Thursday, February22, 2018 L-36.com


Marine Weather and Tides
Choptank, MD

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:43AMSunset 5:51PM Thursday February 22, 2018 5:53 PM EST (22:53 UTC) Moonrise 10:45AMMoonset 12:00AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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- 514 Pm Est Thu Feb 22 2018
.small craft advisory in effect until midnight est tonight... NE winds 15 kt with gusts to 20 kt. Waves 1 ft. Rain likely with patchy drizzle.
Tonight..NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Rain likely with areas of drizzle.
Fri..SE winds 5 to 10 kt. Waves 1 ft. Rain likely with areas of drizzle.
Fri night..S winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt...becoming E in the afternoon. Waves 1 ft. A chance of showers.
Sat night..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sun..SW winds 10 to 15 kt...becoming nw 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
Mon..NW winds 5 kt. Waves less than 1 ft. A chance of showers through the day.
ANZ500 514 Pm Est Thu Feb 22 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A front will remain stalled to the south through the end of the week before gradually returning north as a warm front during the weekend. A cold front will push east across the area on Sunday.

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 222057
afdphi
area forecast discussion
national weather service mount holly nj
357 pm est Thu feb 22 2018

Synopsis
High pressure will slide across to the north of the region tonight
as a nearly stationary boundary remains across just to our south.

Meanwhile, a low pressure system will develop across the great lakes
region and track eastward, dragging a cold front into our area on
Saturday and stalling out across our southern zones. The boundary
will start to lift northward as a warm front late Saturday into
Sunday. Another low pressure system will cross to the north of our
area with its attendant cold front moving through Sunday night. High
pressure will build into the region through midweek. Another system
will approach the region late Wednesday into Thursday.

Near term until 6 am Friday morning
Rain continues across much of the northern half of the forecast
area as low pressure along a stationary boundary across the mid-
atlantic passes south of the region. A 1042 mb high builds into new
england as a 1033 mb high sits off the southeast u.S. Coast. With
caa funneling into northern zones, expecting a period of freezing
rain this evening for the poconos and northwest nj as surface temps
drop to freezing. Rain moves offshore this evening, and conditions
dry out for most of tonight. Patchy fog will develop tonight with
abundant low level moisture in place.

Another area of low pressure over the tennessee valley will develop
tonight and lift north towards the region late tonight. Precip will
develop out ahead of that low and lift into the region in the pre-
dawn hours of Friday. Expecting freezing rain for the poconos and
northwest nj once again. As a result, will keep the winter weather
advisory in effect, but will also extend it through Friday.

Lows tonight will range from the mid and upper 20s in far northern
zones to otherwise in the mid 30s for most of southeast pa and nj.

Extreme southern nj and the DELMARVA will be in the upper 30s.

Short term 6 am Friday morning through 6 pm Friday
Freezing rain continues for far northern zones for much of Friday
morning, eventually changing to plain rain by Friday afternoon.

Aforementioned winter weather advisory will be in effect until 1 pm
Friday.

For the rest of the region, plain rain, though a cold rain, as highs
will generally be in the 40s. With the low taking more of a
northerly path as opposed to the low today, looks as if the bulk of
the precip will fall across pa and much of nj, with lesser amounts
of rain and lower pops for the delmarva.

Long term Friday night through Thursday
Unsettled weather will continue through the weekend before a quiet
period begins for the early through mid week period.

Friday night through Sunday night... An unsettled period for the
region as several systems impact our areas weather.

A low pressure system will develop across the great lakes region and
track eastward towards our area, dragging a cold front into our area
on Saturday and stalling out across our southern zones. The boundary
will start to lift northward as a warm front late Saturday into
Sunday. Another low pressure system will cross to the north of our
area with its attendant cold front moving through Sunday night.

With all of these systems will come periods of rain, including some
heavier rain over the weekend. With some pretty wet antecedent
conditions and frozen (or at least partially frozen) ground, we may
see some localized flooding occur, especially in the more prone
locations. Guidance is showing between 1-3 inches through this
period with the bulk of the precip falling north and west of the i-
95 corridor. We will continue to monitor the flooding threat but
right now it looks like the mainstem rivers will be mostly fine, at
least through Sunday. Some residual draining may cause some rises
into Monday and we will monitor that through the weekend.

Monday through Wednesday... High pressure will build across the
region allowing for the area to dry out and warm up a bit.

Temperatures should rebound from where we are over the weekend and
highs are expected to rise back into the upper 40s to mid 50s across
the area.

Wednesday night through Thursday... The high breaks down and slides
to the southeast of the area. Meanwhile, an area of low pressure
will develop across the midwest and track to the east. This system
will push a warm front into DELMARVA on Thursday. Low pressure may
develop along this boundary and then track towards the coast
Thursday night. Lots of uncertainty, especially with front locations
and timing, but another round of rain is likely across parts of the
area. With temps a bit colder across the northern zones, a few
flakes may fall early Thursday if enough moisture remains across the
region.

Aviation 21z Thursday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.

Tonight... Widespread MVFR conditions with local ifr conditions in
pockets of moderate rain. Rain tapers off by 04z, and MVFR ifr
conditions expected in fog and stratus. Another round of rain moves
into the terminals prior to 12z Friday. NE winds 10-15 kt.

Friday... Ifr conditions in rain and fog. NE winds 10-15 kt,
becoming SE less than 10 in the afternoon.

Outlook...

Friday night... Ifr conditions expected in rain and fog with
patchy drizzle and fog developing overnight. West to southwest
winds. Moderate confidence.

Saturday through Saturday night... Mainly ifr conditions expected. A
brief period of MVFRVFR may occur around midday but conditions are
expected to fall back down to ifr by the afternoon evening as rain
overspreads the area. Light north to northwest winds early will
become more easterly through the day. Moderate confidence.

Sunday... Ifr conditions expected with limited improvement through
the day. Confidence is low that we will return toVFR during the
day. East to southeast winds will become southwest by the afternoon.

Moderate confidence.

Sunday night through Tuesday...VFR conditions expected. West to
northwest winds becoming gusty to around 20 knots on Monday. High
confidence.

Marine
A tight northeast pressure gradient will lie across the waters. For
the ocean... Northeast winds 15-20 kt with 25-30 kt gusts expected
through Friday. Winds ease in the afternoon. Seas gradually subside.

Tonight... SCA conditions on the ocean, with NE winds 15-20 kt with
gusts up to 30 kt and 5-7 ft seas. On de bay, sub-sca conditions.

Friday... Winds gradually turn SE and diminish to around 10 kt. Seas
gradually subside to 2 to 4 ft late in the day.

Outlook...

Friday night through Saturday night... Sub-advisory conditions are
expected on the area waters.

Sunday and Sunday night... Seas are expected to build and exceed 5
feet on the ocean on Sunday. Winds will also start to pick up,
mainly on the southern waters, with wind gusts around 25 knots
through Sunday evening. A small craft advisory will likely be
needed.

Monday and Tuesday... Sub-advisory conditions are expected on the
area waters.

Phi watches warnings advisories
Pa... Winter weather advisory until 1 pm est Friday for paz054-055.

Nj... Winter weather advisory until 1 pm est Friday for njz001.

De... None.

Md... None.

Marine... Small craft advisory until 4 pm est Friday for anz450>455.

Synopsis... Meola
near term... Mps
short term... Mps
long term... Meola
aviation... Meola mps
marine... Meola mps


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 10 mi53 min 47°F 49°F1033.5 hPa (+2.3)
44062 - Gooses Reef, MD 26 mi43 min ENE 14 G 16 45°F 1032.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 30 mi53 min NE 15 G 17 46°F 1032.6 hPa (+1.8)
TPLM2 - Thomas Point, MD 30 mi53 min NE 9.9 G 9.9 45°F 42°F
CPVM2 32 mi53 min 44°F 44°F
BISM2 - 8571421 - Bishops Head, MD 32 mi53 min NNE 15 G 19 47°F 52°F1031.9 hPa (+1.7)
APAM2 - 8575512 - Annapolis, MD 35 mi53 min 45°F 1033.6 hPa (+3.2)
SLIM2 - 8577330 - Solomons Island, MD 36 mi53 min NNE 9.9 G 12 48°F 44°F1031.8 hPa (+1.9)
DRSD1 - Delaware Reserve, DE 39 mi143 min ENE 4.1 45°F 1032 hPa45°F
TCBM2 - 8573364 - Tolchester Beach, MD 40 mi53 min NNE 8 G 17 44°F 46°F1034.7 hPa (+3.4)
BSLM2 - Chesapeake Bay, MD 41 mi143 min NNE 4.1 49°F 1032 hPa46°F
LWSD1 - 8557380 - Lewes, DE 45 mi53 min NE 17 G 20 43°F 46°F1033.1 hPa (+2.1)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 48 mi53 min NNE 13 G 15 45°F 1034.4 hPa (+3.2)
FSNM2 48 mi53 min NE 14 G 18 45°F 1033.9 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE 49 mi53 min NE 21 G 23 43°F 1033.8 hPa (+2.4)
44042 - Potomac, MD 49 mi43 min W 14 G 16 46°F 1030.9 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi53 min NE 11 G 14

Wind History for Cambridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cambridge-Dorchester Airport, MD11 mi78 minNNE 92.50 miFog/Mist46°F44°F93%1032.2 hPa
Easton / Newman Field, MD11 mi64 minENE 103.00 miFog/Mist46°F44°F93%1034.2 hPa

Wind History from ESN (wind in knots)
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1 day agoS7S10S10S9
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2 days agoSW7S6SW8S8S9SW8SW8SW6SW7SW8SW8SW8SW12SW12
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Tide / Current Tables for Choptank, Choptank River, Maryland
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Choptank
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Thu -- 03:12 AM EST     -0.30 feet Low Tide
Thu -- 06:45 AM EST     Sunrise
Thu -- 09:12 AM EST     1.69 feet High Tide
Thu -- 10:44 AM EST     Moonrise
Thu -- 04:34 PM EST     0.09 feet Low Tide
Thu -- 05:49 PM EST     Sunset
Thu -- 09:27 PM EST     1.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.1-0.2-0.3-0.20.10.51.11.51.71.61.41.10.70.50.20.10.10.30.611.21.21

Tide / Current Tables for Dover Bridge, Choptank River, Maryland
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Dover Bridge
Click for Map
Thu -- 04:17 AM EST     -0.31 feet Low Tide
Thu -- 06:46 AM EST     Sunrise
Thu -- 10:44 AM EST     Moonrise
Thu -- 10:46 AM EST     1.78 feet High Tide
Thu -- 05:39 PM EST     0.10 feet Low Tide
Thu -- 05:49 PM EST     Sunset
Thu -- 11:02 PM EST     1.28 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.2-0.1-0.3-0.3-00.40.91.41.71.81.61.30.90.60.30.10.10.20.50.91.21.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Philadelphia/Mount Holly, PA (17,4,5,8)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 numerious 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.