Friday, April3, 2020
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Marine Weather and Tides
North Cape May, NJ

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:38AMSunset 7:27PM Friday April 3, 2020 6:23 AM EDT (10:23 UTC) Moonrise 2:11PMMoonset 4:08AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 days in cycle
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.
Marine Forecasts
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ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 405 Am Edt Fri Apr 3 2020
.small craft advisory in effect until 4 pm edt this afternoon...
Today..NW winds 20 to 25 kt, diminishing to 15 to 20 kt this afternoon. Gusts up to 30 kt. Waves 3 to 4 ft. A slight chance of showers late this morning and afternoon.
Tonight..N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 ft or less.
Sat..NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves around 3 ft early in the morning, then 2 ft or less.
Sat night..SE winds 5 to 10 kt. Waves 2 ft or less.
Sun..SE winds 5 to 10 kt. Waves 2 ft or less.
Sun night..S winds 5 to 10 kt, becoming sw after midnight. Waves 2 ft or less.
Mon..SW winds around 5 kt. Waves 2 ft or less.
Mon night..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of showers after midnight.
Tue..SW winds around 5 kt. Waves 2 ft or less. A chance of showers in the morning.
Tue night..S winds 5 to 10 kt. Waves 2 ft or less. A chance of showers.
ANZ400 405 Am Edt Fri Apr 3 2020
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Low pressure south of the canadian maritimes will retrograde back towards the mainland today before departing over the weekend. Meanwhile, high pressure over the great lakes and ohio valley slowly builds east, and will be over the northeast and mid-atlantic over the weekend. This high moves offshore Sunday night, and a warm front lifts north through the region. High pressure returns on Monday, then moves offshore Tuesday. A series of weak low pressure systems will pass through the region next week until a stronger cold front passes through the region late in the week.


7 Day Forecast for Marine Location Near North Cape May, NJ
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location: 38.97, -74.96     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 030909 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 509 AM EDT Fri Apr 3 2020

SYNOPSIS. Low pressure south of the Canadian Maritimes will retrograde back towards the Mainland today before departing over the weekend. Meanwhile, high pressure over the Great Lakes and Ohio Valley slowly builds east, and will be over the Northeast and Mid-Atlantic over the weekend. This high moves offshore Sunday night, and a warm front lifts north through the region. High pressure returns on Monday, then moves offshore Tuesday. A series of weak low pressure systems will pass through the region next week until a stronger cold front passes through the region late in the week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. A large offshore ocean storm will retrograde south- southwestward a few hundred miles off our coast today, beneath the influence of a strong high latitude block and embedded within a broad upper level trough offshore. This will lead to today being a considerably less pleasant day than yesterday. Widespread cloudiness has already pinwheeled southwest across most of the region and will remain in place through the day. As the center of the low draws a little closer, some shower activity will also likely rotate in. This is already occurring in northeastern portions of the forecast area. The best chance for showers will be in the eastern half of the region, with activity gradually shifting southward through the day. Showers look like they will be mainly light and "spritzy", with the various high res models all a little different in their evolution. Rainfall totals mostly less than a tenth of an inch.

Another breezy day is expected, though it will probably not be quite as windy as yesterday. While the center of the low will be closer, it is also weakening and the gradients are starting to slowly relax. Still, gusts to 30 mph are likely in many areas, and a bit stronger at the coast. Highs are forecast to be mainly in the mid 50s as 850mb temperatures near 0C and the widespread clouds and showers will keep us a little cooler than average.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SATURDAY/. Improving conditions are expected tonight as high pressure starts to build in from the west. The offshore low will continue shifting southward, but will begin to move in a more southeasterly direction as it says goodbye to the East Coast for good. Mostly cloudy conditions should linger through the night, but the shower risk will decrease. In addition, as the low moves away, the pressure gradient will weaken and winds will finally relax in earnest. Lows ranging from the upper 30s to mid 40s as cloud cover and the lighter but still steady breeze will help keep the lows a little above average.

LONG TERM /SATURDAY THROUGH THURSDAY/. Low pressure over the Western Atlantic, generally about 500 miles east of the Carolina coast, will continue to drift offshore on Saturday. Meanwhile, high pressure over the Ohio Valley builds east into western New York and Pennsylvania. Some strong shortwave energy will pass through the region as well, and although some sprinkles, perhaps a light rain shower, are possible, think it should be dry enough at the surface that will not include PoPs in the forecast. It will be cloudy, though, with near normal temperatures in the mid to upper 50s. Onshore flow will keep temperatures cooler along the coasts.

Low pressure continues to drift out to sea over the weekend, and high pressure will be over the area on Sunday, and departs late in the day. WAA begins, and temperatures warm back up into the upper 50s and lower 60s. Another warm front lifts north through the region Sunday night, and high pressure redevelops west of the area for the start of the new week. It will turn much warmer on Monday with highs in the mid to upper 60s throughout.

From there, a series of low pressure systems will begin to affect the area starting on Tuesday, and there will be at least a chance for showers through Thursday. A stronger area of low pressure passing through Canada should drag a stronger cold front through the region late Thursday.

AVIATION /09Z FRIDAY THROUGH TUESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . Mainly VFR conditions expected through this morning, with ceilings gradually lowering. This afternoon, development of MVFR ceilings is likely in most areas, though RDG and ABE may remain VFR. Scattered light rain showers possible especially east of PHL. Northwest winds around 15 kt with gusts up to 30 kt possible, slowly diminishing late this afternoon and this evening. Overall high confidence, though fluctuations between low end VFR and high end MVFR conditions are possible.

Tonight . Mainly MVFR with ceilings around 2000-3000 ft, but low end VFR may hold on near RDG and ABE. Winds becoming northerly early, then north-northeasterly late, with speeds decreasing to around 5 to 10 kt. High confidence.

Outlook .

Saturday . VFR. NE winds 5-10 kt, becoming LGT/VRB Saturday night. High confidence.

Sunday . VFR during the day, then a chance for MVFR with scattered showers Sunday night as a warm front lifts through the region. W-SW winds 5-10 kt. Moderate confidence.

Monday through Tuesday . Mainly VFR conditions expected. Light west to southwest winds, with localized sea breezes along the coasts. Moderate confidence.

MARINE. Today . SCA conditions expected. Northwest winds gusting 25 to 30 kt. A few gale force gusts are possible especially this morning on the lower Delaware Bay and on the Atlantic coastal waters of Delaware and southern New Jersey. Seas 4 to 6 ft.

Tonight . On Delaware Bay, conditions should subside to sub-SCA levels early with winds gradually turning northerly and gusts diminishing to 20 kt or less. On the Atlantic coastal waters, SCA conditions will continue. Winds will shift to northerly then north- northeasterly at 15 to 20 kt with gusts to 30 kt. Seas building to 5 to 8 ft.

Outlook .

Saturday through Sunday night . A prolonged period of SCA conditions expected for the ocean waters. There will be wind gusts to 25 kt on Saturday, and then seas will remain elevated at 4-6 feet through Sunday. Sub-SCA conditions expected on DE Bay during this time.

Monday through Tuesday . Sub-SCA conditions expected on DE Bay and the Atlantic Coastal waters.

TIDES/COASTAL FLOODING. Low pressure over the western Atlantic Ocean will combine with increasing astronomical tides due to an approaching full moon to result in a period of coastal flooding during the times of high tide late tonight through Saturday morning.

Widespread minor tidal flooding is possible, with areas of moderate flooding across southern New Jersey and Delaware. Will go ahead and hoist a Coastal Flood Watch for Atlantic, Cape May, and Cumberland counties in southern New Jersey, and for Kent and Sussex counties in Delaware from 2am-10am Saturday.

For the northern New Jersey areas of Monmouth, Ocean, and southern Burlington counties, a Coastal Flood Advisory will likely be needed for minor coastal flooding, likewise for New Castle county, Delaware, and Salem county, New Jersey.

For the tidal Delaware River, at least one round of minor flooding is possible on Saturday, but confidence is a little lower owing to increased model variability and predominant northerly flow. For the eastern shores of Chesapeake Bay, confidence is also rather low. The north to northwest flow would suggests a reduced threat, but will need to watch lower portions of the bay closely to determine if sufficient water evacuation occurs between high tides to mitigate the threat of higher tidal levels in upper portions of the bay.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . Coastal Flood Watch from late tonight through Saturday morning for NJZ021>025. DE . Coastal Flood Watch from late tonight through Saturday morning for DEZ002>004. MD . None. MARINE . Small Craft Advisory until 7 PM EDT Saturday for ANZ450>455. Small Craft Advisory until 4 PM EDT this afternoon for ANZ430. Small Craft Advisory until 8 PM EDT this evening for ANZ431.

Synopsis . MPS Near Term . O'Brien Short Term . O'Brien Long Term . MPS Aviation . MPS/O'Brien Marine . MPS/O'Brien Tides/Coastal Flooding . MPS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CMAN4 - 8536110 - Cape May, NJ 0 mi53 min WNW 8.9 G 16 50°F 49°F1004 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 8 mi59 min NNW 19 G 25 1004.8 hPa
LWSD1 - 8557380 - Lewes, DE 15 mi53 min WNW 24 G 27 51°F 49°F1005 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 32 mi53 min NW 23 G 28 50°F 1005.3 hPa
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 38 mi33 min WNW 23 G 31 49°F 49°F4 ft1000 hPa (-0.8)
ACYN4 - 8534720 - Atlantic City, NJ 39 mi53 min 50°F 46°F1003.4 hPa
OCIM2 - 8570283 - Ocean City Inlet, MD 45 mi53 min NW 16 G 19 50°F 49°F1005.9 hPa
JCRN4 - Jacques Cousteau Reserve, NJ 47 mi53 min WNW 7 49°F 1004 hPa26°F

Wind History for Cape May, NJ
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wildwood, Cape May County Airport, NJ4 mi27 minNW 14 G 2310.00 miFair50°F30°F48%1004.7 hPa

Link to 5 minute data for KWWD

Wind History from WWD (wind in knots)
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1 day agoNE13
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N7E10SE9SE7SE6SE4SW3CalmCalmCalmNW6NW7NW13
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Tide / Current Tables for Cape May Canal, Cape May, Delaware Bay, New Jersey
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Fri -- 02:56 AM EDT     1.41 knots Max Flood
Fri -- 04:07 AM EDT     Moonset
Fri -- 06:15 AM EDT     -0.00 knots Slack
Fri -- 06:41 AM EDT     Sunrise
Fri -- 10:05 AM EDT     -1.32 knots Max Ebb
Fri -- 12:59 PM EDT     0.00 knots Slack
Fri -- 02:12 PM EDT     Moonrise
Fri -- 03:48 PM EDT     1.19 knots Max Flood
Fri -- 06:49 PM EDT     -0.00 knots Slack
Fri -- 07:26 PM EDT     Sunset
Fri -- 10:17 PM EDT     -1.19 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.81.21.41.20.70.2-0.4-0.9-1.2-1.3-1.2-0.700.61.11.20.90.5-0.1-0.6-1-1.2-1.1

Weather Map
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wmap_A
GEOS Local Image of Mid-Atlantic    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (6,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.