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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 6:44AM | Sunset 5:47PM | Friday February 22, 2019 11:01 AM EST (16:01 UTC) | Moonrise 9:35PM | Moonset 8:51AM | Illumination 89% |  |
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 914 Am Est Fri Feb 22 2019
Rest of today..NW winds 5 to 10 kt. Waves 2 ft or less.
Tonight..NE winds around 5 kt. Waves 2 ft or less.
Sat..SE winds 5 to 10 kt. Waves 2 ft or less. A chance of rain late in the morning. Rain in the afternoon.
Sat night..S winds 5 to 10 kt with gusts up to 20 kt. Waves 2 ft or less. Rain.
Sun..SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Gusts up to 30 kt. Waves 2 ft or less, then around 3 ft in the afternoon. Rain likely in the morning.
Sun night..W winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Mon..NW winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Mon night..W winds 15 to 20 kt with gusts up to 30 kt, becoming nw 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 3 ft.
Tue..NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 2 ft or less.
Tue night..NW winds around 5 kt, becoming N after midnight. Waves 2 ft or less.
Rest of today..NW winds 5 to 10 kt. Waves 2 ft or less.
Tonight..NE winds around 5 kt. Waves 2 ft or less.
Sat..SE winds 5 to 10 kt. Waves 2 ft or less. A chance of rain late in the morning. Rain in the afternoon.
Sat night..S winds 5 to 10 kt with gusts up to 20 kt. Waves 2 ft or less. Rain.
Sun..SW winds 15 to 20 kt, becoming W 20 to 25 kt in the afternoon. Gusts up to 30 kt. Waves 2 ft or less, then around 3 ft in the afternoon. Rain likely in the morning.
Sun night..W winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Mon..NW winds 20 to 25 kt with gusts up to 40 kt. Waves 3 to 4 ft.
Mon night..W winds 15 to 20 kt with gusts up to 30 kt, becoming nw 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 3 ft.
Tue..NW winds 5 to 10 kt. Gusts up to 20 kt in the morning. Waves 2 ft or less.
Tue night..NW winds around 5 kt, becoming N after midnight. Waves 2 ft or less.
ANZ400 914 Am Est Fri Feb 22 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will build in from the northwest and west to close out the work week, before moving offshore on Saturday. Strong low pressure lifts northeast across the great lakes over the weekend and its associated fronts will affect our area. More high pressure will build in for the beginning of next week. The next low pressure system may approach from the west and affect the area by next Wednesday.
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will build in from the northwest and west to close out the work week, before moving offshore on Saturday. Strong low pressure lifts northeast across the great lakes over the weekend and its associated fronts will affect our area. More high pressure will build in for the beginning of next week. The next low pressure system may approach from the west and affect the area by next Wednesday.
7 Day Forecast for Marine Location Near Delaware City, DE
Hourly EDIT Helplocation: 39.57, -75.59 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 221418 afdphi area forecast discussion national weather service mount holly nj 918 am est Fri feb 22 2019 Synopsis High pressure will build in from the northwest and west to close out the work week, before moving offshore on Saturday. Strong low pressure lifts northeast across the great lakes over the weekend and its associated fronts will affect our area. More high pressure will build in for the beginning of next week. The next low pressure system may approach from the west and affect the area by next Wednesday. Near term until 6 pm this evening No major changes to the forecast with the mid morning update. Expecting a blissfully quiet day (at least weather-wise) as surface high pressure migrates eastward toward the area with near-zonal flow prevailing aloft on the northern edge of the subtropical atlantic ridge. Little cloud cover is expected for most of the area outside of a fairly abundant cirrus deck and maybe some scattered cold-advection cumulus. High temperatures will remain near normal with highs generally in the mid to upper 40s (30s in the poconos). The rain showers have moved south of the region. Therefore, have lowered pops across DELMARVA through the remainder of the day. Short term 6 pm this evening through 6 pm Saturday Friday night will be quiet weather-wise with the surface high centered just to our north. Light winds with only cirrus will allow for lows to get below freezing in most locations outside of far southern nj southern DELMARVA where temperatures may be a bit warmer due to thicker mid-lvl cloud cover (although this cloud cover could remain just south of the area). Long term Saturday night through Thursday Saturday through Monday... the main story for this period continues to be strong area of low pressure that will affect the area late Saturday through Sunday. To start the period early Saturday, aformentioned low will be developing near the texas panhandle while strong high pressure remains centered over the northeast conus. This high will move offshore through the day while the low moves northeast toward missouri. Expect clouds to increase with rain beginning to move in from SW to ne... Most likely beginning in the mid to late afternoon and reaching the philadelphia area by evening. The airmass ahead of this system won't be very cold with highs Saturday mostly in the 40s so expect precip to be all rain just about everywhere. However the one area of concern will be across the far north from the southern poconos into sussex co. Nj. As precip moves into this area early Saturday evening temperatures may fall to near freezing for a time so there could be a period of freezing rain in spots... Especially the higher elevations. However as the deepening low takes a track well to our north and west into the upper great lakes it will push a warm front through changing precip to all rain by the overnight so don't expect this to be a major or widespread icing event. Otherwise, the rain may fall moderate to even heavy at times as the system will be drawing on lots of moisture from the south. In fact pwats look to reach upwards of 1.5 inches by later Saturday night. A couple limiting factors though for excessive rainfall will be that the main upper level forcing will be well to our north west with this system and the elevated instability looks to stay just to our south. That said, hydro will have to be monitored as there will be rises on rivers and streams with a few of the more sensitive points along the rancocas creek and in the raritan and passaic basins potentially getting into action stage or minor flood stage by late in the weekend into early next week. The heaviest steadiest rain should be tapering off by around midday Sunday as the deep low moves into northern ontario and the system's triple point moves through. Total rain amounts by this time look to generally be .75 up to 1.5 inches with the delmarva into southern nj most favored to get the highest amounts. Beyond this time concern will be strong winds Sunday afternoon and beyond as a deep mixed layer develops with with winds in the boundary layer progged to reach 40-50 knots. We increased the wind gusts with this update as I expect by late afternoon gusts of 40 to 50 mph will be quite possible. Temperatures will be quite mild though with highs generally in the 50s to low 60s. The winds may abate somewhat for a time Sunday night however by |
late night expect another cold front to move through with the pressure gradient tightening up even more as the low moves into the canadian maritimes while the next high moves south into the central conus. It is at this time I expect the best potential for very strong, potentially damaging W NW winds to occur with gusts possibly in the 50 to 60 mph range. This would be beginning near dawn Monday lasting at least through midday. Will continue to highlight this potential in the hwo. Temperatures return to near average for Monday with dry conditions and highs ranging from the 30s across the southern poconos to the 40s elsewhere. Monday night through Thursday... winds abate Monday night with broad high pressure moving in for Tuesday bringing fair, seasonable weather. Forecast uncertainty increases beyond this time as the GFS and the gem bring the next system (a weaker one) in by next Wednesday while the ecmwf maintains high pressure over the area. For this reason we just keep low pops in the forecast for the Wednesday Thursday time frame of next week. Aviation 14z Friday through Tuesday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Today...VFR conditions expected at all terminals with primarily only cirrus. Winds northerly northwesterly under 10 knots. High confidence tonight...VFR, with light northerly or light and variable winds. High confidence. Outlook... Saturday...VFR through most of the day. Restrictions possible late day as rain begins to move in from the sw. Winds SE around 5 knots. Moderate confidence. Saturday night... Cig vsby restrictions expected in rain and fog. Winds E SE 3-8 knots. High confidence. Sunday... Am restrictions in rain, low clouds with pm improvement. W SW winds increasing to 15 to 25 knots with gusts of 30 to 35 knots by late day continuing into the evening. Moderate confidence. Monday...VFR but with strong W NW winds expected at 20-25 potentially gusting 40 to 50 knots. Moderate confidence. Tuesday...VFR with NW winds 5-10 knots. Moderate confidence. Marine A northwest wind 10 to 15 knots is forecast this morning. Wind speeds are expected to fall to 5 to 10 knots by this afternoon. Wave heights on our ocean waters should be 3 to 4 feet this morning, lowering to 2-3 feet by the afternoon. Outlook... Saturday... Sub-sca. Rain possible by late day Saturday. Saturday night thru Sunday... Winds seas increasing with sca conditions possible by late Saturday into early Sunday and gale conditions possible by late day Sunday. Sunday night thru Monday night... W NW gales expected. Storm force winds possible Monday. Tuesday... Winds seas diminish to below SCA levels. Phi watches warnings advisories Pa... None. Nj... None. De... None. Md... None. Marine... None. Synopsis... Fitzsimmons near term... Carr johnson short term... Carr long term... Fitzsimmons aviation... Carr fitzsimmons marine... Carr fitzsimmons |
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 |
| DELD1 - 8551762 - Delaware City, DE | 1 mi | 31 min | N 4.1 G 4.1 | 40°F | 36°F | 1029.6 hPa | ||
| RDYD1 - 8551910 - Reedy Point, DE | 1 mi | 37 min | 1029.1 hPa | |||||
| CHCM2 - 8573927 - Chesapeake City, MD | 12 mi | 31 min | NNE 4.1 G 6 | 43°F | 39°F | 1029.9 hPa | ||
| MRCP1 - 8540433 - Marcus Hook, PA | 19 mi | 31 min | 43°F | 40°F | 1029.1 hPa | |||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 22 mi | 31 min | NNE 7 G 8 | 41°F | 38°F | 1029.2 hPa | ||
| DRSD1 - Delaware Reserve, DE | 34 mi | 151 min | Calm | 43°F | 1028 hPa | 32°F | ||
| PHBP1 - 8545240 - Philadelphia, PA | 35 mi | 31 min | 44°F | 39°F | 1029.2 hPa | |||
| BDSP1 | 39 mi | 31 min | 43°F | 43°F | 1029.7 hPa | |||
| TCBM2 - 8573364 - Tolchester Beach, MD | 43 mi | 31 min | N 8 G 8.9 | 41°F | 40°F | 1029.7 hPa | ||
| BRND1 - 8555889 - Brandywine Shoal Light, DE | 48 mi | 31 min | 1029.6 hPa |
Wind History for Delaware City, DE
(wind in knots) EDIT (on/off) Help| 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 | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | W G6 | SW | NW G14 | NW G13 | NW G16 | NW G14 | NW G8 | NE | -- | SW | NW | W G6 | NW G11 | NW | NW | NW G10 | NW | NW G10 | N | NW | N | N | N | N |
| 1 day ago | E | E | E | E | E | E | E | NE | E | NE | NE | E | NE | N | N | NW | NW | W | SW | W | W | W | NW | W G5 |
| 2 days ago | N G13 | NW | NW G15 | NW G13 | N G15 | NW G12 | NW G12 | NW G7 | NW | N | NW | N | N | N | E | NE | E | NE | E | E G8 | SE | E | E G11 | E G15 |
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 | 8 mi | 70 min | N 4 | 10.00 mi | Fair | 43°F | 21°F | 43% | 1029 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 | W | W | NW | NW G18 | NW | NW | NW | NW | W | W | W | W | W | NW | NW | NW | NW | NW | NW | N | N | NW | N | NW |
| 1 day ago | E | E | E | E | E | E | E | E | NE | NE | NE | NE | N | N | NW | W | W | W | W | W | W | W | SW | Calm |
| 2 days ago | NW | NW | NW G20 | NW G18 | NW | NW | NW | NW | NW | NW | N | N | Calm | Calm | Calm | NE | NE | E | NE | E | E | E | E | NE |
Tide / Current Tables for Pea Patch Island, Bulkhead Shoal Channel, Chesapeake and Delaware Canal, Delaware
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataPea Patch Island
Click for Map
Fri -- 01:07 AM EST 6.00 feet High Tide
Fri -- 06:45 AM EST Sunrise
Fri -- 07:53 AM EST -0.78 feet Low Tide
Fri -- 08:50 AM EST Moonset
Fri -- 01:29 PM EST 6.11 feet High Tide
Fri -- 05:46 PM EST Sunset
Fri -- 08:22 PM EST -0.70 feet Low Tide
Fri -- 09:34 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:07 AM EST 6.00 feet High Tide
Fri -- 06:45 AM EST Sunrise
Fri -- 07:53 AM EST -0.78 feet Low Tide
Fri -- 08:50 AM EST Moonset
Fri -- 01:29 PM EST 6.11 feet High Tide
Fri -- 05:46 PM EST Sunset
Fri -- 08:22 PM EST -0.70 feet Low Tide
Fri -- 09:34 PM EST Moonrise
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 |
| 5.4 | 6 | 5.6 | 4.5 | 3.1 | 1.8 | 0.6 | -0.4 | -0.8 | 0 | 1.8 | 3.7 | 5.1 | 6 | 6 | 5.1 | 3.8 | 2.4 | 1.2 | 0.2 | -0.6 | -0.4 | 0.9 | 2.8 |
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
Fri -- 02:48 AM EST -2.07 knots Max Ebb
Fri -- 06:14 AM EST 0.09 knots Slack
Fri -- 06:46 AM EST Sunrise
Fri -- 08:51 AM EST Moonset
Fri -- 09:12 AM EST 2.24 knots Max Flood
Fri -- 12:08 PM EST -0.09 knots Slack
Fri -- 03:10 PM EST -2.12 knots Max Ebb
Fri -- 05:47 PM EST Sunset
Fri -- 06:42 PM EST 0.01 knots Slack
Fri -- 09:35 PM EST Moonrise
Fri -- 09:37 PM EST 2.23 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:48 AM EST -2.07 knots Max Ebb
Fri -- 06:14 AM EST 0.09 knots Slack
Fri -- 06:46 AM EST Sunrise
Fri -- 08:51 AM EST Moonset
Fri -- 09:12 AM EST 2.24 knots Max Flood
Fri -- 12:08 PM EST -0.09 knots Slack
Fri -- 03:10 PM EST -2.12 knots Max Ebb
Fri -- 05:47 PM EST Sunset
Fri -- 06:42 PM EST 0.01 knots Slack
Fri -- 09:35 PM EST Moonrise
Fri -- 09:37 PM EST 2.23 knots Max Flood
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 |
| -0.4 | -1.5 | -2 | -2.1 | -1.9 | -1.4 | -0.7 | 1.2 | 1.9 | 2.2 | 2.1 | 1.6 | 0.6 | -1.3 | -1.9 | -2.1 | -2 | -1.7 | -1.1 | 0.8 | 1.7 | 2.1 | 2.2 | 1.8 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of 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 (11,2,3,4)
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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. |