Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Huntington, VA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:54AMSunset 7:30PM Wednesday March 29, 2017 10:32 PM EDT (02:32 UTC) Moonrise 7:08AMMoonset 8:27PM Illumination 7% Phase: Waxing Crescent; Moon at 3 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- 731 Pm Edt Wed Mar 29 2017
Tonight..NE winds 5 kt. Waves less than 1 ft.
Thu..SE winds 5 kt. Waves less than 1 ft.
Thu night..SE winds 5 to 10 kt. Waves 1 ft. Rain likely.
Fri..SE winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog.
Fri night..W winds 5 kt. Waves less than 1 ft. Showers likely.
Sat..NW winds 5 to 10 kt. Waves 1 ft.
Sat night..NW winds 5 to 10 kt. Waves 1 ft.
Sun..S winds around 5 kt. Waves 1 ft.
Mon..SE winds 5 to 10 kt. Waves 1 ft. Showers likely through the night.
ANZ500 731 Pm Edt Wed Mar 29 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure move north of the area tonight before moving offshore Thursday. Low pressure will approach the waters Friday before passing through Friday evening. High pressure will build over the waters again by Sunday. Small craft advisories are possible Thursday night through Saturday.

7 Day Forecast for Marine Location Near Huntington, VA
   Hourly   EDIT   Help
location: 38.79, -77.07     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 300110
afdlwx
area forecast discussion
national weather service baltimore md/washington dc
910 pm edt Wed mar 29 2017

Synopsis
High pressure will pass north of the area tonight before moving
off the coast Thursday. Low pressure will pass through the area
Friday. High pressure will gradually return Saturday and Sunday
before another low pressure possibly impacts the area Monday
and Tuesday next week.

Near term /until 6 am Thursday morning/
High pressure is centered over eastern ontario and western
quebec this evening. Surface winds are taking a northeasterly
component, and the earlier CU field around staunton and
charlottesville is expanding into broken altostratus. Elsewhere,
only a little cirrus is found, which will be the case until the
lower cloud decks expand later tonight as the flow becomes
easterly. In addition, the easterly flow may result in some
spotty light rain or drizzle, mainly in the southern shenandoah
valley and adjacent highlands. Lows tonight will be cooler than
the last few nights, with readings in the 30s and 40s. Am not
planning any major adjustments to temperatures, though
variations in cloud cover and decoupling could modulate them up
or down, respectively, in some spots.

Short term /6 am Thursday morning through Saturday/
Cad will more or less remain in place in the low levels
Thursday with the high pressure sliding eastward to our north.

At the same time, low pressure system will be ejecting out of
the plains with warm/moist air advection. In addition, the
upslope flow will result in lower clouds and perhaps some light
rain or drizzle in the mountains. Highs will be cooler than
today due to the lack of Sun and onshore flow, with 50s
widespread and the cooler spots in the 40s.

Warm and moist air advection continues Thursday night and with
that we'll see increasing chances for rain. Lows mainly in the
40s. Model guidance in good agreement that the low pressure
system will track east-northeastward from near st. Louis
Thursday evening to ohio by Friday afternoon, before
redeveloping near the DELMARVA late Friday and Friday night.

Thus, most widespread coverage of moderate rain expected late
Thursday night and Friday morning, although chances of rain will
remain high into the afternoon. Half an inch of rain is likely
for most of the area, with over an inch wherever the most
favorable forcing aligns. We'll also have to monitor how far
north the warm sector can make it Friday afternoon. Latest
guidance indicates it may approach portions of central va and
southern md, so have maintained a slight chance of tstorms there
Friday afternoon. Highs on Friday uncertain, with locations
that get south of the warm front possibly heading towards 70,
while northern locales near the mason-dixon line may struggle to
reach 50. Showers will begin to slowly wind down Friday night
as the low pulls away and winds turn northwesterly.

Low pressure slides northeast of the region Saturday, but
lingering instability and weak vort MAX could produce a few
stray showers still. Highs will be in the 50s to lower 60s.

Long term /Saturday night through Wednesday/
High pressure will settle into the region Sunday through early
Monday. Dry and seasonable temperatures expected throughout the
period.

The next storm system will move into the region midday Monday
through Tuesday, bringing the chance for rain showers to the
region once again.

Brief high pressure will build into the region Wednesday before
the next storm system approaches Wednesday night.

Aviation /01z Thursday through Monday/
Vfr will continue through at least the first half of Thursday
all terminals. Winds have become northeasterly this evening,
becoming east-southeasterly on Thursday. This will help usher
in additional clouds, although ceilings still expected to remain
vfr. Highest chances for some MVFR ceilings will be at cho and
mrb, but the probability of this occurring is low until after
00z Friday.

Greater chances for sub-vfr conditions will occur Thursday night
through Friday night with widespread rainfall. Ifr conditions
likely.

A northwest flow will allow for cigs/vsbys to improve Saturday
behind departing low pressure... But a few showers cannot be
ruled out.

Vfr conditions evolving Saturday night. Winds northwest 5 knots
Saturday night.VFR conditions expected Sunday into Sunday
night. Winds becoming light and variable Sunday and Sunday
night.

Marine
Winds have taken a nne direction this evening, locally 10 to 15
knots. A surge of northeasterly winds is expected later
tonight, although magnitudes are a bit uncertain. Guidance
suggests the best window for SCA conditions will be between 11
pm and 3 am. So if gusts are not realized by this time, the sca
for the more open waters of the bay and lower potomac may be
cancelled early.

Sub-sca winds then expected Thursday, with next potential for
increasing winds on Thursday night/Friday ahead of our next
system (especially Friday), with the strongest winds expected
across our southern waters.

Low pressure will move away from the waters Saturday and
northwest flow will develop. A small craft advisory may be
needed for portions of the waters during this time.

No marine hazards expected Saturday night through Sunday
night. Winds northwest 5 to 10 knots Saturday night through
Sunday night.

Tides/coastal flooding
Low pressure will pass through the area Friday night. An
onshore flow will develop ahead of the low and this will cause
elevated water levels Friday into Friday night. Minor tidal
flooding near high tide is possible during this time.

Lwx watches/warnings/advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory until 6 am edt Thursday for anz530>534-
537-539>541-543.

Synopsis... Ads/rcm
near term... Ads/rcm
short term... Ads/rcm
long term... Klw
aviation... Ads/rcm/klw
marine... Ads/rcm/klw
tides/coastal flooding... Lwx


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 6 mi45 min NE 4.1 G 8 58°F 53°F1021.8 hPa
BSLM2 - Chesapeake Bay, MD 19 mi123 min N 2.9 59°F 1021 hPa37°F
NCDV2 33 mi45 min SE 1 G 4.1 55°F 52°F1021.2 hPa
TPLM2 - Thomas Point, MD 34 mi93 min NNE 15 G 16 54°F 48°F38°F
APAM2 - 8575512 - Annapolis, MD 34 mi45 min 54°F 1022 hPa
44062 - Gooses Reef, MD 38 mi33 min E 9.7 G 12 52°F 48°F1 ft1022.4 hPa (+1.9)
CPVM2 39 mi45 min 51°F 43°F
FSNM2 41 mi45 min NNE 12 G 14 55°F 1022 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 41 mi45 min NNE 9.9 G 11 54°F 1022.5 hPa
BLTM2 - 8574680 - Baltimore, MD 42 mi45 min NE 8 G 11 55°F 49°F1022.1 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 45 mi45 min ENE 9.9 G 11 55°F 1022.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi45 min NNE 6 G 8 56°F 49°F

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
11
PM
-12
PM
1
AM
2
AM
-12
PM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
-12
PM
5
PM
6
PM
7
PM
8
PM
-12
PM
10
PM
Last
24hr
N6
G11
N2
G6
N4
G8
N4
G10
N4
G9
N8
G12
NE6
G13
N5
G10
N8
G12
N5
G12
N6
G12
NW9
G14
N9
G12
N4
G10
N7
G14
N3
G6
N2
G7
NE4
NE5
G9
NE5
G10
1 day
ago
E2
--
--
--
--
--
NW1
S2
S3
S6
G9
W4
G12
W6
NW5
NW10
G15
NW5
G10
NW8
W5
NW9
G12
NW5
G11
N4
G7
N4
G10
2 days
ago
E4
G7
E4
E3
E2
E3
E1
G4
E2
N1
E2
S2
S3
S5
S5
S6
S5
S3
S2
W2
--
S2
NE2
NE1
E3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Washington/Reagan National Airport, DC, VA5 mi41 minNE 1110.00 miA Few Clouds57°F35°F44%1022.4 hPa
Fort Belvoir, VA7 mi35 minNNE 410.00 miFair57°F33°F42%1022.3 hPa
Camp Springs / Andrews Air Force Base, MD11 mi95 minNE 910.00 miFair54°F34°F46%1021.7 hPa
College Park Airport, MD15 mi52 minNNE 610.00 miFair54°F32°F43%1022 hPa
Quantico Marine Corps Airfield - Turner Field, VA23 mi37 minS 310.00 miFair56°F45°F67%1022.3 hPa
Washington/Dulles International Airport, DC, VA23 mi41 minNE 1010.00 miA Few Clouds55°F35°F47%1021.9 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA24 mi37 minNE 410.00 miFair54°F37°F53%1022 hPa

Wind History from DCA (wind in knots)
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
7
PM
8
PM
9
PM
10
PM
Last 24hrN9N8N7N10NW7N7N8N10N10N11N10N12N12N9NW9N13N10N9NE6N9N10NE11NE10NE11
1 day agoNE4CalmCalmCalmCalmS5S3S6S3S6S7W9SW8W9W10NW10N12NW6NW8NW11NW10NW8N5N8
2 days agoE6E9E6E4E5CalmE3CalmN3SE3S3S6S8S6S6S7SE3NE5N4NE3E12NE3NE3N7

Tide / Current Tables for Alexandria, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Alexandria
Click for Map
Wed -- 04:05 AM EDT     0.02 feet Low Tide
Wed -- 06:57 AM EDT     Sunrise
Wed -- 08:07 AM EDT     Moonrise
Wed -- 09:44 AM EDT     3.47 feet High Tide
Wed -- 04:45 PM EDT     -0.07 feet Low Tide
Wed -- 07:29 PM EDT     Sunset
Wed -- 09:27 PM EDT     Moonset
Wed -- 10:16 PM EDT     3.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.30.70.200.20.91.92.83.43.53.12.41.710.40-0.10.31.22.22.93.23.1

Tide / Current Tables for Washington, Potomac River, D.C.
   EDIT      (on/off)   Help   One Week of Data
Washington
Click for Map
Wed -- 04:25 AM EDT     0.02 feet Low Tide
Wed -- 06:57 AM EDT     Sunrise
Wed -- 08:07 AM EDT     Moonrise
Wed -- 09:38 AM EDT     3.43 feet High Tide
Wed -- 05:05 PM EDT     -0.07 feet Low Tide
Wed -- 07:29 PM EDT     Sunset
Wed -- 09:27 PM EDT     Moonset
Wed -- 10:10 PM EDT     3.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.40.80.30.10.10.71.82.83.33.432.41.71.10.60.1-0.10.212.12.83.13

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 (22,6,7,8)
      (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.