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

April 12, 2024 5:05 PM EDT (21:05 UTC) Change Location
Sunrise 6:28 AM   Sunset 7:37 PM
Moonrise 7:48 AM   Moonset 11:41 PM 
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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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ANZ455 Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 402 Pm Edt Fri Apr 12 2024

.small craft advisory in effect through Saturday afternoon - .

Tonight - SW winds 10 to 15 kt, becoming W 15 to 20 kt late. Seas 4 to 7 ft. S swell 3 to 4 ft at 5 seconds.

Sat - W winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft. S swell 2 to 4 ft at 4 seconds.

Sat night - W winds 10 to 15 kt. Gusts up to 25 kt in the evening. Seas 3 to 5 ft. S swell 2 to 3 ft at 3 seconds.

Sun - W winds 5 to 10 kt, becoming sw 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft.

Sun night - SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. SE swell 2 to 4 ft at 4 seconds. A chance of showers.

Mon - W winds around 10 kt, becoming N in the afternoon. Seas 2 to 4 ft. SE swell 2 to 4 ft at 6 seconds.

Mon night - SE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. SE swell 2 to 3 ft at 8 seconds.

Tue - E winds around 10 kt, becoming se. Seas 2 to 3 ft.

Wed - S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.

ANZ400 402 Pm Edt Fri Apr 12 2024

Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay - A secondary cold front will cross the region tonight as an area of low pressure will continue to move into eastern canada tonight through Saturday. SEveral weak surface troughs will move across the area mid atlantic region into Saturday. High pressure will build across the southeast states over the weekend, before an area of low pressure moves out of the great lakes region and into the northeast states Sunday into Sunday night, bringing a cold front to the mid atlantic region. High pressure briefly builds across the region Tuesday, before a series of frontal boundaries and low pressure systems affect the east coast Wednesday through Friday of next week.


7 Day Forecast for Marine Location Near Dewey Beach, DE
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Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 122102 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 502 PM EDT Fri Apr 12 2024

SYNOPSIS
A secondary cold front will cross the region tonight as an area of low pressure will continue to move into eastern Canada tonight through Saturday. Several weak surface troughs will move across the area Mid Atlantic region into Saturday. High pressure will build across the southeast states over the weekend, before an area of low pressure moves out of the Great Lakes region and into the northeast states Sunday into Sunday night, bringing a cold front to the Mid Atlantic region. High pressure briefly builds across the region Tuesday, before a series of frontal boundaries and low pressure systems affect the east coast Wednesday through Friday of next week.

NEAR TERM /THROUGH SATURDAY NIGHT/
Latest analysis shows the surface low is now near the border of southern Ontario and southern Quebec, with the main surface cold front now off to our east. A secondary cold front lies in wait to our northwest, and this boundary crosses the region tonight accompanied by another shortwave rounding the bottom side of the closed low in southern Canada. Thus, while precip coverage has diminished presently, some spotty showers may re-fire over the next few hours, with more widespread showers particularly from I-95 north and west and especially across the Poconos later tonight into early Saturday. Temps likely even cool enough for a change to snow in the higher elevations of the Poconos, but little if any accumulation is expected. As high pressure starts to build in and the upper low pushes off the northeast Saturday into Saturday night, precip will dwindle and then clouds will gradually break. Winds will remain elevated through Saturday evening, with relatively high gusts of 25-35 mph this afternoon, a bit of a drop off this evening ahead of the secondary front, then gusts increasing again behind the front and with increased mixing on Saturday. We may be close to wind advisories across much of the area, with currently forecast gusts around 40 mph being just shy of criteria (46 mph/40 kts).
For now, will punt that decision to future shifts as confidence is low. As high pressure builds to our south Saturday night and the gradient relaxes, should see winds drop off below 10 mph overnight with clearing skies. Temps will be near 60 rest of today, dropping into the 40s tonight and rising only into the 50s on Saturday before dropping into the 40s again Saturday night. The Poconos will be about 10 degrees colder than these numbers, however.

SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
Sunday will begin dry as slight surface ridging moves offshore, before a warm front clips the area later in the day, followed by a cold front overnight. Precipitation chances increase later in the day and into the night Sunday. Guidance is indicating some instability across the area later in the day and into the night, so there will be a chance for a few thunderstorms. There is a fair amount of shear due to a belt of 50-60 knot 700-500 mb winds, so if there are any thunderstorms, so locally strong winds could develop, mainly over northeast Pennsylvania and northern New Jersey. Shower and thunderstorm activity will diminish during the night.

The cold front will push to our south by Monday, before weak high pressure approaches from the northwest overnight. Dry weather is expected to be in place for the start of the work week into Monday night.

LONG TERM /TUESDAY THROUGH FRIDAY/
On Tuesday, the weak high pressure will briefly build across the Mid Atlantic region, keeping dry weather through the day.
However, this will only be temporary as shower chances will increase overnight as a warm front approaches from the south.

The warm front will likely linger across the forecast area through the day Wednesday and into Wednesday, keeping elevated chances for showers, and even a few thunderstorms. A cold front is forecast to move across the area Thursday into Thursday evening, keeping chances of showers in the forecast through Thursday night. Yet another cold front could bring another round of showers during the day Friday into Friday evening.

AVIATION /21Z FRIDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...

Rest of today...Generally VFR but a stray shower may briefly reduce cigs/vsby to MVFR, most likely NW of I-95 terminals.
Winds mainly west 15-20 kts with gusts to 30 kts. Moderate confidence.

Tonight...Mainly VFR to start but dropping to MVFR overnight with passing front and some showers about. Worst conditions likely KRDG, best KACY. Will lose the gusts for the most part overnight with sustained remaining 10-15 kts, though gusts may kick back up upon frontal passage overnight. Moderate confidence.

Saturday...MVFR to start with a few lingering showers about, then gradually improving to VFR. Again, worst conditions KRDG and best KACY. Winds W to NW 15-25 kts with gusts to 35 kts, possibly 40 kts. Moderate confidence.

Saturday night...VFR. Winds W to NW 10-20 kts early diminishing to 5-10 kts. High confidence.

Outlook...

Sunday...VFR conditions expected most of the day, before Sub- VFR conditions possibly develop for northern areas late in the day as showers/possible thunderstorms approach the area.
Southwest winds 10- 20 knots, with gusts 20-30 knots. Moderate confidence.

Sunday night...Sub-VFR conditions could develop across the area as showers/possible thunderstorms move across the area. Winds become west and northwest 5-10 knots overnight behind a cold front. Moderate confidence.

Monday-Monday night...VFR conditions expected. Northwest winds 5-10 knots with gusts 15-20 knots during the day.

Tuesday-Tuesday night...VFR conditions exected. Northwest winds 5-10 knots early, become variable during the day, then south to southeast during the evening and overnight. Moderate confidence.

Wednesday...Sub-VFR conditions likely with showers. Southeast winds 5-10 knots. Low confidence.

MARINE
Small Craft Advisory conditions presently with westerly winds gusting up to 30 kts and waves of 6 to 10 feet. Seas diminish overnight to 4 to 8 ft with winds diminishing a bit in the evening before increasing behind a secondary cold front late tonight. Gales then expected to redevelop across most waters on Saturday behind said front with W to NW gusts up to 35 kts for a fair chunk of the day. Winds wind down back to SCA levels by Saturday evening and then sub-SCA overnight, with waves dropping to 2-4 ft by late night as well.

Outlook...

Sunday-Sunday night...Small Craft Advisory conditions expected.

Monday-Tuesday night...Conditions expected to fall below and remain below advisory levels into early next week.

Wednesday...Conditions may return close to advisory levels on Wednesday.

TIDES/COASTAL FLOODING
The coastal flood threat continues to diminish compared to Friday morning, but unfortunately due to a lingering surge of water trapped in some of the back bays as well as up the Delaware River, with continued runoff from the recent rainfall, some more localized areas of minor flooding will continue tonight, and even with Saturday morning's high tide along the lower Delaware River.

The back bay locations where coastal flooding remains a problem are particularly around northern Barnegat Bay in Ocean County, as well as Little Assawoman Bay in Sussex County, DE. Extended the Coastal Flood Advisory until Midnight for the former, as water levels still have a ways to go before they drop below minor flood stage, as within the back bays water struggles to drain out to the ocean. Further tidal flooding is NOT expected oceanside.

While the this morning's crest along the lower Delaware River did not quite reach expectations, moderate flooding levels were still achieved. With the current tidal anomaly running between 1.6 and 1.9 feet, this evening's 'lower high tide' should not reach minor flood stage. However, unless these water level anomolies lower more substantially later tonight, minor flood levels will still be reached on the tidal lower Delaware, including at Burlington and Philadelphia, for the Saturday morning high tide around 5 to 630 AM. It seems doubtful that water levels will lower quick enough, with continued runoff from tributary streams, creeks, and rivers. However, in any case, the water levels will not be nearly as high as what was experienced early Friday morning.

Heading through the rest of the weekend, with both astronomical tides lowering and continued runoff and drainage of the rivers and bays out to sea, the coastal flood threat should finally end.

PHI WATCHES/WARNINGS/ADVISORIES
PA...Coastal Flood Advisory from 4 AM to 9 AM EDT Saturday for PAZ070-071-106.
NJ...Coastal Flood Advisory from 4 AM to 9 AM EDT Saturday for NJZ017>019.
Coastal Flood Advisory until midnight EDT tonight for NJZ020- 026.
DE...Coastal Flood Advisory until 8 PM EDT this evening for DEZ003- 004.
MD...None.
MARINE...Small Craft Advisory until 6 AM EDT Saturday for ANZ430-431- 450>454.
Gale Warning from 6 AM to 6 PM EDT Saturday for ANZ430-431- 450>454.
Small Craft Advisory until 6 PM EDT Saturday for ANZ455.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
LWSD1 - 8557380 - Lewes, DE 8 mi48 min W 19G25 67°F 51°F29.53
44084 9 mi40 min 49°F4 ft
BRND1 - 8555889 - Brandywine Shoal Light, DE 22 mi48 min 29.51
CMAN4 - 8536110 - Cape May, NJ 22 mi48 min WSW 23G25 62°F 68°F29.51
OCIM2 - 8570283 - Ocean City Inlet, MD 24 mi48 min WSW 26G37 67°F 56°F29.49
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 25 mi36 min SW 12G14 55°F 50°F29.5450°F
SJSN4 - 8537121 - Ship John Shoal, NJ 47 mi48 min WSW 28G34 64°F 29.49


Wind History for Lewes, DE
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KGED DELAWARE COASTAL,DE 15 sm11 minW 11G2010 smMostly Cloudy64°F43°F45%29.55
Link to 5 minute data for KGED


Wind History from GED
(wind in knots)
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Tide / Current for Rehoboth Beach, Delaware
   
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Rehoboth Beach
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Fri -- 05:15 AM EDT     -0.28 feet Low Tide
Fri -- 06:27 AM EDT     Sunrise
Fri -- 08:47 AM EDT     Moonrise
Fri -- 11:29 AM EDT     3.97 feet High Tide
Fri -- 05:12 PM EDT     0.09 feet Low Tide
Fri -- 07:34 PM EDT     Sunset
Fri -- 11:44 PM EDT     4.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Rehoboth Beach, Delaware, Tide feet
12
am
4.5
1
am
3.6
2
am
2.4
3
am
1.2
4
am
0.2
5
am
-0.3
6
am
-0.1
7
am
0.7
8
am
1.7
9
am
2.7
10
am
3.4
11
am
3.9
12
pm
3.9
1
pm
3.3
2
pm
2.3
3
pm
1.3
4
pm
0.5
5
pm
0.1
6
pm
0.3
7
pm
1
8
pm
2.1
9
pm
3.1
10
pm
4
11
pm
4.5



Tide / Current for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
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Fri -- 01:12 AM EDT     -0.00 knots Slack
Fri -- 04:48 AM EDT     -1.63 knots Max Ebb
Fri -- 06:27 AM EDT     Sunrise
Fri -- 07:55 AM EDT     0.00 knots Slack
Fri -- 08:47 AM EDT     Moonrise
Fri -- 10:35 AM EDT     1.40 knots Max Flood
Fri -- 01:37 PM EDT     -0.00 knots Slack
Fri -- 04:53 PM EDT     -1.23 knots Max Ebb
Fri -- 07:34 PM EDT     Sunset
Fri -- 07:35 PM EDT     0.00 knots Slack
Fri -- 10:42 PM EDT     1.60 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
0.9
1
am
0.2
2
am
-0.6
3
am
-1.1
4
am
-1.5
5
am
-1.6
6
am
-1.3
7
am
-0.7
8
am
0.1
9
am
0.8
10
am
1.3
11
am
1.4
12
pm
1
1
pm
0.4
2
pm
-0.3
3
pm
-0.8
4
pm
-1.1
5
pm
-1.2
6
pm
-1
7
pm
-0.4
8
pm
0.3
9
pm
1
10
pm
1.5
11
pm
1.6




Weather Map
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GEOS Local Image of east us   
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