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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 | Saturday June 23, 2018 4:22 AM EDT (08:22 UTC) | Moonrise 3:21PM | Moonset 1:48AM | Illumination 75% |  |
Marine Forecasts
EDIT (on/off) Help| ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 1241 Am Edt Sat Jun 23 2018 Rest of tonight..E winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft or less. Showers likely, then a chance of showers late. Sat..E winds 5 to 10 kt, becoming S in the afternoon. Waves 2 ft or less. A chance of showers until late afternoon. A chance of tstms early in the afternoon, then showers and tstms likely late. Sat night..SW winds 5 to 10 kt. Waves 2 ft or less. Showers and tstms likely in the evening, then a chance of showers after midnight. Sun..W winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Waves 2 ft or less. A chance of showers and tstms late. Sun night..W winds 5 to 10 kt. Waves 2 ft or less. A chance of tstms in the evening. A chance of showers. Mon..NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 ft or less. Mon night..N winds 5 to 10 kt. Waves 2 ft or less. Tue..E winds around 5 kt, becoming se in the afternoon. Waves 2 ft or less. Tue night..S winds 5 to 10 kt. Waves 2 ft or less. Wed..S winds 10 to 15 kt. Waves 2 ft or less, then around 3 ft in the afternoon. Wed night..S winds 10 to 15 kt. Waves around 3 ft. A chance of showers. Winds and waves higher in and near tstms. | ANZ400 1241 Am Edt Sat Jun 23 2018 Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure situated east of new england will continue to move offshore tonight. Meanwhile, a low pressure system organizing over the mississippi valley leads to a warm frontal passage through the region on Saturday followed by a cold frontal passage late Sunday. High pressure over ontario builds into the region on Monday and slowly moves off the eastern seaboard to a position near bermuda by 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 230156 afdphi area forecast discussion national weather service mount holly nj 956 pm edt Fri jun 22 2018 Synopsis High pressure situated east of new england will continue to move offshore tonight. Meanwhile, a low pressure system organizing over the mississippi valley leads to a warm frontal passage through the region on Saturday followed by a cold frontal passage late Sunday. High pressure over ontario builds into the region on Monday and slowly moves off the eastern seaboard to a position near bermuda by the end of next week. Near term until 6 am Saturday morning Periods of light to locally moderate rain will continue to impact the region through the night. Some patchy fog possible as well due to the saturated airmass. Weak low pressure and a slow moving front will approach from the S tonight. A TSTM is possible across the DELMARVA areas. It will remain mild and humid overnight with lows only dropping into the mid upper 60s S E and upper 50s to low 60s N w. Winds will remain onshore E SE at around 10 mph in most areas. Closer to the shore, winds will be 15 to 20 mph at times withs some gusts around 25 mph. Short term 6 am Saturday morning through 6 pm Saturday The front will move northwards across the area during the day. Where it ends up will determine weather types through the day. Areas S E will likely break out into some sunshine after the morning showers. These areas have a better chc for reaching high temps in the mid upper 80s. Also, these S E areas have a better chc for afternoon tstms with some heavy rains and psbl svr weather. The SPC has a marginal risk for day2 across the srn half of our cwa. We have included the delaware valley in these (western tstm) areas attm, but there is more than average uncertainty with regards to this. Further N w, the front may not move thru as the low passes by, so plenty of showers and low clouds may linger through the day. Temperatures in these areas may remain in the 70s all day with frequent showers. Long term Saturday night through Friday Saturday night through Monday... . To start the period Saturday evening, warm front will be draped over eastern pa extending east into central nj... Likely near or just north of philadelphia and trenton. Expect that strong to potentially severe thunderstorms may be ongoing into the early part of the evening before moving out by late evening. The strongest storms should be near and south of the warm front with torrential rain and damaging winds being the biggest threats. Once these heavier showers storms move out by the overnight the area will remain muggy and moist with fairly light winds as the diffuse front lingers over the area. There could be some scattered to isolated showers but these would be few and far between. The other concern will be areas of low clouds and patchy fog, especially over the higher terrain of eastern pa , that may form overnight in the weak, moist flow. Lows should range from the low to mid 60s north to the low 70s south where it will also feel especially muggy since dew points will also linger near 70. For Sunday, diffuse area of low pressure tracks east across upstate ny toward SW new england through the day dragging a cold front toward the area by late day. Since the area will be in the warm sector, expect generally warm to hot conditions under variable clouds with highs mostly in the 80s to as high as 90 over interior portions of the delmarva. As mentioned, late day a cold front will approach along with an associated upper level trough and this will result in scattered showers storms developing once again through the afternoon into the early evening... Initially affecting the higher terrain areas of eastern pa but potentially affecting the coast by evening. Conditions don't look quite as favorable for severe weather compared to Saturday but it's still possible a few storms could produce locally strong to marginally severe wind gusts as there will some instability (ml capes 500-1000 j kg) with fairly steep low level lapse rates. Sunday night, scattered showers storms continue into the evening as the cold front moves across before moving out overnight. It will be another fairly muggy, mild night with lows in the 60s to near 70 though dew points will start to fall overnight behind the front. Heading into Monday, skies clear with humidity levels continuing to fall as drier air continues to be ushered in by northerly winds behind the front. Highs will generally be in the low to mid 80s except 70s in the far north. Monday night through Friday... high pressure moves in and dominates our weather Monday night through Tuesday and Tuesday night bringing mainly clear skies with seasonable temperatures and comfortable humidity levels. Beyond this time, forecast models start to diverge in some of the forecast details. For Wednesday, the high moves off the coast so temperatures and especially dew points start to creep up. The next system will begin to advance towards the area with the GFS bringing this system in faster than the ECMWF and gem as these models hold it off until Thursday. For this reason, we introduce pops for showers storms Wednesday afternoon but only keep them at slight chance and for areas mainly west of the i-95 corridor. |
Heading towards the end of next week, early indications are for a fairly strong ridge to build across the western atlantic extending west along the coast... Though the GFS is stronger than the gem and ecmwf with this feature. As a result, temperatures look to heat up and could potentially reach values of 90+ along with increasing humidity. However there will also be an increasing chance for scattered afternoon showers and storms in the SW flow. Aviation 02z Saturday through Wednesday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Tonight... CIGS and vsbys decrease to ifr with occasional showers as a slow moving front approaches from the south. Generally east winds less than 10 kt. Saturday... Slow improvement from S to N during the morning. Areas S E may break out toVFR by late morning while the delaware valley sites may have to wait until later in the afternoon. Sct tstms will develop in the afternoon instability s e, possibly affecting kphl. Confidence in frontal placement and expected weather is low-medium for Saturday. Winds becoming s to SW by afternoon. Outlook... Saturday night... Tsra possible until 06z. Thereafter, MVFR in low clouds and patchy fog possible, mainly abe, rdg, miv, and acy. Southwest winds less than 10 kt. Low confidence. Sunday... MVFR in low clouds and patchy fog improving toVFR early. Another round of shra possible at all terminals, with tsra possible at ttn-abe-rdg, may lead to brief ceiling visibility restrictions. West-southwest winds around 10 kt with gusts of 15-20 knots. Medium confidence. Sunday night... Spotty MVFR possible due to low clouds and shra, especially at abe and rdg. OtherwiseVFR. Winds veering to the northwest around 10 kt. Low confidence. Monday - Tuesday... MVFR in patchy fog possible Monday night into early Tuesday morning. OtherwiseVFR. Northwest winds around 10 kt on Monday becoming light and variable Monday night into Tuesday. Wednesday... MainlyVFR. Marine Tonight... SCA conditions expected with occasional showers. A few tstms possible across the delaware coastal or SRN nj coastal waters after midnight. Saturday... SCA conditions the first part of the day, then decreasing winds and seas. Showers expected during the morning, the sct tstms will be around for the afternoon. Locally higher winds and seas with any tstm. Outlook... strong thunderstorms will be possible over the waters into Saturday evening and may bring local wind gusts to 34+ knots. These are expected to weaken and move out by the overnight with otherwise breezy SW winds continuing Saturday night and Sunday though winds should remain below SCA levels. However Saturday night into early Sunday, seas may reach the 4-6 ft range. By late day Sunday into Sunday night, additional showers and storms will be possible as a cold front moves through with winds shifting to northerly behind the front for Monday. Expect conditions to below sca levels during this period. Beyond this time, high pressure builds over the waters Monday night through Tuesday bringing light winds with seas generally 3 ft or less. This high moves east of the waters by Wednesday with SW winds as well as seas starting to ramp up once again, potentially to near SCA levels by late day. Tides coastal flooding With a persistent onshore flow through early Saturday, increasingly positive departures from astronomical tides are expected. The high tide of most concern is tonight, when minor flooding is possible in spots. Phi watches warnings advisories Pa... None. Nj... None. De... None. Md... None. Marine... Small craft advisory until 6 am edt Sunday for anz451>455. Small craft advisory until 6 am edt Sunday for anz450. Small craft advisory until 6 am edt Saturday for anz431. Synopsis... Fitzsimmons near term... Mps o'hara short term... O'hara long term... Fitzsimmons aviation... Fitzsimmons mps o'hara marine... Fitzsimmons mps o'hara tides coastal flooding... |
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 | 59 min | 66°F | 74°F | 1010.9 hPa | |||
| BDSP1 | 6 mi | 53 min | 65°F | 76°F | 1011.4 hPa | |||
| MRCP1 - 8540433 - Marcus Hook, PA | 16 mi | 53 min | 67°F | 76°F | 1010.7 hPa | |||
| BDRN4 - 8539094 - Burlington, Delaware River, NJ | 18 mi | 53 min | ENE 8.9 G 12 | 65°F | 77°F | 1011.3 hPa | ||
| NBLP1 - 8548989 - Newbold, PA | 26 mi | 53 min | E 5.1 G 11 | 64°F | 78°F | 1012.5 hPa | ||
| DELD1 - 8551762 - Delaware City, DE | 34 mi | 53 min | ENE 8 G 12 | 66°F | 72°F | 1010.7 hPa | ||
| RDYD1 - 8551910 - Reedy Point, DE | 35 mi | 53 min | 67°F | 76°F | 1009.9 hPa | |||
| CHCM2 - 8573927 - Chesapeake City, MD | 45 mi | 53 min | E 9.9 G 13 | 67°F | 77°F | 1010.6 hPa | ||
| JCRN4 - Jacques Cousteau Reserve, NJ | 48 mi | 53 min | NE 9.9 | 57°F | 1011 hPa | 57°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 | 29 min | ENE 11 | 10.00 mi | Overcast | 64°F | 62°F | 93% | 1011.1 hPa |
| Philadelphia, Northeast Philadelphia Airport, PA | 12 mi | 29 min | ENE 10 | 10.00 mi | Overcast | 66°F | 62°F | 87% | 1011.8 hPa |
| Philadelphia - Wings Field Airport, PA | 13 mi | 48 min | ENE 7 | 4.00 mi | Overcast | 61°F | 60°F | 100% | 1012.5 hPa |
| Mount Holly, South Jersey Regional Airport, NJ | 18 mi | 29 min | Var 5 | 10.00 mi | Overcast | 63°F | 63°F | 100% | 1010.9 hPa |
Wind History from PHL (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | |
| Last 24hr | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | NE G16 | E | E | E | NE | NE | NE |
| 1 day ago | NE | E | NE | NE | NE | N | N G16 | N | NE | SE | SE | SE | S | SE | Calm | S | S | S | S | S | SW | S | Calm | Calm |
| 2 days ago | N | Calm | E | E | Calm | Calm | SW | SW | S G17 | SW | SW | W | S | S | S | S | S | SW | Calm | Calm | NW | Calm |
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 -- 02:47 AM EDT Moonset Sat -- 05:09 AM EDT 0.35 feet Low Tide Sat -- 05:32 AM EDT Sunrise Sat -- 10:25 AM EDT 6.39 feet High Tide Sat -- 04:20 PM EDT Moonrise Sat -- 05:27 PM EDT 0.10 feet Low Tide Sat -- 08:33 PM EDT Sunset Sat -- 10:56 PM EDT 7.08 feet High 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 |
| 5.8 | 4.9 | 3.8 | 2.5 | 1.2 | 0.4 | 0.9 | 2.3 | 3.7 | 5.2 | 6.3 | 6.2 | 5.5 | 4.6 | 3.6 | 2.5 | 1.3 | 0.2 | 0.4 | 1.8 | 3.4 | 5 | 6.5 | 7.1 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of Data| Philadelphia Click for Map Sat -- 01:40 AM EDT -1.80 knots Max Ebb Sat -- 02:47 AM EDT Moonset Sat -- 05:32 AM EDT Sunrise Sat -- 05:50 AM EDT 0.00 knots Slack Sat -- 07:50 AM EDT 1.27 knots Max Flood Sat -- 08:08 AM EDT 1.27 knots Min Flood Sat -- 09:03 AM EDT 1.30 knots Max Flood Sat -- 10:59 AM EDT -0.00 knots Slack Sat -- 02:00 PM EDT -1.79 knots Max Ebb Sat -- 04:20 PM EDT Moonrise Sat -- 06:09 PM EDT 0.01 knots Slack Sat -- 08:19 PM EDT 1.43 knots Max Flood Sat -- 08:28 PM EDT 1.43 knots Min Flood Sat -- 08:33 PM EDT Sunset Sat -- 09:29 PM EDT 1.46 knots Max Flood Sat -- 11:32 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 |
| -1.3 | -1.7 | -1.8 | -1.6 | -1.5 | -1 | 0.2 | 1.1 | 1.3 | 1.3 | 1 | -0 | -1.1 | -1.6 | -1.8 | -1.7 | -1.5 | -1.2 | -0.2 | 1 | 1.4 | 1.4 | 1.4 | 0.7 |
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 (4,6,7,8)
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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. |