Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Mason Neck, VA

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 5:45AMSunset 8:38PM Wednesday June 28, 2017 3:00 PM EDT (19:00 UTC) Moonrise 9:51AMMoonset 11:11PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 132 Pm Edt Wed Jun 28 2017
This afternoon..SW winds 5 kt. Waves less than 1 ft.
Tonight..S winds 5 to 10 kt. Waves 1 ft.
Thu..S winds 10 to 15 kt. Gusts up to 20 kt in the late morning and afternoon. Waves 1 ft.
Thu night..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Fri..SW winds 5 to 10 kt. Waves 1 ft.
Fri night..S winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. A chance of showers after midnight.
Sun..NW winds around 5 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 132 Pm Edt Wed Jun 28 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move over the area today before shifting to bermuda through Thursday. Small craft advisory conditions are possible over portions of the waters Thursday.

7 Day Forecast for Marine Location Near Mason Neck, VA
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location: 38.65, -77.13     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 281824
afdlwx
area forecast discussion
national weather service baltimore md washington dc
224 pm edt Wed jun 28 2017

Synopsis High pressure will settle near bermuda on Thursday
with hot and humid conditions returning and persisting through
the first half of next week.

Near term through tonight Quiet weather tonight as high
pressure shifts offshore. Warmer tonight due to light srly flow
and veil of high thin clouds mainly across the north.

Short term Thursday through Friday night Summerlike
conditions will establish over the region tomorrow and persist
through the first half of next week and likely beyond with
bermuda surface high pressure and subtropical ridge to the
south. As a result, expect temperatures to climb into the low
90s on Thu and mid 90s on fri. By Friday, there is enough
instability to t-storms over the mtns.

Long term Saturday through Wednesday
High pressure will move offshore the east coast to usher in warmer
air and increasing humidity Saturday through Sunday night. There is
a chance for showers and thunderstorms each period with the better
chances during the afternoon and early evening both Saturday and
Sunday.

A second area of high pressure will build into the region Monday and
Monday night, bringing less humid conditions.

The shower and thunderstorm chances return on the 4th of july as an
inverted trough of low pressure sets up over the region.

Temperatures will not be as warm as previous days.

By Wednesday, small pieces of energy arrive and move across the
region. The chance for a couple of showers linger.

Aviation 18z Wednesday through Monday Vfr conditions
through Fri night.

MVFR to ifr conditions are possible with showers and storms Saturday
through Sunday night. Winds southwest 5 to 10 knots Saturday
through Sunday night.

Marine Winds will strengthen tonight and remain gusty through
fri night with SCA conditions expected.

No marine hazards expected Saturday through Sunday night. Winds
southwest around 10 knots.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 9 pm this evening to 4 am edt
Thursday for anz531>534-537-539>541-543.

Synopsis... Lfr
near term... Lfr
short term... Lfr
long term... Klw
aviation... Lfr klw
marine... Lfr klw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44061 - Upper Potomac, MD 11 mi42 min ESE 1.9 G 3.9 76°F 80°F1022.5 hPa
WASD2 - 8594900 - Washington, DC 16 mi42 min E 1 G 6 78°F 80°F1021.2 hPa
NCDV2 23 mi42 min ESE 4.1 G 5.1 76°F 81°F1021.2 hPa
BSLM2 - Chesapeake Bay, MD 24 mi150 min WNW 4.1 75°F 1022 hPa50°F
44062 - Gooses Reef, MD 38 mi40 min ESE 5.8 G 7.8 73°F 1022.6 hPa
TPLM2 - Thomas Point, MD 41 mi60 min SE 6 G 7 73°F 77°F
APAM2 - 8575512 - Annapolis, MD 41 mi42 min 78°F 1021.2 hPa
44063 - Annapolis 42 mi40 min SSE 7.8 G 9.7 74°F 1021.7 hPa
SLIM2 - 8577330 - Solomons Island, MD 43 mi42 min ESE 8 G 8.9 73°F 78°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 43 mi42 min E 5.1 G 7 73°F 1022.4 hPa
CPVM2 46 mi42 min 75°F 47°F
PPTM2 - 8578240 - Piney Point, MD 48 mi42 min W 2.9 G 4.1

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA6 mi62 minNW 810.00 miFair78°F46°F32%1021.9 hPa
Quantico Marine Corps Airfield - Turner Field, VA13 mi64 minS 710.00 miPartly Cloudy79°F54°F42%1022.3 hPa
Washington/Reagan National Airport, DC, VA15 mi68 minNNE 710.00 miPartly Cloudy80°F48°F33%1021.7 hPa
Camp Springs / Andrews Air Force Base, MD19 mi62 minN 09.00 miFair79°F43°F28%1021.8 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA21 mi64 minNNW 710.00 miMostly Cloudy77°F52°F42%1023.2 hPa
Stafford, Stafford Regional Airport, VA24 mi65 minW 410.00 miFair77°F46°F34%1023.4 hPa

Wind History from DAA (wind in knots)
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Last 24hrN7NW8NW7W7W6NW8NW8NW7CalmCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmW6W6W5NW8
1 day agoW4
G16
SE5CalmSE5SE5SE5CalmSE5CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmW3NW9W8NW9W5
2 days agoNW7NW9W9W9NW13NW9
G15
NW5CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmNW8NW14
G19
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W5NW7

Tide / Current Tables for Gunston Cove, Virginia
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Gunston Cove
Click for Map
Wed -- 05:46 AM EDT     Sunrise
Wed -- 06:00 AM EDT     0.10 feet Low Tide
Wed -- 10:50 AM EDT     Moonrise
Wed -- 11:42 AM EDT     2.42 feet High Tide
Wed -- 06:36 PM EDT     -0.02 feet Low Tide
Wed -- 08:37 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.31.91.510.60.30.10.30.81.52.12.42.42.21.71.20.80.40.100.411.62.1

Tide / Current Tables for Riverview, Potomac River, Maryland
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Riverview
Click for Map
Wed -- 05:45 AM EDT     Sunrise
Wed -- 06:24 AM EDT     0.15 feet Low Tide
Wed -- 10:50 AM EDT     Moonrise
Wed -- 12:04 PM EDT     3.05 feet High Tide
Wed -- 06:59 PM EDT     0.00 feet Low Tide
Wed -- 08:36 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.92.62.11.50.90.50.20.20.81.62.42.932.92.41.81.20.70.200.311.82.4

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 Baltimore, MD/Washington (15,3,4,5)
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Ground Weather Radar Station Sterling, VA
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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.