Saturday, August8, 2020
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Marine Weather and Tides
Fort Hunt, VA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:15AMSunset 8:12PM Saturday August 8, 2020 7:30 AM EDT (11:30 UTC) Moonrise 10:04PMMoonset 9:54AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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- 437 Am Edt Sat Aug 8 2020
Rest of the overnight..N winds 5 kt. Waves less than 1 ft. A chance of showers. Patchy fog. Vsby 1 to 3 nm.
Today..NE winds 5 kt. Waves less than 1 ft. Scattered showers.
Tonight..SW winds around 5 kt. Waves 1 ft or less.
Sun..S winds around 5 kt. Waves 1 ft or less.
Sun night..S winds around 5 kt. Waves 1 ft.
Mon..S winds around 5 kt. Waves 1 ft.
Mon night..S winds around 5 kt. Waves 1 ft.
Tue..S winds around 5 kt. Waves 1 ft. A chance of showers and tstms.
Wed..S winds around 5 kt. Waves 1 ft. Showers and tstms likely, then a chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 437 Am Edt Sat Aug 8 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A stationary front will remain just south of the area through Saturday before dissipating Sunday. High pressure will then build over the region over the second half of the weekend.


7 Day Forecast for Marine Location Near Fort Hunt, VA
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location: 38.72, -77.04     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 080842 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 442 AM EDT Sat Aug 8 2020

SYNOPSIS. High pressure will build across the region over the next few days. A cold front will approach from the northwest next week, stalling in the area as the week progresses.

NEAR TERM /THROUGH TONIGHT/. Frontal boundary is stalled across our area this morning, while mid to upper level trough axis is sliding east into the Mid-Atlantic region. Isolated showers and a few thunderstorms are moving over the Fredericksburg area over southern Maryland, just south of the boundary where humidity is higher along with better forcing. Cloud cover has diminished over our western zones, which is north of the boundary, and fog has started to develop over the valleys.

Additional patchy fog could develop this morning, with it dissipating after sunrise. Trough axis will be pushing east from our region today while high pressure starts building to our NW. Dry conditions are expected over most of our CWA this morning, with showers lingering between Fredericksburg and southern Maryland. With the boundary over our region but not much forcing aloft, could see a few isolated showers and thunderstorms developing due to terrain circulation -especially over central Virginia-, and also south of the boundary where the higher moisture and instability recedes.

High pressure will be building into our region Saturday night as the boundary moves into southern Virginia. A few showers could linger over our southeastern zones but should diminish as the night progresses.

Near normal high temperatures are expected for today, reaching into the upper 80s is most regions. Lower at higher elevations. Low temperatures for tonight will be in the 60s and low 70s.

SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/. High pressure will be building overhead on Sunday as pattern remains zonal aloft, and the boundary to our south dissipates. Conditions should remain dry on Sunday, with maybe an isolated shower developing due to terrain circulation over central Virginia. Dry conditions will remain into Sunday night. High temperatures will be in the upper 80s and low 90s, with the highest heat index values reaching into the mid 90s.

Weak high pressure will remain in control on Monday but a shortwave trough aloft and southerly flow advecting moisture into our region, could allow for the development of a few isolated showers and thunderstorms. Heat index values could reach the upper 90s over most areas across our CWA.

LONG TERM /TUESDAY THROUGH FRIDAY/. Guidance is in relative agreement regarding the pattern thru the coming week, with a general increase in storminess. At the start, a relatively zonal pattern will exist aloft, with a cold front in the eastern Great Lakes. As the week progresses, the front will drop into our region and stall out, all the while a closed low develops to our west. This combination will be conducive to an increasing risk of showers and thunderstorms, with an attendant increase in the risk of isolated severe storms and flash flooding. Temperatures will start to decline, with high 80s and low 90s Tuesday dropping into the 80s by Friday.

AVIATION /09Z SATURDAY THROUGH WEDNESDAY/. MVFR and IFR conditions have developed over some terminals due to low CIGS, along with some patchy fog. This should remain for the next few hours and improve after sunrise. VFR conditions should return then and are expected to remain through the rest of the today, with any restrictions related to thunderstorms, especially near CHO. A drier pattern then builds on Saturday night and remains into Monday night with less chance of any thunderstorm developing over our region. Patchy fog possible again Saturday night.

Main aviation concern on Tuesday and Wednesday will be isolated thunderstorms, primarily in the afternoon and evening hours.

MARINE. Winds are expected to remain below Small Craft Advisory criteria into Monday night. Some convection could bring gusty winds today over the southern portion of the Bay, and lower Tidal Potomac. This should improve tonight. There will be less chance for any convection Sunday into Sunday night, a slight chance for Monday afternoon/evening.

Main marine concern on Tuesday and Wednesday will be isolated thunderstorms, primarily in the afternoon and evening hours.

TIDES/COASTAL FLOODING. Elevated water levels will persist over the next few days. A few places could barely touch minor flood stage, but overall, think action stage will be the most common high tide. With minimal flow, no significant changes are expected.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . RCM NEAR TERM . IMR SHORT TERM . IMR LONG TERM . RCM AVIATION . IMR/RCM MARINE . IMR/RCM TIDES/COASTAL FLOODING . RCM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 11 mi43 min NNE 2.9 G 7 73°F 81°F
BSLM2 - Chesapeake Bay, MD 18 mi121 min Calm 1019 hPa
NCDV2 28 mi43 min N 1.9 G 4.1
TPLM2 - Thomas Point, MD 34 mi31 min ENE 11 G 13 72°F 81°F1021.5 hPa (+1.4)72°F
44062 - Gooses Reef, MD 35 mi19 min 75°F 82°F
APAM2 - 8575512 - Annapolis, MD 35 mi43 min NNE 4.1 G 6 74°F 84°F
CPVM2 39 mi43 min 74°F 71°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 41 mi49 min NE 9.9 G 12
SLIM2 - 8577330 - Solomons Island, MD 42 mi43 min N 5.1 G 7
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 44 mi43 min NNE 8 G 8.9 72°F
FSNM2 44 mi61 min NNE 8 G 11 71°F
BLTM2 - 8574680 - Baltimore, MD 45 mi43 min NE 7 G 8.9 72°F 82°F
PPTM2 - 8578240 - Piney Point, MD 49 mi43 min NE 5.1 G 6

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA7 mi35 minNNE 310.00 miOvercast73°F69°F90%1020.9 hPa
Washington/Reagan National Airport, DC, VA10 mi39 minNNE 710.00 miOvercast73°F70°F90%1020.9 hPa
Camp Springs / Andrews Air Force Base, MD12 mi95 minNNE 410.00 miOvercast71°F70°F100%1020.8 hPa
College Park Airport, MD19 mi56 minN 010.00 miOvercast70°F68°F93%1020.7 hPa
Quantico Marine Corps Airfield - Turner Field, VA20 mi35 minNNW 67.00 miOvercast75°F71°F88%1020.5 hPa

Link to 5 minute data for KDAA

Wind History from DAA (wind in knots)
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Last 24hrCalmCalmS3CalmS6S7S4S7SW6SE6S5S3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3
1 day agoCalmCalmN3CalmNW3CalmCalmE3E3N5CalmCalmSE4SE6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmNW3N3CalmCalmNW3CalmSE5S5SE4SE3CalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmCalm

Tide / Current Tables for Fort Washington, Maryland
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Fort Washington
Click for Map
Sat -- 06:13 AM EDT     0.47 feet Low Tide
Sat -- 06:16 AM EDT     Sunrise
Sat -- 10:54 AM EDT     Moonset
Sat -- 12:00 PM EDT     2.62 feet High Tide
Sat -- 06:24 PM EDT     0.34 feet Low Tide
Sat -- 08:10 PM EDT     Sunset
Sat -- 11:03 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.41.91.410.60.50.611.62.22.52.62.521.50.90.60.40.40.71.322.4

Tide / Current Tables for Alexandria, Virginia
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Alexandria
Click for Map
Sat -- 12:00 AM EDT     3.03 feet High Tide
Sat -- 06:16 AM EDT     Sunrise
Sat -- 06:29 AM EDT     0.53 feet Low Tide
Sat -- 10:54 AM EDT     Moonset
Sat -- 12:15 PM EDT     2.97 feet High Tide
Sat -- 06:39 PM EDT     0.39 feet Low Tide
Sat -- 08:10 PM EDT     Sunset
Sat -- 11:03 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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32.82.31.71.20.80.60.60.91.62.32.832.92.41.81.20.70.40.40.71.32.12.7

Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (7,2,3,4)
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Ground Weather Radar Station Sterling, VA
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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 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 numerous 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.