Saturday, February29, 2020
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Marine Weather and Tides
Choptank, MD

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 6:35AMSunset 5:57PM Saturday February 29, 2020 1:57 AM EST (06:57 UTC) Moonrise 9:44AMMoonset 11:39PM Illumination 32% Phase: Waxing Crescent; Moon at 6 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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ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 1238 Am Est Sat Feb 29 2020
.small craft advisory in effect through late tonight...
Overnight..NW winds 10 kt with gusts to 20 kt. Waves 2 ft.
Sat..NW winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Sat night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft.
Sun..W winds 5 to 10 kt. Waves 1 to 2 ft.
Sun night..S winds 5 to 10 kt. Waves 1 ft.
Mon..SW winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Mon night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A chance of rain.
Tue..SW winds 10 kt. Waves 1 to 2 ft. Rain likely through the day, then a chance of rain through the night.
Wed..W winds 10 to 15 kt. Waves 2 ft. A chance of rain through the day, then a chance of showers through the night.
ANZ500 1238 Am Est Sat Feb 29 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will remain stalled over southeastern canada through the weekend as high pressure gradually builds in from the midwest. The high will move offshore early next week, with a slow-moving frontal system following in its wake.


7 Day Forecast for Marine Location Near Choptank, MD
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location: 38.68, -75.95     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 290600 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 100 AM EST Sat Feb 29 2020

SYNOPSIS. An upper level trough over New England will slowly push to the north as east as high pressure builds through the weekend. High pressure crests Sunday and begins to slide offshore Sunday as low pressure makes a return by mid week. A series of weak disturbances will slide along a stalled frontal boundary keeping for forecast pattern rather unsettled next week.

NEAR TERM /UNTIL 6 AM THIS MORNING/. Light snow showers and flurries have pretty much ended, with only a few stratocumulus remaining through the overnight. and Drier air with surface dewpoints falling into the single digits up north and in the teens down south will continue to spread into the region overnight.

Lows tonight will fall into the teens for the N/W areas and low/mid 20s for the Lehigh Valley and N NJ. For Delmarva and metro Philadelphia, low will mostly be in the upper 20s. Winds will relax a bit overnight, but still be mostly 5 to 10 mph overnight.

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SUNDAY/. High pressure across the Mississippi Valley early Sat will begin to move towards the Ohio Valley by afternoon. This will bring more cold dry air across our area. Highs Sat will probably be a few degrees colder than today (Friday). Some snow showers across the Great Lakes and upstate NY will probably find their way into the Southern Poconos with the upper winds turning more NW ahead of the approaching high.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. The upper level closed low over New England will finally start to push east Saturday evening allow for the center high pressure to drift east during the day on Sunday. This should set up for a pleasant day on Sunday even with temps sitting in the mid 40s across the region.

High pressure begins to drift offshore Sunday evening as an upper level low tracks through southern Canada eventually stalling a frontal boundary across the eastern CONUS. There will be several waves of low pressure that ride along that boundary through next week however with the lack of significant forcing, the model spread on timing is frankly all over the place. Thus I've opted for continuity in the forecast in keeping the mention of chances for rain daily from Monday night onwards through the middle of next week although I wouldn't single any day out as a washout.

Temps will be warming through the middle of the week with mid 60s on Wednesday with lows doing much of the same warming through the middle of the week peaking Tuesday night in the mid to upper 40s. A cold front finally presses through Wednesday evening and we return to more normal temps to end the week.

AVIATION /06Z SATURDAY THROUGH WEDNESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

VFR conditions with a few low clouds down to 045 with a similar pattern to Friday with a few scattered flurries and snow showers. West winds up to 15 knots with gusts increasing to 20-25 knots after 15Z. Winds turning northwesterly after 23Z.

Outlook .

Saturday night through Sunday night . VFR conditions expected. Northwesterly winds 10 to 20 kt on Saturday becoming westerly 5 to 15 kt on Sunday. Moderate Confidence.

Monday through Tuesday . Beginning Monday afternoon, there is a chance for periods of MVFR or even IFR conditions as rain moves into the region. Moderate confidence that all TAF sites will see rain, but low confidence if this will translate to a prolonged period of MVFR/IFR conditions.

MARINE. Sub-SCA conditions on tap through the overnight.

Conditions increasing back to advisory criteria after a short break with winds increasing from 10 to 20 knots overnight to 20 to 30 knots during the day. Seas building to 3 to 5 feet.

Outlook .

Saturday Night: SCA expected with northwesterly wind gusts to 30 kt. Wave heights generally 3 to 5 feet.

Sunday: SCA expected. Wind gusts to 25 kt. Wave heights up to 4 feet.

Sunday Night: SCA eventually relaxing to Sub-SCA. Wind gusts to 20 kt. Wave heights decreasing to below 5 feet overnight.

Monday: SCA conditions expected with southerly wind gusts to 20 kt. Wave heights will be building to 6 feet. Slight chance SHRA.

Monday Night: SCA conditions expected. Southerly wind gusts to 20 kt. Wave heights up to 6 feet. Chance SHRA.

Tuesday: SCA conditions possible with south southwesterly wind gusts to 25 kt. Wave heights up to 4 feet. Chance SHRA.

Tuesday Night: SCA Conditions possible. Wind gusts to 25 kt. Wave heights up to 7 feet. Chance SHRA.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Small Craft Advisory from 9 AM this morning to 6 AM EST Sunday for ANZ430-431-450>455.

Synopsis . Deal Near Term . Davis/MPS/O'Hara Short Term . O'Hara Long Term . Deal Aviation . Davis/Deal/O'Hara Marine . Davis/Deal/MPS/O'Hara


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 10 mi63 min WNW 16 G 21 39°F 43°F1013.1 hPa
44062 - Gooses Reef, MD 26 mi45 min NW 18 G 19 38°F 1013.7 hPa
TPLM2 - Thomas Point, MD 30 mi57 min W 16 G 21 36°F 42°F1014.3 hPa (+0.3)18°F
BISM2 - 8571421 - Bishops Head, MD 32 mi63 min NNW 7 G 8.9 36°F 42°F1013.4 hPa
CPVM2 32 mi63 min 36°F
APAM2 - 8575512 - Annapolis, MD 35 mi63 min 35°F 1013.1 hPa
SLIM2 - 8577330 - Solomons Island, MD 36 mi63 min NW 5.1 G 8.9 38°F 44°F1013.2 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 40 mi93 min WNW 18 G 20 37°F 42°F1013.1 hPa
BSLM2 - Chesapeake Bay, MD 41 mi147 min NW 8 1013 hPa
LWSD1 - 8557380 - Lewes, DE 45 mi63 min WNW 14 G 16 39°F 43°F1012.8 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 48 mi63 min WNW 17 G 19 35°F 1012.8 hPa
FSNM2 48 mi75 min W 19 G 24 35°F 1012.4 hPa
44042 - Potomac, MD 49 mi39 min NW 14 G 19 40°F 44°F1013.6 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 49 mi63 min NW 18 G 26 1012.7 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi63 min NNW 14 G 16

Wind History for Cambridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Easton / Newman Field, MD11 mi73 minWNW 14 G 1910.00 miPartly Cloudy38°F18°F45%1014.2 hPa
Cambridge-Dorchester Airport, MD11 mi92 minWNW 1110.00 mi37°F19°F48%1013.2 hPa

Link to 5 minute data for KESN

Wind History from ESN (wind in knots)
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2 days agoCalmN3NE4NE5NE3E4CalmNE5NE4E6E6NE6NE4E3E6E12E8E8E9E8E8SE8SE7W16
G22

Tide / Current Tables for Choptank, Choptank River, Maryland
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Choptank
Click for Map
Sat -- 02:16 AM EST     -0.10 feet Low Tide
Sat -- 06:36 AM EST     Sunrise
Sat -- 08:13 AM EST     1.54 feet High Tide
Sat -- 09:43 AM EST     Moonrise
Sat -- 03:14 PM EST     0.23 feet Low Tide
Sat -- 05:56 PM EST     Sunset
Sat -- 08:25 PM EST     1.23 feet High Tide
Sat -- 11:39 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30-0.1-00.20.611.41.51.51.310.70.50.30.20.30.50.711.21.210.7

Tide / Current Tables for Dover Bridge, Choptank River, Maryland
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Dover Bridge
Click for Map
Sat -- 03:21 AM EST     -0.11 feet Low Tide
Sat -- 06:37 AM EST     Sunrise
Sat -- 09:43 AM EST     Moonrise
Sat -- 09:48 AM EST     1.62 feet High Tide
Sat -- 04:19 PM EST     0.24 feet Low Tide
Sat -- 05:56 PM EST     Sunset
Sat -- 10:00 PM EST     1.30 feet High Tide
Sat -- 11:39 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.40.1-0.1-0.10.10.50.91.31.61.61.51.20.90.60.40.20.30.40.711.21.31.2

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 (1,6,7,8)
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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.