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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 7:16AM | Sunset 5:04PM | Thursday January 17, 2019 4:37 AM EST (09:37 UTC) | Moonrise 2:48PM | Moonset 4:22AM | Illumination 86% |  |
ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 322 Am Est Thu Jan 17 2019
Today..N winds 10 to 15 kt, becoming E 5 to 10 kt late this morning and afternoon. Waves around 3 ft early this morning, then 2 ft or less.
Tonight..SE winds 5 to 10 kt. Waves 2 ft or less. A chance of rain late in the evening. Rain likely after midnight. Vsby 1 to 3 nm late in the evening.
Fri..W winds 5 to 10 kt. Waves 2 ft or less. A chance of rain early in the morning.
Fri night..NW winds 5 to 10 kt, becoming N late. Waves 2 ft or less.
Sat..NE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 ft or less, then around 3 ft in the afternoon. A chance of rain in the afternoon.
Sat night..SE winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 4 ft. Rain.
Sun..SW winds 15 to 20 kt, becoming nw 20 to 25 kt in the afternoon. Waves 3 to 4 ft. Rain in the morning, then rain and snow in the afternoon with vsby 1 to 3 nm.
Sun night..NW winds 25 to 30 kt. Waves 3 to 5 ft. Rain and snow in the evening with vsby 1 to 3 nm.
Mon..NW winds 20 to 25 kt. Waves 3 to 4 ft.
Mon night..NW winds 20 to 25 kt, diminishing to 10 to 15 kt after midnight. Waves 3 to 4 ft.
Today..N winds 10 to 15 kt, becoming E 5 to 10 kt late this morning and afternoon. Waves around 3 ft early this morning, then 2 ft or less.
Tonight..SE winds 5 to 10 kt. Waves 2 ft or less. A chance of rain late in the evening. Rain likely after midnight. Vsby 1 to 3 nm late in the evening.
Fri..W winds 5 to 10 kt. Waves 2 ft or less. A chance of rain early in the morning.
Fri night..NW winds 5 to 10 kt, becoming N late. Waves 2 ft or less.
Sat..NE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 ft or less, then around 3 ft in the afternoon. A chance of rain in the afternoon.
Sat night..SE winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 4 ft. Rain.
Sun..SW winds 15 to 20 kt, becoming nw 20 to 25 kt in the afternoon. Waves 3 to 4 ft. Rain in the morning, then rain and snow in the afternoon with vsby 1 to 3 nm.
Sun night..NW winds 25 to 30 kt. Waves 3 to 5 ft. Rain and snow in the evening with vsby 1 to 3 nm.
Mon..NW winds 20 to 25 kt. Waves 3 to 4 ft.
Mon night..NW winds 20 to 25 kt, diminishing to 10 to 15 kt after midnight. Waves 3 to 4 ft.
ANZ400 322 Am Est Thu Jan 17 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure ridging across the area today will move offshore tonight. Low pressure and an associated cold front will cross the area tonight and early Friday. More high pressure will follow for Friday night and Saturday morning. A significant low pressure system will cross the middle atlantic region Saturday night and Sunday. Arctic high pressure will move in for the beginning of next week. Another storm may affect the region for the middle of next week.
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure ridging across the area today will move offshore tonight. Low pressure and an associated cold front will cross the area tonight and early Friday. More high pressure will follow for Friday night and Saturday morning. A significant low pressure system will cross the middle atlantic region Saturday night and Sunday. Arctic high pressure will move in for the beginning of next week. Another storm may affect the region for the middle of next week.
7 Day Forecast for Marine Location Near Cape May Point , NJ
Hourly EDIT Helplocation: 38.95, -74.97 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 170836 afdphi area forecast discussion national weather service mount holly nj 336 am est Thu jan 17 2019 Synopsis High pressure ridging across the area today will move offshore tonight. Low pressure and an associated cold front will cross the area tonight and early Friday. More high pressure will follow for Friday night and Saturday morning. A significant low pressure system will cross the middle atlantic region Saturday night and Sunday. Arctic high pressure will move in for the beginning of next week. Another storm may affect the region for the middle of next week. Near term until 6 pm this evening The cold front is finally making some progress across the CWA early this morning, now generally south of the mason-dixon line. Near and upstream of the front, skies rapidly clear (at least initially), and dew points begin to drop. Downstream, a residual low cloud deck is keeping temperatures much warmer (generally around or above freezing), and winds remain more westerly or even southwesterly. Given that models are struggling with the progress of the front, their temp dew point output is not verifying well, especially where the lower clouds have persisted most of the night so far. Have needed to make several adjustments to both fields the past few hours, but given the poor depiction of the front's progress so far, have very little confidence in hourly temperatures dew points the rest of the night. Most assuredly, this low confidence also applies to sky cover, with the low cloud deck to the south of the front poorly modeled in general and smaller areas of low clouds to the north not simulated well at all. Expecting an increase in high clouds late tonight as a weak perturbation approaches the area. Large-scale lift via differential cyclonic vorticity advection aloft will continue to aid in the increase and lowering of cloud cover during the day, combined with increasing low-level isentropic ascent late. Any residual cold advection from the cold front passing through the area early this morning will cease rather quickly, but the increased cloud cover should prevent much surface warming. Once again, weighted the MAX temperature forecast toward the cold (i.E., ecs and met mos) statistical guidance. There should be little diurnal upswing today given the above. No precipitation is expected through late this afternoon, though some light snow should be on the western doorstep by early evening. Short term 6 pm this evening through 6 pm Friday A weak midlevel perturbation will be moving through the region tonight, and large-scale lift immediately downstream will generate light snow for much of the night across the area. The low levels will be dry initially, but fairly potent warm advection in combination with some jet dynamics (via the left exit region of a 250-mb jet streak approaching the southeast coast) will be the sufficient ingredients for the precipitation. Surface temperatures near and east of the urban corridor will be near freezing, so there will likely be a mix of rain and snow in portions of new jersey and also delmarva. To the north and west, conditions look cold enough for snow throughout the event. The consensus QPF is generally 0.1-0.2 inches, so snow amounts of 1- 2 inches seem probable northwest of the urban corridor, with lesser amounts southeast where surface temperatures will be at least flirting with freezing and precipitation may begin to mix with rain. Notably, I sided with the somewhat colder guidance (nam, rgem, cmc, |
icon), as the GFS tends to be too aggressive scouring the near- surface cold air too quickly. Confidence is on the low side, though, since antecedent cloud cover may prevent much of a temperature fall from today's readings (which should be above freezing southeast of the fall line). Presumably, sublimation and wet-bulbing effects will cool the low-level profiles sufficiently for mostly snow in the urban corridor into adjacent portions of new jersey southeast of i- 295. However, the stout warm advection will be warming the profile with time, so some transition to rain should be expected near the coast and (with time) farther to the northwest. As such, kept totals generally less than an inch southeast of i-95 (to basically nothing near the immediate coast). Not expecting much besides rain or snow, though there is a chance the warming aloft could precede that at the surface, giving a small window of sleet or freezing rain in delmarva and new jersey. Any effects should be minimal and short-lived, though, and confidence is not high enough for inclusion in the forecast. The timing of the precipitation looks to be after the Thursday evening rush and before the Friday morning rush. Combined with the sub-advisory snow totals expected, feel there is no need for headlines with this event at this time, though cannot completely rule it out in later forecasts. Untreated roads will likely be snow- covered on Friday morning, however, so some travel impacts should be expected, especially northwest of the urban corridor. Precipitation rapidly moves eastward Friday morning, and the afternoon should be dry everywhere. Sky cover is expected to diminish with time (except for the northwest cwa), and temperatures will likely warm above freezing in most locations by afternoon. I did keep the MAX temperature forecast on the low side of guidance, given that snow may curtail some of the diurnal heating and cloud cover may linger longer than currently expected. Long term Friday night through Wednesday High pressure across the area for Friday night and early Saturday will move away Saturday afternoon. Fair weather for these time periods with increasing clouds Saturday. Temperatures a little below normal with 20s Friday night and 30s (north) and low 40s (south) for Saturday. The big action of the long term begins later Saturday as strengthening low pressure advances across the tn valley then across va nj by Sunday morning. Significant moisture and dynamics will produce abundant amounts of precipitation across the forecast area. Overall (melted) QPF is in the 1.5 to 3.0 inch range for the period ending 00z Monday. The 3 major op models have the greatest qpf across cntrl nj with the ec having the greatest totals and the canadian and gfe about 25% to 50% less. Much of what will fall across the delaware valley and S E will be rain while the southern poconos and NRN nj will have mostly snow. Significant totals are expected for this (3rd) day event so while watches have not been issued now (mainly not to confuse issues with the short near system), we are rather confident that they will be issued later today or tonight, at least of the N W areas. Snowfall in these areas could easily be 6 to 10 inches thru Sunday. Other factors to consider will be how much mixed precip (sleet or perhaps some freezing rain) may occur Saturday afternoon and evening as the warmer air arrives. Behind the departing low Sunday, much colder air is ushered southward across the region. Temperatures at dawn Sunday will be the highs for the day and readings will fall 15 to 30 degrees by sunset, reaching the teens (north) and 20s (s e). Wind chills will become dangerously cold by Sunday evening and a quick freeze of standing water is expected. Prepare now (!) for several days of dangerous cold, large icy patches on roads (even where precip is all rain) and significant amounts of snow the N W areas. A good reference to prepare is : https: |
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 |
| CMAN4 - 8536110 - Cape May, NJ | 1 mi | 38 min | Calm G 1 | 38°F | 39°F | 1025.9 hPa (+0.7) | ||
| BRND1 - 8555889 - Brandywine Shoal Light, DE | 8 mi | 38 min | 1026.9 hPa (+0.8) | |||||
| LWSD1 - 8557380 - Lewes, DE | 14 mi | 38 min | WNW 6 G 6 | 37°F | 39°F | 1026.5 hPa (+0.5) | ||
| DRSD1 - Delaware Reserve, DE | 27 mi | 128 min | W 1 | 34°F | 1026 hPa | 25°F | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 33 mi | 38 min | N 9.9 G 11 | 36°F | 40°F | 1026.5 hPa (+1.2) | ||
| 44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ | 37 mi | 48 min | 45°F | 3 ft | 1026.1 hPa (+0.3) | |||
| ACYN4 - 8534720 - Atlantic City, NJ | 41 mi | 38 min | 33°F | 40°F | 1026.7 hPa (+1.2) | |||
| OCIM2 - 8570283 - Ocean City Inlet, MD | 43 mi | 38 min | NNW 2.9 G 4.1 | 34°F | 41°F | 1026.8 hPa (+0.0) | ||
| OCSM2 | 43 mi | 158 min | 2 ft | |||||
| JCRN4 - Jacques Cousteau Reserve, NJ | 49 mi | 68 min | WNW 2.9 | 29°F | 1026 hPa | 23°F |
Wind History for Cape May, NJ
(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 | W | W G16 | W | W | NW | W | NW G9 | NW G15 | NW | NW G13 | NW G15 | NW G16 | NW G17 | NW G11 | W G11 | NW | NW | -- | NW G13 | NW G14 | NW G15 | NW G6 | W G7 | -- |
| 1 day ago | NW G8 | NW G10 | N G10 | N G13 | N G12 | N G14 | N G13 | NW G6 | NW G10 | NW G11 | NW G10 | NW G12 | NW G11 | NW G13 | NW G11 | N G9 | NW G6 | NW | W | W | W | W | W | W |
| 2 days ago | N G15 | N G14 | N G14 | N G16 | N G16 | N G12 | N G10 | N G14 | N G9 | N G8 | NW G9 | NW G8 | NW G9 | N G12 | N G13 | NW G8 | NW G10 | NW G10 | NW G8 | NW G11 | NW G11 | NW G8 | NW G8 | NW G8 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Wildwood, Cape May County Airport, NJ | 6 mi | 43 min | N 3 | 10.00 mi | Overcast | 37°F | 27°F | 67% | 1026.8 hPa |
Wind History from WWD (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 | SW | W | W | W | W | W | W | W G15 | NW G15 | W | W | W | W | W | W | W | NW | NW | W | W | W | N | N | N |
| 1 day ago | NW | NW | NW | NW | NW | NW | NW | W | W | NW | W | W | NW | NW | N | Calm | Calm | Calm | Calm | Calm | W | SW | W | |
| 2 days ago | N G16 | N G16 | N G15 | N G16 | N | N G15 | N G14 | N | N | N | NW | NW | NW | NW | NW | NW | NW | NW | Calm | Calm | NW | NW | Calm | NW |
Tide / Current Tables for Cape May Point, Sunset Beach, Delaware Bay, New Jersey
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataCape May Point
Click for Map
Thu -- 03:21 AM EST Moonset
Thu -- 04:46 AM EST 5.07 feet High Tide
Thu -- 07:16 AM EST Sunrise
Thu -- 11:00 AM EST 0.07 feet Low Tide
Thu -- 01:48 PM EST Moonrise
Thu -- 05:03 PM EST Sunset
Thu -- 05:06 PM EST 3.97 feet High Tide
Thu -- 10:59 PM EST -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 03:21 AM EST Moonset
Thu -- 04:46 AM EST 5.07 feet High Tide
Thu -- 07:16 AM EST Sunrise
Thu -- 11:00 AM EST 0.07 feet Low Tide
Thu -- 01:48 PM EST Moonrise
Thu -- 05:03 PM EST Sunset
Thu -- 05:06 PM EST 3.97 feet High Tide
Thu -- 10:59 PM EST -0.35 feet Low 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 |
| 0.9 | 2 | 3.1 | 4.2 | 4.9 | 5.1 | 4.6 | 3.8 | 2.6 | 1.3 | 0.4 | 0.1 | 0.3 | 1 | 1.9 | 2.9 | 3.6 | 4 | 3.8 | 3.1 | 2.1 | 0.9 | -0 | -0.4 |
Tide / Current Tables for Delaware Bay Entrance, Delaware Current
EDIT (on/off) Help One Week of DataDelaware Bay Entrance
Click for Map
Thu -- 02:47 AM EST 1.53 knots Max Flood
Thu -- 03:21 AM EST Moonset
Thu -- 06:06 AM EST -0.00 knots Slack
Thu -- 07:16 AM EST Sunrise
Thu -- 09:51 AM EST -1.41 knots Max Ebb
Thu -- 12:48 PM EST 0.00 knots Slack
Thu -- 01:49 PM EST Moonrise
Thu -- 03:34 PM EST 1.20 knots Max Flood
Thu -- 05:04 PM EST Sunset
Thu -- 06:31 PM EST -0.00 knots Slack
Thu -- 09:55 PM EST -1.21 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:47 AM EST 1.53 knots Max Flood
Thu -- 03:21 AM EST Moonset
Thu -- 06:06 AM EST -0.00 knots Slack
Thu -- 07:16 AM EST Sunrise
Thu -- 09:51 AM EST -1.41 knots Max Ebb
Thu -- 12:48 PM EST 0.00 knots Slack
Thu -- 01:49 PM EST Moonrise
Thu -- 03:34 PM EST 1.20 knots Max Flood
Thu -- 05:04 PM EST Sunset
Thu -- 06:31 PM EST -0.00 knots Slack
Thu -- 09:55 PM EST -1.21 knots Max Ebb
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 |
| 0.3 | 1 | 1.4 | 1.5 | 1.2 | 0.7 | 0.1 | -0.6 | -1 | -1.3 | -1.4 | -1.2 | -0.6 | 0.1 | 0.7 | 1.1 | 1.2 | 0.8 | 0.3 | -0.3 | -0.8 | -1.1 | -1.2 | -1 |
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.
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. |