Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Northfield, NJ

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:15AMSunset 7:47PM Sunday August 20, 2017 11:13 AM EDT (15:13 UTC) Moonrise 4:50AMMoonset 7:09PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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ANZ452 Coastal Waters From Little Egg Inlet To Great Egg Inlet Nj Out 20 Nm- 917 Am Edt Sun Aug 20 2017
Today..NW winds 5 to 10 kt, becoming sw 10 to 15 kt late. Seas 2 ft or less. Mainly in S swell with a dominant period of 7 seconds.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt with gusts up to 15 kt in the late evening and early morning, then becoming nw late. Seas 2 ft or less. Mainly in se swell with a dominant period of 9 seconds.
Mon..NW winds around 5 kt, becoming sw around 5 kt late in the morning, then becoming S early in the afternoon, increasing to 10 to 15 kt late. Seas 2 ft or less. Mainly in se swell with a dominant period of 8 seconds.
Mon night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less, then around 3 ft early in the evening. Mainly in se swell with a dominant period of 8 seconds.
Tue..SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 4 ft.
Tue night..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers after midnight.
Wed..SW winds 10 to 15 kt, becoming W 5 to 10 kt in the afternoon. Seas 3 to 5 ft. A chance of showers and tstms.
Wed night..W winds 10 to 15 kt, becoming N after midnight. Seas around 3 ft. A chance of showers in the evening.
Thu..NE winds 5 to 10 kt. Seas around 3 ft in the morning, then 2 ft or less.
Thu night..E winds around 5 kt, becoming N after midnight. Seas 2 ft or less. Winds and seas higher in and near tstms.
ANZ400 917 Am Edt Sun Aug 20 2017
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will build in from the ohio valley today and then move offshore on Monday. A cold front will approach from the midwest on Tuesday while high pressure remains anchored off the eastern seaboard. The front is expected to move through the area on Wednesday. Canadian high pressure builds into the region late in the week.

7 Day Forecast for Marine Location Near Northfield, NJ
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location: 39.35, -74.54     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 201323
afdphi
area forecast discussion
national weather service mount holly nj
923 am edt Sun aug 20 2017

Synopsis
High pressure will build in from the ohio valley today and then move
offshore on Monday. A cold front will approach from the midwest on
Tuesday while high pressure remains anchored off the eastern
seaboard. The front is expected to move through the area on
Wednesday. Canadian high pressure builds into the region late in the
week and into next weekend.

Near term until 6 pm this evening
Only minor updates needed to reflect current temperature and dew
point trends, but otherwise the forecast remains on track.

The axis of the upper trough will move to the east of the area this
morning with flow aloft becomes more zonal behind the passing
trough. Meanwhile, surface high pressure will start to build in from
the west.

Some drier air will be across the region today and with little to no
moisture around, we should see plenty of sunshine and no rain. The
dry air will be slightly cooler than what was in place the past few
days but maximum temperatures will only be about 2-3 degrees cooler
than they were on Saturday. Expect highs to rise into the mid to
upper 80s across the forecast area with some upper 70s to lower 80s
across the southern poconos and northwest new jersey. With drier air
in place, it will feel much more comfortable outside.

Short term 6 pm this evening through 6 am Monday
The center of the high pressure will cross overhead tonight and then
push offshore early Monday. Flow across the region will be light and
skies should be relatively clear overnight. Cloud cover will start
to increase toward daybreak, mainly across delmarva, as return flow
around the high starts to bring some moisture back into the area.

Temperatures will respond to the relatively clear skies and light
winds overnight and we should radiate pretty well. Lows will drop
down into the low to mid 60s across much of the region with some
upper 50s across the higher elevations. Temperatures in
philadelphia, nearby suburbs, and along the coast will be slightly
warmer and in the mid to upper 60s.

Even with moisture starting to increase, do not see much in the way
of fog development overnight although a few patchy spots may
develop, mainly toward daybreak.

Long term Monday through Saturday
High pressure moves offshore on Monday. Southerly return flow around
the high develops across the mid-atlantic region. Meanwhile, a weak
shortwave disturbance embedded in an belt of stronger westerlies
residing to the north of the upper ridge is expected to approach
from the ohio valley during the afternoon and then pass through the
area Monday night. A few showers and storms could develop on Monday,
especially west of the delaware valley (delmarva-reading-lehigh
valley) late in the afternoon and evening when forecast soundings
show instability increasing in concert with the arrival of deeper
moisture from the southwest. Kept coverage isolated for the
afternoon hours with the greater lift from the shortwave trough
still to our west. Slightly higher coverage of showers and storms
may arrive in our far western zones during the evening.

Solar eclipse viewing Monday afternoon... It is important to note
the wide range of model solutions for cloud cover across the most of
the area, basically ranging from clear skies (with a minimal cumulus
deck and thin cirrus clouds) to cloudy skies. In general, rh fields
in the 850 mb layer (closely represents the ceiling height of the
cumulus field at the top of the mixed layer) for Monday afternoon
have trended higher with the most recent 00z models compared to 24
hours before. This trend seems loosely tied to models showing an
earlier exit of the high and a more pronounced warm-air moisture
advection pattern on the western side of the high. Unfortunately,
this means we increased cloud cover with the latest forecast update-
to partly sunny roughly south west of philadelphia and to mostly
sunny farther north east. While confidence in the official
(deterministic) sky cover percentages (seen in the ndfd graphics on
our website) is are not not particularly high, (in a probabilistic
framework) the likelihood of a having a decent view of the eclipse
increases the farther north and east you go.

Low pressure is expected to track from the great lakes into
southeastern canada on Tuesday. A cold front extending southward
from the low will move through the midwest states during this time.

The focus for showers and storms on Tuesday will be along a pre-
frontal trough to the lee of the appalachians. Accordingly, the
highest pops reside across our far western zones in eastern pa and
far northwestern nj. Tuesday is still expected to be the hottest day
of the period with highs generally in the lower 90s.

Showers and storms across northwestern zones may continue into the
overnight and progress farther south east across the forecast area
later Tuesday night as the cold front approaches. The highest pops
Tuesday night once again reside across the northwestern zones. While
showers and storms are forecast with the front moving through on
Wednesday, a morning-early afternoon timing of the FROPA may prevent
us from realizing our full convective potential (in terms of
thunderstorm coverage and severity) than if it coincided more
favorably with peak heating later in the day.

Showers and storms will end from northwest to southeast late in the
day Wednesday into Wednesday night as the front moves through the
area.

Canadian high pressure gradually builds into the area late in the
week. Dry conditions and below normal temperatures can be expected
Thursday through Friday with high pressure firmly in control of our
weather pattern. Highs will be in 70s and lower 80s each day with
lows in the 50s and 60s.

Aviation 13z Sunday through Thursday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Vfr conditions are expected at the terminals through the taf
period.

Relatively clear skies will be across the region
today, with just some cirrus around as high pressure moves into
the area. Mainly clear skies will continue through tonight. Fog
may develop in a few locations overnight tonight but confidence
is low and it has been left out of the tafs at this time.

Light winds this morning will become west to northwest by mid
morning at around 10 knots or less through this afternoon. A few
gusts around 15 knots are possible this afternoon. Winds will
subside again and become slightly more southwest this evening
before becoming light and variable overnight.

Outlook...

Monday... PredominatelyVFR. Isolated showers and storms could
develop late in the day and at night, mainly south and west of
phila terminals.

Tuesday... MainlyVFR. Isolated to perhaps scattered showers and
storms in the afternoon, especially across western terminals
(rdg and abe). Showers and storms could move into i-95 terminals
Tuesday night with a cold front approaching from the nw.

Wednesday... Showers likely with a chance of storms. Localized
sub-vfr restrictions a possibility with this activity. Improving
toVFR with showers ending from NW to SE late in the afternoon
and evening. Expect a wind shift from SW to NW to occur in wake
of fropa.

Thursday...VFR and light winds.

Marine
Tranquil conditions will continue across the area waters through
tonight. Seas will be around 1 to 2 feet. West to northwest winds
around 10 to 15 knots will start to turn more to the south southwest
this afternoon and evening. A few gusts around 20 knots are possible
through tonight.

Outlook...

Monday... Winds and seas below SCA thresholds.

Tuesday... SCA possible late afternoon and night with S winds
increasing to near 25 kt ahead of cold front. Building seas to
4-6 ft are forecast for the atlantic coastal waters.

Wednesday... Winds should decrease to below 25 kt but sca
conditions may continue into the morning as it may take longer
for seas in the coastal waters to drop below 5 ft.

Thursday... No marine hazards expected.

Rip currents
Winds will be northwest through this morning before turning to the
southwest this afternoon. The overall risk for today looks to be low
at both the delaware beaches and the new jersey shore but with
a more southwesterly flow developing a few of the more prone
locations, like lbi, may see a slightly increased risk through
this evening.

Tides coastal flooding
We will be watching the tidal departures closely for the Monday
evening high tide, as winds will once again shift to more southerly,
and astronomical tides should be relatively high thanks to the new
moon on Monday. At this point minor flooding is possible, though
some guidance continues to show water levels falling short of minor
flooding thresholds.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... None.

Synopsis... Klein
near term... Meola di spigna
short term... Meola
long term... Klein
aviation... Klein meola
marine... Klein meola
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACYN4 - 8534720 - Atlantic City, NJ 6 mi44 min 78°F 72°F1019.1 hPa
JCRN4 - Jacques Cousteau Reserve, NJ 13 mi44 min NW 2.9 77°F 1019 hPa62°F
CMAN4 - 8536110 - Cape May, NJ 35 mi44 min NNW 7 G 8.9 76°F 78°F1018.8 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 39 mi44 min NNW 8.9 G 12 73°F 1019.8 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 44 mi44 min NW 8.9 G 11 73°F 80°F1019.2 hPa

Wind History for Cape May, NJ
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G25
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Atlantic City, Atlantic City International Airport, NJ8 mi20 minNNW 610.00 miFair79°F62°F56%1018.9 hPa

Wind History from ACY (wind in knots)
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Last 24hr3Calm4W8W9W10W8W7W6SW4SW4SW5W7W7W8W5W7W6NW7NW6NW7NW8NW11N6
1 day agoS7S9S9S11
G21
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W4W5SW5SW5SW7W6W6W4W54N6N6
2 days agoE7E6E9
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G19
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Tide / Current Tables for Dock Thorofare, Risley Channel, New Jersey
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Dock Thorofare
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Sun -- 01:50 AM EDT     -0.18 feet Low Tide
Sun -- 04:50 AM EDT     Moonrise
Sun -- 06:15 AM EDT     Sunrise
Sun -- 07:49 AM EDT     4.35 feet High Tide
Sun -- 01:51 PM EDT     -0.24 feet Low Tide
Sun -- 07:08 PM EDT     Moonset
Sun -- 07:46 PM EDT     Sunset
Sun -- 08:10 PM EDT     5.41 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.1-0.20.31.32.43.54.24.33.931.90.80-0.20.31.42.7455.45.24.43.2

Tide / Current Tables for Atlantic City, Atlantic Ocean, New Jersey
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Atlantic City
Click for Map
Sun -- 12:50 AM EDT     -0.19 feet Low Tide
Sun -- 04:50 AM EDT     Moonrise
Sun -- 06:15 AM EDT     Sunrise
Sun -- 06:54 AM EDT     4.44 feet High Tide
Sun -- 12:51 PM EDT     -0.25 feet Low Tide
Sun -- 07:08 PM EDT     Moonset
Sun -- 07:15 PM EDT     5.52 feet High Tide
Sun -- 07:45 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.20.31.32.43.54.24.44.13.220.80-0.20.21.32.74.155.55.34.53.31.9

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Philadelphia/Mount Holly, PA (11,2,3,4)
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Ground Weather Radar Station Philadelphia, PA
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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.