Monday, August10, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Shenandoah, 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 6:24AMSunset 8:16PM Monday August 10, 2020 2:34 PM EDT (18:34 UTC) Moonrise 11:02PMMoonset 11:55AM Illumination 57% Phase: Waning Gibbous; Moon at 21 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
    EDIT      (on/off)   Help
ANZ536 Tidal Potomac From Indian Head To Cobb Island- 148 Pm Edt Mon Aug 10 2020
This afternoon..S winds 5 kt. Waves less than 1 ft. Isolated showers and tstms.
Tonight..S winds 5 kt. Waves less than 1 ft.
Tue..S winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Tue night..S winds 5 kt. Waves less than 1 ft.
Wed..S winds 5 kt. Waves less than 1 ft. A chance of showers.
Wed night..SE winds around 5 kt. Waves 1 ft. A chance of showers and tstms.
Thu..SE winds around 5 kt. Waves 1 ft. Showers likely with a chance of tstms, then a chance of showers after midnight.
Fri..SE winds 5 kt. Waves less than 1 ft. Showers likely with a chance of tstms, then a chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 148 Pm Edt Mon Aug 10 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters through Tuesday. A cold front will approach from the northwest during the middle of the week, stalling in the area as the week progresses.


7 Day Forecast for Marine Location Near Shenandoah, VA
   Hourly   EDIT   Help
location: 38.48, -78.64     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 101421 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1021 AM EDT Mon Aug 10 2020

SYNOPSIS. High pressure will settle to the south of our area through tonight. A cold front will approach late Tuesday into Tuesday night and remain stalled near our area through the end of the week.

NEAR TERM /THROUGH TONIGHT/. Aside from a few mid-level cumulus near Highland County in Virginia, the entire region has few to no clouds as of 10am. As we venture into the afternoon, additional cumulus clouds will develop across the region with the earlier development expected to be along the Blue Ridge Mountains due to daytime differential heating. Our afternoon will be warm one with high temperatures reaching the lower to middle 90s. This heating, along with moisture in place of dewpoint temperatures in the lower to middle 70s will spark a couple of isolated to widely scattered showers and thunderstorms. Any part of our CWA could encounter a shower or thunderstorm will possible early development in the Potomac Highlands and along the central Blue Ridge Mountains. Heat indice values will reach the upper 90s and low 100s.

Dry conditions expected tonight after early evening showers and thunderstorms dissipate and weak high pressure builds overhead. Fog could develop again late tonight.

SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/. Southerly flow will continue on Tuesday ahead of an approaching boundary as high pressure remains centered over the western Atlantic. Warm and moist air advection will again allow for heat index values to reach the upper 90s, maybe a few areas in the triple digits. Shortwave energy aloft and diurnal heat will allow for another day of afternoon and evening showers and thunderstorms as the front continues to approach our area. Drier conditions on Tuesday night.

On Wednesday, the surface boundary continues to move into our region and stalls into Wednesday night near our area. Shortwave stalls near the Ohio Valley while pulses of shortwave energy move into our region. Chances for showers and thunderstorms will increase on Wednesday, with chance of precip remaining into the nighttime hours. Heat index values again will reach the upper 90s and maybe the low 100s as we remain under southerly flow.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. Guidance remains in relatively good agreement regarding the progression of weather features late this week. On Thursday, a cold front will be stalling out just north of our region. A weak upper low will be centered near Omaha and another low will be near the Carolina coast. The front will remain nearly stationary through Sunday, though will drop a bit further south Saturday. The upper disturbance near the Carolina coast will move north and then east, into the open Atlantic, while the low near Omaha will move towards Detroit by Sunday.

This pattern will result in gradually diminishing temperatures as clouds and shower/t-storm chances increase, with highs in the upper 80s Thursday dropping into the low-mid 80s Friday-Sunday. There will be a modest severe weather risk along with at least a marginal flood risk. This may be enhanced by tropical moisture injected into the region by the disturbance that will be along the Carolina coast on Thursday.

AVIATION /14Z MONDAY THROUGH FRIDAY/. VFR conditions are expected over the terminals through this afternoon. Any reduction in conditions to MVFR will be from a heavy shower or thunderstorm moving overhead this afternoon and early evening. Any storms will be isolated to scattered. Tuesday chances of afternoon convection increases ahead of an approaching front, and chances will be higher on Wednesday with the boundary near our area.

Main aviation concern on Thursday and Friday will be thunderstorms, primarily in the afternoon and evening hours. Storm coverage will likely be higher on Friday.

MARINE. Winds are expected to remain below Small Craft Advisory criteria through tonight. Winds may gust into the teens on Tuesday and Wednesday afternoons, but looks like they will remain below SCA criteria. Some convection could bring gusty winds this afternoon and evening. Chances for convection increase on Tuesday and Wednesday ahead of a front.

Main marine concern on Thursday and Friday will be thunderstorms, primarily in the afternoon and evening hours. Storm coverage will likely be higher on Friday.

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

SYNOPSIS . IMR NEAR TERM . IMR/KLW SHORT TERM . IMR LONG TERM . RCM AVIATION . RCM/KLW MARINE . RCM/KLW


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 90 mi46 min S 5.1 G 8 89°F 82°F1016.9 hPa

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
S10
--
S4
S4
S6
S6
S5
S2
SE2
S4
S3
S5
S4
S4
SW4
SW3
SW2
S2
S3
--
SE2
S2
S4
S5
1 day
ago
S2
W3
NE4
G9
W2
G5
W2
S3
SE4
SE4
SE2
S3
SE2
SE2
SW2
SE5
SW1
G4
SW1
--
SW1
S3
S4
S5
S7
S5
G8
S7
G10
2 days
ago
S6
G9
S6
S8
S8
S5
G9
S4
G7
SW3
G9
NE5
G12
N3
G8
NE1
SE3
E1
--
E1
NE1
G4
NE2
NE1
G4
NE3
NE4
--
NW1
G4
S1
G4
--
SE1

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Staunton / Shenandoah, VA18 mi39 minN 010.00 miFair86°F62°F44%1019.6 hPa

Link to 5 minute data for KW45

Wind History from W45 (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrCalmN5S3CalmS6S4S6N8NW16
G24
NW3
G8
NW8NW12
G15
NW5
G14
NW9
G14
N6N7
G15
CalmN6N3NE3N3CalmN5N8
1 day agoN3Calm----CalmCalmCalmCalmCalmSW5CalmE4CalmCalmCalmS4CalmCalmCalmCalmCalmSE6CalmCalm
2 days agoNW8N6N7
G14
N8N3N6CalmNW6N7N5NW4N4N10
G14
S4S3CalmCalmCalmCalmCalmS4NW3CalmCalm

Tide / Current Tables for Fredericksburg, Rappahannock River, Virginia
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Fredericksburg
Click for Map
Mon -- 12:25 AM EDT     3.11 feet High Tide
Mon -- 06:20 AM EDT     Sunrise
Mon -- 07:22 AM EDT     0.69 feet Low Tide
Mon -- 12:48 PM EDT     2.82 feet High Tide
Mon -- 12:50 PM EDT     Moonset
Mon -- 07:08 PM EDT     0.46 feet Low Tide
Mon -- 08:09 PM EDT     Sunset
Mon -- 11:57 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
3.13.12.82.21.71.20.90.70.71.11.82.42.72.82.62.21.610.60.50.50.91.72.5

Tide / Current Tables for Massaponax, Rappahannock River, Virginia
   EDIT      (on/off)   Help   One Week of Data
Massaponax
Click for Map
Mon -- 12:16 AM EDT     2.71 feet High Tide
Mon -- 06:20 AM EDT     Sunrise
Mon -- 07:38 AM EDT     0.61 feet Low Tide
Mon -- 12:39 PM EDT     2.47 feet High Tide
Mon -- 12:49 PM EDT     Moonset
Mon -- 07:24 PM EDT     0.40 feet Low Tide
Mon -- 08:08 PM EDT     Sunset
Mon -- 11:57 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.72.72.421.51.10.80.60.60.91.52.12.42.52.31.91.40.90.60.40.40.81.42.2

Weather Map
       (on/off)   Help Weather Map
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 (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Sterling, VA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 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.