Friday, July28, 2017 L-36.com


Marine Weather and Tides
Richmond, 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 6:10AMSunset 8:22PM Friday July 28, 2017 9:05 AM EDT (13:05 UTC) Moonrise 10:42AMMoonset 10:48PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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
ANZ636 York River- 654 Am Edt Fri Jul 28 2017
Today..SW winds 5 to 10 kt. Waves 1 foot. Isolated showers early this morning. Scattered showers with isolated tstms late this morning, then showers and tstms this afternoon.
Tonight..SW winds 5 to 10 kt. Waves 1 foot. Showers, tstms.
Sat..NW winds 5 to 10 kt...becoming N 15 to 20 kt. Waves 1 to 2 ft...building to 2 to 3 ft late. Showers with tstms likely in the morning, then showers with a chance of tstms in the afternoon. Vsby 1 to 3 nm in the morning.
Sat night..N winds 20 kt. Waves 2 to 3 ft. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight.
Sun..NE winds 15 to 20 kt. Waves 2 to 3 ft... Subsiding to 1 to 2 ft in the afternoon.
Sun night..NE winds 10 to 15 kt. Waves 1 to 2 ft.
Mon..NE winds 10 to 15 kt. Waves around 2 ft... Subsiding to 1 foot in the afternoon. A chance of showers.
Mon night..N winds 5 to 10 kt. Waves 1 foot. A chance of showers in the evening.
Tue..N winds 5 kt. Waves 1 foot.
Tue night..SE winds 5 kt...becoming sw after midnight. Waves 1 foot. Winds and waves higher and visibilities lower in and near tstms.
ANZ600 654 Am Edt Fri Jul 28 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.. A cold front approaches from the northwest today, and slowly pushes across the waters on Saturday. An area of low pressure moves along the front and slides off the coast Sunday into Monday. High pressure slowly builds in from the west Monday afternoon through the mid week period.

7 Day Forecast for Marine Location Near Richmond, VA
   Hourly   EDIT   Help
location: 37.54, -77.43     debug


Area Discussion for - Wakefield, VA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kakq 281115
afdakq
area forecast discussion
national weather service wakefield va
715 am edt Fri jul 28 2017

Synopsis
Low pressure affects the region today through Saturday... With a
cold front slowly pushing across the region tonight into
Saturday morning. The front pushes southeast of the area by
Sunday with an upper low sitting overhead through at least
Monday night.

Near term through tonight
Lee trough tightens and develops into a meso-low late in the day
as a cold front drops down from the nnw. Ongoing convection
early this morning should primarily move offshore shortly after
sunrise with pockets of showers lingering through mid morning.

After which, daytime heating within the warm sector ahead of the
front will destabilize the atmosphere and allow more storms to
develop this aftn; initially where shortwave energy interacts
with the lee trough and then as conditions become more unstable.

Meanwhile, an open trough over the upper great lakes will dig
into the ohio valley today and help to slowly push the cold
front across the area from late this aftn through tonight.

Widespread thunderstorms should be anticipated tonight. Slow
movement of the front, weak sfc-upper level winds, small mbe
vectors, and pwats increasing from roughly 1.50 inches to around
2.00 inches (or 150-175 percent of normal) by this evening, all
indicate that heavy rainfall will impact the region.

Additionally as the upper low interacts with the sfc meso-low, a
deformation zone will develop and enhance rainfall rates in an
already moisture- laden atmosphere... Primarily across the
maryland lower eastern shore, northern neck, middle peninsula,
and accomack county in va. Have really ramped up 6hr QPF amounts
in these areas (00z model guidance in better agreement) and
expanded the flash flood watch to include the aforementioned va
areas. While there is still some uncertainty about how far south
the deformation axis will set up, the general trend keeps the
best area for enhancement across the north. Storm total qpf
amounts from today through 18z Sat range from 2.00 to almost
3.50 inches within flash flood watch area. Convective processes
will be capable of pushing these amounts higher locally under
stronger, slow-moving storm cores. SPC now has the mid atlantic
region within a marginal risk for severe storms today tonight.

As such, any thunderstorms that develop in this timeframe will
be capable of producing very heavy rainfall, locally strong wind
gusts, frequent lightning, and localized flooding.

Short term Saturday through Sunday night
The cold front is expected to stall over far SE va NE nc on
Saturday before shifting southeast of the area late Saturday
night. Overall, sfc high pressure builds across the midwest as
the upper low opening trough sits over the mid atlantic coast
through at least Monday night before shifting ewd and away from
the coast. Showers storms will be focused along the coast with
more widely scattered storms possible farther inland due to
elevated lift present with the upper low. Precip chances
expected to wane late Saturday night into Sunday as the front
gets shunted farther se. Once again, primary threats from any
thunderstorms Sat sat night will be moderate to heavy rainfall,
locally strong wind gusts, and frequent lightning.

Widespread precipitation, cloud cover, and cooler canadian air
with the upper trough will keep temperatures 5-10 degrees below
normal Saturday. Highs Sat in the mid-upper 70s NW to
lower 80s se. Low temperatures cool off nicely with lows each
night in the lower 60s NW to mid-upper 60s se.

Long term Monday through Thursday
Low confidence forecast early next week as the models continue to
offer up different solutions on just how slow and far off the coast
the cut off low tracks. Rather breezy over eastern sections with
continued marine issues early next week. Otw, high pressure over
the mts keeps the rest of the fa dry. Highs Mon in the upr 70s-
lwr 80s except mid 70s at the beaches. Lows in the 60s to near
70 sern beach areas.

High pressure builds across the region for the mid week period.

Highs Tue in the mid-upr 80s except upr 70s at the beaches. Lows
in the mid 60s-lwr 70s. Highs Wed Thu 85-90. Moisture returns
from the west Thu afternoon. Added slight chc diurnal pops to
the piedmont.

Aviation 11z Friday through Tuesday
A lee trough tightens and develops into a meso-low late in the
day as a cold front drops down from the nnw. Ongoing convection
early this morning should primarily move offshore shortly after
sunrise with pockets of showers lingering through mid morning.

After which, scattered storms will develop this aftn and become
more widespread tonight as the cold front slowly tracks across
the area. Storm movement will be slow, therefore the main
impacts to airfield operations today will be very heavy
rainfall, locally strong wind gusts, frequent lightning,
localized flooding (best potential at ksby), and ifr CIGS vis
(brief periods of lifr possible under stronger storm cores).

The cold front is expected to stall over far SE va NE nc on
Saturday before shifting southeast of the area late Saturday
night. Overall, sfc high pressure builds across the midwest as
an upper low sits over the mid atlantic coast through at least
Monday night before shifting ewd and away from the coast.

Showers storms will be focused along the coast with more widely
scattered storms possible farther inland due to elevated lift
present with the upper low. Precip chances expected to wane late
Saturday night into Sunday as the front gets shunted farther se.

Once again, primary threats from any thunderstorms Sat sat night
will be moderate to heavy rainfall, locally strong wind gusts,
and frequent lightning. With rainfall intensity waning, any
brief cig vis reductions will likely be MVFR.

Marine
Relatively quiet in the near term for the marine area, some
enhancement of the winds with showers tstms with brief gusts to
20-25 kt, but outside of any convection winds are mainly 15 kt
or less. Similar conditions through today into this evening
with S SW winds mainly 10-15 kt outside of convection, slowly
shifting to the W NW late tonight early sat. Seas avg 2-4 ft and
bay waves up to 2 ft.

The main story continues to be a strong cold frontal passage
sat Sat night (by mid summer standards). Latest nam GFS ecwmf gem
have now trended much closer with respect to timing and the
overall position of the primary features, lending to increasing
confidence in the marine forecast. At least SCA headlines will
be needed, but given that it will be a late 3rd 4th period (and
beyond) event, its too early to issue any SCA headlines with the
morning package. Did issue a gale watch for coastal waters N of
cape charles for late Sat sat night given an area of 850 mb
u-anomaly (easterly) winds of 4 std dev from nj to the delmarva.

If it does occur this would be of the marginal gale variety
(i.E. Sustained winds 25-30 kt with gusts to 35 kt). In any
event, a decent surged noted to develop by Sat aftn from N to s
across the waters as sfc low deepens along just off the delmarva
coast, followed by strong caa, especially Sat night. Seas build
to 7-10 ft for coastal waters by Sat night sun, with 4-5 ft
waves for the bay.

Conditions slowly improve Sun night Monday, but ongoing sca's
will persist due to lingering NE swell will likely result in
marine issues through at least late Mon or tue.

Tides coastal flooding
Water levels have slowly diminished with no additional
statements needed. However, at least minor flooding may be
possible Sunday Mon along the coast and in the lower bay with
the strong N NE flow behind the departing sfc low and associated
cold front.

Akq watches warnings advisories
Md... Flash flood watch from 2 pm edt this afternoon through
Saturday afternoon for mdz021>025.

Nc... None.

Va... Flash flood watch from 2 pm edt this afternoon through
Saturday afternoon for vaz064-075>078-084>086-099-517>522.

Marine... Gale watch from Saturday afternoon through late Saturday night
for anz650-652-654.

Synopsis... Bmd
near term... Bmd
short term... Bmd
long term... Mpr
aviation... Bmd
marine... Lkb
tides coastal flooding... Akq


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
YRSV2 - Chesapeake Bay,VA 39 mi96 min Calm 76°F 1011 hPa72°F
YKTV2 - 8637689 - Yorktown, VA 55 mi48 min SW 5.1 G 6 76°F 82°F1010.2 hPa

Wind History for Yorktown USCG Training Center, VA
(wind in knots)    EDIT      (on/off)   Help
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
24hr
SW9
G12
SW10
SW8
G12
SW8
G12
SW7
G10
SW7
G13
SW7
G11
SW10
G14
SW10
G15
SW12
G17
SW7
G11
S7
G10
S6
G10
SW6
SW8
G11
SW5
SW10
G13
SW7
SW9
G14
SW3
SW6
SW4
SW5
SW4
G7
1 day
ago
SE6
E8
E9
E11
E9
E10
G13
E11
SE12
E12
SE11
SE12
G15
SE11
G15
SE8
G13
SE8
S7
SE6
SE7
S4
S4
S4
S4
S4
S4
SW4
2 days
ago
N11
G14
N7
G12
N7
G11
NW9
G12
NW10
NW7
NW12
N7
N10
G13
N12
G16
NE14
NE11
NE7
NE7
SE6
G9
SE6
SE7
G11
E9
E11
E7
G10
SE7
G10
SE6
S4
S4
G7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Richmond, Richmond International Airport, VA7 mi72 minW 510.00 miPartly Cloudy77°F71°F82%1010.6 hPa
Ashland, Hanover County Municipal Airport, VA11 mi72 minno data9.00 miFair76°F69°F79%1010.5 hPa
Chesterfield County Airport, VA11 mi70 minWSW 710.00 miMostly Cloudy77°F72°F85%1012.2 hPa

Wind History from RIC (wind in knots)
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
9
AM
Last 24hrS10SW12SW11SW10S14W14SW11W12W9W8SW8W8W5SW8W10SW7SW3S5SW7SW6W4W3W5Calm
1 day agoSW3SW34CalmCalmCalmNE6CalmE5NE9E7E9SE8SE8SE8SE9S6S5S4S7S6S5S6S13
2 days agoN11N8N9N76
G16
N8N10
G17
NW9N9N10NE10E4N8N5N3N6N6N6NE5N5N3CalmN4Calm

Tide / Current Tables for Richmond (river locks), James River, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Richmond (river locks)
Click for Map
Fri -- 04:05 AM EDT     0.30 feet Low Tide
Fri -- 06:10 AM EDT     Sunrise
Fri -- 09:07 AM EDT     3.64 feet High Tide
Fri -- 11:42 AM EDT     Moonrise
Fri -- 04:24 PM EDT     0.18 feet Low Tide
Fri -- 08:21 PM EDT     Sunset
Fri -- 09:39 PM EDT     3.70 feet High Tide
Fri -- 11:48 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.21.510.50.30.61.52.63.33.63.52.92.31.610.50.20.31.12.23.13.63.73.3

Tide / Current Tables for Richmond Deepwater Terminal, James River, Virginia
   EDIT      (on/off)   Help   One Week of Data
Richmond Deepwater Terminal
Click for Map
Fri -- 03:30 AM EDT     0.27 feet Low Tide
Fri -- 06:10 AM EDT     Sunrise
Fri -- 08:39 AM EDT     3.83 feet High Tide
Fri -- 11:42 AM EDT     Moonrise
Fri -- 03:48 PM EDT     0.14 feet Low Tide
Fri -- 08:21 PM EDT     Sunset
Fri -- 09:10 PM EDT     3.89 feet High Tide
Fri -- 11:48 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.20.70.30.41.12.23.23.73.83.42.721.30.70.30.20.61.72.83.63.93.73.2

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 Wakefield, VA (9,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Wakefield, 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.