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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 7:04AM | Sunset 7:15PM | Wednesday March 20, 2019 4:55 AM EDT (08:55 UTC) | Moonrise 5:56PM | Moonset 6:09AM | Illumination 99% |  |
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 352 Am Edt Wed Mar 20 2019
.small craft advisory in effect from Thursday morning through Thursday afternoon...
Today..SE winds around 5 kt, increasing to 5 to 10 kt this afternoon. Waves 2 ft or less.
Tonight..E winds 5 to 10 kt. Waves 2 ft or less. A chance of rain in the late evening and early morning. Rain likely late.
Thu..SE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 ft or less, then around 3 ft early in the afternoon, then 2 ft or less late. Rain. Vsby 1 to 3 nm early in the morning.
Thu night..SE winds around 10 kt, becoming S late in the evening, then becoming W after midnight. Gusts up to 25 kt. Waves 2 ft or less, then around 3 ft after midnight. Rain early in the evening, then a chance of rain in the late evening and overnight.
Fri..NW winds 15 to 20 kt with gusts up to 30 kt. Waves around 3 ft. A chance of rain in the morning.
Fri night..NW winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Sat..NW winds 20 to 25 kt with gusts up to 35 kt. Waves around 3 ft.
Sat night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 3 ft.
Sun..W winds around 10 kt. Gusts up to 20 kt in the morning. Waves 2 ft or less.
Sun night..SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves 2 ft or less.
.small craft advisory in effect from Thursday morning through Thursday afternoon...
Today..SE winds around 5 kt, increasing to 5 to 10 kt this afternoon. Waves 2 ft or less.
Tonight..E winds 5 to 10 kt. Waves 2 ft or less. A chance of rain in the late evening and early morning. Rain likely late.
Thu..SE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 ft or less, then around 3 ft early in the afternoon, then 2 ft or less late. Rain. Vsby 1 to 3 nm early in the morning.
Thu night..SE winds around 10 kt, becoming S late in the evening, then becoming W after midnight. Gusts up to 25 kt. Waves 2 ft or less, then around 3 ft after midnight. Rain early in the evening, then a chance of rain in the late evening and overnight.
Fri..NW winds 15 to 20 kt with gusts up to 30 kt. Waves around 3 ft. A chance of rain in the morning.
Fri night..NW winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Sat..NW winds 20 to 25 kt with gusts up to 35 kt. Waves around 3 ft.
Sat night..NW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 30 kt. Waves around 3 ft.
Sun..W winds around 10 kt. Gusts up to 20 kt in the morning. Waves 2 ft or less.
Sun night..SW winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves 2 ft or less.
ANZ400 352 Am Edt Wed Mar 20 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure along the atlantic seaboard will lift to the northeast and out to sea today. A cold front approaches from the west on Thursday, and low pressure will develop over the mid-atlantic. The low lifts along the coast Thursday, and then into the gulf of maine Thursday night. The cold front passes through the region on Friday. High pressure builds back in from the west on Saturday and moves offshore on Sunday. Another cold front will pass through the region early next week
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure along the atlantic seaboard will lift to the northeast and out to sea today. A cold front approaches from the west on Thursday, and low pressure will develop over the mid-atlantic. The low lifts along the coast Thursday, and then into the gulf of maine Thursday night. The cold front passes through the region on Friday. High pressure builds back in from the west on Saturday and moves offshore on Sunday. Another cold front will pass through the region early next week
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 200755 afdphi area forecast discussion national weather service mount holly nj 355 am edt Wed mar 20 2019 Synopsis High pressure along the atlantic seaboard will lift to the northeast and out to sea today. A cold front approaches from the west on Thursday, and low pressure will develop over the mid- atlantic. The low lifts along the coast Thursday, and then into the gulf of maine Thursday night. The cold front passes through the region on Friday. High pressure builds back in from the west on Saturday and moves offshore on Sunday. Another cold front will pass through the region early next week. Near term until 6 pm this evening One more nice day before diminishing conditions move into the area tonight into Thursday. High pressure at the surface will continue to push out to sea today, which will allow return flow to develop across the area. Temperatures will be a few degrees warmer than Tuesday, while dewpoints start to increase later in the day. Dry weather will continue through the day, although cloud cover will increase through the day north of a developing low pressure offshore of the carolinas. Short term 6 pm this evening through 6 am Thursday The low pressure offshore of the carolinas this afternoon will begin moving inland as it drifts northward overnight. A weak surface trough will swing across the mid atlantic region as the lifts northward, while a couple of short wave vorticity impulses move across the area overnight. This will lead to increasing chances of rain through the overnight hours. Temperatures may be cold enough across the poconos at the start of the precipitation for some light snow to develop. We are not expecting much if any accumulation at this time, less than an inch if any at all. Long term Thursday through Tuesday Cold front ahead of a deep upper trough moves though the great lakes and into the ohio valley Thursday. Low pressure over the mid-atlantic moves the chesapeake bay by Thursday afternoon, then across the DELMARVA peninsula and towards southern new jersey. The models seem to be taking a slower and more inland trend with this system. Thursday will feature rain moving in from south to north through the day, and rain may be heavy at times. A tight onshore pressure gradient will result in east winds 15-20 mph with gusts up to 30 mph for mainly coastal areas of new jersey and delaware. Low pressure lifts to the northeast Thursday night, and then the cold front swings through the region Friday morning. Rain ends after midnight Thursday night, and then there will be a round of showers passing across the region Friday afternoon associated with the passage of a strong shortwave. Another shortwave passing north of the region may result in snow showers for the poconos Friday evening. Low pressure intensifies over eastern canada Friday and Friday night, and forms a tight pressure gradient with high pressure building in from the west. West-northwest winds will range from 15-25 mph with 25-35 mph gusts, and the gusty winds continue into Saturday. A wind advisory may be needed Friday evening through Saturday. Temperatures will be in the 40s and 50s Thursday and Friday, and the strong CAA will result in highs in the 30s and 40s on Saturday. By Sunday, low pressure over eastern canada moves out to sea, and high pressure from the west dives off the southeast u.S. Return flow sets up, and temperatures warm back up into at least the 50s on Sunday, though models may be on the cool side, and it could get back into the 60s. Low pressure passing north of the area will drag a cold front through the region early in the new week. Showers possible Monday through Tuesday, though there is inconsistency among the models, so confidence is low as to timing and even ptypes. Will carry chance pops for now and see how models trend going forward. Aviation 08z Wednesday through Sunday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Today...VFR conditions expected for all TAF sites through today, although clouds will increase later today. Light and variable winds will increase out of the south to southeast later this morning and into the afternoon. An occasional gust around 15 knots could occur later this afternoon as well. Tonight...VFR conditions start the night tonight, although clouds will increase and lower through the night. MVFR, possible ifr conditions likely to develop and spread northward later in |
the night as rain moves northward into the area. Winds will remain out of the southeast through the overnight hours 5-10 knots. Outlook... Thursday... MVFR ifr conditions develop during the day in rain fog low clouds. East winds around 10 kt, though 15-20 kt with gusts up to 30 kt possible at kmiv kacy. Thursday night... MVFR ifr conditions in rain fog low clouds. Nw winds around 10 kt. Friday... MainlyVFR conditions, but sub-vfr conditions in scattered showers. NW winds 15-20 kt with 25-35 kt gusts. Friday night-Saturday... GenerallyVFR, though MVFR in scattered snow showers possible Friday evening at krdg kabe. NW winds 15-20 kt with 25-35 kt gusts. Saturday night-Sunday... VFR conditions continue with winds shifting to west and diminishing to around 10 kt with gusts below 20 kt. Marine Conditions expected to remain below advisory levels for today and tonight, although winds and waves begin to increase later tonight north of a developing low pressure system to our south. Outlook... Thursday... East winds increase to 15-20 kt with 25-30 kt. Seas build to 4-6 ft. Vsby restrictions in rain fog. Thursday night-Friday... Small craft advisory conditions likely with gale force winds possible late Friday. Friday night-Saturday... Nw winds 20-30 kt with 35-40 kt gusts. Winds may start to diminish Saturday afternoon and especially into the evening, possibly to SCA levels. Seas should run generally 4 to 6 ft. Saturday night-Sunday... Trend will be for diminishing winds with a gradual shift from northwesterly to westerly. Sca conditions should linger for the first half of Saturday night before dropping to sub-sca. Seas diminishing to 2 to 4 ft by the latter half of Saturday night and into Sunday. Tides coastal flooding Developing low pressure is forecast to move up the east coast on Wednesday and Thursday. The low is expected to pass over or near our region on Thursday night. An onshore flow is anticipated to develop in advance of the low from Wednesday into Thursday. Tidal departures will likely be on the increase at that time. Wednesday evening's high tide should not pose any problem. It is possible that we could see some spotty minor flooding with Thursday morning's high tide. Our main focus is on the Thursday evening high tide. Tidal departures of +0.8 to +0.9 feet would begin to create minor flooding at that time along the coasts of new jersey and delaware, along delaware bay and on the tidal delaware river. Departures of greater than +1.0 foot would produce some noticeable impacts on the coastal tidal communities in our region, with some roadway flooding. Also, moderate to heavy rainfall could worsen any roadway and poor drainage area flooding. Based on the present forecast we will continue to keep an eye on the Thursday evening high tide for a possible coastal flood advisory. Once the low moves away to our northeast, an offshore wind will develop and the potential for minor coastal flooding will come to an end. Phi watches warnings advisories Pa... None. Nj... None. De... None. Md... None. Marine... Small craft advisory from 8 am to 6 pm edt Thursday for anz430- 431-450>455. Synopsis... Mps near term... Robertson short term... Robertson long term... Mps aviation... Robertson mps marine... Robertson mps 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 |
| RDYD1 - 8551910 - Reedy Point, DE | 5 mi | 43 min | 1028.9 hPa | |||||
| DELD1 - 8551762 - Delaware City, DE | 7 mi | 37 min | Calm G 1.9 | 36°F | 42°F | 1029.4 hPa | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 14 mi | 43 min | Calm G 1 | 31°F | 48°F | 1029.5 hPa | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 16 mi | 37 min | SW 7 G 8 | 40°F | 44°F | 1029.2 hPa | ||
| MRCP1 - 8540433 - Marcus Hook, PA | 23 mi | 37 min | 34°F | 46°F | 1028.9 hPa | |||
| DRSD1 - Delaware Reserve, DE | 28 mi | 145 min | Calm | 30°F | 1030 hPa | |||
| PHBP1 - 8545240 - Philadelphia, PA | 37 mi | 43 min | 36°F | 47°F | 1028.8 hPa | |||
| TCBM2 - 8573364 - Tolchester Beach, MD | 41 mi | 37 min | ESE 2.9 G 2.9 | 34°F | 47°F | 1029.4 hPa | ||
| BDSP1 | 42 mi | 37 min | 37°F | 51°F | 1029.3 hPa | |||
| CMAN4 - 8536110 - Cape May, NJ | 48 mi | 37 min | E 1 G 1.9 | 33°F | 43°F | 1029.1 hPa |
Wind History for Delaware City, DE
(wind in knots) EDIT (on/off) Help| 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 | N | N | N | NW | N | N | N | N | N | SE | SE | E | E | SE | S | SW | -- | SW | S | SW | S | -- | -- | SE |
| 1 day ago | E G6 | SW | SE G6 | SW | E G7 | E | SE | SE | SE | NE | SE | SE | S G7 | S | S | SW | SW | W | SW | SW | W | W | NW | NW G9 |
| 2 days ago | W | SW | W | W | NW G13 | NW G12 | NW G16 | NW G13 | NW G13 | NW G14 | NW | NW G13 | NW G13 | NW | NW G9 | NW G8 | NW | NW G8 | E | E | -- | -- | SW G5 | SE G5 |
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 | 64 min | SE 3 | 10.00 mi | Fair | 34°F | 24°F | 67% | 1029.5 hPa |
Wind History from ILG (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 | N | N | Calm | Calm | N | NE | E | SE | S | NW | S | NW | N | NW | N | Calm | SW | SW | S | Calm | Calm | NW | SE | |
| 1 day ago | NE | NE | NE | E | E | E | E | E | N | Calm | Calm | W | SE | Calm | Calm | SW | SW | SW | W | W | NW | NW | ||
| 2 days ago | SW | SW | S | SW | NW | NW | NW | NW G18 | NW G17 | NW | NW | NW G20 | NW | NW | NW | NW | N | N | NE | Calm | Calm | Calm | NE | E |
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 DataArtificial Island
Click for Map
Wed -- 05:22 AM EDT -0.56 feet Low Tide
Wed -- 07:05 AM EDT Sunrise
Wed -- 07:08 AM EDT Moonset
Wed -- 10:56 AM EDT 6.82 feet High Tide
Wed -- 05:56 PM EDT -0.61 feet Low Tide
Wed -- 06:55 PM EDT Moonrise
Wed -- 07:13 PM EDT Sunset
Wed -- 09:43 PM EDT Full Moon
Wed -- 11:25 PM EDT 6.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 05:22 AM EDT -0.56 feet Low Tide
Wed -- 07:05 AM EDT Sunrise
Wed -- 07:08 AM EDT Moonset
Wed -- 10:56 AM EDT 6.82 feet High Tide
Wed -- 05:56 PM EDT -0.61 feet Low Tide
Wed -- 06:55 PM EDT Moonrise
Wed -- 07:13 PM EDT Sunset
Wed -- 09:43 PM EDT Full Moon
Wed -- 11:25 PM EDT 6.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| 5.5 | 4.1 | 2.6 | 1.4 | 0.3 | -0.5 | -0.3 | 1.2 | 3.3 | 5.1 | 6.4 | 6.8 | 6.3 | 5 | 3.6 | 2.2 | 1 | -0.1 | -0.6 | 0.2 | 2 | 4 | 5.6 | 6.6 |
Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
EDIT (on/off) Help One Week of DataChesapeake and Delaware Canal
Click for Map
Wed -- 12:54 AM EDT -1.95 knots Max Ebb
Wed -- 04:14 AM EDT 0.08 knots Slack
Wed -- 07:07 AM EDT Sunrise
Wed -- 07:10 AM EDT Moonset
Wed -- 07:14 AM EDT 2.25 knots Max Flood
Wed -- 10:08 AM EDT -0.09 knots Slack
Wed -- 01:19 PM EDT -2.25 knots Max Ebb
Wed -- 04:58 PM EDT 0.02 knots Slack
Wed -- 06:57 PM EDT Moonrise
Wed -- 07:15 PM EDT Sunset
Wed -- 07:47 PM EDT 2.29 knots Max Flood
Wed -- 09:43 PM EDT Full Moon
Wed -- 10:51 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:54 AM EDT -1.95 knots Max Ebb
Wed -- 04:14 AM EDT 0.08 knots Slack
Wed -- 07:07 AM EDT Sunrise
Wed -- 07:10 AM EDT Moonset
Wed -- 07:14 AM EDT 2.25 knots Max Flood
Wed -- 10:08 AM EDT -0.09 knots Slack
Wed -- 01:19 PM EDT -2.25 knots Max Ebb
Wed -- 04:58 PM EDT 0.02 knots Slack
Wed -- 06:57 PM EDT Moonrise
Wed -- 07:15 PM EDT Sunset
Wed -- 07:47 PM EDT 2.29 knots Max Flood
Wed -- 09:43 PM EDT Full Moon
Wed -- 10:51 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| -1.8 | -2 | -1.8 | -1.4 | -0.6 | 1.2 | 1.9 | 2.2 | 2.1 | 1.6 | 0.6 | -1.4 | -2 | -2.2 | -2.2 | -1.9 | -1.4 | 0.2 | 1.6 | 2.2 | 2.3 | 2 | 1.4 | -0.5 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
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.
Link to Loop
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 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. |