Wednesday, December11, 2019
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Marine Weather and Tides
Rehoboth Beach, DE

Version 3.4
NOTICE
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.
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 7:07AMSunset 4:43PM Wednesday December 11, 2019 11:55 AM EST (16:55 UTC) Moonrise 4:28PMMoonset 6:21AM Illumination 100% Phase: Full Moon; Moon at 15 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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ANZ454 Coastal Waters From Cape May Nj To Cape Henlopen De Out 20 Nm- Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 914 Am Est Wed Dec 11 2019
.small craft advisory in effect through late tonight...
This afternoon..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. SWell mainly from the se with a dominant period of 8 seconds. Rain likely or a chance of snow early.
Tonight..N winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 5 ft. SWell mainly from the se with a dominant period of 8 seconds.
Thu..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft until late afternoon, then 2 ft or less. SWell mainly from the se with a dominant period of 8 seconds.
Thu night..SE winds around 10 kt. Seas around 3 ft. SWell mainly from the se with a dominant period of 8 seconds.
Fri..E winds around 10 kt. Seas 3 to 4 ft. A chance of rain in the afternoon.
Fri night..E winds 10 to 15 kt, becoming se after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 nm after midnight.
Sat..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely. Vsby 1 to 3 nm in the morning.
Sat night..W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of rain.
Sun..W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft.
Sun night..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft.
ANZ400 914 Am Est Wed Dec 11 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Strong high pressure will build in from the west tonight into Thursday and move offshore Thursday night. A low pressure system will move through the southeastern states and into the mid-atlantic late Friday into Saturday. The low will quickly move off to the northeast allowing high pressure to briefly build into the region for the start of the new week. Another low pressure system will approach the region late Monday into Tuesday.


7 Day Forecast for Marine Location Near Rehoboth Beach, DE
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location: 38.72, -75.08     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 111420 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 920 AM EST Wed Dec 11 2019

SYNOPSIS. Strong high pressure will build in from the west tonight into Thursday and move offshore Thursday night. A low pressure system will move through the southeastern states and into the Mid-Atlantic late Friday into Saturday. The low will quickly move off to the northeast allowing high pressure to briefly build into the region for the start of the new week. Another low pressure system will approach the region late Monday into Tuesday.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

930 am update:

Little changes made to previous forecast as things are evolving as expected. The band of light snow associated with the region of mid-lvl FGEN has pushed east of the Delaware River and should be off the coast by noon or so. Additional accumulations with this band should be minimal given increasing insolation and drier air undercutting the band. Otherwise expect skies to clear from W-E late this morning into early this afternoon, with a relatively cold day in store for the area.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/. Quiet weather returns through Thursday as high pressure builds. The flow aloft turns fairly zoning with limited mid level RH. Expect Wednesday night to be fairly chilly with Thursday's highs not being much different. As the day shift yesterday wrote in the AFD, its going to be cold and dry and there's not much else to add to that.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/. High pressure will slide offshore Thursday night. Skies will remain mostly clear overnight and we should radiate efficiently with lows Thursday night dropping down into the teens to lower 20s. Areas right along the coast and near the urbanized areas of Philadelphia will be more moderate and remain in the upper 20s to lower 30s.

The high moves into the Canadian maritimes Friday leaving our area in east to southeast return flow. Friday starts off dry but as the next system approaches from the south, some light precipitation may start to edge into our area. While it looks like the precip should hold off until closer to midday, some light precipitation may develop to our southwest and move northward into portions of our forecast area. With temperatures starting off cold Friday morning, they may still be near or slightly below freezing when the light precip moves in. This looks to be largely confined to the southern Poconos and the higher elevations of northwest New Jersey so we have included a brief mention of some freezing rain but confidence is pretty low that we see much if any occur. Temperatures should rise through the late morning with the area expected to above freezing across the board by early afternoon.

Meanwhile, a low pressure system will track up the southeast coast and up into the Mid-Atlantic late Friday into Saturday. The low will intensify as it pushes northward and will bring rain to the region. The ground is pretty sodden from the rain earlier in the week and with PWATs climbing around 1.0-1.3" on Saturday, we may see some decent rains again and it could be heavy at times. Added the mention of heavy rain into the forecast as it looks clearer that heavy rain will occur within the forecast area. While right now it doesn't look like we will see enough rain to cause any big flooding concerns, there may be some localized issues, especially in areas where there is poor drainage and/or where the leaves may be clogging the storm drains.

Ahead of the system we will be able to warm up quite a bit with highs on Friday rising into the 40s to lower 50s but even more warm air will be present for Saturday and expect highs to rise into the upper 40s to near 60 across the forecast area.

The low will continue to track up into New England by Sunday and it will continue to deepen as it passes by our coast. The pressure gradient will tighten up, especially for Saturday night into Sunday and winds will become quite gusty across the region.

Conditions start to dry out, especially later Sunday, as weak high pressure starts to edge its way into the area from the west.

Another low pressure system will develop near the Gulf of Mexico and move towards our region early in the week. The low looks to start bringing some precipitation to the region as early as later Monday and continuing into Tuesday. With a good deal of warm air arriving to the region, it looks like it will be mainly a rain event again across the region.

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

Wednesday . Widespread MVFR/IFR in steady snow through the rest of the overnight hours. Shortly before day break there could be a brief window of some moderate to heavy snow generally from the I95 corridor eastward. By mid morning conditions will rapidly improve to VFR as the precipitation comes to an end. West to northwest winds will generally be between 8-12kts with some occasional gusts up to 20kts possible in the afternoon and evening.

Wednesday night . VFR expected. Winds mostly under 10 knots under generally northerly winds.

Thursday . VFR with light winds becoming southeasterly to southerly during the day.

Outlook .

Thursday night . VFR conditions expected. Light and variable winds. High Confidence.

Friday..Mainly VFR conditions expected. MVFR or lower conditions possible as rain develops through the afternoon and evening. Light northeast to east winds. Moderate confidence

Friday night through Saturday . MVFR or lower conditions expected in rain. Conditions may start to improve late Saturday. East winds around 8 to 12 knots Thursday night veering to the south Saturday morning and then to the southwest Saturday afternoon. Moderate confidence

Sunday . Mainly VFR conditions expected. West winds around 10 to 15 knots with gusts up to 25 knots possible. Moderate confidence.

MARINE. The Small Craft Advisory went unchanged as waves are still between 4- 6 feet and should stay above 5 feet for much of the day. Anticipate a lull in the winds offshore through portions of the day today before a secondary surge in low level winds brings just under gale force gusts to the northern ocean waters off of Ocean and Monmouth Counties later this evening.

Wednesday night/Thursday . W/NW wind gusts over 25 kts are expected to persist into Wednesday night before dropping below criteria by Thursday morning. Seas initially 3-4 ft are expected to decrease to 2-3 ft by late Thursday.

Outlook .

Friday . Increasing winds and building seas expected, especially later in the day, but expected to remain below Small Craft Advisory conditions through the daytime hours. East winds around 10 to 15 knots with gusts around 20 knots and seas around 2 to 4 feet.

Friday night through Saturday . East winds will continue to increase Friday evening and gusts are expected to near 25 knots by Saturday morning. Winds will turn to south and then west on Saturday. Seas will build to 5 feet by Saturday morning, and continue to build to 5 to 7 feet through the day. A Small Craft Advisory will likely be needed.

Saturday night through Sunday . West winds around 15 to 25 knots with gale force gusts possible on Sunday. Seas around 5 to 7 feet will gradually subside to near 5 feet by later Sunday.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory until 6 AM EST Thursday for ANZ450>455.

Synopsis . Meola Near Term . Carr Short Term . Deal Long Term . Meola Aviation . Deal/Meola Marine . Deal/Meola


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LWSD1 - 8557380 - Lewes, DE 5 mi55 min NW 17 G 20 37°F 47°F1027.8 hPa (+1.4)
CMAN4 - 8536110 - Cape May, NJ 18 mi55 min NW 13 G 19 38°F 45°F1027 hPa (+1.3)
BRND1 - 8555889 - Brandywine Shoal Light, DE 19 mi55 min 1027.7 hPa (+1.4)
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 27 mi65 min WNW 19 G 21 39°F 52°F4 ft1024.1 hPa (+1.1)
OCIM2 - 8570283 - Ocean City Inlet, MD 27 mi55 min N 12 G 14 37°F 49°F1028.3 hPa (+1.3)
SJSN4 - 8537121 - Ship John Shoal, NJ 43 mi55 min NW 16 G 19 37°F 46°F1027.3 hPa (+1.1)

Wind History for Lewes, DE
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown - Delaware Coastal Airport, DE15 mi61 minVar 410.00 miA Few Clouds37°F32°F82%1027.9 hPa
Wildwood, Cape May County Airport, NJ22 mi59 minNW 9 G 1710.00 miOvercast36°F30°F79%1027.7 hPa

Link to 5 minute data for KGED

Wind History from GED (wind in knots)
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53NW3CalmNW3NW544
1 day agoSW8W5SW6SW3S5SW10SW13SW12SW17
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2 days agoSE8S9SE6SE9SE8SE4NE4CalmCalmCalmCalmCalmNW3NE3NE5N3NE4W6CalmCalmSW4SW9SW7SW10

Tide / Current Tables for Rehoboth Beach, Delaware
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Rehoboth Beach
Click for Map
Wed -- 12:19 AM EST     -0.12 feet Low Tide
Wed -- 06:21 AM EST     Moonset
Wed -- 06:40 AM EST     4.50 feet High Tide
Wed -- 07:08 AM EST     Sunrise
Wed -- 01:09 PM EST     -0.21 feet Low Tide
Wed -- 04:27 PM EST     Moonrise
Wed -- 04:38 PM EST     Sunset
Wed -- 07:09 PM EST     3.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.100.71.833.94.44.5431.90.90.2-0.200.81.82.83.43.73.52.81.70.8

Tide / Current Tables for Delaware Bay Entrance, Delaware Current
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Delaware Bay Entrance
Click for Map
Wed -- 02:30 AM EST     0.00 knots Slack
Wed -- 05:42 AM EST     1.55 knots Max Flood
Wed -- 06:21 AM EST     Moonset
Wed -- 07:08 AM EST     Sunrise
Wed -- 09:04 AM EST     -0.00 knots Slack
Wed -- 12:41 PM EST     -1.55 knots Max Ebb
Wed -- 03:42 PM EST     0.00 knots Slack
Wed -- 04:27 PM EST     Moonrise
Wed -- 04:38 PM EST     Sunset
Wed -- 06:26 PM EST     1.25 knots Max Flood
Wed -- 09:29 PM EST     -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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-1.2-1-0.40.411.41.51.20.70-0.6-1.1-1.5-1.5-1.2-0.50.20.81.21.20.90.3-0.3-0.8

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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