Monday, September25, 2017 L-36.com


Marine Weather and Tides
Port Royal, 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 6:59AMSunset 7:02PM Monday September 25, 2017 6:22 PM EDT (22:22 UTC) Moonrise 11:05AMMoonset 9:33PM Illumination 27% 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
    EDIT      (on/off)   Help
ANZ536 Tidal Potomac From Indian Head To Cobb Island- 501 Pm Edt Mon Sep 25 2017 E Winds 10 Kt. Waves 1 Ft.
Tonight..NE winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to 3 nm.
Tue..NE winds 5 to 10 kt. Waves 1 ft. Patchy fog. Vsby 1 to 3 nm.
Tue night..N winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 to 10 kt. Waves 1 ft.
Wed night..N winds 5 kt. Waves less than 1 ft.
Thu..N winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 1 to 2 ft.
Fri..NW winds around 5 kt. Waves 1 ft.
ANZ500 501 Pm Edt Mon Sep 25 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A ridge of high pressure will remain over the waters through tonight, then it will weaken overhead Tuesday through Wednesday as hurricane maria drifts north to northeast off the north carolina coast. A cold front will pass through the area Thursday and a reinforcing cold front will pass through late Friday into Friday night. High pressure will likely return for the weekend. Small craft advisories may be needed Tuesday night through Wednesday night and gale force winds are possible Thursday. Refer to the national hurricane center for up-to-date information on hurricane maria.

7 Day Forecast for Marine Location Near Port Royal, VA
   Hourly   EDIT   Help
location: 38.22, -77.28     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 251910
afdlwx
area forecast discussion
national weather service baltimore md washington dc
310 pm edt Mon sep 25 2017

Synopsis High pressure will slowly weaken its grip over the
area Tuesday and Wednesday as hurricane maria moves northward
through the western atlantic. A cold front will move through
Thursday, bringing more seasonable temperatures for the end of
the week. Little if any rain is expected.

Near term until 6 am Tuesday morning Ridge of high pressure
will hold through tonight although it will be weakening. Patchy
late night fog is possible again overnight, otherwise mostly
clear skies are expected.

Short term 6 am Tuesday morning through Wednesday night
Clouds associated with hurricane maria will spread
northwestward early Tue morning and as far west as the blue
ridge mountains. There could be a few showers in southern md,
otherwise thickening clouds.

Long term Thursday through Monday
Conditions will be dry for Thursday into Friday with cold front
to our east and high pressure building from the west over our
area. In the meantime, hurricane maria will be moving away from
the us east coast.

An upper trough could bring some showers over our area late Friday
into Saturday, but dry conditions return for the rest of the long
term period with high pressure building in over our region. High
temperatures will be near normal around 70s or 80s... Colder at
higher elevations.

Aviation 19z Monday through Saturday
Except for some patchy late night fog,VFR conditions are
expected.

Vfr conditions expected Thursday into Saturday. Some
showers possible Friday night.

Marine Winds will strengthen tonight through Wednesday as
pressure gradient tightens in response to approaching hurricane
maria. A cold front will move through the area early Thu with
gales possible. Winds will diminish Thu night.

Small craft advisory expected Thursday into Friday for some
zones of our waters. Lighter wind gusts expected for Saturday.

Tides coastal flooding
Lwx watches warnings advisories
Dc... None.

Md... Coastal flood advisory from 6 pm to 8 pm edt this evening for
mdz017.

Va... None.

Wv... None.

Marine... Small craft advisory from 7 am to 6 pm edt Tuesday for anz533-
534-537-541>543.

Synopsis... Lfr
near term... Lfr
short term... Lfr
long term... Imr
aviation... Imr lfr
marine... Imr lfr dfh
tides coastal flooding... Lfr


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
NCDV2 15 mi53 min ENE 1.9 G 5.1 84°F 79°F1014.2 hPa
PPTM2 - 8578240 - Piney Point, MD 40 mi53 min E 9.9 G 12
SLIM2 - 8577330 - Solomons Island, MD 44 mi53 min N 5.1 G 8.9 82°F 78°F1014.6 hPa
LWTV2 - 8635750 - Lewisetta, VA 46 mi53 min SE 8.9 G 9.9 79°F 79°F1015 hPa
WASD2 - 8594900 - Washington, DC 47 mi53 min E 1.9 G 6 88°F 77°F1015.2 hPa
BSLM2 - Chesapeake Bay, MD 49 mi173 min NNE 2.9 85°F 1015 hPa65°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 49 mi53 min NNE 9.9 G 12 80°F 1015.6 hPa

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
5
PM
6
PM
Last
24hr
SE3
E2
--
NE2
NE4
E3
E3
E4
NE5
NE5
NE4
NE4
NE5
E4
E7
E7
SE5
E5
SE5
E6
SE8
E8
G11
E7
S13
1 day
ago
NW3
NE3
NE2
W4
N3
N4
NW5
N5
N8
N7
NW7
N9
N9
NW7
NW5
NW7
NW6
NW5
S2
S5
S5
S4
2 days
ago
NW7
N2
NW4
N2
N4
N6
N10
N9
N4
N6
N7
N6
N6
N7
NW9
N4
NW10
NW10
N9
N10
N12
G15
NE7
NW6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fredericksburg, Shannon Airport, VA10 mi28 minNE 410.00 miFair84°F68°F60%1014.9 hPa
Stafford, Stafford Regional Airport, VA15 mi28 minESE 410.00 miFair82°F68°F65%1016.6 hPa
Quantico Marine Corps Airfield - Turner Field, VA20 mi27 minSE 610.00 miFair82°F73°F74%1015.5 hPa

Wind History from EZF (wind in knots)
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
3
PM
4
PM
5
PM
6
PM
Last 24hrE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmNE4NE6NE7E8NE6NE6NE6
1 day agoN3CalmCalmCalmCalmCalmCalmCalmW3CalmCalmCalmW3CalmCalmN3N5N4N6E6NE4E3NE6E5
2 days agoN5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN4N3NE6N5N4N7NE7N4E3

Tide / Current Tables for Corbins Neck, Rappahannock River, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Corbins Neck
Click for Map
Mon -- 05:54 AM EDT     0.44 feet Low Tide
Mon -- 06:59 AM EDT     Sunrise
Mon -- 11:11 AM EDT     2.80 feet High Tide
Mon -- 12:04 PM EDT     Moonrise
Mon -- 05:39 PM EDT     0.41 feet Low Tide
Mon -- 07:00 PM EDT     Sunset
Mon -- 10:33 PM EDT     Moonset
Mon -- 11:22 PM EDT     3.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.82.31.71.20.80.60.40.71.42.12.62.82.72.31.71.10.70.50.40.71.42.22.83

Tide / Current Tables for Port Royal, Rappahannock River, Virginia
   EDIT      (on/off)   Help   One Week of Data
Port Royal
Click for Map
Mon -- 04:23 AM EDT     0.33 feet Low Tide
Mon -- 06:59 AM EDT     Sunrise
Mon -- 09:55 AM EDT     1.96 feet High Tide
Mon -- 12:04 PM EDT     Moonrise
Mon -- 04:06 PM EDT     0.30 feet Low Tide
Mon -- 07:00 PM EDT     Sunset
Mon -- 10:05 PM EDT     2.14 feet High Tide
Mon -- 10:33 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.10.70.50.30.40.71.21.61.921.81.410.60.40.30.40.71.21.722.12

Weather Map and Satellite Images
       (on/off)   Help
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 (18,4,5,8)
      (on/off)   Help

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

Ad by Google

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.