Saturday, February27, 2021
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Marine Weather and Tides
North Cape May, NJ

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:33AMSunset 5:51PM Saturday February 27, 2021 3:59 AM EST (08:59 UTC) Moonrise 7:22PMMoonset 8:07AM Illumination 100% Phase: Full Moon; Moon at 15 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- 307 Am Est Sat Feb 27 2021
Today..S winds 10 to 15 kt, becoming sw this afternoon. Gusts up to 20 kt. Waves around 3 ft. Rain this morning, then a chance of rain early this afternoon.
Tonight..W winds 5 to 10 kt, becoming ne late. Waves around 3 ft. A chance of rain late.
Sun..E winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the late morning and afternoon. Waves 2 ft or less. Rain. Vsby 1 to 3 nm in the afternoon.
Sun night..W winds around 10 kt. Waves 2 ft or less. Rain. Vsby 1 to 3 nm until early morning.
Mon..NW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. A chance of showers in the morning.
Mon night..W winds 15 to 20 kt, becoming nw 20 to 25 kt after midnight. Gusts up to 30 kt. Waves 2 ft or less, then around 3 ft after midnight.
Tue..NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Waves around 3 ft.
Tue night..W winds around 10 kt, becoming S after midnight. Waves 2 ft or less.
Wed..S winds around 10 kt. Waves 2 ft or less. A chance of rain. Vsby 1 to 3 nm in the morning.
Wed night..SW winds around 10 kt, becoming nw after midnight. Waves 2 ft or less. A chance of rain in the evening.
ANZ400 307 Am Est Sat Feb 27 2021
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure centered off the new jersey coast this afternoon will continue to move farther out to sea. Weak low pressure approaching from the southwest is forecast to pass through our region on Saturday, followed by another low from the west on Sunday. A cold front is expected from the northwest early on Monday. A secondary cold front is anticipated on Monday night with high pressure arriving in its wake for Tuesday. An area of low pressure may pass off the middle atlantic coast on Wednesday. High pressure should then influence our weather on Thursday, with a cold front possible on Friday.


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 270257 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 957 PM EST Fri Feb 26 2021

SYNOPSIS. High pressure centered off the New Jersey coast this afternoon will continue to move farther out to sea. Weak low pressure approaching from the southwest is forecast to pass through our region on Saturday, followed by another low from the west on Sunday. A cold front is expected from the northwest early on Monday. A secondary cold front is anticipated on Monday night with high pressure arriving in its wake for Tuesday. An area of low pressure may pass off the Middle Atlantic coast on Wednesday. High pressure should then influence our weather on Thursday, with a cold front possible on Friday.

NEAR TERM /THROUGH SATURDAY/. A mid level ridge axis quickly continues to move offshore with surface high pressure also shifting offshore. This will result in the flow aloft backing more to southerly ahead of our next storm system. Clouds will continue to thicken across the area this through tonight as the atmosphere continues to moisten in the lower levels. Lingering dry air with dew points still in the teens over the Poconos is all but too suspicious with winter weather moving into the region.

Starting off with the synoptics, the main upper-level trough remains across the northern Rockies to the Midwest into Saturday, while a leading shortwave trough ejects across the Great Lakes region tonight into Saturday morning. This feature will assist in downstream increasing low- level warm air advection. There is also a southerly low-level jet at 925 mb on the order of 35-50 knots forecast to move across much of our area Saturday morning, which will enhance the low-level warm air advection for a time and also a zone of ascent.

Precipitation will continue to overspread the area from southwest into the overnight. Given the warm air advection much of the region will see rain, however areas north and west of I-95 (fall line) will start as some snow or a wintry mix before transitioning to rain very early Saturday morning. The forecast soundings overall show warming between about 750 mb and 850 mb, which becomes deep enough even all the way into the Poconos for a change to a wintry mix before changing to rain. During the transition, we loose the ice aloft and therefore some freezing rain for a short period of time should occur mainly across the Pocono Plateau and into Sussex County, New Jersey. As previously mentioned, the dry air and lingering cold air makes for concern that any bit of cold air damming that occurs tonight will lead to more troublesome freezing rain at higher elevations where dew points remain low (mainly above 1000 ft).

Snow amounts before a change to rain look to be a coating to perhaps an inch along the I-78 corridor (less farther south) and 1-2 inches in the Poconos to far northwestern New Jersey. Even though snow totals should remain below advisory thresholds, the concern for ice warranted a Winter Weather Advisory for Carbon and Monroe Counties. Main concern is for interstate travelers to who may otherwise be unaware of the ice potential. Surface temperatures are forecast to gradually rise overnight, with this more pronounced across the Coastal Plain. The extent of the low-level dry air at the onset though may delay the temperature rise some across the northern and western areas, as dew points this afternoon are in the teens.

For Saturday, weak low pressure across the Great Lakes moves across adjacent Canada while a secondary low may develop over our area before quickly shifting to the northeast. The system is forecast to be rather progressive therefore the rain is expected to be ending from about late morning/midday onward. Plenty of low-level moisture remaining should keep lots of clouds in for much of the day, however the low-level flow is forecast to shift to the southwest and west during the afternoon which may result in some improvement by late afternoon. Overall, we continued with the idea of lots of clouds through the afternoon but drying out as well. It should become quite mild at least from about the I-95 corridor south and east where more of a warm sector gets involved, with temperatures rising into the 50s.

SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/. Dry air is forecast to filter into our region on a northerly wind on Saturday night. There may be some breaks in the cloud cover, especially over eastern Pennsylvania, and northern and central New Jersey. However, clouds will be quick to return from the west and southwest ahead of our next weather system.

A series of impulses traveling in the west southwest mid level flow should pass overhead from Sunday into Sunday night. Weak low pressure is expected to develop in northern Virginia on Sunday afternoon, before passing off the New Jersey coast on Sunday evening.

Precipitation is forecast to begin spreading into southeastern Pennsylvania, eastern Maryland and Delaware toward daybreak on Sunday. The area of precipitation should expand quickly over the remainder of eastern Pennsylvania and New Jersey during the morning hours on Sunday. This will be an all rain event for our region, with one possible exception. Temperatures are expected to drop below freezing in spots in the Pocono Region and far northern New Jersey early on Sunday morning. If the rain arrives before temperatures have a chance to rise, there could be some spotty light freezing rain in those areas at the very onset.

The rain will continue into Sunday afternoon and it may become moderate to heavy at times. The precipitation is forecast to end gradually from northwest to southeast on Sunday night. A secondary wave of low pressure may keep the rain in eastern Maryland, Delaware and southern New Jersey for much of the night. Any lingering rain should move off the coast on Monday morning with the arrival of a cold front.

Rainfall totals from Sunday into Sunday night are anticipated to favor the 0.5 to 1.0 inch range in our region. It continues to appear as though the axis of heaviest rain may extend across southeastern Pennsylvania and central New Jersey. The antecedent conditions will remain saturated due to Saturday's precipitation, as well as the continuing snowmelt in eastern Pennsylvania and northern New Jersey. There is the potential for some localized minor flooding.

Dry air should begin to arrive on Monday in a developing west northwest wind.

We should have a fairly wide temperature spread in our region on Sunday afternoon, with readings ranging from the upper 30s on the Pocono Plateau to the lower 60s in southern Delaware. Highs on Monday will likely favor the 50s, with temperatures not getting above the 40s in the Pocono Region and in far northern New Jersey.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/. A robust mid level short wave trough approaching from the Great Lakes, and its associated surface cold front, should pass through our region on Monday night. Cold high pressure is anticipated to follow for Tuesday under a mostly sunny sky. Temperatures on Tuesday should be about 5 to 7 degrees below normal.

The high is forecast to move off the Middle Atlantic coast on Tuesday night.

The model guidance remains in less than ideal agreement for the period from Wednesday through Friday. We will continue to hint at some precipitation on Wednesday with the potential for a low passing off the Middle Atlantic coast. It looks as though high pressure may follow for Thursday, with a cold front arriving from the northwest on Friday. Temperatures are expected to be seasonable.

AVIATION /03Z SATURDAY THROUGH WEDNESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Tonight . VFR ceilings lower to MVFR/IFR with rain developing from southwest to northeast toward late evening after 03Z into the overnight. This should start as snow or a rain/snow mix at RDG, ABE, and TTN (rain elsewhere) before changing to just rain. There could be a coating of snow at RDG and ABE. Southeast winds around 5 knots becoming light and variable for a time, then becoming easterly 5-10 knots late. Low-level wind shear included after 06z as a 35-45 knot southerly low-level jet near 2000 feet arrives. Low confidence on specific timing of low ceilings and visibility restrictions.

Saturday . MVFR/IFR conditions in rain, however the rain will end in the afternoon with some ceiling improvements possible. Southeast winds around 10 knots becoming south to southwest or west in the afternoon. Low-level wind shear in the morning as a 35-45 knot southerly low-level jet near 2000 feet moves through. Low confidence if conditions improve significantly by late afternoon.

Outlook .

Sunday . MVFR/IFR conditions in rain. The rain may become moderate to heavy at times. Southeast wind 5 to 10 knots. Medium confidence.

Monday . MVFR conditions early improving to VFR. Northwest to west wind increasing to 10 to 15 knots with gusts around 20 knots. Medium confidence.

Tuesday . VFR. Northwest wind 10 to 15 knots with gusts around 20 knots. Medium to high confidence.

Wednesday . VFR/MVFR with a chance of rain. South to east wind 5 to 10 knots. Low confidence.

MARINE. A Small Craft Advisory remains in effect Saturday. Onshore winds will increase tonight then peak Saturday morning as a storm system quickly moves through. As the system starts to depart during Saturday, the winds will turn to more southerly and eventually westerly and diminish. The main wind surge from the southeast along with building seas looks to be confined to the Atlantic coastal waters, therefore the advisory was not expanded to include Delaware Bay at this time.

Outlook .

Saturday night . A Small Craft Advisory is in effect for our ocean waters for wave heights around 5 feet.

Sunday and Sunday night . Even though wind speeds should remain below 25 knots, wave heights on our ocean waters may fluctuate around 5 feet.

Monday . No marine headlines are anticipated.

Monday night and Tuesday morning . Northwest wind increasing to around 25 knots with gale force gusts possible.

Tuesday afternoon . A northwest wind 15 to 20 knots with gusts around 25 knots.

Tuesday night and Wednesday . No marine headlines are anticipated.

PHI WATCHES/WARNINGS/ADVISORIES. PA . Winter Weather Advisory until 9 AM EST Saturday for PAZ054-055. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory from 7 AM Saturday to 6 AM EST Sunday for ANZ450>455.

Synopsis . Iovino Near Term . Davis/Gorse Short Term . Iovino Long Term . Iovino Aviation . Davis/Gorse/Iovino Marine . Davis/Gorse/Iovino


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CMAN4 - 8536110 - Cape May, NJ 0 mi59 min E 13 G 17 43°F 39°F1024.5 hPa (-4.6)
BRND1 - 8555889 - Brandywine Shoal Light, DE 8 mi59 min E 16 G 19 1025.4 hPa (-4.2)
LWSD1 - 8557380 - Lewes, DE 15 mi59 min E 11 G 14 43°F 40°F1024.6 hPa (-4.3)
SJSN4 - 8537121 - Ship John Shoal, NJ 32 mi59 min ENE 8 G 8.9 38°F 37°F1026.1 hPa (-3.8)
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 38 mi69 min 3 ft
ACYN4 - 8534720 - Atlantic City, NJ 39 mi59 min 41°F 41°F1026.8 hPa (-3.7)
OCIM2 - 8570283 - Ocean City Inlet, MD 45 mi59 min ESE 8 G 12 45°F 43°F1024.9 hPa (-3.9)
JCRN4 - Jacques Cousteau Reserve, NJ 47 mi89 min NE 2.9 40°F 1030 hPa38°F

Wind History for Cape May, NJ
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wildwood, Cape May County Airport, NJ4 mi63 minE 11 G 1910.00 miLight Rain43°F40°F89%1025.5 hPa

Link to 5 minute data for KWWD

Wind History from WWD (wind in knots)
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Last 24hrCalmCalmW3W3N6N10NE8------E12E11SE10E7E6E7E6SE8SE7SE11E6E7E11E11
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NW7W9NW5NW53NW3CalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmS4S10S13S15S17
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S15S11S11S10SW13SW12W7W8W9

Tide / Current Tables for Cape May, ferry terminal, Delaware Bay, New Jersey (3)
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Cape May
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Sat -- 01:52 AM EST     -0.70 feet Low Tide
Sat -- 03:19 AM EST     Full Moon
Sat -- 06:34 AM EST     Sunrise
Sat -- 07:06 AM EST     Moonset
Sat -- 08:22 AM EST     5.98 feet High Tide
Sat -- 02:33 PM EST     -0.59 feet Low Tide
Sat -- 05:50 PM EST     Sunset
Sat -- 06:21 PM EST     Moonrise
Sat -- 08:41 PM EST     5.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.7-0.4-0.7-0.20.92.445.35.95.853.61.90.4-0.5-0.50.21.42.84.14.95.14.53.3

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Sat -- 12:55 AM EST     -1.46 knots Max Ebb
Sat -- 03:19 AM EST     Full Moon
Sat -- 03:32 AM EST     0.00 knots Slack
Sat -- 06:34 AM EST     Sunrise
Sat -- 06:37 AM EST     1.75 knots Max Flood
Sat -- 07:06 AM EST     Moonset
Sat -- 09:57 AM EST     -0.00 knots Slack
Sat -- 01:30 PM EST     -1.71 knots Max Ebb
Sat -- 04:22 PM EST     0.00 knots Slack
Sat -- 05:51 PM EST     Sunset
Sat -- 06:22 PM EST     Moonrise
Sat -- 07:12 PM EST     1.59 knots Max Flood
Sat -- 10:19 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.3-1.5-1.2-0.50.41.21.71.71.40.7-0-0.8-1.3-1.7-1.6-1.1-0.30.51.21.61.40.90.2-0.5

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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.