Marine Weather and Tides
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 6:35AM||Sunset 5:45PM||Saturday February 24, 2018 10:41 AM EST (15:41 UTC)||Moonrise 1:05PM||Moonset 2:55AM||Illumination 69%|
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|ANZ338 NEw York Harbor- 951 Am Est Sat Feb 24 2018 |
.small craft advisory in effect from late tonight through Sunday afternoon...
Today..NW winds around 5 kt. Waves 1 ft or less. Slight chance of rain late this morning, then chance of rain early this afternoon. Rain late.
Tonight..NE winds 5 to 10 kt, becoming E 15 to 20 kt with gusts up to 25 kt after midnight. Waves 1 ft or less, then around 2 ft after midnight. Rain. Vsby 1 to 3 nm after midnight.
Sun..E winds 15 to 20 kt with gusts up to 30 kt, becoming ne 5 to 10 kt in the afternoon. Waves 2 to 3 ft. Rain. Vsby 1 to 3 nm.
Sun night..NW winds around 5 kt. Waves 2 to 3 ft.
Mon..NW winds around 5 kt. Waves 1 ft or less.
Mon night..NW winds 5 to 10 kt. Waves 1 ft or less.
Tue..NW winds 5 to 10 kt, becoming sw in the afternoon. Waves 1 ft or less.
Tue night..SW winds 5 to 10 kt. Waves 1 ft or less.
Wed..S winds 5 to 10 kt. Waves 1 ft or less.
Wed night..SE winds 5 to 10 kt. Waves 1 ft or less. Chance of rain.
|ANZ300 951 Am Est Sat Feb 24 2018 |
Synopsis for the long island waters and new york harbor.. Weak low pressure tracks across the region late today into this evening. A warm front moves towards the region tonight, with a frontal system affecting the region Sunday. High pressure builds from the midwest Sunday night and remains in control through the middle of next week. A low pressure system may approach for the end of the week.
7 Day Forecast for Marine Location Near Madison Park, NJHourly EDIT Help
Area Discussion for - Philadelphia/Mount Holly, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kphi 241457|
area forecast discussion
national weather service mount holly nj
957 am est Sat feb 24 2018
A warm front will move slowly northward tonight into Sunday. A
low pressure system will cross to the north of our area with its
attendant cold front moving through Sunday night. High pressure
will build into the region through midweek. A backdoor cold
front will drop down through the region on Wednesday, followed
by an area of low pressure crossing the area Thursday and
perhaps intensifying along the coast early Friday.
Near term until 6 pm this evening
The primary forecast challenges today will be lingering fog
across portions of far southern nj and delmarva, the extent of
precipitation moving in from the west and high temperatures.
Indications are that fog will continue into the early afternoon
from CAPE may county into the southern half of delaware and the
eastern shore of maryland. We will extend the special weather
statement, as visibilities have not dipped below 1 4 mile.
Precipitation will initially be concentrated along the pa
turnpike into early afternoon as drier air has worked in just
north of this area, as evidenced by the Sun breaking out this
morning. As the atmosphere gradually saturates, the precip
will fill in north of this area later in the afternoon,
especially north of i-78.
Temperature-wise, no major changes. Areas mainly north of the
pa turnpike did see an upward bump this morning with the sun
breaking out but will soon cloud over, so this should not have
a big impact on the forecast.
several changes were made to the forecast today. Fog is getting
dense in chester county and the maryland eastern shore. Have
issued a dense fog advisory through 8 am for these areas, and
there is at least some chance the advisory may need to be
carried eastward into delaware given short-term model forecasts
and recent trends in dov ged surface observations. Visibility
should improve by mid to late morning, but patchy fog and even
some drizzle look to remain through much of the day across the
This leads to concern number two, which is the forecast highs today.
Inherited forecast simply looks too warm for the given pattern.
Despite potential for rising cloud bases (albeit gradually) during
the day, the overcast will very likely stick around. Though it has
been a warm february, it is still february -- and with my
pessimistic sky forecast today, I am awfully skeptical temperatures
will reach the upper 50s in portions of SE pa S nj. Generally, i
lowered temperatures 3-5 degrees across the area, and I am wondering
if this is enough, especially if this morning's observations agree
with the colder nam. Forecast temps may require more fine-tuning in
future updates, but I felt that starting the trend downward was
Several midlevel perturbations move northeastward into the northern
mid-atlantic today, and with favorable positioning of the northern-
stream 250-mb jet MAX (right-entrance region dynamics in play)
combined with low-level isentropic ascent along north of a
baroclinic zone stretching zonally across the region, periodic bouts
of rain look to occur in the CWA beginning this afternoon,
especially north of the mason-dixon line. There is still some
variability in timing of the precipitation, so I kept hourly pops in
the 50-80 percent range for the afternoon until there is more solid
agreement amongst the hi-res models. Nevertheless, rain is a pretty
good bet in pa nj this afternoon with diminishing chances in
southern md de. QPF is generally a quarter inch or less through 00z
Sunday, though amounts may be a little higher than that in the
poconos and lehigh valley if the more aggressive models are
Short term 6 pm this evening through 6 am Sunday
One round of rain should be diminishing and moving away from the
region during the evening hours, but conditions will likely once
again be favorable for low clouds, fog, and drizzle during this
time. Trended pops downward during the evening hours, but maintained
categorical pops after midnight as the next round of rain is
expected to move in. Kept mention of fog through the night, but
generally kept drizzle confined to the evening hours, as steadier
rain is more likely after midnight, especially north of the mason-
This next round of rain will occur as yet another vort max
approaches the region in midlevel southwesterly flow between 06z and
12z Sunday. Isentropic ascent poleward of the quasi-stationary
baroclinic zone will allow for precipitation to break out again
(with help from the steady 250-mb jet MAX to our north). The
enhanced ascent provided by the stronger vort max, the slowly
poleward-moving warm front, and the considerable upper-level
divergence aided by the jet MAX will likely lead to more formidable
rainfall totals during this period. Generally, amounts should be
approaching a half inch to an inch north of the mason-dixon line by
night's end with lighter amounts to the south. Fairly decent
agreement among hi-res models on qpf, so confidence is slightly
Temperatures will not fall too much as the warm front makes its move
(slowly) northward, overcast conditions continue, and warm advection
curtails nocturnal cooling. Forecast lows are in the mid to upper
30s in the poconos and northwest new jersey to the mid to upper 40s
southeast of the fall line. Will need to keep an eye on temperatures
in the poconos, as models tend to have a warm bias in this area
north of warm fronts, and even a couple degrees cooler could mean at
least a chance for some isolated slick spots. For now, chances are
too low for mention.
Long term Sunday through Friday
A progressive mid-level flow pattern will provide changeable weather
for the Sunday through Friday time period, with normal to slightly
above normal temperatures through most of the period.
A warm front associated with a low pressure system moving NE through
the great lakes region will lift north Sunday morning before its
associated cold front pushes east during the afternoon and evening
hours. The passage of this cold front will bring an end to any
lingering rain and rain showers. As precipitation from this system
ends Sunday night,rainfall totals are still expected to range
between 1 and 2 inches. This will cause ponding of water on roadways
and in poor drainage areas, and rises on small stream, but no
significant stream and river flooding is anticipated at this time,
especially given the longer duration of the event. Please see hydro
High pressure from the tennessee river valley is then expected to
build east, bringing dry weather to the region from late Sunday
night through most of Wednesday. Cooler temperatures are expected
Monday into Tuesday with a northwesterly flow (but still above
normal), followed by warmer temperatures on Wednesday as a
southwesterly flow once again establishes itself over the area.
Another cold front is expected to cross the area Wednesday night but
with limited moisture, precipitation amounts will be light. A
potentially more significant rain storm could move in later Thursday
and Friday as low pressure develops near the mid-atlantic coast.
Some light snow is even possible on Friday in the far north with a
northwest flow as the system moves NE away from the area.
Aviation 15z Saturday through Wednesday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.
Today... Ifr to lifr conditions in low clouds and fog were
beginning to lift this morning, albeit temporarily at some|
locations. Still some uncertainty with regard to timing the
improvement in CIGS vsbys with MVFR or evenVFR possible this
afternoon. The exception will be abe and rdg, where periods of
rain this afternoon should maintain MVFR ceilings. Winds
becoming northeast under 10 kts. Moderate confidence.
Tonight... Prolonged sub-vfr conditions likely as fog drizzle are
expected this evening followed by steadier rain after midnight.
Winds generally east or northeast under 10 kts. Moderate confidence.
Sunday... Ifr conditions expected with limited improvement
through the day. Confidence is low that we will return toVFR during
the day. East to southeast winds will become southwest to west by
the afternoon. Moderate confidence.
Sunday night... Improving toVFR through the night. Rain showers will
taper off through Sunday evening and conditions are expected to
improve. High confidence.
Monday through Tuesday...VFR conditions expected. West to
northwest winds becoming gusty to around 20 knots on Monday.
Wednesday...VFR conditions expected. West to southwest winds,
generally around 10 knots or less, becoming more south to
southeast late. High confidence.
Generally sub-advisory winds seas expected through this evening.
However, winds will begin to increase on the northern central nj
coastal waters late tonight as east to northeast winds begin to
crank up in response to an approaching storm system. Have issued a
small craft advisory for these areas beginning at 3 am Sunday.
Visibility restrictions are expected to continue through this
evening for delaware bay and the atlantic coastal waters of
southern new jersey and delaware, so the dense fog advisory was
extended through 7 pm. Another round of dense fog is possible
Rain chances will increase this afternoon and tonight, especially
off the nj coast.
Saturday night... Sub-advisory conditions are expected on the
Sunday and Sunday night... Seas are expected to build and exceed
5 feet on the ocean on Sunday. Winds also pick up through the
day Sunday with gusts of 25 to 30 knots possible. Conditions will
improve late Sunday night. A small craft advisory has been
Monday through Wednesday... Sub-advisory conditions are expected
on the area waters.
Periods of rain through the weekend could result in minor and
poor drainage flooding. The heaviest rain is expected Saturday
night and Sunday, when up to additional inch of rain will fall.
By the time the rain ends Monday morning, the region will have
received between 1 and 2 inches of rain since Thursday, with the
highest amounts falling over the northern third of the forecast
area. By Sunday night and Monday, there will be rises on areas
rivers and streams, with some possibly approaching bankful.
Of note will be how much rain falls over the susquehanna, as
there is the potential for inconvenience flooding below the
conowingo dam on Monday.
**top 3 warmest february on record and top 10 wettest february
february projected climate ranking as of noon today-Saturday feb 24,
based on our mid shift fcst through the 28th and mins this Saturday
morning; and for rainfall, amounts 1201 am today. Rdg and ttn not
included due to too much missing data.
Abe #3 warmest 38.0 or 7.3f warmer than the 30.7 norm.
acy #1 warmest 42.7 or 7.4f warmer than the 35.3 norm.
ilg #3 warmest 41.3 or 6.3f warmer than the 35.0 norm.
phl #3 warmest 42.5 or 6.8f warmer than the 35.7 norm.
water equivalent february pcpn
phl ranked #10 with 5.30". An additional .50 would raise to #5.
All time 6.87-1896
ilg ranked #8 with 5.48". An additional .50 would raise to #5
all time 7.02-1979
abe ranked #13 with 4.47". An additional .50 would raise to #5.
All time 7.62-2008
acy ranked #2 with 6.12". Wettest is 6.50-2010. Our expectation
still is that acy will exceed the previous all time record rainfall
for february, by the end of the weekend. It could be a close
Phi watches warnings advisories
Marine... Small craft advisory from 7 am Sunday to 7 am est Monday for
Dense fog advisory until 7 pm est this evening for anz430-431-
Small craft advisory from 4 am Sunday to 7 am est Monday for
near term... Cms franck
short term... Cms
long term... Miketta
aviation... Cms franck miketta
marine... Cms franck miketta
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|SDHN4 - 8531680 - Sandy Hook, NJ||14 mi||42 min||WNW 4.1 G 5.1||46°F||42°F||1022.4 hPa (-0.6)|
|MHRN6||15 mi||42 min||SSW 2.9 G 6|
|BGNN4 - 8519483 - Bergen Point West Reach, NJ||15 mi||42 min||49°F||42°F||1021.3 hPa (-0.8)|
|ROBN4 - 8530973 - Robins Reef, NJ||19 mi||42 min||W 5.1 G 7||48°F||1022 hPa (-0.6)|
|BATN6 - 8518750 - The Battery, NY||23 mi||42 min||46°F||40°F||1021.8 hPa (-0.8)|
|44065 - Entrance to New York Harbor||31 mi||32 min||WSW 5.8 G 5.8||42°F||39°F||1021.6 hPa||41°F|
|NBLP1 - 8548989 - Newbold, PA||33 mi||42 min||Calm G 1||49°F||42°F||1022.2 hPa (-0.4)|
|KPTN6 - 8516945 - Kings Point, NY||37 mi||42 min||N 1 G 2.9||48°F||39°F||1021.9 hPa (-0.8)|
|BDRN4 - 8539094 - Burlington, Delaware River, NJ||40 mi||66 min||47°F||42°F||1021.8 hPa|
Wind History for Sandy Hook, NJ(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Newark, Newark International Airport, NJ||20 mi||51 min||NW 4||10.00 mi||Mostly Cloudy||51°F||43°F||74%||1021.3 hPa|
|Belmar-Farmingdale, NJ||20 mi||46 min||W 4||10.00 mi||A Few Clouds||51°F||44°F||77%||1022.6 hPa|
|Somerville, Somerset Airport, NJ||24 mi||49 min||N 0||10.00 mi||Overcast||49°F||44°F||83%||1021.4 hPa|
Wind History from EWR (wind in knots)
|1 day ago||NE||NE||NE||NE||NE||N||N||NE||NE||E||NE||NE||NE||NE||NE||NE||NE||NE||NE||NE||NE||E||NE||NE|
|2 days ago||SW||SW||SW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Cheesequake Creek |
Click for Map
Sat -- 01:55 AM EST Moonset
Sat -- 02:04 AM EST 5.27 feet High Tide
Sat -- 06:38 AM EST Sunrise
Sat -- 09:04 AM EST 0.35 feet Low Tide
Sat -- 12:05 PM EST Moonrise
Sat -- 02:46 PM EST 4.48 feet High Tide
Sat -- 05:42 PM EST Sunset
Sat -- 09:09 PM EST 0.19 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Bayonne Bridge |
Click for Map
Sat -- 01:55 AM EST Moonset
Sat -- 02:11 AM EST -0.00 knots Slack
Sat -- 04:58 AM EST -1.38 knots Max Ebb
Sat -- 06:37 AM EST Sunrise
Sat -- 09:24 AM EST 0.00 knots Slack
Sat -- 11:44 AM EST 1.62 knots Max Flood
Sat -- 12:04 PM EST Moonrise
Sat -- 02:46 PM EST -0.00 knots Slack
Sat -- 05:38 PM EST -1.29 knots Max Ebb
Sat -- 05:42 PM EST Sunset
Sat -- 09:31 PM EST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Mid-Atlantic EDIT
Wind Forecast for Philadelphia/Mount Holly, PA (10,2,3,4)(on/off)  Help
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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 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.