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Marine Weather and Tides Shenandoah Farms, VA Version 3.4

NOTICE 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:26AM

Sunset 8:07PM

Saturday August 17, 2019 8:59 AM EDT (12:59 UTC)

Moonrise 8:32PM

Moonset 7:13AM

Illumination 96%

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.

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7 Day Forecast for Marine Location Near Shenandoah Farms, VA

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Area Discussion for - Baltimore, MD/Washington

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Fxus61 klwx 170754 afdlwx area forecast discussion national weather service baltimore md washington dc 354 am edt Sat aug 17 2019 Synopsis An upper-level ridge will build overhead through Monday, with surface high pressure in the atlantic. Hot and humid conditions will persist during this time. The upper-level ridge will gradually weaken Tuesday and Wednesday before a cold front passes through Thursday. High pressure will return for late next week, bringing noticeably cooler and less humid conditions. Near term through tonight A warm and moist airmass engulfs the area this morning with temperatures ranging from the middle 60s in the mountains to middle 70s further east into the metros and near the bay. A weak stationary boundary is draped across the area, stretching from central virginia and over the delmarva. Earlier showers over the shenandoah valley and along the chesapeake bay have dwindled the last couple of hours, with no other echos being detected by the local radars. Low stratus clouds and patchy fog is expected early this morning given the moist airmass in place and very weak flow. The stationary boundary will linger to our southeast today, as high pressure situates itself over the western atlantic, and heights aloft rise. This will promote very warm and humid conditions as temperatures rise into the upper 80s and lower 90s area wide this afternoon. This will push heat indices into the upper 90s to near the century mark along and east of the i-95 corridor, with middle 90s more prevalent along and west of the blue ridge. If planning on spending time outdoors today, be sure to stay hydrated and take frequent breaks in the shade to combat any potential heat related illnesses. With rising heights and a general west southwest flow aloft, not expecting more than isolated coverage of showers and thunderstorms. Activity will be mainly driven by the hot and humid airmass in place, and subtle shortwave energy aloft. So do expect much of the area to remain dry. Any showers or storms that develop this afternoon will wane this evening and overnight, as low clouds and patchy fog return given no discernible change in the dominate weather features. Muggy conditions tonight as lows hold in the upper 60s to middle 70s. Short term Sunday through Monday night The heat and humidity continue to rise Sunday and Monday as southerly flow persists around the high over the western atlantic. Temperatures will increase a touch each day, with low to middle 90s being observed. This will result in heat indices cracking the century mark, in the low 100s and currently forecast just under heat advisory criteria. Will have to monitor this the next couple of days should dewpoints temps run a touch higher than currently forecast. A little strong shortwave swings across the area Sunday, so have increased pops slightly over nne maryland, with scattered showers and thunderstorms possible Sunday afternoon and evening. Another shot of showers and thunderstorms will exist Monday afternoon evening as well, but with even weaker lift aloft, the main trigger will be left to terrain circulations. As such will favor along and west of the blue ridge for scattered showers and thunderstorms, diminishing overnight Monday. Long term Tuesday through Friday The upper-level ridge will gradually break down Tuesday through Wednesday as an upper-level trough digs over the great lakes. Surface high pressure will remain over the atlantic during this

time. Therefore, hot and humid conditions will persist and with lower heights in place, this will increase the chances for showers and thunderstorms. Some storms may be strong to perhaps even severe due to high amounts of instability from the hot and humid conditions. However, confidence remains low this far out. The upper-level trough will continue to dig south and east into the northeast CONUS as well as the mid-atlantic. The cold front associated with this system is also likely to pass through during this time, bringing chances for more showers and thunderstorms. High pressure behind the front is expected to build overhead for Friday, bringing noticeably cooler and less humid conditions. Aviation 07z Saturday through Wednesday MVFR ifr vis CIGS are plausible at the terminals the next few mornings as a warm and moist airmass lingers over the region. Afternoon evening showers and storms could yield episodes of sub vfr conditions, but coverage is expected to be too widespread for TAF inclusion at this time. With high pressure situated over the western atlantic, a light southerly flow will prevail through Monday. High pressure will remain over the atlantic, but an upper-level trough will build overhead. This will increase the chances for showers and thunderstorms each day, especially during the afternoon and evening hours. Marine High pressure over the western atlantic will deliver a light southerly flow over the waters, thus SCA conditions not expected through Monday. Gusty showers storms are possible each afternoon evening, however much of the time is expected to remain dry. High pressure will remain over the atlantic for Tuesday and Wednesday, causing a south to southwest flow over the waters. Winds may come close to SCA criteria at times due to southerly channeling. Tides coastal flooding Elevated tides this morning will yield near minor flooding at southwest waterfront in the district with the morning high tide cycle. Will continue to monitor trends the next couple of hours to determine if an advisory is necessary. All other sites are expected to remain below minor flood, reaching only action at our sensitive sites. A gradual decrease in tidal levels are expected after this mornings tidal cycle, thus lessening the threat of coastal flooding. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... None. Synopsis... Bjl near term... Bkf short term... Bkf long term... Bjl aviation... Bjl bkf marine... Bjl bkf tides coastal flooding... Bkf

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
WASD2 - 8594900 - Washington, DC	54 mi	59 min	E 1 G 1.9	79°F	83°F		1015.6 hPa (+0.6)
BSLM2 - Chesapeake Bay, MD	71 mi	149 min	NW 1	73°F			1015 hPa	73°F
BLTM2 - 8574680 - Baltimore, MD	78 mi	59 min	E 7 G 8.9	78°F	82°F		1015.1 hPa (+0.5)

Wind History for Washington, DC

(wind in knots)    EDIT      (on/off)   Help

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Winchester Regional, VA	12 mi	64 min	N 0	10.00 mi	Partly Cloudy	70°F	68°F	94%	1016.9 hPa
Leesburg / Godfrey, VA	24 mi	64 min	N 3	7.00 mi	Overcast	70°F	69°F	100%	1016.6 hPa

Link to 5 minute data for KOKV

Wind History from OKV (wind in knots)

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Tide / Current Tables for Chain Bridge, D.C.

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Tide / Current Tables for Chain Bridge, one mile below, D.C.

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Weather Map and Satellite Images

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GOES 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

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Wind Forecast for Baltimore, MD/Washington (8,2,3,4)

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Ground Weather Radar Station Sterling, VA

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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.