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Marine Weather and Tides
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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 5:31AM | Sunset 8:31PM | Monday June 17, 2019 7:12 AM EDT (11:12 UTC) | Moonrise 7:56PM | Moonset 4:48AM | Illumination 100% |  |
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 620 Am Edt Mon Jun 17 2019
Today..NW winds around 5 kt, becoming se early this afternoon, then increasing to 5 to 10 kt late. Waves 2 ft or less. A slight chance of showers and tstms early this morning. A chance of showers and tstms this afternoon. Vsby 1 to 3 nm early this morning.
Tonight..SW winds 5 to 10 kt. Waves 2 ft or less. Tstms likely in the evening. Showers likely. A chance of tstms after midnight.
Tue..SW winds around 5 kt. Waves 2 ft or less. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon.
Tue night..SW winds around 5 kt. Waves 2 ft or less. A chance of tstms early in the evening. Showers likely.
Wed..S winds around 5 kt. Waves 2 ft or less. Showers likely. A chance of tstms in the afternoon.
Wed night..S winds around 5 kt, becoming sw after midnight. Waves 2 ft or less. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight.
Thu..W winds around 5 kt, becoming S in the afternoon. Waves 2 ft or less. A chance of showers. A chance of tstms in the afternoon.
Thu night..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of tstms in the evening. Showers likely.
Fri..W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 ft or less. A chance of showers in the morning.
Fri night..NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 ft or less. Winds and waves higher in and near tstms.
Today..NW winds around 5 kt, becoming se early this afternoon, then increasing to 5 to 10 kt late. Waves 2 ft or less. A slight chance of showers and tstms early this morning. A chance of showers and tstms this afternoon. Vsby 1 to 3 nm early this morning.
Tonight..SW winds 5 to 10 kt. Waves 2 ft or less. Tstms likely in the evening. Showers likely. A chance of tstms after midnight.
Tue..SW winds around 5 kt. Waves 2 ft or less. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon.
Tue night..SW winds around 5 kt. Waves 2 ft or less. A chance of tstms early in the evening. Showers likely.
Wed..S winds around 5 kt. Waves 2 ft or less. Showers likely. A chance of tstms in the afternoon.
Wed night..S winds around 5 kt, becoming sw after midnight. Waves 2 ft or less. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight.
Thu..W winds around 5 kt, becoming S in the afternoon. Waves 2 ft or less. A chance of showers. A chance of tstms in the afternoon.
Thu night..SW winds 5 to 10 kt. Waves 2 ft or less. A chance of tstms in the evening. Showers likely.
Fri..W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 ft or less. A chance of showers in the morning.
Fri night..NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 2 ft or less. Winds and waves higher in and near tstms.
ANZ400 620 Am Edt Mon Jun 17 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A quasi-stationary frontal boundary will remain in place across the northern mid-atlantic through much of the upcoming work week. SEveral waves of low pressure are expected to develop along this boundary and pass across the region leading to several rounds of showers and Thunderstorms through late this week. A stronger system and frontal boundary will pass through the region late Thursday into early Friday resulting in quieter weather in its wake.
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A quasi-stationary frontal boundary will remain in place across the northern mid-atlantic through much of the upcoming work week. SEveral waves of low pressure are expected to develop along this boundary and pass across the region leading to several rounds of showers and Thunderstorms through late this week. A stronger system and frontal boundary will pass through the region late Thursday into early Friday resulting in quieter weather in its wake.
7 Day Forecast for Marine Location Near Fairton, NJ
Hourly EDIT Helplocation: 39.38, -75.24 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 171031 afdphi area forecast discussion national weather service mount holly nj 631 am edt Mon jun 17 2019 Synopsis A quasi-stationary frontal boundary will remain in place across the northern mid-atlantic through much of the upcoming work week. Several waves of low pressure are expected to develop along this boundary and pass across the region leading to several rounds of showers and thunderstorms through late this week. A stronger system and frontal boundary will pass through the region late Thursday into early Friday resulting in quieter weather in its wake. Near term through tonight 630 am update: made some minor adjustments to pops this morning based on the latest radar trends with the decaying precipitation to our west. Looks like we will see a lull this morning before the next round of storms occurs this afternoon evening. The 06z model suite is showing a fairly similar convective evolution to the 00z models, with the NAM nest and hrrr indicating about the southern two-thirds of the area will see numerous strong to severe storms this afternoon. There are mixed signals regarding convective mode now, with some potential for quasi-discrete storms mixed with more organized line segments clusters. This morning's soundings may shed some light on this potential (via analysis of shear and midlevel lapse rates), but suspect that hail potential is relatively modest given antecedent convection modifying the midlevel thermodynamic characteristics (i.E., warming and moistening). Notably, the 00z WRF simulations are much farther north with the convection this afternoon tonight, and this is plausible since the models were generally too far south with the precipitation frontal placement on Sunday. Should this trend continue, may need to expand the flash flood watch northward. Previous discussion... this was not the night I was expecting. After the mesoscale convective system (mcs) moved through the region last evening (albeit relatively weak owing to poor midlevel lapse rates from antecedent clouds precipitation), convection began to develop in northern DELMARVA and southern new jersey. Then it re-initiated again a couple hours later. The storms had fairly similar representation on radar: cores of 50+-dbz echo to about 20 kft that were demonstrably capable of producing strong to severe surface gusts. This made for a busy night, with several warnings issued and quite a few reports of 50+ mph gusts, especially in the atlantic city and tuckerton areas. Meanwhile, a decaying MCS upstream is being handled poorly by the hi- res guidance this morning. Precipitation is reaching northeast maryland at this time, albeit in a weakening state. Had to bump pops early this morning for this potential, though did not get too crazy. Meanwhile, where precipitation occurred earlier and where it is not occurring now, locally dense fog has developed and will likely continue off-and-on through early morning. Added mention of this to the grids. The morning may have a bit of a lull (depending on what happens to the upstream mcs... Not a sure thing). Thereafter, yet another perturbation awaits upstream, and its timing is quite favorable for a round of strong severe convection this afternoon evening across the southern half or so of the cwa. As with Sunday's convective evolution, two questions are key. (1) will antecedent clouds precipitation mitigate more significant destabilization, as what appeared to be the case on Sunday? (2) what will the track of the vort MAX be (and its position relative to the quasi-stationary surface front)? The first question will determine the severity of the convection (and to some degree, the extent). The second question will determine placement. Hi-res convection-allowing guidance is decently similar in depicting the southern half to two-thirds of the area receiving a strong to potentially severe MCS during the afternoon evening. Notably, the hrrr appears more cellular with the convection, which is plausible if stronger surface heating is observed. My suspicion, though, is that there will be some effects from predecessor clouds precipitation this morning, which may ultimately contribute to a fast transition of cells to a convective system. Models are depicting rather meager buoyancy in the midlevels (similar to what transpired Sunday), which may mitigate to some degree a greater severe threat. However, shear looks a little stronger today, which may counter the potentially poor midlevel lapse rates to some degree. Additionally, models have been much more consistent generating strong convection with a fairly strong cold pool (thanks to fairly steep low-level lapse rates) with today's event. As a result, think the potential for severe storms today is a higher than Sunday. Damaging winds appear to be the main threat. Another clear signal is the more favorable environment for heavy rainfall. Pws exceeding 2 inches, a stalling boundary, and cold pools that may regenerate convection on the upshear side all favor locally excessive rainfall should sustained vigorous convection develop and favor training (say, on the southern side of a convective system). Additionally, upstream rounds of precipitation may affect the area tonight (hinted at by the WRF and NAM nest, at least). For these reasons, have issued a flash flood watch for the southern two-thirds of the area beginning at noon today and continuing through tonight. The temperature forecast is a statistical blend and close to continuity. Short term Tuesday Another day with the unsettled pattern and more scattered showers and tstms with areas of heavy rains expected. The spc |
day2 outlook has marginal risk for svr tstms across the southern 1 2 - 2 3rds of the cwa. Heavy rains will again be a threat and the flash flood watch could be extended in time to cover Tuesday. Temperatures will be close to normal with highs in the low mid 80s and lows in the low mid 60s N W and close to 70 for metro philadelphia and across delmarva. Long term Tuesday night through Sunday The beginning of the long range was modified overnight, but lack of time precluded many changes after day3. Minor changes were made to temps Tue wed. Highs will continue to be within a few degrees of normal while lows will be above normal. Pops were brought up a bit in the period to align better with nearby offices. Mostly low likely pops in these periods. Previous discussion: global guidance indicates much of the eastern CONUS will remain in quasi-zonal upper to mid-level flow through late Thursday with numerous shortwave troughs and perturbations propagating through the flow during that time. At the surface, a quasi-stationary frontal boundary will remain in place across the region generally near the northern part of the forecast area. This pattern will result in a few rounds of showers and storms through late Thursday. As typical with this type of pattern, global scale guidance does not handle the details of convective evolution of timing very well, neither do mesoscale model beyond about 24-36 hours. Therefore the timing, evolution, and strength of showers and storms remains uncertain through much of the long term at this time. That being said, a few rounds of convection during this time may bring the potential for strong to severe thunderstorm and or flash flooding. The details on the evolution of the convection will be better resolved in the short near term (24-48 hours) time period. By early Friday, a stronger system looks to push through the region ahead of a higher amplitude medium wave trough. This will bring an end to the active period we have ahead of us this week. Some low chances for showers and or storms appear to return into the weekend. As previously mentioned, most of the area will be in the vicinity of a weak frontal boundary with southerly to westerly flow along and south of it. This will result in dewpoints in the upper 60s to around 70 degrees and temps roughly within a few degrees of normal. Persistent, although intermittent, cloud cover will moderate temps such that night time lows will be relatively warm (mostly upper 60s) and daytime highs relatively cool (mostly low 80s) compared to climatological normals. Honestly not too bad considering the time of year! Aviation 12z Monday through Friday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Today... Patchy fog early. Scattered showers early kilg-kmiv- kacy. A period ofVFR expected this morning in many areas. This afternoon showers and tstms will impact many of the TAF sites with MVFR ifr possible. The 12z tafs will further refine the details, which are somewhat uncertain attm. Tonight... Continued impacts of showers tstms expected to continue with heavy rains and ifr conditions possible at times. Outlook... Tuesday through Friday... An unsettled and stormy pattern is expected through late week. MainlyVFR conditions are expected outside any showers and storms, however showers and storms may briefly lower conditions to sub-vfr at times. Winds generally from the west or south around 5-10 kts. High confidence on the overall pattern, but low confidence on timing of precipitation. Marine Winds and seas are expected to remain below SCA conditions today and tonight, although seas may touch 5 ft at 44009 for a few hours early this morning. The trend in both winds and seas will continue to subside. The main marine hazard today and tonight will be the possibility of storms that could contain gusty winds. Smw products will probably be issued later today and tonight. Outlook... Tuesday through Friday night... Sub-advisory conditions are expected through the outlook period, however seas and winds may be high in and around scattered showers and thunderstorms through the period. Seas may build to 4-5 feet Thursday night. Phi watches warnings advisories Pa... Flash flood watch from noon edt today through late tonight for paz060-061-070-071-101>106. Nj... Flash flood watch from noon edt today through late tonight for njz009-010-012>027. De... Flash flood watch from noon edt today through late tonight for dez001>004. Md... Flash flood watch from noon edt today through late tonight for mdz008-012-015-019-020. Marine... None. Synopsis... O'hara staarmann near term... Cms short term... Johnson o'hara long term... O'hara staarmann aviation... O'hara staarmann marine... Cms o'hara staarmann |
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 |
| JCRN4 - Jacques Cousteau Reserve, NJ | 42 mi | 103 min | WSW 2.9 | 63°F | 1012 hPa |
Wind History for Ship John Shoal, NJ
(wind in knots) EDIT (on/off) Help| 9 PM | 10 PM | 11 PM | 12 AM | -12 PM | -12 PM | 3 AM | -12 PM | -12 PM | 6 AM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | 4 PM | -12 PM | -12 PM | -12 PM | 8 PM | |
| Last 24hr | SW | SW | SW | SW | SW | SW G12 | SW G23 | S | ||||||||||||||||
| 1 day ago | SW | SW | W G23 | W G24 | W | W G26 | W | W G29 | W G26 | NW | NW G22 | NW G24 | W | W G14 | W G9 | |||||||||
| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Millville, Millville Municipal Airport, NJ | 9 mi | 19 min | W 3 | 8.00 mi | Fair | 72°F | 71°F | 97% | 1013.7 hPa |
| Dover Air Force Base, DE | 21 mi | 17 min | SW 3 | 10.00 mi | A Few Clouds | 74°F | 69°F | 86% | 1014.2 hPa |
Wind History from MIV (wind in knots)
| 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 | 5 AM | 6 AM | 7 AM | |
| Last 24hr | SW G15 | S G17 | SW G16 | SW G17 | SW G21 | SW | SW | SW | W | W | Calm | SW | Calm | Calm | Calm | Calm | W | W | SW | W | ||||
| 1 day ago | Calm | SW | SW G14 | SW G17 | SW G17 | SW G22 | SW G16 | SW | SW | SW | SW | |||||||||||||
| 2 days ago | W | W G26 | W | W G22 | W G29 | W G20 | NW G27 | W G24 | W G22 | W G28 | W G25 | W | SW | SW | Calm | Calm | SW | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
Tide / Current Tables for Tindalls Wharf, Cohansey River, Delaware Bay, New Jersey
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTindalls Wharf
Click for Map
Mon -- 12:41 AM EDT 7.25 feet High Tide
Mon -- 04:31 AM EDT Full Moon
Mon -- 05:33 AM EDT Sunrise
Mon -- 05:48 AM EDT Moonset
Mon -- 06:40 AM EDT 0.05 feet Low Tide
Mon -- 01:10 PM EDT 6.11 feet High Tide
Mon -- 06:40 PM EDT 0.45 feet Low Tide
Mon -- 08:30 PM EDT Sunset
Mon -- 08:55 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:41 AM EDT 7.25 feet High Tide
Mon -- 04:31 AM EDT Full Moon
Mon -- 05:33 AM EDT Sunrise
Mon -- 05:48 AM EDT Moonset
Mon -- 06:40 AM EDT 0.05 feet Low Tide
Mon -- 01:10 PM EDT 6.11 feet High Tide
Mon -- 06:40 PM EDT 0.45 feet Low Tide
Mon -- 08:30 PM EDT Sunset
Mon -- 08:55 PM EDT 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 |
| 7.1 | 7.2 | 6.2 | 4.6 | 3.2 | 1.8 | 0.4 | 0.1 | 0.8 | 2 | 3.4 | 4.6 | 5.6 | 6.1 | 5.6 | 4.3 | 2.8 | 1.7 | 0.7 | 0.5 | 1.2 | 2.6 | 4.1 | 5.4 |
Tide / Current Tables for Newport Landing, Nantuxent Creek, Delaware Bay, New Jersey
EDIT (on/off) Help One Week of DataNewport Landing
Click for Map
Mon -- 04:31 AM EDT Full Moon
Mon -- 05:33 AM EDT Sunrise
Mon -- 05:48 AM EDT Moonset
Mon -- 06:14 AM EDT 0.03 feet Low Tide
Mon -- 12:06 PM EDT 4.15 feet High Tide
Mon -- 06:14 PM EDT 0.31 feet Low Tide
Mon -- 08:29 PM EDT Sunset
Mon -- 08:55 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 04:31 AM EDT Full Moon
Mon -- 05:33 AM EDT Sunrise
Mon -- 05:48 AM EDT Moonset
Mon -- 06:14 AM EDT 0.03 feet Low Tide
Mon -- 12:06 PM EDT 4.15 feet High Tide
Mon -- 06:14 PM EDT 0.31 feet Low Tide
Mon -- 08:29 PM EDT Sunset
Mon -- 08:55 PM EDT 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 |
| 4.9 | 4.3 | 3.3 | 2.4 | 1.5 | 0.7 | 0.1 | 0.2 | 1 | 2 | 3 | 3.8 | 4.1 | 3.8 | 3 | 2.1 | 1.4 | 0.8 | 0.3 | 0.5 | 1.4 | 2.5 | 3.5 | 4.3 |
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 (7,2,3,4)
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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. |