Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.
|Sunrise 5:31AM||Sunset 8:34PM||Tuesday June 19, 2018 11:35 PM EDT (03:35 UTC)||Moonrise 11:07AM||Moonset 12:00AM||Illumination 42%|
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|ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 912 Pm Edt Tue Jun 19 2018 |
Tonight..N winds 5 to 10 kt. Waves 2 ft or less. Patchy fog after midnight with vsby 1 to 3 nm.
Wed..SE winds 5 to 10 kt. Waves 2 ft or less. Patchy fog early in the morning. A chance of showers late. Vsby 1 to 3 nm early in the morning.
Wed night..S winds 5 to 10 kt, becoming sw late. Waves 2 ft or less. Showers likely with a chance of tstms.
Thu..NE winds 5 to 10 kt. Waves 2 ft or less. A chance of showers early in the morning.
Thu night..E winds around 5 kt. Waves 2 ft or less.
Fri..E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 ft or less.
Fri night..E winds 10 to 15 kt. Waves 2 ft or less. A chance of showers.
Sat..SE winds 10 to 15 kt. Waves 2 ft or less. A chance of showers. A chance of tstms in the afternoon.
Sat night..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of tstms in the evening. A chance of showers.
Sun..W winds 5 to 10 kt. Waves 2 ft or less. A chance of showers.
Sun night..NW winds 5 to 10 kt. Waves 2 ft or less. A chance of showers. Winds and waves higher in and near tstms.
|ANZ400 912 Pm Edt Tue Jun 19 2018 |
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A cold front settles south of our area tonight as weak high pressure slides to the north. An area of low pressure tracks along the front and crosses our region Wednesday night into early Thursday. High pressure builds in Thursday night, then shifts offshore Friday. A warm front lifts across the region later Saturday, followed by a cold front during Sunday. High pressure should then build south into the region next Monday and Tuesday.
7 Day Forecast for Marine Location Near Eddystone , PAHourly EDIT Help
Area Discussion for - Philadelphia/Mount Holly, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kphi 200120|
area forecast discussion
national weather service mount holly nj
920 pm edt Tue jun 19 2018
A cold front settles south of our area this evening and stalls, then
weak high pressure slides to our north through tonight. An area of
low pressure tracks along the front and crosses our region Wednesday
night into early Thursday. High pressure builds in Thursday night,
then shifts offshore Friday. A warm front lifts across the region
later Saturday, followed by a cold front during Sunday. High
pressure should then build south into the region next Monday and
Near term until 6 am Wednesday morning
Cooler and dryer air continues to filter into much of new jersey
and eastern pennsylvania, and into northern portions of
delmarva. Surface dewpoints have fallen into the 50s across
much of the region, but should stay in the 60s across southern
portions of DELMARVA through the overnight.
Patchy fog possible, mainly along the coast and across parts of
the mountains to the north.
Lows tonight will range from the upper 50s in the poconos and
northern new jersey, and otherwise in the mid and upper 60s.
Short term 6 am Wednesday morning through 6 pm Wednesday
For Wednesday, the high pressure to our north builds offshore
of the northeast, which will allow return flow develop. The
front will remain to our south through the day, however, an area
of low pressure will develop along this front to our west
across the ohio river valley during the day, before sliding
eastward along the front toward our area. Meanwhile, a surface
trough is expected to develop north of this low, and become more
defined as it moves eastward across the area. The morning hours
on Wednesday may be mostly dry, but by the afternoon, the
surface trough and low pressure begin to move eastward while a
short wave vorticity impulse aloft moves eastward as well. This
should allow for scattered showers, and isolated thunderstorms
to develop across the area during the day. Highs on Wednesday
will be much cooler than they have been the last couple of days,
generally in the mid upper 70s-low 80s.
Long term Wednesday night through Tuesday
Wednesday night through Friday...
this period will start out active as a low pressure system
develops along a stalled frontal boundary over the mid
atlantic... Potentially bringing some heavy rain and storms for
Wednesday night. To start the period Wednesday evening, the
front will be situated close to the mason-dixon line with low
pressure beginning to take shape over eastern virginia. Expect
this low to track east across the DELMARVA through Wednesday
night. As this occurs, expect showers and storms to become
widespread across most of the area through Wednesday evening as
we include all but extreme northern areas in likely pops. Pwats
are progged to be over 2.25 inches and this combined with mu
capes of a few hundred j kg and sufficient low and upper level
forcing will mean showers storms have the potential to produce
very heavy rainfall. The one limiting factor is that the LLJ and
moisture flux convergence doesn't look to be as strong as it's
been for some recent events. That said, given any convection
with such high pwats, urban, small stream, and poor drainage
flooding will be possible and there is even the risk of flash
flooding. It's a little early to say with high confidence where
exactly the heaviest rain will occur but the overall threat for
significant rain and associated flooding issues appears to be
highest in the general vicinity of the mason- dixon line... So
across the delmarva, SE pa, and southern nj.
As the aformentioned low tracks off the coast, the rain showers
and any embedded storms will quickly come to an end Thursday
morning with clearing skies to follow. The remainder of the day
Thursday will feature breezy winds out of the north behind the
low with highs generally in the low to mid 80s but accompanied
by comfortable dew points.
Heading into Thursday night and Friday, high pressure will move
east across ny state into new england and will dominate our
weather bringing generally fair conditions. Skies will be mainly
clear Thursday night with lows mostly in the low to mid 60s
except 50s across the southern poconos and northern nj. This
will be followed by increasing clouds Friday ahead of the next
system with highs generally in the upper 70s to low 80s.
Friday night through Tuesday...
the pattern turns more active again over the weekend as a low
pressure system with its associated fronts affects the region.
This low will track from near kentucky late Friday north and
east toward the lower great lakes by late Saturday. Expect one
or more rounds of showers and storms to affect the area Friday
night into Saturday associated with the system's warm front.
Storms should be most widespread, at least initially, over
eastern pa. While it's a little early to get into forecast
details, the airmass will be warm and quite humid by Saturday
afternoon with temps mostly in the upper 70s to mid 80s and dew
points in the 60s to near 70. Depending on if any sunny breaks
develop ml capes could reach near or over 1000 j kg with deep
layer shear currently looking to be 30-50 knots so severe
weather could be a threat but again, it's still early to be
confident on details.
An initial pre-frontal trof should cross the area Saturday
evening followed by the actual cold front late Sunday or Monday
so this will keep chances for scattered shower storms going
through the weekend. That said, at this early juncture the|
airmass looks to be drier Sunday behind the lead trough so any
storms could be few and far between with an otherwise partly
sunny, warm day. This should result in temps a bit warmer than
Saturday but with lower humidity.
Some differences in the models by late weekend into early next
week as the gem is slower than the ECMWF and the GFS bringing
the cold front through. Gem doesn't bring it through until
Monday while. At this point leaning towards the faster solution
bringing it through late Sunday so we only mention slight chance
pops into Monday as otherwise high pressure should be building
in early next week.
Aviation 01z Wednesday through Sunday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.
Tonight...VFR conditions expected across the TAF sites through
tonight. Patchy fog is possible, mainly at krdg kabe kacy kmiv
in the pre-dawn hours Wednesday morning. Will carry tempo groups
in those tafs, but confidence is low.
Mainly north winds 5 kt or less, except kacy, which is south at
5 kt or less due to late day sea breezes. Winds will generally
become NE 5 kt or less, but mainly lgt vrb.
Wednesday...VFR conditions are expected to start the day and
likely to continue through at least the first half of the day.
Scattered showers may develop during the afternoon, which may
temporarily lower visibilities. Also, ceilings are expected to
lower through the day as cloud cover increases, and may lower to
MVFR by late afternoon early evening.
Winds will continue to shift to the southeast, then eventually
possibly south to southwest. Speeds will continue to be 5-10
knots or less.
Wednesday night... Restrictions likely as widespread showers and
embedded storms move through.
Thursday - Friday... Any lingering restrictions early Thursday
quickly give way toVFR which then persists through Friday.
Friday night - Saturday... Developing MVFR conditions are
probable as a warm front lifts across the area with a chance of
showers and thunderstorms. Southerly winds may gust up to 20
knots during the day.
Sunday... Scattered to isolated storms could bring brief
restrictions but otherwiseVFR.
Conditions expected to remain below advisory levels across all of
the waters tonight through Wednesday. Isolated scattered showers and
thunderstorms are possible on Wednesday, especially later in the day
which could lead to locally higher winds and waves.
Wednesday night - Thursday... Low pressure brings showers,
embedded storms Wednesday night into early Thursday which could
result in reduced visibilities over the waters. Northerly winds
behind the system could gust to SCA levels by late morning
Thursday behind the system.
Thursday night - Friday... The conditions are anticipated to be
below small craft advisory criteria.
Saturday... A warm front is forecast to lift north of the area
late. Southeast to south winds may gust to around 20 knots at
times. There is a chance of showers and thunderstorms.
Saturday night - Sunday... Continuing chances for showers and
storms with southerly winds shifting to SW and eventually wsw by
late Sunday. Gusts to around 20 knots will remain possible.
Seas look to be around 5 ft through this period.
there remains a low risk for enhanced rip currents through this
evening as seas remain 2-3 feet with a 6-8 second period.
Wednesday is expected to have a low risk for enhanced rip
currents again as seas will continue around 2-3 feet, and the
period remains around 6-8 seconds. The winds will be more
onshore Wednesday, but will be light enough that they are not
expected to cause an increase in the rip current risk other than
Phi watches warnings advisories
near term... Robertson mps
short term... Robertson
long term... Fitzsimmons
aviation... Fitzsimmons robertson mps
marine... Fitzsimmons robertson mps
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|
|MRCP1 - 8540433 - Marcus Hook, PA||7 mi||47 min||77°F||75°F||1011.1 hPa|
|PHBP1 - 8545240 - Philadelphia, PA||10 mi||53 min||80°F||74°F||1010.8 hPa|
|BDSP1||15 mi||47 min||79°F||76°F||1011.4 hPa|
|DELD1 - 8551762 - Delaware City, DE||24 mi||47 min||NNW 5.1 G 8||78°F||73°F||1011.3 hPa|
|RDYD1 - 8551910 - Reedy Point, DE||25 mi||47 min||77°F||77°F||1010.6 hPa|
|BDRN4 - 8539094 - Burlington, Delaware River, NJ||28 mi||59 min||Calm G 1.9||76°F||76°F||1011 hPa|
|NBLP1 - 8548989 - Newbold, PA||35 mi||47 min||Calm G 1.9||74°F||78°F||1011.7 hPa|
|CHCM2 - 8573927 - Chesapeake City, MD||35 mi||47 min||NNE 1.9 G 4.1||76°F||79°F||1011.4 hPa|
Wind History for Philadelphia, PA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Philadelphia, Philadelphia International Airport, PA||4 mi||41 min||N 9||10.00 mi||A Few Clouds||77°F||54°F||45%||1011.3 hPa|
|Philadelphia - Wings Field Airport, PA||19 mi||60 min||N 0||10.00 mi||Fair||72°F||55°F||57%||1012.5 hPa|
|Wilmington, New Castle County Airport, DE||20 mi||44 min||N 7||10.00 mi||Fair||74°F||55°F||52%||1011.4 hPa|
|Philadelphia, Northeast Philadelphia Airport, PA||22 mi||41 min||NNW 6||10.00 mi||Fair||76°F||57°F||52%||1011.7 hPa|
Wind History from PHL (wind in knots)
|1 day ago||S||S||S||S||S||S||S||SW||S||SW||SW||SW||SW||SW||SW||SW||SW|
|2 days ago||Calm||Calm||S||S||W||Calm||Calm||Calm||Calm||Calm||SW||SW||SE||E||W||SW||SW||SW||S||S||S||S |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Wanamaker Bridge |
Click for Map
Tue -- 12:42 AM EDT Moonset
Tue -- 01:06 AM EDT 0.43 feet Low Tide
Tue -- 05:32 AM EDT Sunrise
Tue -- 06:15 AM EDT 6.32 feet High Tide
Tue -- 12:07 PM EDT Moonrise
Tue -- 01:43 PM EDT 0.02 feet Low Tide
Tue -- 07:00 PM EDT 5.78 feet High Tide
Tue -- 08:32 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
Click for Map
Tue -- 12:41 AM EDT Moonset
Tue -- 01:58 AM EDT 0.01 knots Slack
Tue -- 03:57 AM EDT 2.14 knots Max Flood
Tue -- 05:31 AM EDT Sunrise
Tue -- 07:18 AM EDT -0.01 knots Slack
Tue -- 10:35 AM EDT -2.16 knots Max Ebb
Tue -- 12:06 PM EDT Moonrise
Tue -- 02:40 PM EDT 0.00 knots Slack
Tue -- 04:39 PM EDT 1.89 knots Max Flood
Tue -- 07:54 PM EDT -0.00 knots Slack
Tue -- 08:32 PM EDT Sunset
Tue -- 10:56 PM EDT -2.12 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
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 (23,6,7,8)(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.