A weak clipper system may move through on Saturday, otherwise fairly quiet and seasonable conditions will prevail over the weekend. Another period of rainy weather is expected early next week as low pressure tracks toward our region from the Ohio Valley.

Near Term - Through Tonight
Cold front is through northern New Jersey and snakes around Philadelphia before passing through northern Delaware and through the eastern shores of Maryland. Meanwhile, surface low pressure lies just east of the North Carolina coast.

Waves of rain are running along the coast. Another area of rain will take a run at northern Delaware and Philadelphia between now and 2 pm. Otherwise, the steady rain remains east.

Rain tapers off from west to east this evening, and ends along the coast after midnight tonight.

Winds will settle out of the north to northwest today around 5-10 mph. The winds will increase into tonight to near 10-20 mph with gusts up to 25 mph possible. Temperatures will remain mild in the 40s to near 50s through today, although the cold advection beginning tonight will drop us back into the mid to upper 30s for low temperatures by Friday morning.

Short Term - Friday Through Saturday Night
Friday will feature a return to dry and sunny but windy weather as a broad upper-level ridge encompassing much of the central and eastern portions of the United States expands eastward toward the East Coast. Surface high pressure centered across the southeastern US with a weak ridge extending northward to the west of the Appalachians will start to take control, but as strong low pressure lifts out toward Nova Scotia, a strong pressure gradient will keep gusty northwest winds across the mid-Atlantic and Northeast on Friday. Expect gusts of 30 to 35 mph, locally/briefly higher over exposed higher elevations toward the Appalachians. Temperatures will be fairly seasonable, gradually moderating heading into the weekend, with lows mainly in the 30s and highs in the 50s. A weak 'clipper' system is still is projected in the model guidance to pass ESE across PA toward Delaware Bay on Saturday, along with a weak shortwave trough. The system will lack much moisture, so while some scattered showers are forecast to pass through portions of the area, some spots may end up dry, with less than a quarter-inch of rain even where showers or a briefly steadier period of rain does focus in around midday through Saturday afternoon. Westerly breezes will continue to ease Saturday into Saturday night.

Long Term - Sunday Through Wednesday
Weak high pressure passing eastward from the Great Lakes across the Northeast should result in quiet weather on Sunday, and the overall nicer day of the weekend as milder air continues to filter in on a westerly breeze. Lows in the 40s should be followed by highs mainly in the 60s. Some partial sunshine can be expected, but the sky cover forecast is somewhat questionable as one shortwave passes by to our north, as a warm front begins to approach from the Ohio Valley, probably at least resulting in some high cloudiness around.

Heading into early next week, the weather pattern will turn increasingly active across the eastern US. An upper-level trough over the Southwest will eject northeastward, with low pressure tracking across the Ohio Valley by Tuesday. An approaching warm front could bring some rain into our region as early as Monday, but models vary on that timing, so we have just a 30-50 percent chance of rain right now. Tuesday and Tuesday night, possibly into Wednesday, looks like the most likely period of wet weather, as that low pressure area lifts toward the lower Great Lakes, then transfers to a strengthening coastal low that lifts northeastward from the northern mid-Atlantic or New England. A rather potent upper-trough will drop southeastward across the Great Lakes and possibly phase with the aforementioned trough, supporting this strong area of low pressure. Will have to monitor this system for some heavy rain potential, followed by some gusty winds later Wednesday into Thursday. The greater impacts though look to target New England, especially northern portions, where a late-season snowstorm looks likely for them. Our temperatures will remain seasonably mild, with highs generally in the 50s and lows in the 40s early through mid next week.

Marine
Rain and fog will restrict visibility to around 1-3 NM for much of the day and into the evening. North to northwest winds will increase this evening with wind gusts near 35 kts forecast for a few hours between midnight tonight and mid-morning Friday. Thus, the Gale Watch was upgraded to a Gale Warning for tonight for all Atlantic and Delaware Bay coastal waters. Seas will also increase to around 4-7 feet tonight.

Outlook... Friday...In the wake of low pressure lifting out east of New England, fair but windy weather is forecast, with northwest winds prompting Gale Warnings overnight into early Friday morning. If we do have some gale gusts (greater than 34 kt) across portions of the coastal waters lingering early in the morning, we have high confidence that those will diminish to SCA (Small Craft Advisory) level winds/seas later Friday. However, gusts to 30 kt will still linger, even across Delaware Bay, with rough seas 5 to 7 ft across the open ocean.

Saturday and Sunday...SCA (Small Craft Advisory) conditions with respect to both winds and seas should end by Saturday morning, with westerly winds around 10-15 kt for the weekend. Chance of light rain later Saturday, otherwise mainly fair weather. Seas around 3 ft.

Monday...Winds switching to easterly 10-15 kt as a warm front approaches with a chance of rain. Seas around 3 ft.

Tides / Coastal Flooding
The threat of coastal flooding has come to an end, and it looks like we will continue to have no concerns for flooding through the weekend. We have been keeping an eye on tide gauges along the lower Delaware River overnight, but it looks like water levels are trending a little lower than forecast, so we may not even see any spotty minor flooding with high tide this morning.

NOAA Mount Holly NJ Office: Watches - Warnings - Advisories
PA...None. NJ...None. DE...None. MD...None.

Marine
Gale Warning from 6pm this evening to 10am EDT Friday for ANZ430-431-450>455.