Saturday, July4, 2020
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Marine Weather and Tides
Millsboro, 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 5:42AMSunset 8:31PM Saturday July 4, 2020 6:55 AM EDT (10:55 UTC) Moonrise 7:21PMMoonset 3:57AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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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ANZ455 Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 618 Am Edt Sat Jul 4 2020
Today..NE winds around 10 kt. Seas around 3 ft. SWell mainly from the se with a dominant period of 8 seconds.
Tonight..E winds 5 to 10 kt, becoming nw late. Seas around 3 ft. SWell mainly from the se with a dominant period of 9 seconds.
Sun..NW winds around 5 kt, becoming E around 5 kt late in the morning, then becoming S in the afternoon. Seas 2 ft or less. SWell mainly from the se with a dominant period of 9 seconds.
Sun night..SW winds 10 to 15 kt. Seas 2 ft or less. SWell mainly from the se with a dominant period of 9 seconds.
Mon..SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft or less.
Mon night..S winds 5 to 10 kt. Seas 2 ft or less.
Tue..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 3 ft.
Tue night..S winds 10 to 15 kt. Seas around 3 ft.
Wed..S winds 10 to 15 kt. Seas around 3 ft.
Wed night..S winds 10 to 15 kt. Seas around 3 ft.
ANZ400 618 Am Edt Sat Jul 4 2020
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A backdoor cold front will push to our south through today. Another weak backdoor front may move into the area Sunday into Monday, before lifting back northward into Tuesday. A very warm and humid week is expected next week as a southerly flow develops, although there is the potential for a coastal low along the east coast late next week.


7 Day Forecast for Marine Location Near Millsboro, DE
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location: 38.59, -75.3     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 041017 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 617 AM EDT Sat Jul 4 2020

SYNOPSIS. A backdoor cold front will push to our south through today. Another weak backdoor front may move into the area Sunday into Monday, before lifting back northward into Tuesday. A very warm and humid week is expected next week as a southerly flow develops, although there is the potential for a coastal low along the east coast late next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. Morning forecast largely on track. Some patchy fog has developed, but that will burn off through the morning. Cold through most of New Jersey and eastern Pennsylvania, and will continue to sag south through Delmarva. The front will be across the mid-Atlantic later this morning. With onshore flow, clouds will remain across much of the region this morning before gradually lifting and dissipating in the afternoon. A cooler airmass will spread south, and highs today will top off in the mid to upper 80s, except for the mountains and coastal areas, which will top off in the upper 70s to low 80s. Surface dew points will only minimally drop, from the upper 60s to around 70 to the mid and upper 60s.

Some strong shortwave energy will pass through the region later today. There should be a good deal of CAPE, generally upwards of 1500 or so J/kg of surface-based CAPE, a good deal of moisture, but not much lift. Will keep PoPs capped at slight chance, as some widely isolated showers and thunderstorms are possible with its passage.

SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SUNDAY/. High pressure continues to build east tonight. Skies clear out, and winds drop off and become nearly calm.

With abundant low level moisture due to surface dew points in the mid to upper 60s, light winds, and nearly calm winds, can expect at least patchy fog to develop, especially away from the urban corridor, and in the Pine Barrens of New Jersey.

LONG TERM /SUNDAY THROUGH FRIDAY/. Long term forecast update: No major changes made with this update. Overall, a warmer than average period is forecast through the week with continued chances for diurnally driven showers and thunderstorms most days aside from Sunday. A more organized synoptic scale system may impact the area later in the week, where more widespread precipitation is possible.

Previous discussion . The long term period is forecast to be quite warm, with building humidity each day. Each day through the extended is forecast to be above normal. There is also a chance of rain each day, but it will not be a washout by any means.

On Sunday, the warm up beings again as the first backdoor front will be well to our south, before another approaches from the north. There is not much moisture forecast, nor any strong short wave/vorticity impulses expected, so Sunday is expected to be precipitation free.

By Monday, a second backdoor front approaches from the north, while moisture increases, along with a couple of short waves/vorticity impulses that may clip our northern areas. This could lead to a few scattered or isolated showers and thunderstorms during the afternoon.

By Tuesday, the backdoor front will move well to our north, and steady return flow will develop for Tuesday through at least Wednesday. This will keep warm temperatures across the area, but also lead to increasing humidity. Multiple short waves/vorticity impulses will move across the area for Tuesday-Wednesday, and will combine with an increase in moisture and lead to higher chances of showers and thunderstorms.

Questions return for the end of the week however. The ECMWF and Canadian show a coastal low moving northward along the east coast, while the GFS dissipates the low across the southeast states, but does push moisture across the Mid-Atlantic states. There will continue to be an enhanced chance for rain for Thursday through Friday.

AVIATION /10Z SATURDAY THROUGH WEDNESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . MVFR/IFR CIGs, becoming VFR later this morning, or by midday the latest. NE winds less than 10 kt, but afternoon sea breezes will turn winds S to SE at KACY/KMIV/KILG, and possibly KPHL. Isolated SHRA/TSRA possible this afternoon, but chances for an individual storm passing over a given terminal are quite low, so will not include in the 12Z TAFs. Moderate confidence.

Tonight . Mostly VFR, but MVFR or IFR VSBYs possible in fog. LGT/VRB winds. High confidence with winds, low confidence with fog.

Outlook .

Sunday . VFR expected. Winds west to southwesterly around 5 kts or less.

Monday through Wednesday . Prevailing VFR expected, however scattered showers and thunderstorms, generally between 18Z and 06Z each day, may locally lower restrictions.

MARINE. Sub-Small Craft Advisory conditions today and tonight with E-NE winds around 10 kt. Seas on the ocean will be 2-3 feet.

Outlook .

Conditions are forecast to remain below advisory criteria through Wednesday, however southerly winds may gust up to 20 kts at times. Seas will be generally 2-3 feet. Afternoon and evening showers and thunderstorms are possible Monday through Wednesday, which may locally increase winds and seas.

Rip Currents .

There is a low risk for the development of dangerous and life threatening rip currents today and Sunday, although the risk could become moderate late Sunday afternoon if southerly winds are a bit stronger than currently forecasted.

TIDES/COASTAL FLOODING. Astronomical high tide levels will continue to rise as there will be a full moon this weekend. The evening high tides are over a foot higher than those in the morning.

Continued northeasterly and easterly flow could result in minor coastal flooding with the high tide cycles both this evening and Sunday evening. Based on the latest guidance and forecast, conditions will be marginal for minor coastal flooding for northern New Jersey, and there will be a better chance for minor coastal flooding across southern New Jersey and along portions of Delaware Bay. A Coastal Flood Advisory remains in effect for Atlantic, Cape May, and Cumberland counties in New Jersey, and for Kent and Sussex counties in Delaware. Will see how things develop through the morning to determine if the Coastal Flood Advisory needs to be expanded north to include southeast Burlington, Ocean, Monmouth, and Middlesex counties.

For tidal portions of the Delaware River, at this point it looks like water levels will stay below advisory criteria, but will monitor the levels in the Delaware Bay closely today to see if it needs to be expanded.

Tidal flooding is not expected on the upper eastern shore of Chesapeake Bay.

EQUIPMENT. The NOAA Weather Radio All Hazards broadcast from Hibernia Park, PA (WNG704) remains off the air until further notice due to damage to the antenna during the June 3 Derecho.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . Coastal Flood Advisory from 7 PM this evening to midnight EDT tonight for NJZ021>025. DE . Coastal Flood Advisory from 7 PM this evening to midnight EDT tonight for DEZ002>004. MD . None. MARINE . None.

Synopsis . Robertson Near Term . MPS Short Term . MPS Long Term . Robertson/Staarmann Aviation . MPS/Staarmann Marine . MPS/Staarmann Tides/Coastal Flooding . MPS Equipment .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LWSD1 - 8557380 - Lewes, DE 16 mi62 min E 8 G 11 74°F 75°F1011.5 hPa
OCIM2 - 8570283 - Ocean City Inlet, MD 21 mi62 min NE 5.1 G 8.9 75°F 78°F1012.1 hPa
OCSM2 21 mi176 min 2 ft
BRND1 - 8555889 - Brandywine Shoal Light, DE 29 mi62 min ENE 13 G 13 1012 hPa
CMAN4 - 8536110 - Cape May, NJ 32 mi62 min NE 1.9 G 5.1 73°F 73°F1011.3 hPa
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 33 mi66 min 2 ft
CA2 - 8571892 - Cambridge, MD 41 mi62 min NNW 6 G 8 79°F 83°F1011.4 hPa
BISM2 - 8571421 - Bishops Head, MD 47 mi62 min N 4.1 G 7 76°F 83°F1011.1 hPa

Wind History for Lewes, DE
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown - Delaware Coastal Airport, DE8 mi62 minN 08.00 miFair74°F72°F94%1011.4 hPa
Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD20 mi62 minN 47.00 miFair73°F68°F84%1011.3 hPa
Ocean City, Ocean City Municipal Airport, MD22 mi63 minNNE 610.00 miFair75°F72°F90%1011.2 hPa

Link to 5 minute data for KGED

Wind History from GED (wind in knots)
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Last 24hrNW36N7N6N6NW7NW6NW7NW9655NW5CalmCalmW4W4CalmNE10
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1 day agoCalm3NE3NE76N8N10
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2 days agoW3Calm--4E44S10NE4N4S7E4E53CalmW3CalmCalmCalmCalmCalmS3CalmCalmCalm

Tide / Current Tables for Possum Point, Delaware
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Possum Point
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Sat -- 04:57 AM EDT     Moonset
Sat -- 05:42 AM EDT     Sunrise
Sat -- 06:00 AM EDT     -0.07 feet Low Tide
Sat -- 11:00 AM EDT     1.02 feet High Tide
Sat -- 06:02 PM EDT     -0.01 feet Low Tide
Sat -- 08:20 PM EDT     Moonrise
Sat -- 08:28 PM EDT     Sunset
Sat -- 11:21 PM EDT     1.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.90.70.40.20-0.10.10.30.70.9110.80.60.40.20.1-00.10.40.81.11.3

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Sat -- 01:10 AM EDT     -1.77 knots Max Ebb
Sat -- 04:18 AM EDT     0.00 knots Slack
Sat -- 04:55 AM EDT     Moonset
Sat -- 05:40 AM EDT     Sunrise
Sat -- 06:53 AM EDT     1.47 knots Max Flood
Sat -- 10:00 AM EDT     -0.00 knots Slack
Sat -- 01:20 PM EDT     -1.39 knots Max Ebb
Sat -- 04:01 PM EDT     0.00 knots Slack
Sat -- 07:03 PM EDT     1.85 knots Max Flood
Sat -- 08:20 PM EDT     Moonrise
Sat -- 08:28 PM EDT     Sunset
Sat -- 10:25 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.5-1.8-1.6-1-0.30.61.31.51.20.70-0.6-1.1-1.4-1.3-0.8-00.81.61.91.71.10.3-0.4

Weather Map
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wmap_A
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (6,6,7,8)
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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 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.