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Marine Weather and Tides
Version 3.4 |
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 6:50AM | Sunset 6:55PM | Sunday September 24, 2017 6:57 PM EDT (22:57 UTC) | Moonrise 10:04AM | Moonset 8:44PM | Illumination 19% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 636 Pm Edt Sun Sep 24 2017 Tonight..SE winds around 5 kt. Waves 2 ft or less. Patchy fog late. Mon..E winds 5 to 10 kt. Waves 2 ft or less. Patchy fog early in the morning. Patchy fog late in the morning. Vsby 1 to 3 nm in the morning. Mon night..E winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. Tue..NE winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. A chance of showers. Tue night..NE winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. A chance of showers. Wed..NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. A chance of showers. Wed night..NE winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. A chance of showers. Thu..N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. A chance of showers early in the morning. Thu night..N winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. Fri..N winds 10 to 15 kt, becoming nw 5 to 10 kt in the afternoon. Waves 2 ft or less. Fri night..N winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. | ANZ400 636 Pm Edt Sun Sep 24 2017 Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will stay over our region tomorrow, before weakening Tuesday. Hurricane maria will track northward over the atlantic waters, approaching the coastal carolinas on Wednesday, then curving out to sea on Thursday as a cold front passes through the region. A second cold front may propagate through our region Friday into Saturday, before a large area of high pressure builds over the northeast. && |
7 Day Forecast for Marine Location Near Eddystone , PA
Hourly EDIT Helplocation: 39.86, -75.31 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 242209 afdphi area forecast discussion national weather service mount holly nj 609 pm edt Sun sep 24 2017 Synopsis High pressure will stay over our region tomorrow, before weakening Tuesday. Hurricane maria will track northward over the atlantic waters, approaching the coastal carolinas on Wednesday, then curving out to sea on Thursday as a cold front passes through the region. A second cold front may propagate through our region Friday into Saturday before a large area of high pressure builds over the northeast. Near term until 6 am Monday morning Another nice night is expected with mostly clear skies and light winds. There was a little fog around the rural areas last night and the will probably be more fog in these areas tonight. We will keep the patchy wording in the grids as before. Low temperatures will drop into the low 60s north and mid upper 60s elsewhere. Short term 6 am Monday morning through 6 pm Monday High pressure will remain over the area Monday. It will be a little more humid as the onshore flow will continue. Skies will be mostly sunny during the day. High temperatures will be a little cooler than today, but still above normal for late september. Highs will be in the upper 80s in most areas. Winds will again be light from the E or se. Long term Monday night through Sunday Tuesday and Wednesday... Surface high is expected to weaken through this time, however not as quickly as shown with previous model runs. Therefore, trimmed back pops across eastern pa and NW nj. However, kept a mention of showers across our coastal plains as we may have a few of the very outer rain bands of maria near the coast. Based on the latest forecast track of maria, all tropical storm force winds should stay well to the south of our region. Thursday... Models have generally trended faster with the cold front propagating through our region Wednesday night into early Thursday. In addition, there remains good model consensus that maria will make the sharp ene turn through this period heading much further out to sea. What that means for our region is that we should have breezy northwesterly winds behind the front. Models have backed off on precipitation chances with and just ahead of the front, so I lowered pops slightly, but given the moist marine layer that should be in place thanks to the onshore flow from the two previous days, think that showers are still possible. Friday through Sunday... Cooler air will settle in over the region. Temperatures through this period are likely to be near or slightly below normal (in stark contrast to the beginning of the week). One feature of note is a low digging southeast out of central canada towards the mid atlantic Friday into Saturday. At the surface, this would mean a second cold front could arrive in our region early in the weekend. The previous run of the ecmwf showed a very amplified solution with a mid level closed low almost becoming cutoff over our region through the weekend. The 12z run is much closer to the GFS solution showing a progressive pattern (albeit still closed low). This will be a major change from the large scale pattern we have now (trough over the western u.S. And ridge over the east), so hesitate to favor one solution over another given the large uncertainty. Thus, through this period, have gone with a blend of models and a slight chance of precip. Aviation 22z Sunday through Friday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. High pressure across the TAF sites today and tonight will keep good flying weather through the period. The only exception will be the possibility for some fog overnight mostly at the more rural locations. We have included a period with fog in the terminals except for kphl and kpne where chances of fog are lower. Once the fog diminishes Monday, moreVFR conditions with mostly clr skies are expected. Winds will be light from the E or se through Monday. Outlook... Tuesday and wedensday... MostlyVFR conditions expected. There is a chance for showers both days (if any showers move over a taf site, MVFR or lower conditions are possible). Northeasterly wind up to 10 kt possible. At the coast, including kacy, northeasterly winds of 15 to 20 mph with higher gusts will be possible. Wednesday night and Thursday... A cold front will bring a shift to northwesterly winds and a slight chance for showers. Otherwise, mostlyVFR conditions are expected. Friday... MostlyVFR conditions expected. Marine While winds will remain light tonight and Monday, seas will increase slowly as the swells associated with the offshore tropical systems continue. We will continue with the marine flags (small craft for hazardous seas) as previously lined up. Fair weather tonight and |
Monday. Outlook... Tuesday and Wednesday... An SCA will likely be needed for the entire period on the ocean waters as elevated seas due to swells associated hurricane maria will be observed through this time. Seas will gradually build to 8-11 feet by Wednesday. Gusts above 25 kt will be possible especially on the delaware coastal waters Wednesday. Elevated waves will be possible at the mouth of the delaware bay. Otherwise, winds and waves should stay below sca criteria on the bay. Thursday and Thursday night... A cold front will bring a shift to northwesterly winds and gusts above 25 kt likely for part of the period on the atlantic coastal waters. In addition, seas will likely still be elevated due to swells from maria. Friday... Winds and seas will be diminishing through the day, though it is uncertain how quickly they will diminish. Rip currents... we regret to inform that new jersey recorded its record 8th rip current related fatality yesterday, and yet another within an hour of low tide. The period of record dates back to 1996. Many rescues today..Despite swells only around 3-4 feet but the 13 second period from maria is causing the formation of dangerous rip currents. They are transitory but powerful channels of seaward moving water, especially noticeable during the lower half of the tide cycle as water trapped behind the bars cuts a narrow channel and rivers swiftly seaward through the surf zone. Since no lifeguards are on duty... A phone call about a distressed swimmer can easily become a recovery. Why risk it? Also... Rocks and jetties... No need to get knocked off the jetty by a breaking wave and put would-be rescuers in danger. Very dangerous surf conditions continue through much of the week and these will worsen considerably by Wednesday. Please do not go swimming in the rough surf and stay off rocks and jetties. No need to put would- be rescuers in danger. Please follow the advice of local officials. If you must go in the surf, please only go in to ankle deep. As for the details each day: today and Monday... A high risk for dangerous rip currents will continue for the rest of today and into Monday. Tuesday and Wednesday... This is likely to be the most dangerous period of the week as we are expecting the highest swells due to hurricane maria. The threat for the formation of dangerous rip currents will be high through this period. Thursday... Rough surf is likely to continue, thus it is likely that the high threat for the formation of dangerous rip currents will continue. Friday... Swells should begin to subside resulting in a decreased risk for rip currents, though it is likely to at least start the day as a moderate risk. Climate The following stations equaled their record for this date allentown-92, mount pocono-85, trenton-92, wilmington-92. High temperature record for today acy... 92(2010) phl... 95(1970) ilg... 92(2010 2017) abe... 92(1970 2017) ttn... 92(1970 2017) ged... 97(2010) rdg... 95(1970) mpo... 85(2010 2017) Monday acy... 91(1970) phl... 92(1970) ilg... 93(1970) abe... 92(1970) ttn... 92(1970) ged... 92(2010 and 1970) rdg... 92(1970) mpo... 85(1970) we will evaluate the monthly climate projection by 9pm. Phi watches warnings advisories Pa... None. Nj... High rip current risk until 11 pm edt this evening for njz014- 024>026. De... High rip current risk until 11 pm edt this evening for dez004. Md... None. Marine... Small craft advisory for hazardous seas until 6 am edt Tuesday for anz450>455. Synopsis... Johnson near term... O'hara short term... O'hara long term... Johnson aviation... Johnson o'hara marine... Johnson o'hara 608 climate... 608 |
Weather Reporting Stations
EDIT (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 | 39 min | 87°F | 76°F | 1016.2 hPa | |||
| PHBP1 - 8545240 - Philadelphia, PA | 10 mi | 39 min | 86°F | 74°F | 1015.8 hPa | |||
| BDSP1 | 15 mi | 39 min | 87°F | 1016.6 hPa | ||||
| DELD1 - 8551762 - Delaware City, DE | 24 mi | 39 min | SSE 6 G 9.9 | 81°F | 72°F | 1016.7 hPa | ||
| RDYD1 - 8551910 - Reedy Point, DE | 25 mi | 39 min | 82°F | 76°F | 1016.3 hPa | |||
| BDRN4 - 8539094 - Burlington, Delaware River, NJ | 28 mi | 81 min | 88°F | 74°F | 1016.1 hPa | |||
| NBLP1 - 8548989 - Newbold, PA | 35 mi | 39 min | SSE 1 G 1.9 | 85°F | 75°F | 1016.9 hPa | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 35 mi | 39 min | WNW 2.9 G 2.9 | |||||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 39 mi | 39 min | SE 8 G 9.9 | 77°F | 74°F | 1016.6 hPa | ||
| 44057 - Susquehanna, MD | 46 mi | 27 min | WSW 1.9 G 3.9 | 84°F | 1016.7 hPa |
Wind History for Philadelphia, PA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Philadelphia, Philadelphia International Airport, PA | 4 mi | 63 min | ESE 5 | 10.00 mi | A Few Clouds | 88°F | 64°F | 45% | 1016.1 hPa |
| Philadelphia - Wings Field Airport, PA | 19 mi | 82 min | SE 3 | 10.00 mi | Fair | 86°F | 64°F | 49% | 1017.3 hPa |
| Wilmington, New Castle County Airport, DE | 20 mi | 66 min | SE 4 | 10.00 mi | Fair | 89°F | 64°F | 43% | 1016.5 hPa |
| Philadelphia, Northeast Philadelphia Airport, PA | 22 mi | 63 min | ENE 4 | 10.00 mi | Fair | 89°F | 66°F | 47% | 1016.7 hPa |
Wind History from PHL (wind in knots)
| 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | |
| Last 24hr | N | Calm | SW | Calm | Calm | NW | Calm | N | N | Calm | N | N | N | N | N | N | E | E | E | E | E | E | SE | |
| 1 day ago | N | NW | N | NW | N | N | NW | N | N | N | NW | N | N | N | N | N | N | N | N G16 | N | NE G15 | N | N | N |
| 2 days ago | NE | E | E | Calm | E | NE | N | N | N | N | N | N | N | N | N | N | NW | NW | NW | NW | NW | N | N |
Tide / Current Tables for Wanamaker Bridge, Darby Creek, Pennsylvania
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Wanamaker Bridge Click for Map Sun -- 04:24 AM EDT 5.85 feet High Tide Sun -- 06:50 AM EDT Sunrise Sun -- 11:03 AM EDT Moonrise Sun -- 11:34 AM EDT 0.65 feet Low Tide Sun -- 04:49 PM EDT 6.00 feet High Tide Sun -- 06:54 PM EDT Sunset Sun -- 09:44 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 1 | 2.5 | 4 | 5.1 | 5.8 | 5.7 | 4.9 | 3.9 | 3 | 2.2 | 1.5 | 0.8 | 0.8 | 2 | 3.7 | 4.9 | 5.7 | 6 | 5.5 | 4.5 | 3.6 | 2.8 | 2 | 1.2 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of Data| Philadelphia Click for Map Sun -- 12:12 AM EDT 0.00 knots Slack Sun -- 01:56 AM EDT 1.44 knots Max Flood Sun -- 05:15 AM EDT -0.00 knots Slack Sun -- 06:50 AM EDT Sunrise Sun -- 08:00 AM EDT -1.78 knots Max Ebb Sun -- 11:02 AM EDT Moonrise Sun -- 12:24 PM EDT 0.00 knots Slack Sun -- 02:14 PM EDT 1.56 knots Max Flood Sun -- 05:33 PM EDT -0.00 knots Slack Sun -- 06:53 PM EDT Sunset Sun -- 08:16 PM EDT -1.70 knots Max Ebb Sun -- 09:43 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -0.2 | 1 | 1.4 | 1.2 | 0.9 | 0.3 | -0.8 | -1.6 | -1.8 | -1.6 | -1.3 | -0.9 | -0.4 | 0.7 | 1.5 | 1.3 | 0.9 | 0.5 | -0.5 | -1.4 | -1.7 | -1.6 | -1.4 | -1.1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of Mid-Atlantic EDIT  |
Wind Forecast for Philadelphia/Mount Holly, PA (18,4,5,8)
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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. |