Slaughter Beach, DE Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Slaughter Beach, DE

April 29, 2024 2:47 AM EDT (06:47 UTC) Change Location
Sunrise 6:03 AM   Sunset 7:54 PM
Moonrise 12:03 AM   Moonset 8:58 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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Marine Forecasts
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ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 102 Am Edt Mon Apr 29 2024

Rest of tonight - SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog late with vsby 1 to 3 nm.

Mon - W winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. Patchy fog in the morning with vsby 1 to 3 nm.

Mon night - S winds 5 to 10 kt. Waves around 2 ft. Patchy fog after midnight with vsby 1 to 3 nm.

Tue - S winds 5 to 10 kt. Waves around 2 ft.

Tue night - S winds around 10 kt, becoming sw after midnight. Waves around 2 ft.

Wed - W winds 5 to 10 kt, becoming ne in the afternoon. Waves around 2 ft. A chance of showers.

Wed night - E winds around 10 kt. Waves around 2 ft. A chance of showers in the evening.

Thu - E winds 5 to 10 kt. Waves around 2 ft.

Thu night - SE winds 5 to 10 kt. Waves around 2 ft.

Fri - SE winds 5 to 10 kt. Waves around 2 ft.

Fri night - S winds 10 to 15 kt. Waves around 2 ft.

ANZ400 102 Am Edt Mon Apr 29 2024

Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay - High pressure builds in early this morning and lingers through the remainder of the day, before a series of fronts and low pressure systems affect the east coast Wednesday through the end of the week. High pressure looks to return to end the weekend and start the new week.


7 Day Forecast for Marine Location Near Slaughter Beach, DE
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Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 290622 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 222 AM EDT Mon Apr 29 2024

SYNOPSIS
An upper-level high pressure ridge will build along the East coast, with unseasonably warm temperatures expected Monday.
A backdoor cold front will then arrive Monday night and hang across our region on Tuesday, while an upper-level trough approaches. Showers and thunderstorms may threaten later Tuesday and possibly linger into Wednesday, before weak high pressure builds in for Thursday. A cold front could approach from the west later Friday and pass through during the weekend.

NEAR TERM /THROUGH TONIGHT/
As of 12:15AM...Conditions are relatively quiet across the region. Some shortwave energy remains and some rain showers can still be noted in the more northern parts of our forecast area.

Tonight...A mostly quiet and warm night will be tap for the region.
Any remaining scattered showers should dissipated by 1 or 2AM. Lows right around 60F can be expected with winds around 5 mph or less.
Some areas could see winds go light and variable at times. Added some patchy fog to the forecast with this update; many of the model soudings suggest some patchy fog could develop across areas during the early morning hours. Warm air advection will continue to occur and RHs should rise with time.

Today...500 mb heights look to be near 580 dam, values more typical of summertime. At the surface, high pressure will remain centered offshore of the Carolinas, helping to advect warmer and more moist air into the region. The result of this will be very warm day for the region with much above normal temperatures.

High temperatures are expected to soar into the mid to upper 80s in most interior locations under partly cloudy skies. Highs in the more urbanized areas could top out closer to 90 degrees, though readings of 90 degrees or higher still appear unlikely. Northwest flow will add a downsloping component to the winds and thus also help to boost temperatures locally near the urban corridor. The offshore wind will also allow for a notable warmup even along the immediate coast, with highs getting to the low to mid 70s before a sea breeze kicks in.

As the gradient flow weakens and shifts eventually to the southwest then south, a sea breeze will likely make significant inland progress into the I-95 corridor and perhaps even farther inland from there during the evening. This will cool temperatures off into the 70s and 60s by late evening. Dewpoints will be near 60F, so the Heat Index won't be much different than the air temperature. No heat headlines are anticipated. With some additional weak shortwave energy rounding the top of the upper-level ridge, some isolated showers or storm are possible north of Philly, however the subsidence will be quite strong and any convection will likely struggle to materialize.

Monday night...Overall, another warm night anticipated. A backdoor front will sag over region from the north/northeast and become stationary over the region. Low temperatures expected to be in the low to mid 60s southwest of the front and in the mid to upper 50s northeast of the front for most locations. With some lingering shortwave energy, some isolated showers remain possible, mainly for our northern areas. Model soundings support fog development once again during the early morning hours; cannot rule out some patchy fog development once again for some areas.

SHORT TERM /TUESDAY THROUGH WEDNESDAY/
Beginning on Monday evening, we may see a few lingering shower mainly across northern New Jersey, perhaps extending down to northern portions of the shore, but those will likely dissipate quickly after sunset with very weak synoptic-scale forcing and a mid/upper-level ridge axis aloft. Otherwise expect a mainly dry and quiet night. Low temperatures will be quite mild across much of our region, with many areas south and west of about Trenton forecast to stay above 60F, which would be the mildest night since last October. The exception, with lows into the lower 50s, will be toward the northern NJ shore. Surface high pressure presses southward across New England and sends a shallow backdoor cold front into the northeast corner of our area. That can be seen in the wind fields of the latest hi- resolution models.

While that ridge axis will start to give way to an approaching upper-level trough Monday night into Tuesday, shifting off the East Coast, mid-level temperatures will only lower slightly.
That warm air aloft will not manifest at the surface for northeast portions of our region, though, thanks to that back- door front. Models disagree on how far south that cooler airmass will seep, but expect most of the shore to stay in the 60s with east to southeast winds off the still chilly Atlantic waters.
Water temperatures are still mainly in the low to mid 50s. As the warmer air aloft overrides that cooler airmass, low clouds will develop late Monday night and may reach as far south as near Philly to Brigantine NJ early Tuesday morning. Some of those clouds should lift out heading toward the afternoon, especially away from the shore, but will still keep temperatures much cooler than Monday. For now we are still forecasting low 80s in Philly, but it will be a tricky forecast. Expect most areas northeast of there to struggle to reach higher than the low to mid 70s, with some model guidance suggesting parts of northern NJ to the Poconos will stay mostly cloudy and in the 60s on Tuesday.

Aside from the temperatures Tuesday, we will have to keep an eye out for showers and thunderstorms developing across central and eastern PA ahead of the approaching upper-level trough. The southern stream portion of the trough will split and hang back across the Tennessee Valley, with the northern stream shortwave tending to 'pull-up' and weaken as it approaches. Additionally, a new surface low will develop around SE PA into northern Delaware on Tuesday, before tracking ENE offshore Tuesday night.
All of this will tend to limit instability and forcing from the Delaware Valley eastward across NJ, so that storms will eventually weaken as they head into that airmass. That said, guidance does indicate 1000-2000 j/kg of CAPE and perhaps 30-35 kt of deep layer shear, so that while the absence of a distinct surface cold front and weaker forcing aloft may limit thunderstorm potential, anything that does develop across eastern PA could be rather strong, even locally severe, before it weakens. Do not expect widespread storms though, with fairly limited rainfall area-wide Tuesday afternoon and evening.

Even on Wednesday, as low pressure pushes offshore, a fairly moist atmosphere will remain in place, while some model guidance slows the upper-level trough passage enough so that it will not pass by portions of our area until the afternoon. That may allow a few spotty showers to linger, along with a fair amount of cloud-cover. Lowered high temperatures a bit from NBM guidance otherwise area-wide, as much of our region will be more exposed to cooler east-northeast flow, keeping highs mainly in the low to mid 70s from the Delaware Valley west, and in the 60s toward the shore.

LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
High pressure will take control heading into the last couple days of the work-week. While upper-level ridging will start to shift eastward across the Appalachians toward Friday, another surface high pressing southward from New England may bring another 'back-door' shot of cooler air in, keeping at least much of the shore and perhaps much of northern NJ in the 60s to low 70s. Dry weather is expected with fairly plentiful sunshine, and slightly above normal temperatures farther southwest from the marine influence. Some showers may threaten as early as late in the day Friday, with increasing clouds toward eastern PA, as the next storm system approaches. That looks to be another surface low lifting across the Great Lakes, with a weakening surface cold front heading our way over the weekend. Stayed with NBM POPs. Not looking like a washout, but some scattered showers and possibly some thunderstorms possible. Temperatures should remain pretty close to typical values for early May, if not slightly above normal.

AVIATION /06Z MONDAY THROUGH FRIDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Rest of Tonight...Mainly VFR. There is a growing concern for some patchy fog development during the early morning hours at several sites. For the most part, any fog development should just be light patchy ground fog not causing sub-VFR VISBYS.
However, cannot rule out fog causing some specific sites (e.g., KABE) to drop to IFR or lower at times. Will amend as needed.
Winds mainly light and variable. Moderate confidence.

Monday...VFR conditions with few to scattered clouds. Winds initially from the NNW/NW near 5-10 kts will back with time.
Sea breeze will develop and penetrate further inland with time during the afternoon/evening, causing winds to shift out of the S/SSE. Slight chance to chance (20-40%) of isolated/scattered showers in the afternoon into the evening, mainly for sites north of KPHL. High confidence overall, lower confidence in details (e.g., exact sea breeze timing).

Monday night...Mainly VFR, though it worth mentioning some guidance has cloud bases lowering to 10k ft or less for sites north of KPNE towards the end of the period. Some patchy fog may once again occur at some sites. Mainly variable winds 5 kts or less.
Moderate confidence.

Outlook...

Tuesday and Wednesday...Mainly VFR but occasional MVFR and even briefly/locally IFR conditions possible in scattered showers and thunderstorms later Tuesday afternoon and evening. Some of those showers may linger into Wednesday.

Thursday and Friday...VFR conditions expected.

MARINE
No marine headlines anticipated through Monday night. WSW winds 5-10 kts will shift briefly W then NW this early morning due to a land breeze. Winds shift to the SSE/S by late morning then hold S through Monday night. Seas 2-3 feet.

Outlook...

South to southeast winds may pick up to near 15 kt off the southern NJ and Delaware coast enough to raise seas above 4 ft.
Some scattered showers and even a stray thunderstorm will threaten by Tuesday evening and may linger into Wednesday.
Winds will tend more E to NE on Wednesday but still just around 10 kt or so, with seas near 3 ft. Expect very similar conditions for Thursday as high pressure builds southward from New England for the end of the work-week, with winds tending more southerly by Friday. Small Craft Advisory conditions are not anticipated through the week ahead.

CLIMATE
Near record breaking high temperatures are forecast on Monday.
Records for our climate sites are listed below:

Record High Temperatures Jan 25 Site Record/Year Allentown (ABE) 86/1974 AC Airport (ACY) 92/1974 AC Marina (55N) 88/2017 Georgetown (GED) 91/2017 Mount Pocono (MPO) 82/1974 Philadelphia (PHL) 90/1974 Reading (RDG) 91/1888 Trenton (TTN) 88/1974 Wilmington (ILG) 91/1974|

PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
BRND1 - 8555889 - Brandywine Shoal Light, DE 11 mi47 min WSW 17G18 67°F 30.02
LWSD1 - 8557380 - Lewes, DE 15 mi47 min W 9.9G15 70°F 56°F30.03
CMAN4 - 8536110 - Cape May, NJ 19 mi47 min SW 8G11 63°F 30.02
SJSN4 - 8537121 - Ship John Shoal, NJ 25 mi47 min SW 12G12 64°F 30.01
44084 32 mi47 min 68°F 53°F2 ft
RDYD1 - 8551910 - Reedy Point, DE 44 mi47 min 61°F 61°F29.99
OCIM2 - 8570283 - Ocean City Inlet, MD 45 mi47 min W 8.9G11 67°F 54°F29.99
DELD1 - 8551762 - Delaware City, DE 46 mi47 min E 1G1.9 62°F 30.01
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 47 mi37 min SW 7.8G9.7 57°F 52°F30.0355°F
CA2 - 8571892 - Cambridge, MD 48 mi47 min WSW 5.1G9.9 71°F 61°F30.05
CHCM2 - 8573927 - Chesapeake City, MD 48 mi47 min W 1.9G4.1 64°F 62°F30.01


Wind History for No Ports station near this location
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KDOV DOVER AFB,DE 15 sm52 minSW 0810 smClear68°F59°F73%30.00
KGED DELAWARE COASTAL,DE 18 sm53 minWSW 0510 smClear68°F61°F78%30.03
KWWD CAPE MAY COUNTY,NJ 22 sm51 minWSW 1010 smClear68°F61°F78%30.02
Link to 5 minute data for KDOV


Wind History from DOV
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Tide / Current for Mispillion River entrance, Delaware Bay, Delaware
   
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Mispillion River entrance
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Sun -- 12:05 AM EDT     Moonrise
Sun -- 12:19 AM EDT     5.30 feet High Tide
Sun -- 06:06 AM EDT     Sunrise
Sun -- 07:09 AM EDT     0.32 feet Low Tide
Sun -- 08:56 AM EDT     Moonset
Sun -- 12:46 PM EDT     3.84 feet High Tide
Sun -- 06:58 PM EDT     0.45 feet Low Tide
Sun -- 07:51 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Mispillion River entrance, Delaware Bay, Delaware, Tide feet
12
am
5.3
1
am
5.2
2
am
4.6
3
am
3.7
4
am
2.6
5
am
1.5
6
am
0.7
7
am
0.3
8
am
0.5
9
am
1.2
10
am
2.1
11
am
3
12
pm
3.7
1
pm
3.8
2
pm
3.5
3
pm
2.9
4
pm
2.1
5
pm
1.3
6
pm
0.7
7
pm
0.4
8
pm
0.8
9
pm
1.7
10
pm
2.8
11
pm
3.9



Tide / Current for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
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Sun -- 12:03 AM EDT     Moonrise
Sun -- 01:19 AM EDT     -0.00 knots Slack
Sun -- 04:56 AM EDT     -1.33 knots Max Ebb
Sun -- 06:05 AM EDT     Sunrise
Sun -- 08:04 AM EDT     0.00 knots Slack
Sun -- 08:55 AM EDT     Moonset
Sun -- 10:50 AM EDT     1.04 knots Max Flood
Sun -- 01:48 PM EDT     -0.00 knots Slack
Sun -- 04:57 PM EDT     -0.95 knots Max Ebb
Sun -- 07:39 PM EDT     0.00 knots Slack
Sun -- 07:50 PM EDT     Sunset
Sun -- 10:52 PM EDT     1.42 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Delaware Bay Entrance, Delaware Current, knots
12
am
0.8
1
am
0.2
2
am
-0.4
3
am
-0.9
4
am
-1.2
5
am
-1.3
6
am
-1.2
7
am
-0.7
8
am
-0
9
am
0.5
10
am
0.9
11
am
1
12
pm
0.8
1
pm
0.4
2
pm
-0.1
3
pm
-0.6
4
pm
-0.9
5
pm
-1
6
pm
-0.8
7
pm
-0.4
8
pm
0.2
9
pm
0.9
10
pm
1.3
11
pm
1.4




Weather Map
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GEOS Local Image of east us   
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