Saturday, April21, 2018 L-36.com


Marine Weather and Tides
West Cape May, NJ

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:11AMSunset 7:45PM Saturday April 21, 2018 3:19 AM EDT (07:19 UTC) Moonrise 10:54AMMoonset 12:48AM Illumination 34% Phase: Waxing Crescent; Moon at 6 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- 306 Am Edt Sat Apr 21 2018
Today..NW winds 5 to 10 kt, becoming sw late. Waves 2 ft or less.
Tonight..SW winds 5 to 10 kt, becoming N with gusts up to 20 kt late. Waves 2 ft or less.
Sun..NE winds 5 to 10 kt with gusts up to 20 kt, becoming se early in the afternoon, then increasing to 5 to 10 kt late. Waves 2 ft or less.
Sun night..S winds 5 to 10 kt, becoming sw late. Waves 2 ft or less.
Mon..NE winds around 5 kt, becoming se in the afternoon. Waves 2 ft or less.
Mon night..SE winds 5 to 10 kt. Waves 2 ft or less, then around 3 ft after midnight.
Tue..E winds 10 to 15 kt. Waves around 3 ft.
Tue night..E winds around 15 kt. Waves 3 to 4 ft. Rain.
Wed..E winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Waves 3 to 4 ft. Rain.
Wed night..NW winds around 5 kt. Waves around 3 ft. Rain likely in the evening, then a chance of showers after midnight.
ANZ400 306 Am Edt Sat Apr 21 2018
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure over the great lakes builds east today, and eventually moves offshore on Monday. Low pressure over the gulf coast states lifts to the north and east, and slowly impacts the mid-atlantic during the mid-week period. Another area of low pressure may affect the area at the end of next week.

7 Day Forecast for Marine Location Near West Cape May , NJ
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location: 38.93, -74.94     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 210113
afdphi
area forecast discussion
national weather service mount holly nj
913 pm edt Fri apr 20 2018

Synopsis
High pressure builds over our area later tonight and remains in
place through the weekend, then shifts offshore on Monday. Low
pressure moves east across the gulf coast states Sunday and Monday,
then tracks up the mid-atlantic coast later Tuesday through late
Wednesday. High pressure then builds well to our west and south
later Thursday and Friday.

Near term until 6 am Saturday morning
Low pressure is positioned near the canadian maritimes this
evening while high pressure was centered over the midwest u.S.

The pressure gradient resulted in a breezy day earlier, but now
the gusts have subsided for the most part with the loss of
daytime mixing. The sustained wind speeds show a more gradual
decrease overnight.

Overall, not much change from earlier. The winds, and how fast
they diminish will be an important part of the forecast for
tonight and a key link to the frost freeze potential. The
current thinking is winds should become light late tonight with
high pressure building in from the west. Once this happens,
temperatures will drop rather quickly overnight, bottoming out
in the lower to mid 30s before daybreak (except upper 30s in the
cities and along the coast). A freeze warning was issued for
cecil county, md and for berks, western montgomery and western
chester counties in pa with lows expected to fall in the 30-32f
range and the growing season declared active. A frost advisory
was issued for northeastern md, de, the northern and western
suburbs of philadelphia and central and southern nj where (1)
the growing season is already underway, (2) temperatures are
forecast to dip into the mid 30s and (3) calm winds will provide
favorable conditions for frost formation. High clouds will
start to stream in from the west late but should not have much
of an impact on radiational cooling.

Short term 6 am Saturday morning through 6 pm Saturday
High pressure moves overhead tomorrow. A jet streak at the base of
the upper low to our northeast will be associated with mid and high
clouds over the region. There is some uncertainty regarding the
extent of the cloud cover tomorrow, but do think there will be
enough filtered sunshine or breaks in the clouds to allow for
temperatures to reach their full mixing potential during the
afternoon. Forecast highs generally range from 55-60f with slightly
cooler spots in the southern poconos and warmer spots in
philadelphia and toward southern delaware. NW winds 4-8 mph in the
morning, increasing to 8-12 mph in the afternoon.

Long term Saturday night through Friday
Summary... Turning warmer, however a coastal low looks to affect our
weather Tuesday night through Wednesday.

Synoptic overview... An upper-level trough across the northeast is
forecast to shift offshore later in the weekend. As this occurs, a
ridge slides eastward from the great lakes driving surface high
pressure over our area. However, strong energy underneath this ridge
moves across the gulf coast states over the weekend into early next
week with surface low pressure associated with it. Meanwhile,
northern stream short wave over the great lakes region is forecast
to begin phasing with the southern stream closed low over the
southeast u.S. The model spread increases during this time frame due
to the timing of the phasing and the speed of the resulting surface
low near the east coast. The surface low is forecast to basically
slide northward by the mid-atlantic coast during mid-week before
shifting to our northeast to start Thursday. An upper-level trough
looks to then settle into the east for the end of next week while
weak surface high pressure slides to our south. This trough may
eventually lead to another coastal low development with time.

For Saturday night through Monday... Surface high pressure builds
over the region as an upper-level ridge slides eastward. The surface
high though will shift offshore Monday as low pressure tracks across
the southeastern u.S. The presence of surface high pressure over the
area will result in subsidence and a lack of clouds overall with
less wind, with the airmass modifying through the weekend. This
leads to each afternoon getting warmer. The exception will be the
coastal locales as light winds Sunday and Monday especially should
result in a sea breeze each afternoon and early evening. Low
temperatures though will still be chilly due to good radiational
cooling conditions, with some places potentially having frost or
freeze conditions especially Saturday night.

For Tuesday through Thursday... While a coastal low is anticipated to
affect our weather, the details are less certain. This is due to the
timing of phasing energy toward the east coast, with a closed low
with the southern stream and a short wave arriving from the great
lakes region within the northern stream. The southern stream energy
will drive surface low pressure off the southeast u.S. Coast Tuesday
morning, then energy interaction between the northern and southern
streams will help turn the low northward by later Tuesday and
continue through Wednesday. The latest thinking is to bring the low
just off of our coast later Wednesday then into new england Thursday
morning. The combination of onshore flow (increasing moisture) and
increasing synoptic ascent will bring widespread rain mainly
Tuesday night and Wednesday. Some of the rain could be heavy at
times, however the system may be moving quick enough where the
window of opportunity for heavy rain is shortened.

A period of stronger onshore flow could result in some coastal
flooding, although we are between the new full moon cycles. There is
still plenty of time to iron out the details, however given enough
agreement for widespread rain for a time we continued with likely to
low-end categorical pops for portions of this time frame. Initial
overunning rain should develop later Tuesday, with rain shifting
north Wednesday and then ending at night or early Thursday as low
pressure shifts to our northeast.

For Friday... An amplified upper-level trough may settle into the
east with some weak surface features moving through. Depending on
the evolution aloft, the airmass looks mild though and therefore
some showers cannot be ruled out if there is enough instability
during the day. As of now, we followed the wpc guidance rather
closely.

Aviation 01z Saturday through Wednesday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.

Tonight...VFR. High clouds move in toward early morning with
cigs at or above 15 kft agl. NW winds with sustained speeds
decreasing more gradually from 8-12 kt early this evening to
3-6 kt overnight.

Saturday...VFR with mid to high clouds (cigs above 10 kft agl).

Light NW winds 5-10 kt.

Outlook...

Saturday night...VFR. Northwest winds 5-10 knots, becoming mostly
light and variable.

Sunday...VFR. Light and variable winds, becoming south to southwest
around 5 knots (becoming southeast in the afternoon at acy, miv and
possibly ilg).

Monday...VFR. East to southeast winds around 5 knots.

Tuesday... MainlyVFR with increasing and gradually lower clouds,
then some light rain should develop at night. East-southeast winds
around 10 knots. Moderate confidence.

Wednesday... MVFR ifr conditions probable with a period of rain. A
period of gusty east to southeast winds possible, then lighter and
turning west to northwest at night. Low confidence with the
details.

Marine
Tonight... Nw winds will continue to be in the 10-20 kt range
tonight. Short-period, wind-driven nwly swells will be in the
3-4 ft range in our coastal waters and 2 ft or less in the
delaware bay.

Saturday... Nw winds 10-15 kt in the morning will become
light variable toward midday and then S by mid afternoon in
association with the development of a sea-breeze near the
coast. Mesoscale models show the S winds strengthening to near
15 kt with gusts to 20 kt late in the day in the coastal waters
of nj.

Outlook...

Saturday night through Monday... .The conditions are expected to be
below small craft advisory criteria is over our area.

Tuesday and Wednesday... Small craft advisory conditions looking
likely. Low pressure is forecast to move up the east coast Tuesday
night through late Wednesday with onshore flow in advance of it.

Winds and seas therefore increase, with wind gusts anticipated as
of now to remain below gale force.

Phi watches warnings advisories
Pa... Frost advisory from 2 am to 8 am edt Saturday for paz102-104-
106.

Freeze warning from 2 am to 8 am edt Saturday for paz060-101-
103.

Nj... Frost advisory from 2 am to 8 am edt Saturday for njz012-013-
015>022-027.

De... Frost advisory from 2 am to 8 am edt Saturday for dez001>003.

Md... Frost advisory from 2 am to 8 am edt Saturday for mdz012-015-
020.

Freeze warning from 2 am to 8 am edt Saturday for mdz008.

Marine... None.

Synopsis... Gorse
near term... Klein po
short term... Klein
long term... Gorse
aviation... Gorse klein po
marine... Gorse klein po


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CMAN4 - 8536110 - Cape May, NJ 3 mi49 min NNE 2.9 G 8 42°F 49°F1029.4 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 10 mi55 min NNE 19 G 26 44°F 1030.1 hPa
LWSD1 - 8557380 - Lewes, DE 14 mi49 min NNE 17 G 21 45°F 49°F1029.9 hPa
DRSD1 - Delaware Reserve, DE 29 mi109 min N 4.1 43°F 1030 hPa26°F
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 35 mi89 min N 18 G 21 44°F 46°F3 ft1029.3 hPa (+1.3)30°F
ACYN4 - 8534720 - Atlantic City, NJ 40 mi49 min 41°F 47°F1029.4 hPa
OCIM2 - 8570283 - Ocean City Inlet, MD 42 mi49 min NNE 12 G 17 45°F 49°F1030 hPa
JCRN4 - Jacques Cousteau Reserve, NJ 49 mi49 min NW 2.9 37°F 1029 hPa26°F

Wind History for Cape May, NJ
(wind in knots)    EDIT      (on/off)   Help
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Last
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N4
G14
NW6
G20
W4
G12
NW4
G14
SW3
G9
NW5
G17
NW18
G24
NW21
G26
NW20
G27
N3
G8
NW5
G13
NW13
G18
NW13
G19
NW15
NW8
G15
NW11
G15
NW1
G5
W1
N5
G13
NE5
G9
NE4
N3
G9
N4
G9
N3
G6
1 day
ago
NE4
G8
E4
N5
G11
N4
G10
NE7
G13
E7
G13
SE4
SW3
SW9
S6
SW6
NW17
G24
NW25
G32
NW21
G27
NW6
G20
NW25
G35
NW21
G31
NW26
G32
SE4
G16
W4
G15
SE2
G6
NW3
G13
NW7
G19
NW4
G13
2 days
ago
NW9
G19
NW13
G20
NW12
G17
W15
G19
NW13
G17
NW13
G17
NW10
G13
W8
G11
NW6
W4
S9
G14
S10
SE9
G13
SE9
SE9
SE8
G11
S7
S8
G11
S7
G10
SE8
G11
E5
E5
NE4
G8

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wildwood, Cape May County Airport, NJ6 mi24 minN 510.00 miFair40°F25°F55%1030.5 hPa

Wind History from WWD (wind in knots)
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Last 24hrN10
G15
NW7
G15
NW12
G19
NW11
G20
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G22
NW10
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NW9
G20
NW14
G22
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G24
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NW12
G21
NW8
G21
NW12
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G18
NW6N6N4N7N6N9N7N8N5
1 day agoNE10NE9N7N9
G15
N12
G19
E125W5S7SW12SW8NW13
G19
NW13
G21
--NW9
G21
NW11
G24
NW15
G22
NW14
G26
NW15
G22
NW15
G23
NW12
G19
NW9
G20
W11
G17
NW10
G16
2 days agoW10
G20
W8
G16
NW9
G15
NW8
G15
W10W11
G17
W12
G17
W11
G16
--NW8W10
G15
S10S12S9S9SE7SE7SE6S6SE7S10SE6E5NE6

Tide / Current Tables for Cape May, Atlantic Ocean, New Jersey
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Cape May
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Sat -- 12:29 AM EDT     5.38 feet High Tide
Sat -- 12:48 AM EDT     Moonset
Sat -- 06:14 AM EDT     Sunrise
Sat -- 06:48 AM EDT     0.09 feet Low Tide
Sat -- 10:54 AM EDT     Moonrise
Sat -- 01:18 PM EDT     4.55 feet High Tide
Sat -- 06:51 PM EDT     0.45 feet Low Tide
Sat -- 07:42 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.35.34.63.4210.30.10.51.42.53.44.14.54.43.52.31.30.60.50.81.62.83.9

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Sat -- 12:48 AM EDT     Moonset
Sat -- 02:38 AM EDT     -0.00 knots Slack
Sat -- 06:15 AM EDT     Sunrise
Sat -- 06:27 AM EDT     -1.56 knots Max Ebb
Sat -- 09:22 AM EDT     0.00 knots Slack
Sat -- 10:55 AM EDT     Moonrise
Sat -- 12:09 PM EDT     1.41 knots Max Flood
Sat -- 03:12 PM EDT     -0.00 knots Slack
Sat -- 06:39 PM EDT     -1.29 knots Max Ebb
Sat -- 07:42 PM EDT     Sunset
Sat -- 09:15 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.20.5-0.3-0.9-1.3-1.5-1.5-1-0.30.51.11.41.30.80.1-0.5-1-1.2-1.3-0.9-0.20.61.2

Weather Map and Satellite Images
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GOES 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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Wind Forecast for Philadelphia/Mount Holly, PA (3,6,7,8)
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Disclaimer:
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 numerious 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.