Thursday, July29, 2021
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Marine Weather and Tides
Little Creek, DE

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:58AMSunset 8:18PM Thursday July 29, 2021 9:38 PM EDT (01:38 UTC) Moonrise 10:39PMMoonset 10:42AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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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ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 704 Pm Edt Thu Jul 29 2021
.tornado watch 401 in effect until 9 pm edt this evening...
Tonight..S winds 5 to 10 kt, becoming sw after midnight. Gusts up to 20 kt this evening. Waves 2 ft or less. Showers and tstms likely early this evening, then a chance of tstms late this evening and early morning. Vsby 1 to 3 nm early this evening.
Fri..NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 ft or less.
Fri night..NW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Gusts up to 20 kt. Waves 2 ft or less.
Sat..NW winds 5 to 10 kt. Waves 2 ft or less.
Sat night..SW winds around 5 kt. Waves 2 ft or less.
Sun..S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 2 ft or less. A chance of showers.
Sun night..S winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Waves 2 ft or less. A chance of showers in the evening.
Mon..NW winds 5 to 10 kt. Waves 2 ft or less.
Mon night..SE winds around 5 kt. Waves 2 ft or less. A chance of showers after midnight.
Tue..E winds 5 to 10 kt. Waves 2 ft or less. A chance of showers.
Tue night..E winds around 5 kt. Waves 2 ft or less. Scattered showers. Winds and waves higher in and near tstms.
ANZ400 704 Pm Edt Thu Jul 29 2021
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A warm front will lift north of the area this evening before a cold front moves across the area tonight. High pressure located across the mid west on Friday will build toward the east coast on Saturday. Another cold front is forecast to move across the area later Sunday into Sunday night. High pressure may briefly affect the area before an area of low pressure lifts north offshore of the east coast on Tuesday. The frontal boundary to our south may lift northward and affect the area for the middle to end of next week.


7 Day Forecast for Marine Location Near Little Creek, DE
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location: 39.22, -75.33     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 300059 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 859 PM EDT Thu Jul 29 2021

SYNOPSIS. A warm front will lift north of the area this evening before a cold front moves across the area tonight. High pressure located across the Mid West on Friday will build toward the east coast on Saturday. Another cold front is forecast to move across the area later Sunday into Sunday night. High pressure may briefly affect the area before an area of low pressure lifts north offshore of the east coast on Tuesday. The frontal boundary to our south may lift northward and affect the area for the middle to end of next week.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. HAve extended the tornado watch through 10 PM for Monmouth and Ocean Counties to account for the severe and tornado warned storms to move off the coast.

The warm front is now north of our region. We could still see thunderstorms from the line currently over central NY, but high res models are consistent in showing that line weakening as it gets closer to our region, so will keep the chance for thunderstorms in the forecast, but do expect that the severe risk should decrease once the cluster of storms over central/South Jersey gets off the coast.

As the storms clear the coast, surface low pressure will be located near the NY/Canada border and be dragging a surface cold front through the area. Winds will slowly turn from the northwest through the night with skies slowly clearing from the west.

SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/. Surface low pressure moves off to the northeast with its attendant cold front offshore by Friday morning. With the front offshore, the flow across the region will turn to the west and settle out of the northwest. Winds may become gusty through the afternoon, with gusts around 25 mph or so. Skies will be relatively clear through the day and with dew points dropping down into the 50s (potentially 40s in spots) it will feel nice and dry and pretty comfortable for late July. The cooler air being drawn into our region will be slightly below normal with highs into the 70s through the southern Poconos, northwest New Jersey and the Lehigh Valley and low to mid 80s through the rest of the region. Depending on how far offshore the front moves, we could see some temps remaining in the upper 80s for a while across southern Delaware and nearby eastern Maryland.

Friday night will be cold when compared to what we typically see in late July. The clear skies will help with radiative cooling and with the winds dropping off overnight, we should see things drop off decently overnight. Overnight lows will be a chilly upper 40s to low 50s across the northern zones through the Lehigh Valley and into portions of central New Jersey. Around the urban corridor and through Delaware, Maryland, and southern New Jersey, temperatures will be in the mid 50s to lower 60s.

LONG TERM /SATURDAY THROUGH THURSDAY/. The first half of the weekend is expected to be quiet, before the potential for unsettle weather returns for the end of the weekend through much of next week.

On Saturday, high pressure to the west will control the weather, providing a dry forecast through Saturday night. Below normal temperatures are expected through Saturday night as well.

On Sunday, active weather could once again return to the forecast. An area of low pressure is forecast to move across southeast Canada and bring a frontal boundary/surface trough across the east coast Sunday into Sunday night. Meanwhile, an area o flow pressure may form along the frontal boundary to our south and move to the northeast offshore of the Mid Atlantic coast. There will be a chance of showers and thunderstorms through the day Sunday, most likely associated with the approaching frontal boundary coming from the west. The low off the coast may remain far enough offshore to not bring any impacts to the area.

On Monday, our area will be in between the departing system from the weekend, and another potential coastal low that is expected Tuesday. Therefore dry weather is expected on Monday.

However, on Tuesday, another coastal low is forecast to develop to our south and may end up inching close enough to the coast to bring a chance of showers and thunderstorms to the area.

As we go through the second half of the week, unsettled weather is possible to continue for Wednesday and Thursday as the front to the south may begin moving back northward and into the area while a couple of low pressure systems may develop and move near the area as well.

Temperatures for the long term period are expected to be near or slightly below normal for the weekend into much of next week.

AVIATION /01Z FRIDAY THROUGH TUESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Tonight . Showers and thunderstorms will move the terminals from west to east this afternoon, ending between 22Z-03Z. Conditions will drop to MVFR/IFR in and around any storms. Winds may gust in excess of 30 knots in and near thunderstorms. Conditions are expected to be MVFR for a period of time behind the storms before returning to VFR by late tonight. South to southwest winds around 10 to 15 knots, becoming northwest around 5 to 10 knots overnight. Moderate confidence overall with low confidence in thunderstorm timing.

Friday . Mainly VFR. Northwest winds around 10 to 15 knots with gusts up to 25 knots possible in the afternoon. High confidence.

Outlook .

Saturday-Saturday night . VFR. Northwest winds 5-10 mph during the day, light and variable overnight.

Sunday . Mostly VFR. Chance of showers and thunderstorms which may temporarily lead to lower conditions. Southwest winds 5-10 knots, gusts 15-20 knots possible.

Sunday night . Chance for conditions to lower below VFR overnight. South winds early, becoming northwest overnight.

Monday-Monday night . Mostly VFR expected. Northwest winds 5-10 knots during the day, light and variable overnight.

Tuesday-Tuesday night . Mostly VFR. Chance of showers and thunderstorms which may temporarily lead to lower conditions. Northwest winds 5-10 knots during the day, light and variable overnight.

MARINE. SCA remain up for the ocean waters through midnight tonight.

Winds will gusts around 25 knots on the ocean in response to a tightening pressure gradient. Winds will start to drop off tonight. Seas around 3 to 4 feet.

Mainly sub-SCA conditions are expected for Friday. Northwest winds around 10 to 15 knots with gusts around 20 knots. Seas will remain around 3 to 4 feet. A few gusts may near 25 knots late afternoon into Friday night in the strong northwest flow, especially in the coastal waters off of northern and central New Jersey. However, will hold off on issuing any new SCA's at this time until the current SCA has expired.

Outlook .

Saturday-Tuesday . Conditions are expected to remain below Small Craft Advisory levels through the period.

Rip Currents .

Winds will increase to 15 to 20 kts today with gusts at SCA criteria. There will be an onshore component for the NJ coast today as winds veer from the south. Given the above, and the 8 second period forecast, the rip risk for Coastal Cape May and Coastal Atlantic will be MODERATE today. The rest of the beaches will be kept at LOW given the orientation of the coastline relative to the wind direction. Winds shift offshore for Friday, so the rip risk for Friday will be LOW.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory until midnight EDT tonight for ANZ450>455.

Synopsis . Robertson Near Term . Johnson/Meola Short Term . Meola Long Term . Robertson Aviation . Meola/Robertson Marine . Meola


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DRSD1 - Delaware Reserve, DE 11 mi68 min SSW 5.1 79°F 1009 hPa78°F
BRND1 - 8555889 - Brandywine Shoal Light, DE 20 mi50 min SW 9.9 G 12 1009.5 hPa
CMAN4 - 8536110 - Cape May, NJ 26 mi50 min SSW 8.9 G 12 78°F 74°F1009 hPa
RDYD1 - 8551910 - Reedy Point, DE 27 mi50 min 78°F 83°F1007.9 hPa
DELD1 - 8551762 - Delaware City, DE 29 mi50 min WSW 2.9 G 5.1 79°F 1008.4 hPa
LWSD1 - 8557380 - Lewes, DE 32 mi50 min SW 7 G 12 79°F 72°F1009.2 hPa
CHCM2 - 8573927 - Chesapeake City, MD 33 mi50 min W 7 G 11 80°F 83°F1008.6 hPa
MRCP1 - 8540433 - Marcus Hook, PA 41 mi50 min 81°F 82°F1007.8 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 48 mi50 min SW 12 G 14 80°F 82°F1009 hPa
ACYN4 - 8534720 - Atlantic City, NJ 49 mi50 min 74°F 73°F1009.2 hPa

Wind History for Ship John Shoal, NJ
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dover Air Force Base, DE9 mi42 minSSW 510.00 miFair79°F73°F84%1008.5 hPa
Millville, Millville Municipal Airport, NJ17 mi44 minSW 49.00 miFair77°F73°F88%1008.6 hPa

Link to 5 minute data for KDOV

Wind History from DOV (wind in knots)
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Last 24hrSE5S3CalmSE3S4CalmS6CalmSE6S4SE6SE6S6SE5S4S4CalmS5S4S7S9S5SW6SW5
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2 days agoCalmCalm--CalmCalmCalmCalmCalmCalmCalmCalmN5CalmCalmCalmE3E7E6SE5SE5CalmSE5CalmS5

Tide / Current Tables for Mahon River entrance, Delaware Bay, Delaware
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Mahon River entrance
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Thu -- 02:11 AM EDT     5.86 feet High Tide
Thu -- 05:59 AM EDT     Sunrise
Thu -- 09:09 AM EDT     0.39 feet Low Tide
Thu -- 11:42 AM EDT     Moonset
Thu -- 02:43 PM EDT     5.41 feet High Tide
Thu -- 08:16 PM EDT     Sunset
Thu -- 09:29 PM EDT     0.80 feet Low Tide
Thu -- 11:39 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.15.35.85.75.14.12.81.60.80.40.71.634.35.25.45.14.33.32.21.30.90.91.6

Tide / Current Tables for Back Creek entrance, Nantuxent Cove, Delaware Bay, New Jersey
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Back Creek entrance
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Thu -- 02:17 AM EDT     6.27 feet High Tide
Thu -- 05:58 AM EDT     Sunrise
Thu -- 09:02 AM EDT     0.46 feet Low Tide
Thu -- 11:41 AM EDT     Moonset
Thu -- 02:52 PM EDT     5.94 feet High Tide
Thu -- 08:15 PM EDT     Sunset
Thu -- 09:22 PM EDT     0.94 feet Low Tide
Thu -- 11:38 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.75.76.26.15.23.92.71.70.90.50.92.23.74.85.75.95.44.43.32.31.611.12.2

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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