Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Hopewell, 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 7:31PM Thursday March 30, 2017 6:39 AM EDT (10:39 UTC) Moonrise 7:51AMMoonset 9:36PM Illumination 9% 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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ANZ636 York River- 344 Am Edt Thu Mar 30 2017
Through 7 am..NE winds 5 to 10 kt. Waves 1 foot.
Today..E winds 5 to 10 kt. Waves 1 to 2 ft.
Tonight..SE winds 10 kt. Waves 1 to 2 ft. Showers likely late.
Fri..S winds 10 to 15 kt. Waves 1 to 2 ft. Showers until late afternoon...then showers with a chance of tstms late.
Fri night..SW winds 10 to 15 kt...becoming W 5 to 10 kt after midnight. Waves 1 to 2 ft. Showers likely with a chance of tstms in the evening...then a chance of showers after midnight.
Sat..NW winds 5 to 10 kt. Waves 1 foot.
Sat night..N winds 5 to 10 kt...diminishing to 5 kt after midnight. 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 foot. Winds and waves higher and visibilities lower in and near tstms.
ANZ600 344 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 slowly pushes offshore later today and tonight. Low pressure and an associated cold front will approach from the west on Friday...moving across the area Friday night. High pressure then returns for the upcoming weekend.

7 Day Forecast for Marine Location Near Hopewell, VA
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location: 37.31, -77.27     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 300810
afdakq
area forecast discussion
national weather service wakefield va
410 am edt Thu mar 30 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 /through tonight/
Latest upper air analysis reveals a potent low pushing across
the central plains toward the middle mississippi river valley.

Closer to home, downstream shortwave ridging has pushed east
across the mid-atlantic into the southeast this morning. At the
surface, latest analysis shows ~1034mb high pressure centered
over james bay, ridging south into the eastern great lakes and
the interior northeast. Resultant light ene has allowed some sct
low stratus to develop over the coastal plain this morning, with
some more widespread mid level cloudiness across the piedmont.

Temperatures this morning a bit chillier than the past few with
temps mainly in the lower and middle 40s at 07z, with some upper
40s to near 50 hanging on with lighter flow and increasing cloud
cover across the piedmont.

Overall, relatively quiet weather-wise today. Upper ridge slides
overhead today before pushing offshore tonight. Good model
agreement with respect to increasing/lowering clouds through the
day... First across the piedmont, then eventually spreading east
to the coast by afternoon. Kept pops out of the forecast, but
some patchy drizzle possible far west this afternoon. Otherwise,
mostly cloudy to overcast inland, increasing clouds after a
partly sunny start at the coast. Given weak/low mixing and the
cloud coverage, generally accepted the cooler met numbers, and
accordingly took the forecasted maxima down a few degrees. Look
for a cooler day with highs in the middle to upper 50s north... 55-60
se va and interior NE nc away from the immediate coast... 50-55
at the beaches.

Overrunning moisture pushes across the area late this evening
and overnight ahead of approaching upr level low. Will keep the
evening dry for most with light rain showers overspreading the
area by midnight far west... And after midnight east of i-95
midnight. Pops range from chc along the coast to likely across
the piedmont. Lows in the low- mid 40s.

Short term /Friday through Saturday/
Models remain in good agreement with handling of the upper level
low, which takes on a negative tilt as it lifts ene across the
oh valley on Friday. While the main low remains north of the
local area, NAM and to a lesser extent the ECMWF key into weak
meso low formation along the attendant frontal zone Friday
afternoon, with the triple point feature lifting e-ne across the
area Friday afternoon. This would present two distinct periods
of rainfall; the first a strongly forced, quick moving line of
showers producing rain Friday morning into early afternoon, with
a second line of convection possible for the mid-late afternoon
as the upper low and attendant surface cold front push across.

Pw's in the 1.25 to 1.50 inches and strong lift argue for rain
to fall heavily at times Friday morning. However, showers should
push through relatively quickly. Regarding the afternoon threat,
spc has now put the entire akq CWA in a marginal risk. Best
thunder chcs remain confined mainly across the southern half of
the area, with a slight chc across the north, where appreciable
clearing and destabilization is least likely. Strong deep layer
shear values would argue for at least a loosely organized
convective line with any t-storms that do fire, and reasonably
steep mid level lapse rates, lis <-4 deg c and CAPE maximized
across south central va and points south all argue for a narrow
window for strong to severe storms Friday afternoon across the
central/southern cwa, with the severe threat conditional upon
breaks in the overcast and resultant destabilization. In that
event, marginally severe hail, and damaging winds are the
primary hazards in any thunderstorms. Highs mainly in the 60s
to near 70 across the south, again dependant upon degree of
clearing after morning into midday rainfall.

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 with forcing and instability
waning quickly after sunset Fri night. Lows in the upr 40s-mid
50s.

Trailing upr level energy tracks across the eastern shore with
any showers tapering off before sunrise. Look for decreasing
clouds w/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 /08z Thursday through Monday/
Vfr conditions prevail over the region early this morning as
high pressure builds over the region. Strong low pressure over
the southern great plains will move northeast into the ohio
valley later Thursday, resulting in increasing mid to high
clouds over the mid atlantic region. While ceilings should
remain inVFR to high end MVFR range today, good model agreement
exists that ceilings will gradually lower through the day from
west to east with warm air advection atop cool onshore flow at
the surface. Mostly cloudy to overcast conditions (ceiling in
the 5 to 7 kft range agl) expected through the day at ric,
reaching SE terminals at korf/kecg by mid to late morning.

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 late
tonight into Friday morning with a chance for thunderstorms
Friday afternoon and evening. Periods of MVFR/ifr will be
likely with visibility restrictions possible by Friday morning
and afternoon. Conditions improve quickly Saturday morning with
high pressure rebuilding back over 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
Latest sfc analysis shows high pres stretching down through the
mid atlc with a stalled frontal bndry over the SE states. Will
maintain the SCA over coastal wtrs today for seas up to 5 ft out
20 nm. Mainly 10-15 kt ne/e flow today, with the high sliding
offshore tonight and winds subsequently increasing late tonight
and especially into Fri as the next low pres systm and
associated cold front approach from the west. Marginal sca
conditions are psbl over the bay and more likely over the cstl
wtrs Fri with seas up to 6-7 ft, but will hold off on any
headlines for now with this being third period and some
headlines already in effect for today. The front crosses the
waters late Fri night/sat morning, with sub-sca winds expected
behind the front. Hi pres then builds in over the weekend.

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

Nc... None.

Va... None.

Marine... Small craft advisory until 7 pm edt this evening for anz650-
652-654-656-658.

Synopsis... Mam
near term... Ajz/mam
short term... Mpr/mam
long term... Bmd
aviation... Mam/jef
marine... Bmd/mas


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44041 - Jamestown, VA 27 mi40 min N 1.9 G 3.9 46°F 57°F
YRSV2 - Chesapeake Bay,VA 30 mi70 min W 1 42°F 1023 hPa41°F
YKTV2 - 8637689 - Yorktown, VA 42 mi52 min NE 5.1 G 6 49°F 52°F1021.5 hPa
YKRV2 - 8637611 - York River East Rear Range Light, VA 49 mi52 min ENE 16 G 18 50°F 1021.1 hPa

Wind History for Yorktown USCG Training Center, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Richmond, Richmond International Airport, VA14 mi46 minNNE 410.00 miMostly Cloudy46°F44°F93%1022.9 hPa
Chesterfield County Airport, VA15 mi45 minN 010.00 miOvercast0°F0°F%1022.7 hPa
Petersburg, Dinwiddie County Airport, VA16 mi45 minN 010.00 miOvercast44°F42°F97%1022 hPa

Wind History from RIC (wind in knots)
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Last 24hrN3NE6NE8N11NE10N9N7N8
G16
5NW956NE7E4SE10E6CalmCalmE3CalmCalmNE3N3N4
1 day agoS7SW6SW6S6S8SW9SW8W94SW8S6S7SW3CalmCalmNW3NW3NW5N9N10N11N8N7N4
2 days agoS6S7SW10S12SW10SW15SW14
G19
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S8SW13S8S10S7S8S7S7S9S10S7S10S10S9

Tide / Current Tables for City Point (Hopewell), James River, Virginia
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City Point (Hopewell)
Click for Map
Thu -- 12:01 AM EDT     0.01 feet Low Tide
Thu -- 05:41 AM EDT     3.40 feet High Tide
Thu -- 06:57 AM EDT     Sunrise
Thu -- 08:51 AM EDT     Moonrise
Thu -- 12:47 PM EDT     -0.07 feet Low Tide
Thu -- 06:17 PM EDT     3.03 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
00.20.91.92.83.33.432.31.610.40.1-0.10.31.122.732.92.41.71.10.5

Tide / Current Tables for Puddledock Sand
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Puddledock Sand & Gravel
Click for Map
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 (6,6,7,8)
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Ground Weather Radar Station Wakefield, VA
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weather_mapweather_map weather_map

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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.