Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Matoaca, 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 6:55AMSunset 7:32PM Thursday March 30, 2017 2:35 AM EDT (06:35 UTC) Moonrise 7:52AMMoonset 9:37PM Illumination 8% 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
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ANZ637 James River From Jamestown To The James River Bridge- 109 Am Edt Thu Mar 30 2017
Rest of tonight..E winds 5 kt. Waves 1 foot.
Thu..E winds 5 to 10 kt. Waves 1 foot.
Thu night..SE winds 10 kt. Waves 1 to 2 ft. A chance of showers after midnight.
Fri..S winds 10 to 15 kt. Waves 1 to 2 ft. Showers in the morning... Then showers with a chance of tstms in the afternoon.
Fri night..W winds 10 to 15 kt. Waves 1 foot. A chance of tstms early in the evening. Showers until early morning. A chance of showers late.
Sat..NW winds 5 to 10 kt. Waves 1 to 2 ft.
Sat night..N winds 5 to 10 kt. Waves 1 foot.
Sun..N winds 5 kt. Waves 1 foot.
Sun night..SE winds 5 kt. Waves 1 foot.
Mon..SE winds 5 to 10 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ600 109 Am Edt Thu Mar 30 2017
Synopsis for fenwick island de to currituck beach light nc out 20 nautical miles including virginia portion of the chesapeake bay currituck sound and portions of the james, york, and rappahannock rivers.. High pressure builds into the region from the north today and tonight. The high slowly pushes offshore late Thursday into Thursday night. Low pressure and another cold front will approach from the west on Friday...moving across the area Friday night. High pressure returns for the upcoming weekend.

7 Day Forecast for Marine Location Near Matoaca, VA
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location: 37.22, -77.53     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 300145
afdakq
area forecast discussion
national weather service wakefield va
945 pm edt Wed mar 29 2017

Synopsis
High pressure becomes centered off the northeast coast tonight and
Thursday. Low pressure and associated frontal boundaries track
across the region Friday. High pressure builds over the area for the
weekend.

Near term /until 6 am Thursday morning/
Current WV imagery shows a potent low over the central plains,
with an upper ridge extending nwd from the southeast conus
through the ohio valley and ERN great lakes. At the surface,
high pressure is centered over james bay, and will build into
the mid-atlantic from the N this evening and will continue
expand swd overnight, with a light ene wind developing. Mostly
clear this evening, with increasing clouds after midnight,
primarily across the piedmont. Cooler tonight with lows ranging
from the upper 30s/around 40 n/ne, to the low/mid 40s s.

Short term /6 am Thursday morning through Saturday/
H5 ridge becomes centered off the coast Thursday. Tsctns show
moisture at various levels due to WAA atop the stable onshore flow.

Expect partly cloudy skies east, mstly cloudy to cloudy west with
any upslope shwr activity remaining west of the fa. Given weak/low
mixing and the cloud coverage, expect a cooler day with highs 55-60
except 50-55 at the beaches.

Moisture increases late Thursday night ahead of approaching upr
level low. Will keep the evening dry with shwrs overspreading the
area after midnight. Pops range from chc along the coast to likely
across the piedmont. Lows in the low-mid 40s.

Rather challenging forecast Friday as the models continue to prog a
strong closed low to become negatively tilted as it crosses the
region. Main sfc low to track north of the fa but data suggests
another spoke of energy will rotate arnd the main low resulting in a
triple point low crossing northern va Friday afternoon and evening
before moving off the nj coast Friday night. Copious amounts of
atlantic moisture forecasted ahead of the low along with pw's btwn
1.25 to 1.50 inches. This will lead to locally heavy downpours
Friday. Challenge for the afternoon will be the amount of convection
that develops. SPC has the southern half of the fa in a marginal
risk but a lot of uncertainty remains on just how unstable it
becomes. Thus, categorical pops will be maintained across the fa
with thunder chcs limited to the afternoon and mainly across
the south. Slght chc thunder across the north. Temps tricky and
may depend on any heating that occurs. Highs in the 60s except
near 70 southern most zones.

Likely to categorical pops continue Friday evening with pops
tapering off after midnight as the low pulls offshore. Thunder chcs
will be limited to the evening and mainly across the south and
east. Lows in the upr 40s-mid 50s.

Trailing upr level energy tracks across the eastern shore early sat.

Will keep slght chc morning pops there, otw decreasing cldns. Highs
in the low-mid 60s eastern shore, mid 60s-lwr 70s west of the bay.

Long term /Saturday night through Wednesday/
Weak high pressure returns to the region Sat night/sun with
nw flow aloft. Mostly clear skies and cool temperatures
anticipated with lows in the 40s Sat night and highs in the 60s
sun (upper 50s atlantic beaches). High pressure slides offshore
sun night/mon as the next low pressure system deepens over the
arklatex region/lower mississippi valley. The low continues to
track NE into NRN oh/pa Mon night into tue... Dragging a cold
front through the mid atlantic region Tue aftn/evening. Increasing
cloudiness late Sun night into Mon with similar temps to sun. Lows
in the 40s Sun night, and highs in the 60s Mon (upper 50s atlantic
beaches). Sfc pressure gradient tightens substantially late mon
night into Tue ahead of the approaching cold front. S-w winds
gusting up to 25-30 mph will be possible. Widespread rainfall is
anticipated during this timeframe with very low thunderstorm
chances due to rain occurring primarily in the morning. Warmer
temperatures Mon night/tue as a warm front lifts north through the
region. Lows Mon night in the mid-upper 40s far NRN counties (i.E.

North of the warm front) and in the lower 50s elsewhere. Highs
tue in the 60s far NRN counties and in the lower 70s elsewhere.

Aviation /02z Thursday through Monday/
Vfr conditions prevail over the region as high pressure over
the region moves east overnight. Strong low pressure over the
southern great plains will move northeast into the ohio valley
Thursday allowing mid and high clouds to increase over the mid
atlantic region. Winds will be from the n-ne 5 to 10 kt tonight
and will shift e-se on Thursday 10-15 kt.

Outlook... Low pressure will move from the ohio valley across
northern portions of the mid atlantic states to south of new
england by Saturday morning. Widespread rain develops Friday
morning with a chance for thunderstorms Friday afternoon and
evening. Periods of MVFR/ifr will be likely. Conditions improve
by Saturday morning. High pressure builds back into the area for
the weekend. There will be a chance for showers western
portions of the area by late Monday as the next system develops
over the mississippi valley.

Marine
High pressure continues to build into the region from the north
tonight and slides across the DELMARVA on thu. Breezy nne winds
10-15kt through early evening will diminish around sunset. Although
a diurnal increase in winds is anticipated late tonight into thu
morning, persistent onshore/ne-e winds will remain AOB 15kt through
thu. However, seas could reach up to 5ft out near 20nm in nne swell
and have issued SCA flags for all coastal waters from 500am through
700pm thu; may be able to drop headlines with forecast package late
thu aftn.

High pressure slides offshore Thu night as an approaching low
pressure system tracks over the great lakes states. Winds become
more SE overnight. Speeds still AOB 15kt with seas 3-4ft/waves 2ft.

The sfc pressure gradient tightens on Fri as a warm front lifts north
across the area Fri morning ahead of an approaching cold front, which
is expected to cross the waters Fri evening. Wind speeds are expected
to increase to low-end SCA (15-25kt) Fri morning... Becoming sw-w and
decreasing AOB 15kt Fri evening with the cold frontal passage. Seas
also build to 5ft Fri morning and could reach up to 6ft NRN coastal
waters Fri aftn... Primarily due to onshore swell. Elevated seas around
5ft expected through Fri night... Possibly lasting through Sun for far
nrn coastal waters. Waves on ches bay should average 2-3ft on fri.

Weak high pressure returns to the region sat/sun with northerly winds
aob 15kt Sat and AOB 10kt sun. Seas 3-5ft far NRN coastal waters/2-4ft
srn coastal waters. Waves generally 1-2ft.

Akq watches/warnings/advisories
Md... None.

Nc... None.

Va... None.

Marine... Small craft advisory from 5 am to 7 pm edt Thursday for anz650-
652-654-656-658.

Synopsis... Mpr
near term... Ajz/mpr
short term... Mpr
long term... Bmd
aviation... Jef/lsa
marine... Bmd/tmg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44041 - Jamestown, VA 40 mi35 min E 3.9 G 3.9 49°F 57°F
YRSV2 - Chesapeake Bay,VA 45 mi65 min S 1 49°F 1023 hPa46°F
YKTV2 - 8637689 - Yorktown, VA 56 mi47 min Calm G 1.9 47°F 52°F1021.7 hPa

Wind History for Yorktown USCG Training Center, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, Dinwiddie County Airport, VA2 mi40 minN 010.00 miPartly Cloudy40°F38°F97%1022 hPa
Chesterfield County Airport, VA13 mi40 minN 010.00 miMostly Cloudy0°F0°F%1022.3 hPa
Richmond, Richmond International Airport, VA23 mi41 minN 010.00 miA Few Clouds46°F42°F86%1022.2 hPa

Wind History from PTB (wind in knots)
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Last 24hrN4N5N5N4CalmNE5NE8NE8NE8N7NE5NE7N6NE5NE7NE7CalmCalmE5SE3CalmCalmCalmCalm
1 day agoCalmCalmCalmCalmSW3CalmCalmS3SW6SW7SW6SW6S3CalmSW8W6CalmCalmCalmCalmCalmCalmN3N3
2 days agoCalmCalmS3S3S3S3S4S4S7SW10
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SW10SW9SW7S7S3S3CalmCalmCalmCalmS3CalmCalm

Tide / Current Tables for Petersburg, Appomattox River, James River, Virginia
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Petersburg
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Thu -- 01:13 AM EDT     0.01 feet Low Tide
Thu -- 06:11 AM EDT     3.76 feet High Tide
Thu -- 06:57 AM EDT     Sunrise
Thu -- 08:51 AM EDT     Moonrise
Thu -- 01:59 PM EDT     -0.08 feet Low Tide
Thu -- 06:47 PM EDT     3.35 feet High Tide
Thu -- 07:30 PM EDT     Sunset
Thu -- 10:36 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.200.212.33.33.73.63.12.41.710.50.1-0.10.31.32.53.23.332.41.81.1

Tide / Current Tables for Puddledock Sand
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Puddledock Sand & Gravel
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Thu -- 12:33 AM EDT     -0.23 feet Low Tide
Thu -- 06:21 AM EDT     3.78 feet High Tide
Thu -- 06:57 AM EDT     Sunrise
Thu -- 08:51 AM EDT     Moonrise
Thu -- 01:10 PM EDT     -0.28 feet Low Tide
Thu -- 06:43 PM EDT     3.14 feet High Tide
Thu -- 07:30 PM EDT     Sunset
Thu -- 10:36 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.20.61.82.83.43.73.73.22.41.50.70.1-0.30122.633.12.82.11.30.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Wakefield, VA (2,6,7,8)
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Ground Weather Radar Station Wakefield, VA
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weather_mapweather_map weather_map

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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.