Saturday, October21, 2017 L-36.com


Marine Weather and Tides
Colonial Heights, 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 7:22AMSunset 6:25PM Saturday October 21, 2017 11:45 AM EDT (15:45 UTC) Moonrise 7:57AMMoonset 6:54PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 938 Am Edt Sat Oct 21 2017
Rest of today..N winds 5 kt...becoming E this afternoon. Waves 1 foot.
Tonight..SE winds 5 kt. Waves 1 foot.
Sun..SE winds 5 to 10 kt. Waves 1 foot.
Sun night..S winds 5 to 10 kt. Waves 1 foot.
Mon..SE winds 5 to 10 kt. Waves 1 to 2 ft.
Mon night..S winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
Tue..S winds 15 to 20 kt. Waves 2 to 3 ft. Showers likely.
Tue night..SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to 2 ft. A chance of showers in the evening.
Wed..W winds 10 kt. Waves around 2 ft...subsiding to 1 foot in the afternoon.
ANZ600 938 Am Edt Sat Oct 21 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 remains over the mid atlantic region today and gradually slides off the coast on Sunday. A cold front will approach from the west on Monday, and push through the waters Tuesday and Tuesday night. High pressure will slowly build into the area from the southwest Wednesday and Thursday.

7 Day Forecast for Marine Location Near Colonial Heights, VA
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location: 37.27, -77.37     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 211037
afdakq
area forecast discussion
national weather service wakefield va
637 am edt Sat oct 21 2017

Synopsis
High pressure remains over the mid atlantic region through
the weekend... With temperatures gradually warming. The next
cold front is expected to impact the region Monday night and
Tuesday.

Near term until 6 pm this evening
Sfc hi pres sfc-aloft remains anchored INVOF fa through today.

Other than patchy areas of fg... ESP in interior SE va-ne
nc... Dry-continued skc and seasonably warm wx expected again
today. Winds remaining vrb mainly AOB 5 kt. Highs 75-80f... L70s
right at the coast.

Short term 6 pm this evening through Monday
High pressure slowly shifts off the coast tonight-sun.

Potentially a little better coverage of patchy areas of fg by
late tonight due to light ese winds. Otherwise... Dry-continued
seasonably warm wx. A few more clouds possible by Sun afternoon
due to the low level flow from the SE ahead of the next cold
front (which will be entering the oh-tn valleys late) - so may
become partly sunny vs mostly sunny. Lows tonight in the u40s-l50s
inland to the m-u50s at the coast. Highs Sun ranging through
the 70s.

By mon... Low pres deepens over the deep south lower ms valley
while a strong upper ridge remains in place along just off the
east coast. 00z 21 GFS and ECMWF showing only very subtle timing
differences with respect to how quickly the precip from the
southern low is able to spread east into the mid-atlantic.

Based on 00z 21 suite of models... Keeping pops AOB 20%
throughout the local area. While pops tend to increase late in
the day w... May also be tad higher area of pops near the coast
in SE va-ne nc toward Mon eve. Otherwise... Clouds will be on the
increase (gradually) from w-e mon. Highs again in the m-u70s
(l70s right at the coast)... After morning lows in the 50s-around
60f.

Long term Monday night through Friday
Still a lot of uncertainty as to how next weeks system plays out as
models offer up different timing and moisture field solutions. What
is agreed upon is that a full latitude trof will move across the
region tue, what is yet to be determined is the scope and track of
several S w's embedded in the trof and timing of a cold frontal
passage across the area. GFS slower much wetter as copious amounts
of gom moisture gets transported north ahead of the front. Ecmwf
faster drier with the FROPA with a dry slot cutting the pcpn off.

Decent low level jet and theta-e advection progged ahead of the
front for at least some instability to develop. Went ahead and
bumped up pops to between 70-80% late Mon night through 18z tue
with pcpn tapering off and ending west to east late Tue aftrn
and Tue night as the deepest moisture pushes offshore. Added
moderate rain and slight chc thunder for Tue morning. Later
shifts can adjust as needed. Warm and humid Mon nite with lows
in the 60s. Breezy Tue with highs 70-75. Cooler Tue nite with
lows in the upr 40s west to upr 50s along the coast.

Slight chc pops Wed as upr level energy lingers. Cool with
highs in the low to mid 60s. The upr level low lifts NE thu
allowing high pressure to build across the southeast. Dry thurs
and fri. Highs thurs in the low to mid 60s. Lows in the 40s.

Highs Fri 65-70.

Aviation 12z Saturday through Wednesday
PredominantlyVFR conditions expected through the 12z taf
forecast period as sfc high pres dominates. Another round of
patchy areas of fg expected through early this morning... W
potential for ifr lifr from time to time... ESP phf ecg. Sfc hi
pres shifts off the coast tonight-sun. A little better coverage
of fg possible late tonight early Sun due to light SE winds. A
cold front is forecast into across the local area late Mon night
and Tue W chcs for MVFR to LCL ifr conditions in ra and low
cigs.

Marine
A large area of surface high pressure over the region will allow for
generally benign conditions over the waters through the weekend.

Winds generally are 5 knots or less over all of the coastal waters
this morning. Winds become ene by this afternoon and increase to 5
to 10 knots. Seas are expected to range from 1 foot or less in the
bay and rivers (1 to 2 feet at the mouth of the bay) and 2 to 3 feet
over the coastal waters. Favorable boating conditions continue into
Sunday with with benign seas and ese winds of 5 to 10 knots.

The next chance for significant weather over the waters does not
come until early next week as a strong cold front approaches from
the west on Monday and slowly crosses the waters on Tuesday. The
pressure gradient will lead to increasing southerly flow ahead of
the front later Monday into Tuesday, shifting to the wnw behind the
front Tuesday night into Wednesday. Small craft advisories will
likely be needed for most or all of the area Mon night Tue as the
pressure gradient should be strong enough for winds of 15-25 kt with
higher gusts. Coastal seas build to 6-9 ft with waves of 3-5 ft in
the bay likely. A fair amount of uncertainty remains Tue night wed
regarding how strong the pressure gradient will be as the models
tend to keep the cold air and strong winds off to our NW over the
great lakes until thu.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Alb jdm
near term... Alb
short term... Alb jdm
long term... Mpr
aviation... Alb mpr
marine... Ajb lkb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44041 - Jamestown, VA 31 mi35 min WNW 1.9 G 3.9
YRSV2 - Chesapeake Bay,VA 36 mi75 min N 1 63°F 1029 hPa58°F
YKTV2 - 8637689 - Yorktown, VA 47 mi45 min W 1 G 1.9 65°F 69°F1027.6 hPa (+1.2)

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, VA10 mi70 minNE 310.00 miFair65°F55°F71%1028.1 hPa
Richmond, Richmond International Airport, VA17 mi51 minN 010.00 miA Few Clouds69°F52°F55%1028.2 hPa

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Last 24hrN8N5N5N4CalmNW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoSW3SW8W9SW6W6SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3N4
2 days agoN3N4CalmE4SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3S6

Tide / Current Tables for Puddledock Sand
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Puddledock Sand & Gravel
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Sat -- 05:26 AM EDT     3.04 feet High Tide
Sat -- 07:23 AM EDT     Sunrise
Sat -- 08:56 AM EDT     Moonrise
Sat -- 11:47 AM EDT     0.28 feet Low Tide
Sat -- 05:42 PM EDT     3.60 feet High Tide
Sat -- 06:24 PM EDT     Sunset
Sat -- 07:54 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.91.72.22.7332.62.11.40.90.50.30.81.82.63.13.53.63.32.721.30.7

Tide / Current Tables for City Point (Hopewell), James River, Virginia
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City Point (Hopewell)
Click for Map
Sat -- 05:13 AM EDT     2.92 feet High Tide
Sat -- 07:23 AM EDT     Sunrise
Sat -- 08:56 AM EDT     Moonrise
Sat -- 11:34 AM EDT     0.13 feet Low Tide
Sat -- 05:26 PM EDT     3.17 feet High Tide
Sat -- 06:23 PM EDT     Sunset
Sat -- 07:53 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.61.42.12.72.92.82.21.610.50.20.20.61.42.22.83.13.12.621.40.90.5

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 (11,2,3,4)
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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.