Wednesday, August5, 2020
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Marine Weather and Tides
Slaughter Beach, DE

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:05AMSunset 8:10PM Wednesday August 5, 2020 11:51 AM EDT (15:51 UTC) Moonrise 8:41PMMoonset 6:49AM Illumination 97% Phase: Waning Gibbous; Moon at 16 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 1002 Am Edt Wed Aug 5 2020
Rest of today..NW winds around 5 kt, becoming S late. Waves 2 ft or less.
Tonight..S winds around 5 kt. Waves 2 ft or less. A chance of tstms late.
Thu..SE winds around 5 kt. Waves 2 ft or less. A chance of tstms.
Thu night..SE winds 5 to 10 kt. Waves 2 ft or less. A chance of tstms until early morning. Showers likely.
Fri..NE winds around 5 kt. Waves 2 ft or less. Showers likely in the morning, then a chance of tstms in the afternoon.
Fri night..E winds around 5 kt, becoming N after midnight. Waves 2 ft or less. A chance of tstms.
Sat..NE winds around 5 kt. Waves 2 ft or less. A chance of showers in the morning, then a chance of tstms in the afternoon.
Sat night..SE winds around 5 kt, becoming sw after midnight. Waves 2 ft or less. A chance of tstms in the evening.
Sun..N winds around 5 kt, becoming S in the afternoon. Waves 2 ft or less.
Sun night..S winds 5 to 10 kt. Waves 2 ft or less. Winds and waves higher in and near tstms.
ANZ400 1002 Am Edt Wed Aug 5 2020
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure from the midwest will build east today as the remnants of isaias move north into eastern canada. A warm front will move toward the southern portions of the forecast area on Thursday and remain stationary into the weekend. High pressure will then reassert itself across much of the area into next week.


7 Day Forecast for Marine Location Near Slaughter Beach, DE
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location: 38.95, -75.31     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 051342 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 942 AM EDT Wed Aug 5 2020

SYNOPSIS. High pressure from the midwest will build east today as the remnants of Isaias move north into eastern Canada. A warm front will move toward the southern portions of the forecast area on Thursday and remain stationary into the weekend. High pressure will then reassert itself across much of the area into next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Forecast largely on track this morning as high pressure builds in from the west. However, some energy associated with the aforementioned trough could touch off a few isolated showers or a thunderstorm in the southern areas this afternoon. Temperatures are expected to max out in the low 80s north and upper 80s south, which is near to slightly above normal for this time of year.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/. A southwesterly flow at mid-levels of the atmosphere produced by the retreating trough will allow a warm front to approach from the south. An impulse along this front could touch off a few showers and thunderstorms mainly south and east of the I-95 corridor late Wednesday night and on Thursday. High temperatures on Thursday will range from the low to mid 80s, around normal for this time of year.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. Thursday night, surface high pressure will be located over New York with the ridge axis extending west across Michigan. This elongated west/east ridge axis is due to a fractured upper level trough axis with the parent upper level low exiting the Canadian Maritime Provinces with weak mid-level energy located over eastern Ontario. As the remnant energy approaches from the west Friday, weak surface cyclogenesis will occur near central VA with the resultant surface low pressure heading out to sea Saturday morning. Only weak DCVA will accompany the system Friday, but PWATs remain around 1.75" though so another round of precipitation appears likely.

Saturday into Sunday a slightly quieter period will take shape as the mid-level wave exits the region. Behind the wave, weak subsidence will move overhead with PWATs falling off to around 1.4". This will keep the weekend dry, for the most part. Expect temperatures near to slightly above average for this time of year with highs in the mid to upper 80s and lows in the upper 60s.

By Monday the chance of showers and thunderstorms will return to the Delaware Valley as moisture rich air sweeps north. PWATs Monday will approach 1.80", but the apparent lack of forcing has allowed the forecast to be trended towards more of climo perspective. Expect humid conditions Monday and Tuesday with temperatures above normal.

AVIATION /14Z WEDNESDAY THROUGH SUNDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . VFR conditions expected, but a scattered shower or thunderstorm is possible at the southern TAF sites. Winds mostly W to SW at 5 to 10 knots.

Tonight . VFR conditions expected, except in patchy fog during the early morning hours and perhaps a few rain showers late. Mainly light and variable winds.

Thursday . Mainly VFR conditions, but showers and thunderstorms could temporarily reduce vsby and ceiling to MVFR at times, especially in the south. Light and variable winds except in any thunderstorms.

Outlook .

Friday and Saturday . Mostly VFR. Scattered SHRA/TSRA possible each afternoon/evening that would result in brief sub- VFR conditions at a given terminal. Fog may develop during the overnight. Winds east to northeast Friday and Saturday. LGT/VRB at night. Moderate confidence.

Sunday . Winds out of the south with mostly dry and VFR conditions. Moderate confidence.

MARINE. Today . Lingering 5 foot seas in the early morning, then sub-SCA conditions with SW winds around 10 kt. Ocnl gusts to 20 kt possible in the afternoon.

Tonight and Thursday . Sub-advisory winds/seas expected, except in any thunderstorms.

Outlook .

Thursday through Sunday . Sub-advisory winds/seas expected through the period. Chances of showers/storms through the period, especially in the afternoon/evening hours.

Rip Currents .

The rip current risk will likely remain elevated on Wednesday with light winds out of the southwest. On Thursday wave heights will continue to fall towards 2 feet with with light east winds. This will allow for the rip current risk to be low.

HYDROLOGY. Between 3 and 6 inches of rain, with localized amounts of 8 to 9 inches, have fallen across much of southeast Pennsylvania, western New Jersey, and Delmarva. Flooding continues across these areas. Please refer to any Flood Warnings for details.

TIDES/COASTAL FLOODING. The threat for tidal flooding in association with Isaias has come to an end across the area. The coastal flood advisory will expire as scheduled at 6 am. Fresh water runoff will continue today in tidal portions of the Delaware River, but additional tidal flooding is unlikely.

EQUIPMENT. The NOAA Weather Radio All-Hazards broadcast from Hibernia Park Pennsylvania (Station WNG-704) remains off the air.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . None.

Synopsis . Miketta Near Term . MPS Short Term . Miketta Long Term . Haines Aviation . Haines/Miketta Marine . Haines/Miketta Hydrology . WFO PHI Tides/Coastal Flooding . WFO PHI Equipment . WFO PHI


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BRND1 - 8555889 - Brandywine Shoal Light, DE 11 mi57 min NNW 5.1 G 6 1018.5 hPa
LWSD1 - 8557380 - Lewes, DE 15 mi57 min NW 6 G 6 76°F 73°F1018.2 hPa
CMAN4 - 8536110 - Cape May, NJ 19 mi57 min W 4.1 G 6 78°F 72°F1017.8 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 25 mi57 min 78°F 1018.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 44 mi57 min 79°F 83°F1017.5 hPa
OCIM2 - 8570283 - Ocean City Inlet, MD 45 mi57 min SSE 4.1 G 5.1 76°F 66°F1018.8 hPa
DELD1 - 8551762 - Delaware City, DE 46 mi57 min N 1.9 G 6 80°F 77°F1018 hPa
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 47 mi61 min 3 ft
CA2 - 8571892 - Cambridge, MD 48 mi57 min N 5.1 G 6 81°F 84°F1018.2 hPa
CHCM2 - 8573927 - Chesapeake City, MD 48 mi57 min NW 5.1 G 6 79°F 82°F1018.3 hPa

Wind History for Brandywine Shoal Light, DE
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dover Air Force Base, DE16 mi55 minNW 610.00 miFair81°F67°F64%1018.2 hPa
Georgetown - Delaware Coastal Airport, DE17 mi57 minVar 310.00 miFair85°F70°F61%1017.9 hPa

Link to 5 minute data for KDOV

Wind History from DOV (wind in knots)
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S10S8S8S10S7W8W4SW4S4SW5S4CalmNW4NW5NW7NW6NW6
1 day agoS3S7S7SW8E7SE4SW4SW9S8CalmSE5S4S4CalmCalmSE6W5SE3SE18
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S14S13S13S5S5CalmSW10S12SW7SW10SW8W6SW5SW5SW5W6W4Calm

Tide / Current Tables for Mispillion River entrance, Delaware Bay, Delaware
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Mispillion River entrance
Click for Map
Wed -- 05:26 AM EDT     0.13 feet Low Tide
Wed -- 06:06 AM EDT     Sunrise
Wed -- 07:49 AM EDT     Moonset
Wed -- 11:04 AM EDT     4.50 feet High Tide
Wed -- 05:19 PM EDT     0.21 feet Low Tide
Wed -- 08:07 PM EDT     Sunset
Wed -- 09:41 PM EDT     Moonrise
Wed -- 11:21 PM EDT     5.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.24.33.11.80.70.20.20.923.24.14.54.33.72.71.60.70.20.41.12.43.74.95.5

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Wed -- 03:09 AM EDT     -1.52 knots Max Ebb
Wed -- 06:05 AM EDT     Sunrise
Wed -- 06:19 AM EDT     0.00 knots Slack
Wed -- 07:49 AM EDT     Moonset
Wed -- 08:58 AM EDT     1.27 knots Max Flood
Wed -- 11:58 AM EDT     -0.00 knots Slack
Wed -- 03:16 PM EDT     -1.19 knots Max Ebb
Wed -- 05:58 PM EDT     0.00 knots Slack
Wed -- 08:06 PM EDT     Sunset
Wed -- 09:05 PM EDT     1.55 knots Max Flood
Wed -- 09:39 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.8-1.3-1.5-1.4-0.9-0.20.51.11.31.10.6-0-0.6-1-1.2-1.1-0.600.71.31.61.40.9

Weather Map
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wmap_A
GEOS 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 (11,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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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 numerous 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.