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Marine Weather and Tides
Version 3.4 |
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. 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. |
| Sunrise 6:11AM | Sunset 7:47PM | Saturday April 21, 2018 5:50 AM EDT (09:50 UTC) | Moonrise 9:52AM | Moonset 12:00AM | Illumination 35% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 306 Am Edt Sat Apr 21 2018 Today..NW winds 5 to 10 kt, becoming W late. Waves 2 ft or less. Tonight..SW winds around 5 kt, becoming N late. Waves 2 ft or less. Sun..NE winds 5 to 10 kt, diminishing to around 5 kt late in the morning, then becoming S early in the afternoon, increasing to 5 to 10 kt late. Waves 2 ft or less. Sun night..S winds 5 to 10 kt, becoming sw late. Waves 2 ft or less. Mon..NE winds around 5 kt, becoming se in the afternoon. Waves 2 ft or less. Mon night..SE winds 5 to 10 kt. Waves 2 ft or less. Tue..E winds 10 to 15 kt. Waves 2 ft or less, then around 3 ft in the afternoon. Tue night..E winds 10 to 15 kt. Waves around 3 ft. Rain. Wed..E winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Waves around 3 ft in the morning, then 2 ft or less. Rain. Wed night..NW winds around 5 kt. Waves 2 ft or less. Rain likely in the evening, then a chance of showers after midnight. | ANZ400 306 Am Edt Sat Apr 21 2018 Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure over the great lakes builds east today, and eventually moves offshore on Monday. Low pressure over the gulf coast states lifts to the north and east, and slowly impacts the mid-atlantic during the mid-week period. Another area of low pressure may affect the area at the end of next week. |
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 210814 afdphi area forecast discussion national weather service mount holly nj 414 am edt Sat apr 21 2018 Synopsis High pressure over the great lakes builds east today, and eventually moves offshore on Monday. Low pressure over the gulf coast states tracks to the east, and slowly impacts the mid- atlantic during the mid-week period. Another area of low pressure may affect the area at the end of next week. Near term until 6 pm this evening Main forecast concern is temperatures this morning, with current temperatures running about 2-4 degrees lower than forecast (locally more), as clear skies and light to calm winds have allowed for nearly ideal radiational cooling conditions. The favorable valleys and rural locations have tanked in the past hour or two temp-wise, with locations in the pine barrens already reaching freezing. Upgraded the frost advisory to a freeze warning given these trends (though one may question the effectiveness of such an upgrade so late in the night) for the pine barrens and zones north west of philadelphia (where temps 32-35 degrees are observed at this time). After this morning's chill, today should be a nice day, as northwesterly midlevel flow and building surface high pressure allow for dry conditions with temperatures just a little below seasonal averages. Winds should be a little lower today as the surface pressure gradient slackens with the approaching high. A 250-mb jet streak and accompanying vort MAX should provide some lift in the upper levels to allow for some increasing clouds. These may limit temperatures from climbing a degree or two, and i generally reduced highs by this amount today. Short term 6 pm this evening through 6 am Sunday Northwest midlevel flow will continue tonight as a surface ridge remains over the region. Some perturbations in the midlevel flow will approach the region by morning, but there is little lift with these perturbations. Other than some increased mid and upper-level clouds, not expecting much in terms of sensible weather impacts. This means that temperatures will once again be the primary forecast concern. Could see temperatures flirting with freezing again in portions of the area with the growing season underway, but tonight's environment will be a little less favorable. For one thing, if increased cloud cover is present, some radiation may be re-emitted to the surface (though the height of the clouds will not hamper nocturnal cooling as much as one may anticipate). This will be especially true in the southern cwa, but how far north these clouds persist may prove critical in how far temperatures fall in more susceptible locations such as the pine barrens. At this point, way too uncertain marginal to issue additional frost freeze products. My suspicion is that no additional products will be necessary. Long term Sunday through Friday High pressure over the area Sunday slowly drifts offshore Sunday night, and remains over the western atlantic ocean waters through Monday night before drifting offshore on Tuesday. Plenty of sunshine and mild, though temperatures will generally be a few degrees below normal during the day. At night, with clear skies and light winds, radiational cooling conditions will allow for colder conditions in the mountains and in the pine barrens of nj. During this time, low pressure over the gulf coast states will slowly track to the east, and will be over the southeast u.S by Tuesday evening. A warm front just southwest of the region lifts north through the region Tuesday night as the low tracks north along the coast. |
Though there are rain chances during the day Tuesday lifting from south to north, the best chances will be Tuesday night as the low lifts to the north. The low then slowly works its way north through Wednesday, will be south of long island Wednesday night, and departs on Thursday. Although there may be a period on Wednesday where locally heavy rain is possible at times, not expecting a prolonged period of widespread heavy rain with this system. Weak high pressure builds through the region late Friday and Friday night. Another cold front approaches on Saturday. Temperatures during this time will generally be at or below normal levels for most of the week, but temperatures trend warmer towards the end of next week. Aviation 07z Saturday through Wednesday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Today...VFR with sct-bkn high clouds. Northwest winds 5 to 15 kts. High confidence. Tonight...VFR with sct-bkn high clouds, especially south of phl. Winds should become light and variable. High confidence. Outlook... Sunday through Monday night...VFR. Generally light winds. High confidence. Tuesday... GenerallyVFR. Clouds build from south to north. E-se winds 10-15 kt. Tuesday night through Wednesday... MVFR ifr in rain and fog. E-ne winds 10-15 kt. Marine Fair weather and sub-advisory winds seas are expected through tonight. Northwest winds 10 to 15 kts (possibly gusting to 20 kts or so) this morning will likely switch to southwest this afternoon before switching back to northwest or north tonight. Seas should remain near or below 3 feet. Outlook... Sunday through Tuesday... Tranquil conditions on the waters with sub-sca conditions. Tuesday night and Wednesday... Rain, fog, and gusty e-ne winds as low pressure impacts the waters. SCA conditions expected. Phi watches warnings advisories Pa... Freeze warning until 8 am edt this morning for paz060-101>104- 106. Nj... Freeze warning until 8 am edt this morning for njz012-013-015- 019-020-022-027. Frost advisory until 8 am edt this morning for njz016>018-021. De... Frost advisory until 8 am edt this morning for dez001>003. Md... Freeze warning until 8 am edt this morning for mdz008. Frost advisory until 8 am edt this morning for mdz012-015-020. Marine... None. Synopsis... Mps near term... Cms short term... Cms long term... Mps aviation... Cms mps marine... Cms 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 |
| PHBP1 - 8545240 - Philadelphia, PA | 3 mi | 50 min | 41°F | 47°F | 1030 hPa (+0.8) | |||
| BDSP1 | 6 mi | 50 min | 40°F | 50°F | 1030.2 hPa (+0.6) | |||
| MRCP1 - 8540433 - Marcus Hook, PA | 16 mi | 50 min | 38°F | 49°F | 1030.3 hPa (+0.8) | |||
| BDRN4 - 8539094 - Burlington, Delaware River, NJ | 18 mi | 74 min | Calm G 1.9 | 37°F | 45°F | 1029.8 hPa | ||
| NBLP1 - 8548989 - Newbold, PA | 26 mi | 50 min | WNW 4.1 G 4.1 | 37°F | 46°F | 1030.3 hPa (+0.5) | ||
| DELD1 - 8551762 - Delaware City, DE | 34 mi | 50 min | WSW 2.9 G 2.9 | 37°F | 47°F | 1030.8 hPa (+0.8) | ||
| RDYD1 - 8551910 - Reedy Point, DE | 35 mi | 50 min | 39°F | 50°F | 1030.4 hPa (+0.7) | |||
| CHCM2 - 8573927 - Chesapeake City, MD | 45 mi | 56 min | S 1 G 1.9 | 34°F | 51°F | 1031.4 hPa | ||
| JCRN4 - Jacques Cousteau Reserve, NJ | 48 mi | 80 min | W 4.1 | 35°F | 1029 hPa | 25°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 | 56 min | W 4 | 10.00 mi | A Few Clouds | 38°F | 25°F | 60% | 1030.6 hPa |
| Philadelphia, Northeast Philadelphia Airport, PA | 12 mi | 56 min | W 3 | 10.00 mi | Fair | 36°F | 25°F | 64% | 1030.6 hPa |
| Philadelphia - Wings Field Airport, PA | 13 mi | 75 min | N 0 | 10.00 mi | Fair | 32°F | 28°F | 87% | 1030.5 hPa |
| Mount Holly, South Jersey Regional Airport, NJ | 18 mi | 56 min | W 3 | 10.00 mi | Fair | 33°F | 27°F | 78% | 1030.1 hPa |
Wind History from PHL (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | NW | NW | NW G17 | N G25 | NW G21 | NW | NW G26 | NW G23 | NW G23 | NW G21 | NW G22 | NW G23 | NW G22 | NW G21 | N | N G23 | N G20 | N | N G20 | N | N | Calm | W | W |
| 1 day ago | N | E | E | NW | NW | N | Calm | N | NW | NW G23 | NW G27 | NW G26 | NW | NW G23 | NW G23 | NW G28 | W G20 | W | W | NW | NW G19 | NW G20 | NW | NW |
| 2 days ago | W | W | W | W | W | W | SW | W | W G17 | SW G17 | SW | W | W | SW | SW | Calm | Calm | E | E | E | E | NE | E | N |
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 Sat -- 12:52 AM EDT Moonset Sat -- 12:54 AM EDT 0.56 feet Low Tide Sat -- 06:02 AM EDT 6.96 feet High Tide Sat -- 06:14 AM EDT Sunrise Sat -- 10:52 AM EDT Moonrise Sat -- 01:43 PM EDT 0.39 feet Low Tide Sat -- 06:49 PM EDT 6.06 feet High Tide Sat -- 07:45 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 |
| 0.9 | 0.6 | 1.5 | 3.8 | 5.7 | 6.6 | 7 | 6.6 | 5.7 | 4.6 | 3.6 | 2.6 | 1.6 | 0.7 | 0.4 | 1.7 | 3.7 | 5 | 5.8 | 6 | 5.5 | 4.5 | 3.5 | 2.5 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of Data| Philadelphia Click for Map Sat -- 12:52 AM EDT Moonset Sat -- 01:50 AM EDT 0.00 knots Slack Sat -- 03:53 AM EDT 2.37 knots Max Flood Sat -- 06:14 AM EDT Sunrise Sat -- 07:13 AM EDT -0.00 knots Slack Sat -- 10:41 AM EDT -2.22 knots Max Ebb Sat -- 10:52 AM EDT Moonrise Sat -- 02:39 PM EDT 0.00 knots Slack Sat -- 04:34 PM EDT 1.99 knots Max Flood Sat -- 07:45 PM EDT Sunset Sat -- 07:49 PM EDT -0.00 knots Slack Sat -- 10:54 PM EDT -2.22 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 |
| -1.6 | -1 | 0.3 | 1.8 | 2.4 | 1.9 | 1.3 | 0.3 | -1 | -1.9 | -2.2 | -2.2 | -2 | -1.7 | -1 | 0.6 | 1.8 | 1.9 | 1.6 | 1 | -0.3 | -1.5 | -2.1 | -2.2 |
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (5,6,7,8)
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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. |