Saturday, March23, 2019 L-36.com


Marine Weather and Tides
Trappe, MD

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:01AMSunset 7:20PM Saturday March 23, 2019 4:36 PM EDT (20:36 UTC) Moonrise 9:31PMMoonset 7:54AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 141 Pm Edt Sat Mar 23 2019
.small craft advisory in effect until 10 pm edt this evening...
This afternoon..NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Tonight..NW winds 10 to 15 kt with gusts to 20 kt... Becoming W 5 kt late. Waves 3 ft...subsiding to 1 ft after midnight.
Sun..S winds 5 to 10 kt. Waves 1 ft.
Sun night..SW winds 5 to 10 kt. Waves 1 ft.
Mon..W winds 5 to 10 kt. Waves 1 ft. Rain likely.
Mon night..N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. A chance of rain.
Tue..NE winds 10 to 15 kt. Waves 1 to 2 ft.
Wed..E winds 5 to 10 kt. Waves 1 ft.
ANZ500 141 Pm Edt Sat Mar 23 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters today and tonight before shifting offshore on Sunday. Low pressure and its associated cold front will then cross the waters Monday. This will be followed by high pressure for the remainder of next week. Small craft advisories may be needed Monday through Tuesday.


7 Day Forecast for Marine Location Near Trappe, MD
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location: 38.66, -76.08     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 231924
afdphi
area forecast discussion
national weather service mount holly nj
324 pm edt Sat mar 23 2019

Synopsis
High pressure will slide to the south and east of the area on
Sunday. A low pressure system will track to the north of the area
dropping a cold front through the region Sunday night into Monday.

Another low develops along this boundary and crosses to the south of
the area Monday night into Tuesday. High pressure then builds into
the region on Tuesday and then remains in control of the weather
through the remainder of the week. Another system may affect the
area over the weekend.

Near term until 6 am Sunday morning
High pressure stretching from the ohio valley southeast to the
coastal section of the carolinas will move southeast overnight. As
the gradient between this system and strong low pressure over the
canadian maritimes continues to relax, wind gusts will diminish,
leaving sustained winds in the 8 to 12 mph range. With dewpoint
depression values between 10 to 15 degrees, very dry air and light
winds will result in ideal radiational cooling conditions, with
expected lows in the low to mid 20s north and upper 20s to low 30s
south, which is 5 to 10 degrees below normal for this time of year.

Short term 6 am Sunday morning through 6 pm Sunday
As high pressure slips off the carolina coast, the combination of a
developing southwesterly flow at the surface and zonal flow aloft,
will bring warmer temperatures to the region. Expect highs in the
low 50s in the north, and low 60s in the south, which is 5 degrees
or so above normal for this time of year. Westerly winds in the 5 to
10 mph range will become southwesterly as the day wears on. Skies
will be mostly sunny in the morning, with increasing cloudiness
during the afternoon ahead of the next system heading this way.

Long term Sunday night through Saturday
Sunday night through Monday... A cold front will drop through our
area Sunday night into Monday morning. Not a lot of moisture
available with the frontal passage but some showers will be possible
as the front makes its way into the area. An area of low pressure
develops along this frontal boundary and will travel along it as the
front pushes to the south and east. The low remains centered to the
south of the region as it makes its way towards the coast. This
second low has more moisture associated with it and we should see
some showers move across our southern areas through Monday and
Monday night. While the precipitation will end from northwest to
southeast, colder and drier air will filter into the region. If the
precip doesn't cut off before the colder air arrives, then we may
see some mixing with snow before the precip fully ends. But with the
drier air moving in fairly quickly (which is what the guidance
continues to show) the precipitation will largely be confined to the
southern portions of the forecast area as we move through Monday
afternoon and into Monday night.

Tuesday through Friday... Any lingering precipitation over delmarva
should end early on Tuesday as dry air moves into the area. High
pressure will build in from the west on Tuesday. The high settles
just to the northeast of our area and remains there through the
week. We should have dry conditions through the week and generally
light winds, which should result in good radiational cooling at
night. High temperatures will start off on the cool side (in the
40s) but as we go through the week, they will moderate quite a bit
and be pretty warm (into the 50s 60s) by the time we reach the
weekend.

Saturday... The next low pressure system is slated to move through
the region over the weekend. With warm temperatures expected when
the precipitation arrives, anticipate that we will have an all rain
event. Precipitation in advance of the main system will start to
arrive early Saturday and then gradually spread across the forecast
area.

Aviation 19z Saturday through Thursday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.

Tonight...VFR under a clear sky. While a few west to northwest wind
gusts between 20 and 25 knots are possible early, winds are expected
to subside to 10 knots or less overnight.

Sunday...VFR with west winds 5 to 10 knots, becoming southwest
during the afternoon.

Outlook...

Sunday night... MainlyVFR conditions expected. Increasing cloudiness
overnight with showers possible towards daybreak. West to southwest
winds around 10 knots or less.

Monday... MainlyVFR conditions expected with MVFR possible in
showers. Northerly winds around 10 knots.

Tuesday and Wednesday...VFR conditions expected. North to northeast
winds around 10 knots on Tuesday, becoming east to southeast
around 10 knots or less on Wednesday.

Marine
Strong west to northwesterly winds from 25-30 knots through the
remainder of the afternoon, though these will slowly subside into
the overnight hours. Gusts of up to 35 knots will be possible
through 22z, dropping to 25-30 knots by 00z. However, a few
localized higher gusts will be possible, especially across the
northern zones through the overnight. Winds have relaxed below gale
criteria from great egg inlet southward, thus allowed the gale
warning to expire early at 20z for these areas. Will keep the gale
warning up until expiration at 22z for areas to the north.

A SCA has been issued in place of the gale warning for the southern
zones , and will continue through 09z Sunday morning. Winds gusts
between 20 and 25 knots will be possible. Will likely add the
northern zones to this SCA after the gale expires. Seas of 3 to 5
feet.

Sunday and Sunday night... Winds turning southerly while dropping
below SCA criteria at 10-15 knots. Waves 2 to 4 feet.

Outlook
Monday and Monday night... Sub SCA conditions with westerly winds
turning north to northeasterly as a cold front drops southward.

Waves near 1 to 3 feet during the day, but building to 2 to 4 feet
through the overnight Monday.

Tuesday and Tuesday night... Winds approaching SCA criteria out of
the north at 20 to 25 knots, with gusts of 25 to 30 knots,
especially for the southern zones. Waves building to 3 to 5 feet.

Wednesday through Thursday... Winds remain below SCA criteria and
northeasterly winds from 10 to 15 knots. Seas, however, remain on
the high side, possibly at SCA levels, from 3 to 5 feet for the
southern zones Wednesday. Waves should drop to 2 to 4 feet by
Thursday morning though.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Small craft advisory until 4 am edt Sunday for anz430-431-
452>455.

Gale warning until 6 pm edt this evening for anz450-451.

Synopsis... Meola
near term... Miketta
short term... Miketta
long term... Meola
aviation... Meola miketta
marine... Davis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 6 mi54 min 47°F 48°F1019.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 24 mi48 min 49°F 1020.7 hPa
TPLM2 - Thomas Point, MD 25 mi36 min W 20 G 22 48°F 45°F1020.7 hPa (+0.3)17°F
CPVM2 28 mi48 min 50°F 15°F
BISM2 - 8571421 - Bishops Head, MD 30 mi48 min 48°F 49°F1020.6 hPa
APAM2 - 8575512 - Annapolis, MD 31 mi48 min 50°F 1019.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 31 mi48 min 50°F 47°F1020.1 hPa
BSLM2 - Chesapeake Bay, MD 34 mi126 min W 12 48°F 1021 hPa17°F
TCBM2 - 8573364 - Tolchester Beach, MD 39 mi48 min 48°F 46°F1019.6 hPa
PPTM2 - 8578240 - Piney Point, MD 44 mi96 min NNW 21 G 25
44042 - Potomac, MD 45 mi36 min ENE 16 G 19 48°F 46°F2 ft1020.9 hPa (-0.3)
DRSD1 - Delaware Reserve, DE 45 mi126 min WNW 9.9 50°F 1018 hPa17°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 45 mi48 min 48°F 1019.4 hPa
FSNM2 45 mi54 min 1019 hPa

Wind History for Cambridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cambridge-Dorchester Airport, MD9 mi56 minWNW 14 G 2410.00 miFair50°F19°F30%1020 hPa
Easton / Newman Field, MD10 mi51 minW 17 G 2310.00 miClear52°F17°F26%1021 hPa

Wind History from CGE (wind in knots)
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1 day agoE14
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2 days agoE7E11E8
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CalmNE4CalmNE4E5E6E7E10E7SE6E5E53E5E8SE13
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Tide / Current Tables for Oxford, Tred Avon River, Maryland
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Oxford
Click for Map
Sat -- 12:21 AM EDT     -0.02 feet Low Tide
Sat -- 06:10 AM EDT     1.93 feet High Tide
Sat -- 07:03 AM EDT     Sunrise
Sat -- 08:54 AM EDT     Moonset
Sat -- 01:15 PM EDT     -0.08 feet Low Tide
Sat -- 06:39 PM EDT     1.52 feet High Tide
Sat -- 07:19 PM EDT     Sunset
Sat -- 10:31 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-000.30.81.31.71.91.91.61.20.80.40.1-0.1-00.30.71.21.51.51.310.60.3

Tide / Current Tables for Cove Point (1.1 mi. NE of), Maryland Current
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Cove Point (1.1 mi. NE of)
Click for Map
Sat -- 01:53 AM EDT     0.00 knots Slack
Sat -- 05:00 AM EDT     0.80 knots Max Flood
Sat -- 07:04 AM EDT     Sunrise
Sat -- 08:28 AM EDT     -0.00 knots Slack
Sat -- 08:55 AM EDT     Moonset
Sat -- 11:47 AM EDT     -0.73 knots Max Ebb
Sat -- 02:54 PM EDT     0.00 knots Slack
Sat -- 05:30 PM EDT     0.54 knots Max Flood
Sat -- 07:20 PM EDT     Sunset
Sat -- 08:31 PM EDT     -0.00 knots Slack
Sat -- 10:31 PM EDT     Moonrise
Sat -- 11:49 PM EDT     -0.60 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.300.40.70.80.70.50.2-0.2-0.5-0.7-0.7-0.6-0.300.30.50.50.40.1-0.1-0.4-0.5

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Philadelphia/Mount Holly, PA (16,3,4,5)
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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 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.