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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 5:51AM | Sunset 8:22PM | Monday July 24, 2017 4:54 PM EDT (20:54 UTC) | Moonrise 6:12AM | Moonset 8:21PM | Illumination 2% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 347 Pm Edt Mon Jul 24 2017 Tonight..NE winds around 5 kt, becoming se around 5 kt late this evening, then becoming W after midnight, becoming nw 10 to 15 kt late. Waves 2 ft or less. A slight chance of showers and tstms early this evening, then a chance of showers late this evening and early morning. Tue..NW winds 10 to 15 kt, becoming N 5 to 10 kt in the afternoon. Waves 2 ft or less. Tue night..NE winds 5 to 10 kt. Waves 2 ft or less. Wed..E winds 5 to 10 kt. Waves 2 ft or less. Wed night..SE winds 5 to 10 kt. Waves 2 ft or less. Thu..S winds 5 to 10 kt. Waves 2 ft or less. Thu night..S winds around 10 kt. Waves 2 ft or less. A chance of showers. Fri..W winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms. Fri night..N winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms. Sat..NE winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms in the morning. Sat night..NE winds 5 to 10 kt. Waves 2 ft or less. Winds and waves higher in and near tstms. | ANZ400 347 Pm Edt Mon Jul 24 2017 Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A cold front will move slowly south across our region this evening and offshore tonight. A broad high pressure system extending from the great lakes into eastern canada will gradually build southeast into our area through Wednesday. As this high slides offshore late Wednesday, a warm front will move through our region on Thursday, followed by another slow moving cold front on Friday. High pressure is expected to make a return this weekend. |
7 Day Forecast for Marine Location Near Millbourne borough, PA
Hourly EDIT Helplocation: 39.96, -75.18 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 242031 afdphi area forecast discussion national weather service mount holly nj 431 pm edt Mon jul 24 2017 Synopsis A cold front will move slowly south across our region this evening and offshore tonight. A broad high pressure system extending from the great lakes into eastern canada will gradually build southeast into our area through Wednesday. As this high slides offshore late Wednesday, a warm front will move through our region on Thursday, followed by another slow moving cold front on Friday. High pressure is expected to make a return this weekend into the beginning of the work week. Near term until 6 am Tuesday morning An ef2 tornado has been confirmed near stevensville, maryland. A preliminary public information statement (pns) has been issued. More information will be added once the survey team returns to the office. Convection is tricky for this evening as some areas have remained clouded up today and are pretty stable, mainly across northern new jersey. Areas that have seen some Sun have had the chance to destabilize a bit and this may contribute to possibility of some stronger storms developing in our area. Scattered showers and thunderstorms are developing to the west of the area this afternoon. These storms will continue to move to the east and into our area this afternoon and evening. Some of the storms may be strong and with a marginal risk across much of the area, some storms may become severe. Storms should move fairly quickly with gusty winds and brief heavy rainfall. Clouds will fill in tonight behind the frontal boundary and some lingering showers may remain into the morning, mainly across the northern parts of the forecast area. With clouds over the air, it will again be mild but should feel cooler as some drier air starts to make its way into our area. Lows will be in the mid to upper 60s from i-78 and north and in the low to mid 70s to the south of i-78. Short term 6 am Tuesday morning through 6 pm Tuesday Another cloudy day is expected across the forecast area. Easterly flow will keep us cool and highs are expected to remain below normal. Upper 60s to mid 70s across the poconos and NW new jersey with upper 70s to mid 80s from about the i-78 corridor and points south. With the boundary exiting the region, much needed drier air will filter in and we should be free of the extra humid conditions we have had lately. Showers may linger through the morning hours but as high pressure build into the region, expect dry conditions through the afternoon. Long term Tuesday night through Monday One mid-level trough exits the east coast Tuesday night, with a brief zonal flow and some short wave ridging for Wednesday, followed by continued troughiness through the end of the long term period. A frontal system in the Thursday thru Friday time frame features the greatest chance of sensible weather, in terms of increased humidity, and the chance for showers and thunderstorms. This front will slow as it moves offshore, and stall to our south through the weekend into early next week, as waves of low pressure traverse it. All of the available guidance keeps our region dry in the Saturday thru Monday period, but lingering cloudiness is possible, especially south jersey into delmarva. In addition, if the guidance slows the southward progress of this feature, this could result in a more pessimistic forecast for the aforementioned area. Showers and thunderstorms with heavy downpours and gusty winds are possible Thursday into Friday. It's still too early to nail down the spatial and temporal details, as the GFS is much more progressive with the front compared to the euro, so there is low confidence due to the uncertainty. In fact, the GFS event window would be Thursday into Thursday night, with the euro window is centered on Friday. Nevertheless, effective bulk shear values rise to near 40 knots, while surface-based CAPE is in excess of 2.0 kj across portions of the area. In addition, the front slows as it moves trough or area, while precipitable water values rise to around 2.0 inches. These indicators point to some potential for strong thunderstorms and heavy rainfall in the Thursday and Friday period, and we have mentioned this in the hazardous weather outlook. Temperature-wise, slightly below normal temperatures on Wednesday rebound to at or slightly above average from Thursday thru Friday. Average to slightly below average temperatures are expected in the post-frontal air mass on Saturday, with a moderation to near normal in the Sunday thru Monday time frame. In fact, Thursday and Friday are shaping up to be the warmest days, with temperatures well into the 80s to near 90. The only exception may be closer to the coast, where a prolonged onshore flow may develop over the weekend into early next week, keeping temperatures cooler. Finally, depending on the extent of the aforementioned onshore flow, astronomical tides are much lower over the weekend into early next week as we move away from the new moon. This should limit the potential for coastal flooding. Aviation 21z Monday through Saturday The following discussion is for kphl, kpne, kttn, kabe, krdg, |
kilg, kmiv, kacy and surrounding areas. Conditions areVFR at the terminals and are expected to remain so through this evening. Scattered showers and thunderstorms will move into the area from the west and impact the terminals as a cold front starts to move through the region. Best timing for storms will be between 21z-00z (krdg kabe) to 02z-05z (kmiv kacy). Expect ifr conditions in any showers storms that move across the terminals, otherwiseVFR will prevail. Conditions will deteriorate further tonight once the rain has moved out. Expect ceilings to start dropping to around 1500-2500 feet, with some locations falling below 1000ft by late tonight early Tuesday morning. Additionally, some fog may form overnight and visibilities will drop, mainly after midnight. Winds will become light and variable through the overnight period. Tuesday... MVFR ifr conditions will prevail through much of the taf period. Guidance shows that some clearing toVFR may occur by early afternoon but confidence is low that things will clear out that quickly. Easterly flow will remain at the terminals with winds around 10 knots or less. Outlook... . There is some potential for MVFR in low clouds associated with a frontal system from Thursday into Friday. This potential may linger into Saturday in acy and miv as the southward progression of the front slows. In addition, any showers or thunderstorms during this time frame may briefly reduce ceilings and visibility's to ifr. Otherwise,VFR for the remainder of the period. Marine Small craft advisory for hazardous seas is in effect for our northern new jersey coastal waters through 6pm. Seas are hovering around 5 feet at buoy 44065 but the trend is for the seas to start lowering as we head into this evening. A boundary across the region has the winds blowing in different directions across our areas waters. To the north of the boundary, winds are northerly around 10 to 15 knots. To the south of the boundary, winds are west to southwest around 10 knots. A cold front will cross the region tonight and winds should become westerly briefly before turning more north and then east on Tuesday. There is another chance for some showers and thunderstorms later this evening over the area waters, with locally higher seas and gusty winds. Outlook... Wednesday through Saturday... A small craft advisory may be needed on Thursday and Friday. Rip currents... a moderate risk for rip currents remains in effect through this evening for the delaware and new jersey beaches. A low risk of rip currents is currently expected for the delaware and new jersey beaches on Tuesday. However, an underlying longer period swell may raise the rip current risk to moderate along the new jersey coast. Tides coastal flooding There is coastal flood advisory in effect for this evening's high tide along the new jersey and delaware coasts. We do not anticipate minor flooding in delaware bay. While surface wind turned offshore during on Monday, it is expected to become onshore again this evening, especially along the new jersey coast. Conditions may be a bit marginal for delaware. Equipment Dew point readings at kdov continue to measure too high compared to surrounding locations and should be treated as unrepresentative of the area. Phi watches warnings advisories Pa... None. Nj... Coastal flood advisory from 9 pm this evening to 2 am edt Tuesday for njz012>014-020-022>027. De... Coastal flood advisory from 9 pm this evening to 2 am edt Tuesday for dez003-004. Md... None. Marine... Small craft advisory for hazardous seas until 6 pm edt this evening for anz450. Synopsis... Franck near term... Meola short term... Meola long term... Franck aviation... Franck meola marine... Franck meola tides coastal flooding... Franck equipment... |
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 |
| PHBP1 - 8545240 - Philadelphia, PA | 3 mi | 54 min | 86°F | 82°F | 1008.4 hPa (+0.0) | |||
| BDSP1 | 6 mi | 54 min | 82°F | 1009.2 hPa (+0.0) | ||||
| MRCP1 - 8540433 - Marcus Hook, PA | 16 mi | 54 min | 86°F | 1008.7 hPa (+0.0) | ||||
| BDRN4 - 8539094 - Burlington, Delaware River, NJ | 18 mi | 78 min | 77°F | 83°F | 1009.1 hPa | |||
| NBLP1 - 8548989 - Newbold, PA | 26 mi | 54 min | S 4.1 G 7 | 78°F | 82°F | 1010 hPa (+0.0) | ||
| DELD1 - 8551762 - Delaware City, DE | 34 mi | 54 min | W 5.1 G 7 | 86°F | 83°F | 1009.1 hPa (+0.0) | ||
| RDYD1 - 8551910 - Reedy Point, DE | 35 mi | 54 min | 86°F | 85°F | 1008.8 hPa (+0.0) | |||
| CHCM2 - 8573927 - Chesapeake City, MD | 45 mi | 54 min | W 2.9 G 8 | 85°F | 87°F | 1009.5 hPa (+0.0) | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 46 mi | 54 min | NW 6 G 7 | 84°F | 82°F | 1009.1 hPa (+0.4) | ||
| JCRN4 - Jacques Cousteau Reserve, NJ | 48 mi | 84 min | NW 4.1 | 85°F | 1009 hPa | 72°F |
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 | 6 mi | 60 min | SSE 5 | 10.00 mi | Partly Cloudy | 85°F | 66°F | 55% | 1008.9 hPa |
| Philadelphia, Northeast Philadelphia Airport, PA | 12 mi | 60 min | ENE 3 | 10.00 mi | Fair | 85°F | 68°F | 57% | 1009.4 hPa |
| Philadelphia - Wings Field Airport, PA | 13 mi | 59 min | N 0 | 10.00 mi | Partly Cloudy | 81°F | 69°F | 70% | 1009.8 hPa |
| Mount Holly, South Jersey Regional Airport, NJ | 18 mi | 60 min | NE 3 | 10.00 mi | Fair | 82°F | 71°F | 69% | 1009.1 hPa |
Wind History from PHL (wind in knots)
| 5 PM | 6 PM | 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 | |
| Last 24hr | E | SE | SE | E | NE | E | SE | E | E | NE | NE | E | E | E | E | S | W | SW | NW G15 | N | N | NW G17 | NW G14 | S |
| 1 day ago | S | S | E | Calm | SW | SW | W | SW | SW | W | W | W | W | W | Calm | N | N | E | E | E | E | E | E | |
| 2 days ago | SW | W | SW | SW | SW | SW | S | SW | Calm | SW | SW | S | NW | Calm | NE | NE | E | E | E | Calm | S | W | SW |
Tide / Current Tables for Market Street Bridge, Schuylkill River, Pennsylvania
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Market Street Bridge Click for Map Mon -- 02:15 AM EDT 7.43 feet High Tide Mon -- 05:52 AM EDT Sunrise Mon -- 07:12 AM EDT Moonrise Mon -- 09:46 AM EDT 0.01 feet Low Tide Mon -- 02:47 PM EDT 6.39 feet High Tide Mon -- 08:21 PM EDT Sunset Mon -- 09:21 PM EDT Moonset Mon -- 09:54 PM EDT 0.21 feet Low Tide 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 |
| 5.1 | 6.5 | 7.4 | 7.2 | 6.3 | 5.4 | 4.4 | 3.3 | 1.9 | 0.5 | 0.1 | 1.3 | 3.2 | 4.7 | 6 | 6.4 | 5.8 | 4.9 | 3.9 | 2.9 | 1.9 | 0.7 | 0.2 | 1.4 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of Data| Philadelphia Click for Map Mon -- 03:06 AM EDT -0.01 knots Slack Mon -- 05:52 AM EDT Sunrise Mon -- 06:18 AM EDT -2.16 knots Max Ebb Mon -- 07:12 AM EDT Moonrise Mon -- 10:30 AM EDT 0.00 knots Slack Mon -- 12:50 PM EDT 1.94 knots Max Flood Mon -- 03:36 PM EDT -0.01 knots Slack Mon -- 06:27 PM EDT -2.17 knots Max Ebb Mon -- 08:21 PM EDT Sunset Mon -- 09:21 PM EDT Moonset Mon -- 10:33 PM EDT 0.00 knots Slack 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 |
| 2.2 | 2 | 1.4 | 0.2 | -1.2 | -1.9 | -2.2 | -2.1 | -2 | -1.8 | -0.9 | 0.8 | 1.8 | 1.9 | 1.8 | 0.9 | -0.6 | -1.7 | -2.1 | -2.1 | -1.8 | -1.5 | -0.8 | 0.7 |
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 (16,3,4,5)
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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. |