Sunday, August20, 2017

Marine Weather and Tides
Vienna, 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 6:20AMSunset 7:50PM Sunday August 20, 2017 7:37 AM EDT (11:37 UTC) Moonrise 3:58AMMoonset 6:13PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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ANZ543 Tangier Sound And The Inland Waters Surrounding Bloodsworth Island- 432 Am Edt Sun Aug 20 2017
Rest of the overnight..W winds 5 kt. Waves less than 1 ft.
Today..N winds 5 to 10 kt. Waves 1 ft.
Tonight..SE winds 5 kt. Waves less than 1 ft.
Mon..S winds 5 to 10 kt. Waves 1 ft or less.
Mon night..S winds 10 kt. Waves 1 ft.
Tue..S winds 10 to 15 kt. Waves 1 to 2 ft.
Tue night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Wed..W winds 10 to 15 kt...becoming N 5 to 10 kt. Waves 1 to 2 ft. A chance of tstms. A chance of showers.
Thu..NE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 432 Am Edt Sun Aug 20 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Weak high pressure will build overhead today before shifting toward the mid-atlantic coast tonight. High pressure will move offshore Monday and a cold front will approach the waters Tuesday into Tuesday night. The boundary will pass through the waters Wednesday and high pressure will return for late in the week. Small craft advisories will likely be needed Monday night through Wednesday night.

7 Day Forecast for Marine Location Near Vienna, MD
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location: 38.48, -75.82     debug

Area Discussion for - Wakefield, VA
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Fxus61 kakq 200842
area forecast discussion
national weather service wakefield va
442 am edt Sun aug 20 2017

High pressure builds into the region today into Monday, then
slides off the coast Monday night and Tuesday. The next cold
front will impact the region on Wednesday.

Near term through tonight
Latest analysis indicating a weak frontal boundary nearly
stationary along the nc coast, stretching back wsw into south
central nc. Weak sfc high pressure is centered along the
central southern appalachians. Aloft, a trough axis is pushing
east towards the coast and taking the associated shortwave
energy with it. Had a few showers tstms earlier acrs dorchester
county md, but this has since dissipated and skies are now
mostly clear. Patchy fog has developed, mainly over southern va,
but has genly not been dense thus far. For early this morning,
will maintain mention of fog in the forecast through 12-13z over
interior southern va NE nc, otherwise quiet conditions with
cooler temperatures than past several nights (readings in the
60s over much of the interior).

Skies become sunny after any early fog with some scattered
clouds this aftn. Overall, with sfc high pressure in place, pops
will be kept silent today (14% or less). Seasonably warm with
highs mainly in the mid-upper 80s at the coast to the upper
80s lower 90s inland. Humidity will be moderate with aftn dew
pts in the 65-70 f range most areas (lower 70s SE coast). Mostly
clear tonight, with lows in the upper 60s to lower 70s, patchy
fog possible again after midnight.

Short term Monday through Wednesday
The area of high pressure slides off the coast on Monday and
the flow turns more to the S se, which will allow some
additional moisture to return to the area. The orographic lift
will allow some convection to form along the blue ridge and
appalachian mountains. Some of this convection could slide newd
off the higher terrain and impact portions of the piedmont
counties and the NRN neck ERN shore later on Monday afternoon
and evening so have continued the slight chance pops. But most
areas should be dry due to a lack of lift and little mid level
moisture. Temperatures should begin to climb with most areas
getting back up into the lower 90s (85-90 f at the coast).

Monday night into Tuesday will see mainly dry weather as well,
but the humidity will increase slightly as the southerly flow
strengthens. Lows during the overnight hours should be in the
low to mid 70s and the highs on Tuesday should be a little
warmer into the low 90s. The southeastern portion of the cwa
would have the best chance for an isolated shower as some
atlantic moisture lifts newd into NE nc and the va tidewater.

Cold front will move into the region from NW to SE late tue
night through wed. Enough lift and moisture convergence on wed
for at least high chc pops all zones, and have raised them to
likely (60%) Wed aftn evening over the south as the front looks
to slow down with a wave of low pressure then tracking along the
front. Highs Wed mid 80s N to lower 90s s.

Long term Wednesday night through Saturday
A cold front exits the coast by Thu morning. Lingering
showers storms possible far SE va NE nc on thu, although they
should taper off from NW to SE as the front moves farther
southeast and away from the area. Otherwise, cool canadian high
pressure builds across the midwest into the ERN great lakes thu-
sat with dry conditions anticipated during this timeframe.

Highs thu-sat mainly upper 70s to lower 80s. Lows Wed night
mid- upper 60s NW to 70-74f se. Lows Thu Fri nights around 60f
nw to around 70f se.

Aviation 08z Sunday through Thursday
Earlier tstms acrs the md eastern shore diminished, with mainly
clear skies across the region. Seeing patchy MVFR ifr conditions
in fog over southern va, but thus far none of this is affecting
taf sites. Still think some MVFR fog will be possible from
09-12z (except at orf). All fog should quickly dissipate after
12z. After that...VFR conditions today through Monday as sfc
high pres builds back into the region. There will once again be
the potential for some patchy fog early on Monday morning. The
next cold front approaches the region late Tue and into wed.

Sub-vfr conditions and showers thunderstorms will be possible
wed, and may linger across the SE terminals into Thu morning.

No headlines in the short term today thru Mon night. High
pressure will build over the area today, then slides offshore
and out to sea late tonight thru tue. W winds 5 to 10 kt early
this morning, will become nne later this morning into this aftn,
then E by this evening. Waves 1 to 2 ft, and seas 2 ft. E or se
winds arnd 5 kt tonight, SE or S 5 to 10 kt mon, then S 5 to 10
kt Mon night. Increasing S and SW winds Tue aftn into Tue night,
as a cold front approaches fm the nw. Speeds could reach 15-20
kt bay ocean with seas building to 3-4 ft north and 2-3 ft
south; waves building to 2-3 ft. SCA flags may be possible for
the ches bay Tue night. The cold front will cross the area
during wed, and exit the coast by Thu morning. Winds n-ne aob
15 kt behind the front late Wed thru thu.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Lkb
near term... Lkb
short term... Ess lkb
long term... Bmd
aviation... Lkb
marine... Tmg

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 15 mi50 min 73°F 82°F1018.6 hPa
BISM2 - 8571421 - Bishops Head, MD 21 mi50 min N 4.1 G 5.1 74°F 83°F1017.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 30 mi50 min N 12 G 16 76°F 1018.4 hPa
44062 - Gooses Reef, MD 32 mi38 min NNE 14 G 16 77°F 80°F1 ft1018.6 hPa (+2.0)
SLIM2 - 8577330 - Solomons Island, MD 35 mi50 min NNW 7 G 8.9 73°F 82°F
OCIM2 - 8570283 - Ocean City Inlet, MD 40 mi50 min N 8.9 G 11 75°F 76°F1017.7 hPa
44042 - Potomac, MD 41 mi38 min N 7.8 G 7.8 77°F 82°F1017 hPa (+2.0)
LWSD1 - 8557380 - Lewes, DE 43 mi50 min NNW 11 G 12 74°F 77°F1017.4 hPa
TPLM2 - Thomas Point, MD 44 mi38 min NW 6 G 7 73°F 80°F
PPTM2 - 8578240 - Piney Point, MD 45 mi50 min NNE 9.9 G 12
CPVM2 47 mi50 min 73°F 66°F
44063 - Annapolis 47 mi38 min SSE 5.8 G 7.8 80°F
DRSD1 - Delaware Reserve, DE 47 mi128 min WSW 1 67°F 1017 hPa67°F
LWTV2 - 8635750 - Lewisetta, VA 48 mi50 min N 8 G 13 78°F 83°F1017.5 hPa
APAM2 - 8575512 - Annapolis, MD 49 mi50 min 72°F 1017.6 hPa

Wind History for Cambridge, MD
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cambridge-Dorchester Airport, MD12 mi48 minN 07.00 miFair68°F68°F100%1017.9 hPa
Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD20 mi44 minN 010.00 miFair70°F68°F93%1017.9 hPa

Wind History from CGE (wind in knots)
Last 24hrNW4NW5N7
1 day agoSW6S86S8
2 days agoCalmCalmSE3S45

Tide / Current Tables for Vienna, Nanticoke River, Chesapeake Bay, Maryland
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Sun -- 03:53 AM EDT     2.88 feet High Tide
Sun -- 04:57 AM EDT     Moonrise
Sun -- 06:22 AM EDT     Sunrise
Sun -- 10:23 AM EDT     -0.06 feet Low Tide
Sun -- 04:20 PM EDT     2.50 feet High Tide
Sun -- 07:12 PM EDT     Moonset
Sun -- 07:50 PM EDT     Sunset
Sun -- 10:28 PM EDT     -0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Salisbury, Maryland (2 miles below) Current
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Sun -- 02:52 AM EDT     -0.00 knots Slack
Sun -- 04:57 AM EDT     Moonrise
Sun -- 06:07 AM EDT     -0.98 knots Max Ebb
Sun -- 06:21 AM EDT     Sunrise
Sun -- 09:14 AM EDT     0.00 knots Slack
Sun -- 11:41 AM EDT     0.67 knots Max Flood
Sun -- 02:40 PM EDT     -0.00 knots Slack
Sun -- 06:05 PM EDT     -1.10 knots Max Ebb
Sun -- 07:11 PM EDT     Moonset
Sun -- 07:49 PM EDT     Sunset
Sun -- 09:15 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Wakefield, VA (7,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 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 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.