Tuesday, September25, 2018 L-36.com


Marine Weather and Tides
Woodbridge, VA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:58AMSunset 7:01PM Tuesday September 25, 2018 8:53 AM EDT (12:53 UTC) Moonrise 6:43PMMoonset 6:17AM Illumination 100% Phase: Full Moon; Moon at 15 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
ANZ535 Tidal Potomac From Key Bridge To Indian Head- 736 Am Edt Tue Sep 25 2018
Today..S winds 5 to 10 kt. Waves 1 ft. Patchy fog this morning. Scattered showers with areas of drizzle this morning, then scattered showers with isolated tstms this afternoon. Vsby 1 to 3 nm this morning.
Tonight..S winds 5 kt. Waves less than 1 ft. Patchy fog. Vsby 1 to 3 nm.
Wed..SW winds 5 to 10 kt. Waves 1 ft. Numerous showers and scattered tstms. Patchy fog. Vsby 1 to 3 nm.
Wed night..NW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Thu..NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Thu night..E winds 5 kt. Waves less than 1 ft. A chance of showers.
Fri..SE winds around 5 kt. Waves 1 ft. A chance of showers.
Sat..NW winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 736 Am Edt Tue Sep 25 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will push northward across the waters today. A cold front will then approach the waters from the ohio valley Wednesday, and will likely stall south of the waters Thursday. Small craft advisories may be needed Wednesday night and Thursday.


7 Day Forecast for Marine Location Near Woodbridge, VA
   Hourly   EDIT   Help
location: 38.65, -77.22     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 250808
afdlwx
area forecast discussion
national weather service baltimore md washington dc
408 am edt Tue sep 25 2018

Synopsis
A warm front will slowly lift north across the region today. A
strong cold front will then cross the region late Wednesday. A
wave of low pressure may pass southeast of the region Thursday
into Thursday night. Another, weaker cold front may cross the
region over the weekend.

Near term through Wednesday
Warm front is slowly pushing north of the region at present,
though warm advection is producing plenty of showers and
drizzle. As the front continues to lift northward through the
day, expect temperatures to gradually continue warming, with
showers, drizzle and fog slowly dwindling from southeast to
northwest. By late afternoon, most areas should be well into the
70s or low 80s. The warmth and humidity may produce a stray
thunderstorm this afternoon, but coverage should be small.

Tonight a lull in precip will envelop the area as we sit in the
warm sector. This will likely promote some patchy fog given the
high moisture and light winds, though cloud cover will mitigate
this somewhat. Lows will remain mild, with 60s and perhaps some
low 70s.

Strong cold front will then approach from the northwest on
Wednesday. The morning should be fairly quiet, but by afternoon,
thunderstorms will start developing to the northwest and then
cross the region from northwest to southeast. With highs
expected to reach the 80s with high dew points, CAPE should
approach 2000 j kg, possibly exceeding 2000, and shear will be
in the 20-30 knot range, possibly exceeding 30 knots late, so
some severe thunderstorms look probable. SPC has placed much of
the region from i-95 north adnd west in a sligh risk.

Short term Wednesday night through Thursday night
Strong cold front will cross the region most likely during the
evening Wednesday, though there remain some timing differences
among the guidance. Thunderstorms will progress southeastward,
likely clearing the region. However, the front looks to stall,
and guidance is hinting at a wave of low pressure developing and
moving northeast along the stalled front later Thursday into
Thursday night. Thus, the chance of showers will linger even as
cooler air builds southward behind the front. Lows Wednesday
night and highs on Thursday will be considerably cooler, with
few places staying in the 60s at night, and many locales failing
to reach 70 on Thursday.

Long term Friday through Monday
A dry frontal passage is expected Sat afternoon that will bring
slightly cooler air for Sun and mon. Upper level flow is then
expected to become largely zonal early next week, while at the
surface, weak high pressure will settle northeast of the area
keeping generally fair weather conditions and seasonable
temperatures.

Aviation 08z Tuesday through Saturday
Warm front slowly lifting north across the region has produced
low CIGS and vis in drizzle and showers. This will gradually
wane through the day as the front lifts north, though a shower
or thunderstorm will remain possible at all terminals this
afternoon. Last place to break into the warm sector will likely
be mrb. Patchy fog will be a concern again tonight, but
otherwise it should dry out. Wednesday will start dry, but gusty
thunderstorms are possible in the afternoon, which may linger
into the evening. Showers may then linger at times through
Thursday night, with associated reductions in cig vis possible.

A dry frontal passage is expected Saturday with shifting winds.

Marine
Diminishing winds this morning as the warm front lifts
northward, so may be able to cut some of the SCA out. That said,
southerly flow may continue to produce gusts over the bay much
of the day. Winds will stay gusty as a cold front crosses the
area later Wednesday, and special marine warnings may also be
necessary due to strong thunderstorms. Winds turn north and
gusty behind the front Thursday, with lingering showers.

Winds will remain below SCA and generally below 10 kt Friday
through Sunday.

Tides coastal flooding
Water levels are expected to continue to slowly rise through
tonight and then begin to slowly recede Wed before dropping more
sharply Wed night as cold front pushes south as winds shift to
the nnw. Expect the next two high tide cycles to see minor to
moderate coastal flooding along the potomac river and chesapeake
bay. Minor coastal flooding could persist into Wed before water
levels drop more rapidly Wed night. Have extended advisories
and warnings through tonight as confidence is high on
experiencing coastal flooding.

Lwx watches warnings advisories
Dc... Coastal flood watch from 1 pm edt this afternoon through
Wednesday afternoon for dcz001.

Coastal flood advisory until 1 pm edt this afternoon for
dcz001.

Md... Coastal flood watch from this afternoon through Wednesday
morning for mdz014.

Coastal flood advisory until 4 pm edt this afternoon for
mdz014.

Coastal flood advisory until 8 am edt Wednesday for mdz016.

Coastal flood warning until 6 am edt Wednesday for mdz017.

Coastal flood watch from Wednesday morning through Wednesday
afternoon for mdz017.

Coastal flood advisory until 6 am edt Wednesday for mdz018.

Coastal flood advisory from 9 am this morning to midnight edt
tonight for mdz508.

Coastal flood advisory until 11 am edt Wednesday for mdz011.

Va... Coastal flood advisory until 8 am edt Wednesday for vaz057.

Coastal flood watch from 1 pm edt this afternoon through
Wednesday afternoon for vaz054.

Coastal flood advisory until 1 pm edt this afternoon for
vaz054.

Wv... None.

Marine... Small craft advisory until noon edt today for anz532-533-
540>542.

Small craft advisory until 6 pm edt this evening for anz534-
537-543.

Small craft advisory until 10 am edt this morning for anz530-
531-538-539.

Small craft advisory until 6 am edt early this morning for
anz535-536.

Synopsis... Rcm
near term... Rcm
short term... Rcm
long term... Lfr
aviation... Rcm lfr
marine... Rcm lfr
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
WASD2 - 8594900 - Washington, DC 19 mi41 min 69°F 70°F1024.2 hPa
NCDV2 25 mi35 min 72°F 71°F1023.3 hPa
BSLM2 - Chesapeake Bay, MD 29 mi143 min SE 1 62°F 1024 hPa62°F
44062 - Gooses Reef, MD 43 mi33 min SSE 7.8 G 12 73°F 1025.3 hPa
TPLM2 - Thomas Point, MD 45 mi53 min SE 8.9 G 11 70°F 71°F1025.2 hPa (+0.4)69°F
APAM2 - 8575512 - Annapolis, MD 46 mi35 min 71°F 1023.9 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 47 mi35 min 1025 hPa
SLIM2 - 8577330 - Solomons Island, MD 47 mi35 min 74°F 75°F1024.2 hPa

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last
24hr
N2
NE3
G7
NE4
G8
N2
G5
SE2
G8
SE2
G8
E3
G8
E3
G7
E3
G9
E3
G6
NE3
G6
NE2
G5
NE2
G8
E4
G7
NE1
G8
NE1
G5
E2
G6
SE2
G5
E2
G5
NE1
G4
NE2
G5
--
NE2
--
1 day
ago
N2
G5
N4
N4
NE1
G5
N1
G5
NE2
NE2
G8
NE5
G8
NE5
G8
N3
G6
N4
G10
N4
G8
N3
G7
N2
G6
NE3
G7
N3
G6
N3
G6
N4
G8
N4
G7
NE3
G8
N3
G8
NE3
G8
NE1
G4
NE2
G6
2 days
ago
W3
N5
G10
NW6
G12
N6
G9
NW7
G12
N8
G14
N6
G10
NW7
G13
N5
G9
N5
G8
N6
G13
NE4
G9
N7
G11
N4
G9
N3
G6
NE1
G5
N3
G6
N2
G5
N1
G4
N3
G7
N3
G6
N6
N6
NE1
G4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA6 mi2 hrsN 010.00 miOvercast68°F68°F100%1024 hPa
Quantico Marine Corps Airfield - Turner Field, VA11 mi57 minSE 33.00 miFog/Mist70°F70°F100%1024.4 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA17 mi57 minN 08.00 miOvercast68°F66°F96%1025.3 hPa
Washington/Reagan National Airport, DC, VA18 mi61 minN 39.00 miOvercast70°F66°F90%1024.3 hPa
Stafford, Stafford Regional Airport, VA21 mi58 minN 00.50 miLight Rain70°F70°F100%1025.4 hPa
Camp Springs / Andrews Air Force Base, MD22 mi57 minESE 65.00 miFog/Mist69°F68°F100%1024.6 hPa

Wind History from DAA (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last 24hrCalmCalmCalmE3NE4E3Calm5--CalmCalmCalmE3CalmE3E3E3CalmCalmCalmCalmCalmCalmSE3
1 day agoNW5CalmN3CalmNE3CalmCalmN3CalmCalmN3CalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalm
2 days ago--NW4NW5NW9NW6--N4--CalmN4N5CalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalm

Tide / Current Tables for High Point, Occoquan Bay, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Deep Point, Mattawoman Creek, Potomac River, Maryland
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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
Wind Forecast for Baltimore, MD/Washington (8,2,3,4)
      (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.