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Marine Weather and Tides
Version 3.4 |
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% |  |
Marine Forecasts
EDIT (on/off) Help| 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 , 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 200120 afdphi area forecast discussion national weather service mount holly nj 920 pm edt Tue jun 19 2018 Synopsis 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 Tuesday. 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. Outlook... 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. Marine 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. Outlook... 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. Rip currents... 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 local enhancements. Phi watches warnings advisories Pa... None. Nj... None. De... None. Md... None. Marine... None. Synopsis... Fitzsimmons near term... Robertson mps short term... Robertson long term... Fitzsimmons aviation... Fitzsimmons robertson mps marine... Fitzsimmons robertson mps |
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 | 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
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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 | 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)
| 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 | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | |
| Last 24hr | SW | SW | SW | W | W | W | W | W | NW | NW | N | N | N G18 | NW | NW G14 | NW | NW | NW | N G18 | N | N | NW | N G19 | N |
| 1 day ago | S | S | S | S | S | S | S | SW | S | SW | SW | SW | SW | SW | SW | SW | SW G18 | SW G20 | SW | S | S | SW | W | S |
| 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 |
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 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 |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 1.1 | 0.4 | 1.1 | 2.9 | 4.6 | 5.7 | 6.3 | 6.1 | 5.3 | 4.4 | 3.5 | 2.6 | 1.5 | 0.4 | 0.1 | 1.3 | 3 | 4.3 | 5.3 | 5.8 | 5.4 | 4.7 | 3.9 | 3.1 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of Data| Philadelphia 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 |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -1.7 | -1.2 | 0 | 1.6 | 2.1 | 1.8 | 1.4 | 0.4 | -0.9 | -1.8 | -2.1 | -2.1 | -1.9 | -1.7 | -1 | 0.5 | 1.7 | 1.9 | 1.7 | 1.1 | -0.1 | -1.3 | -1.9 | -2.1 |
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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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (23,6,7,8)
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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. |