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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 6:16AM | Sunset 7:57PM | Wednesday August 16, 2017 11:23 AM EDT (15:23 UTC) | Moonrise 12:00AM | Moonset 2:29PM | Illumination 31% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 910 Am Edt Wed Aug 16 2017 Today..NW winds 5 to 10 kt. Waves 2 ft or less. Tonight..W winds around 5 kt. Waves 2 ft or less. Patchy fog after midnight with vsby 1 to 3 nm. Thu..SW winds around 5 kt, becoming se in the late morning and early afternoon, then becoming S with gusts up to 15 kt late. Waves 2 ft or less. Patchy fog early in the morning. A chance of showers and tstms in the afternoon. Vsby 1 to 3 nm early in the morning. Thu night..S winds 5 to 10 kt. Waves 2 ft or less. A chance of showers and tstms early in the evening, then a chance of showers in the late evening and overnight with vsby 1 to 3 nm. Fri..S winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. Showers likely with a chance of tstms. Vsby 1 to 3 nm in the morning. Fri night..SW winds 5 to 10 kt with gusts up to 15 kt. Waves 2 ft or less. Showers likely with a chance of tstms. Sat..W winds around 5 kt. Waves 2 ft or less. Showers likely with a chance of tstms in the morning, then a chance of showers in the afternoon. Sat night..W winds around 5 kt. Waves 2 ft or less. A chance of showers in the evening. Sun..NW winds around 5 kt, becoming W in the afternoon. Waves 2 ft or less. Sun night..W winds around 5 kt. Waves 2 ft or less. Winds and waves higher in and near tstms. | ANZ400 910 Am Edt Wed Aug 16 2017 Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will build across the region today before moving offshore on Thursday. A warm front will lift northward towards the area late Thursday and then moves through the area on Friday. A cold front will approach from the west on Friday, pushing through the region Friday night through Saturday. High pressure returns for Sunday through Tuesday. |
7 Day Forecast for Marine Location Near Hancocks Bridge, NJ
Hourly EDIT Helplocation: 39.49, -75.55 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 161317 afdphi area forecast discussion national weather service mount holly nj 917 am edt Wed aug 16 2017 Synopsis High pressure will build across the region today before moving offshore on Thursday. A warm front will lift northward towards the area late Thursday and then moves through the area on Friday. A cold front will approach from the west on Friday, pushing through the region Friday night through Saturday. High pressure returns for Sunday through Tuesday. Near term until 6 pm this evening High pressure builds in from the west today. Morning sunshine will give way to diurnally driven afternoon scattered to broken clouds. Light northwest wind trends west during the afternoon with sea breezes along the coast. With a weak wind shift (drier dewpoints) developing across our area very late this afternoon near or north of i78... Its not impossible to see a sprinkle in parts of E central or SE pa and central or S nj toward sunset. Hrrrx and nssl WRF have it. Blended pops and review of ki suggest not forecasting a sprinkle in nj or de but instead leave it for the southern part of de. Forecast basis was a 50 50 blend of the 00z 16 GFS nam mos guidance. Max temps a couple of degrees above normal. High risk for dangerous rc formation continues per the 13 second 4-5 ft SE swell from gert, washing ashore. Short term 6 pm this evening through 6 am Thursday Again, its not impossible to see isolated sprinkles vcnty philly to acy at 00z down into S de but not lasting long. Otherwise becoming mostly clear. The wind shift progresses southward to near phl by 12z Thursday. Light north-northeast wind to its north and and light south to southwest to its south. Cooler and much more comfortable i78 northward, though short lived. Patchy fog probably forms toward dawn Thursday, but not nearly to the extent we see it this morning and not expecting a dense fog advy situation. Forecast basis was a 50 50 blend of the 00z 16 GFS nam mos guidance. Long term Thursday through Tuesday High pressure will start to slide offshore on Thursday with a warm front developing across virginia. The warm front will push northward on Thursday and will start to move into our area late Thursday, pushing through the region on Friday. Showers and thunderstorms will start to develop just north of and along the warm front on Thursday afternoon and evening and then will overspread the region Thursday night and Friday as a warmer and moister airmass moves into the mid- atlantic. A cold front will approach the region from the west on Friday, crossing the region late Friday through Saturday. Another round of showers and thunderstorms are expected as the front moves through our area. Good shear and forcing across the area means some storms may be strong, possibly severe, and with pwats running high again, heavy rain will also be a threat. SPC has a marginal risk for severe storms just to our west at this time. Some cooler air should arrive behind the front but it isn't all that cool or dry so little relief is expected. A shortwave will cross through the region on Saturday keeping the chance for showers and thunderstorms throughout Saturday evening. As the wave pushes to the east, the showers thunderstorms will decrease in coverage and drier air will start to move in. High pressure will build in for Sunday and a period of relatively nice weather should continue for the start of the week with the high shifting offshore on Monday. Another frontal system will approach the region for Tuesday Wednesday with another chance for showers and thunderstorms. Aviation 13z Wednesday through Sunday The following discussion is for kphl, kpne, kttn, kabe, krdg, |
kilg, kmiv, kacy and surrounding areas. Remaining ifr MVFR stratus fog dissipates by 14z. ThenVFR sct- bkn clouds AOA 4000 ft develop midday with a west-northwest wind trending west to southwest late in the afternoon except sea breezes developing vcnty kacy. Isolated light showers possible se pa to S nj after 21z. I think the NAM tsec is best for fcstg low lvl rh changes. Narre has completely missed the dense fog in our area, yet unexpectedly to me has a stratus deck lingering to around 15z. Tonight... After any isolated light showers vcnty kilg kphl kacy southward end by 01z, aVFR night with a wind shift progressing southward to near kphl by 12z thu. Winds turn light north-northeast north of the boundary and are light south to southwest to its south. Patchy ifr fog stratus may form in the nj and DELMARVA countryside between 07z-10z 17, but not nearly to the extent of what we see saw this morning. Outlook: Thursday... MainlyVFR conditions expected. Sub-vfr conditions in afternoon evening showers and thunderstorms. Fog possible early Thursday morning and again late Thursday night. Friday... Fog possible early morning. Sub-vfr conditions in showers and thunderstorms. Saturday... MVFR conditions expected scattered showers and thunderstorms possible. Improving conditions late. Sunday... MainlyVFR conditions expected. Marine Seas are around 5 feet at the buoys off the nj de coast as hurricane gert heads enewd well offshore toward the north central atlc. Longer period swell from gert is reaching the buoys (generally 12-13 seconds) and will continue this morning then easing slowly this afternoon and evening. Small craft advisory for seas continues. Light northwest flow this morning becomes southeast to south sea breezes during this afternoon. A wind shift back to northerly should develop for the nj coastal waters late Wednesday night. Some fog may develop near the coast and near delaware bay early today, with visibility restrictions possible. However, this fog should dissipate rapidly after sunrise with a nice day expected, save for the aforementioned higher seas. Outlook... Thursday thru Sunday... Sub-small craft advisory conditions expected on the area waters through Sunday. Some gusts around 20-25 knots are possible Friday afternoon and evening. Showers and thunderstorms possible late Thursday through Saturday, with locally higher seas and winds. Rip currents... a high risk for the development of dangerous rip currents is in effect today. Long period swells from hurricane gert will continue to impact the coasts of delaware and new jersey. Swim only in the presence of lifeguards where safety prevails and if beaches are closed... Respect the decisions of the local officials. Do we need a reminder? There have been numerous drowning fatalities this year along the nj coast, and most of those at unguarded beaches. Phi watches warnings advisories Pa... None. Nj... High rip current risk until 9 pm edt this evening for njz014- 024>026. De... High rip current risk until 9 pm edt this evening for dez004. Md... None. Marine... Small craft advisory for hazardous seas until 2 pm edt this afternoon for anz450>455. Synopsis... Meola near term... Drag mps short term... Drag long term... Meola aviation... Drag meola marine... Drag meola |
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 |
| RDYD1 - 8551910 - Reedy Point, DE | 5 mi | 54 min | 76°F | 80°F | 1015.4 hPa | |||
| DELD1 - 8551762 - Delaware City, DE | 7 mi | 54 min | NNW 4.1 G 7 | 77°F | 76°F | 1015.7 hPa | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 14 mi | 54 min | WSW 1.9 G 5.1 | 77°F | 80°F | 1016 hPa | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 16 mi | 54 min | NW 7 G 7 | 74°F | 78°F | 1015.3 hPa | ||
| MRCP1 - 8540433 - Marcus Hook, PA | 23 mi | 54 min | 79°F | 1015.4 hPa | ||||
| DRSD1 - Delaware Reserve, DE | 28 mi | 114 min | W 2.9 | 74°F | 1015 hPa | 74°F | ||
| 44057 - Susquehanna, MD | 28 mi | 44 min | NNW 7.8 G 9.7 | 77°F | 1015.8 hPa | |||
| PHBP1 - 8545240 - Philadelphia, PA | 37 mi | 54 min | 81°F | 77°F | 1015 hPa | |||
| TCBM2 - 8573364 - Tolchester Beach, MD | 41 mi | 54 min | W 1.9 G 1.9 | 75°F | 78°F | 1016.3 hPa | ||
| BDSP1 | 42 mi | 66 min | 78°F | 1015.6 hPa | ||||
| BRND1 - 8555889 - Brandywine Shoal Light, DE | 42 mi | 54 min | NNW 7 G 8 | 74°F | 1016 hPa | |||
| CMAN4 - 8536110 - Cape May, NJ | 48 mi | 54 min | NW 8.9 G 11 | 76°F | 77°F | 1015.1 hPa |
Wind History for Delaware City, DE
(wind in knots) EDIT (on/off) Help| 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 | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | SE | E | E | NW | E | W | SE | E | W | E | S | W | NW | NW | NW | NW | W | W | NW | W | W | NW | NW G7 | NW |
| 1 day ago | E | SE | SW | W | SE | SE | S | S | S | S | SE | -- | S | SW | S | S | E | NE | E | E | SE | SE | SE | SE |
| 2 days ago | N | N G8 | N G8 | NW | NW G8 | NW G11 | NW G9 | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | E | E | E | E |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Wilmington, New Castle County Airport, DE | 13 mi | 33 min | NNE 3 | 6.00 mi | A Few Clouds with Haze | 80°F | 73°F | 79% | 1015.7 hPa |
Wind History from ILG (wind in knots)
| 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 | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | Calm | Calm | Calm | Calm | E | N | Calm | E | E | Calm | Calm | Calm | N | N | NW | NW | NW | NW | NW | Calm | W | NW | W | N |
| 1 day ago | SW | S | S | S | Calm | SE | S | N | SE | SE | SE | Calm | SE | Calm | Calm | NE | Calm | E | E | NE | E | SE | E | SE |
| 2 days ago | NW | N | N | N | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | Calm | NW | NW | NW | N | Calm | Calm | E | SE |
Tide / Current Tables for Artificial Island, Salem Nuclear Plant, New Jersey
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Artificial Island Click for Map Wed -- 12:43 AM EDT 0.86 feet Low Tide Wed -- 12:58 AM EDT Moonrise Wed -- 06:02 AM EDT 5.91 feet High Tide Wed -- 06:15 AM EDT Sunrise Wed -- 12:46 PM EDT 0.49 feet Low Tide Wed -- 03:29 PM EDT Moonset Wed -- 06:33 PM EDT 6.75 feet High Tide Wed -- 07:56 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 | 0.9 | 1.7 | 3.3 | 4.7 | 5.6 | 5.9 | 5.6 | 4.5 | 3.1 | 1.9 | 1.1 | 0.6 | 0.5 | 1.2 | 2.9 | 4.7 | 6 | 6.6 | 6.7 | 5.9 | 4.7 | 3.5 | 2.5 |
Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
EDIT (on/off) Help One Week of Data| Chesapeake and Delaware Canal Click for Map Wed -- 12:59 AM EDT Moonrise Wed -- 02:43 AM EDT 2.07 knots Max Flood Wed -- 05:53 AM EDT -0.00 knots Slack Wed -- 06:16 AM EDT Sunrise Wed -- 08:18 AM EDT -1.40 knots Max Ebb Wed -- 10:30 AM EDT 0.01 knots Slack Wed -- 02:42 PM EDT 1.91 knots Max Flood Wed -- 03:30 PM EDT Moonset Wed -- 05:01 PM EDT -0.10 knots Slack Wed -- 07:57 PM EDT Sunset Wed -- 08:45 PM EDT -2.31 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 |
| 0.8 | 1.5 | 2 | 2.1 | 1.8 | 1.2 | -0.4 | -1.1 | -1.4 | -1.3 | -0.8 | 0.7 | 1.2 | 1.5 | 1.8 | 1.9 | 1.5 | 0.3 | -1.5 | -2 | -2.2 | -2.3 | -2.1 | -1.7 |
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 (11,2,3,4)
(on/off) Help |  |  |
Ground Weather Radar Station Dover AFB, DE
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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. |