Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Mantua, VA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:59AMSunset 7:28PM Sunday March 26, 2017 8:38 PM EDT (00:38 UTC) Moonrise 5:19AMMoonset 5:01PM Illumination 0% Phase: New Moon; Moon at 29 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- 731 Pm Edt Sun Mar 26 2017
Tonight..SE winds 5 to 10 kt. Waves 1 ft. A chance of rain.
Mon..SW winds 5 to 10 kt. Waves 1 ft. Scattered showers and tstms.
Mon night..S winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue..SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Tue night..NW winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 to 10 kt. Waves 1 ft.
Wed night..N winds 5 to 10 kt. Waves 1 ft.
Thu..SE winds around 5 kt. Waves 1 ft. A chance of showers through the night.
Fri..NE winds 5 to 10 kt. Waves 1 ft. Showers likely. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 731 Pm Edt Sun Mar 26 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A front will remain stationary just south of the waters through this evening before returning north as a warm front late tonight and Monday. A cold front is expected to cross the chesapeake bay region Tuesday night. Small craft advisories are possible Tuesday night and Wednesday behind the cold front.

7 Day Forecast for Marine Location Near Mantua, VA
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location: 38.84, -77.25     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 261825
afdlwx
area forecast discussion
national weather service baltimore md/washington dc
225 pm edt Sun mar 26 2017

Synopsis A front will remain stationary across the area through this
evening then return as a warm front late tonight and Monday.

Another cold front will cross the area late Tuesday. High
pressure will build over the region Thursday.

Near term /through tonight/ Moisture convergence will
increase across the southwest and west with rain/showers moving
into areas west of the blue ridge early this evening and east
of the blue ridge overnight as warm lifts north into
pennsylvania. Areas of fog are also possible. Warm front clears
the area by daybreak Mon if not sooner.

Short term /Monday through Tuesday night/ Low clouds will
erode during the morning with breaks in the clouds expected in
the afternoon. A weak convergence zone will exist/remain and
combined with some instability could be enough for scattered
showers. Better forcing and moisture spreads across the area
late Mon night and Tue with approach of low pressure and
associated cdfnt for better coverage of showers and
thunderstorms.

Long term /Wednesday through Sunday/ long term period starts dry
as high pressure builds over our region Wednesday into Thursday
with high temperatures in the 50s and 60s. Conditions will
deteriorate Thursday night into Friday as a low pressure system
tracks east-northeast from missouri to near lake erie. Its
associated warm front will stay south of the mid-atlantic into
Friday before lifting Friday night. Low pressure develops near
or off of the DELMARVA peninsula Friday night into Saturday as
unsettled conditions continue over our region. Conditions
improve during the day on Saturday as low pressure moves away
from the coast. Dry conditions continue into Sunday.

Aviation /18z Sunday through Friday/ Ifr conditions tonight
with cigs/vsbys improving to MVFR/vfr mon. Chance of rain is
greatest after midnight at main terminals. Showers and possible
t-storms expected again on tue.

Dry/vfr conditions expected for Wednesday and Thursday before
rain approaches the area Thursday night, possibly bringing sub-
vfr conditions over the terminals into Friday.

Marine Winds are not doing much right now so cancelled sca.

However, winds are expected to increase again across the
southern waters late tonight so issue SCA for southern waters.

Dry conditions expected for Wednesday and Thursday before rain
approaches the area Thursday night, bringing showers over the
waters into Friday. Wind gusts will be near the small craft
advisory threshold during parts of this period... Therefore sca
possible at times.

Lwx watches/warnings/advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 11 pm this evening to 6 pm edt
Monday for anz533-534-537-541>543.

Synopsis... Lfr
near term... Lfr
short term... Lfr
long term... Imr
aviation... Imr/lfr
marine... Imr/lfr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 12 mi50 min E 4.1 G 7 47°F 48°F1023.7 hPa
BSLM2 - Chesapeake Bay, MD 29 mi128 min ENE 5.1 47°F 1024 hPa45°F
NCDV2 38 mi50 min ENE 5.1 G 7 50°F 51°F1022.8 hPa
APAM2 - 8575512 - Annapolis, MD 42 mi50 min 46°F 1024.1 hPa
TPLM2 - Thomas Point, MD 43 mi38 min E 12 G 13 45°F 45°F45°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 46 mi50 min E 13 G 16 45°F 1024.4 hPa
BLTM2 - 8574680 - Baltimore, MD 46 mi50 min ESE 8.9 G 13 46°F 47°F1024.1 hPa
CPVM2 47 mi50 min 45°F 45°F
FSNM2 47 mi50 min E 14 G 17 45°F 1024 hPa
44062 - Gooses Reef, MD 48 mi38 min ESE 7.8 G 12 46°F 45°F1 ft1024.8 hPa (-0.0)

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA8 mi1.7 hrsN 010.00 miOvercast49°F44°F85%1024 hPa
Washington/Reagan National Airport, DC, VA12 mi46 minE 99.00 miOvercast48°F46°F96%1024.1 hPa
Washington/Dulles International Airport, DC, VA13 mi46 minESE 58.00 miOvercast47°F44°F90%1023.5 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA17 mi42 minE 69.00 miOvercast49°F45°F86%1024.7 hPa
College Park Airport, MD20 mi57 minE 65.00 miOvercast45°F42°F93%1024 hPa
Camp Springs / Andrews Air Force Base, MD20 mi1.7 hrsE 94.00 miFog/Mist47°F44°F93%1024.5 hPa
Quantico Marine Corps Airfield - Turner Field, VA23 mi42 minE 710.00 miOvercast51°F48°F89%1023.9 hPa
Leesburg / Godfrey, VA24 mi43 minESE 87.00 miOvercast48°F46°F94%1023.7 hPa

Wind History from DAA (wind in knots)
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Last 24hr3CalmSE3Calm35Calm56353633CalmE5Calm6E635Calm4
1 day agoS3S34SW5S3S4S3CalmCalmCalmCalmCalm3S5S5S5CalmSW34SE8SE3CalmCalmCalm
2 days agoS4SE6SE5SE6SE5SE6SE5S6SE6S6S6S8S8S7S7S5S8S12
G17
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G14
53S4

Tide / Current Tables for Chain Bridge, D.C.
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Chain Bridge
Click for Map
Sun -- 02:22 AM EDT     0.21 feet Low Tide
Sun -- 06:18 AM EDT     Moonrise
Sun -- 07:02 AM EDT     Sunrise
Sun -- 08:02 AM EDT     3.15 feet High Tide
Sun -- 02:46 PM EDT     0.14 feet Low Tide
Sun -- 06:00 PM EDT     Moonset
Sun -- 07:26 PM EDT     Sunset
Sun -- 08:23 PM EDT     3.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.50.20.30.81.72.533.132.41.71.10.60.20.10.51.32.22.83.13.12.72

Tide / Current Tables for Chain Bridge, Washington, D.C.
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Chain Bridge
Click for Map
Sun -- 02:25 AM EDT     0.23 feet Low Tide
Sun -- 06:18 AM EDT     Moonrise
Sun -- 07:02 AM EDT     Sunrise
Sun -- 08:03 AM EDT     3.09 feet High Tide
Sun -- 02:48 PM EDT     0.16 feet Low Tide
Sun -- 06:00 PM EDT     Moonset
Sun -- 07:26 PM EDT     Sunset
Sun -- 08:25 PM EDT     3.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.50.30.30.81.62.42.93.12.92.41.71.10.60.30.20.51.22.12.83.132.62

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 (20,4,5,8)
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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.