Monday, April24, 2017 L-36.com


Marine Weather and Tides
Gloucester Courthouse, 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 6:16AMSunset 7:50PM Monday April 24, 2017 9:22 AM EDT (13:22 UTC) Moonrise 4:22AMMoonset 4:51PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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ANZ632 Chesapeake Bay From New Point Comfort To Little Creek Va- 446 Am Edt Mon Apr 24 2017
.small craft advisory in effect through late tonight...
.gale warning in effect from late tonight through Tuesday morning...
Through 7 am..NE winds 20 kt. Waves 4 to 5 ft. Rain likely.
Today..NE winds 20 to 25 kt. Waves 4 to 5 ft. Rain.
Tonight..E winds 20 to 25 kt. Waves 5 to 6 ft. Rain until early morning. A slight chance of tstms after midnight. Showers late.
Tue..E winds 25 to 30 kt with gusts to around 35 kt... Becoming se 10 to 15 kt. Waves 4 to 5 ft. Showers.
Tue night..E winds 5 to 10 kt...becoming nw late. Waves 1 to 2 ft. Showers likely in the evening...then a chance of showers after midnight.
Wed..NW winds 5 to 10 kt...becoming sw late. Waves 1 foot.
Wed night..S winds 5 to 10 kt. Waves 1 foot.
Thu..S winds 5 to 10 kt...increasing to 10 to 15 kt in the afternoon. Waves 1 to 2 ft.
Thu night..S winds 10 to 15 kt. Waves 1 to 2 ft.
Fri..S winds 10 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ600 446 Am Edt Mon Apr 24 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.. Low pressure develops over the southeast states tonight...sliding up the coast Monday through midweek. A cold front stalls near the waters early next weekend.

7 Day Forecast for Marine Location Near Gloucester Courthouse, VA
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location: 37.35, -76.63     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 241001
afdakq
area forecast discussion
national weather service wakefield va
601 am edt Mon apr 24 2017

Synopsis
Low pressure will linger off the southeast coast through Tuesday,
then slowly lift northeast off the mid atlantic coast Wednesday.

High pressure builds into the area for the second half of the week.

Near term /until 6 pm this evening/
Latest weather analysis reveals 1020+mb surface high pressure in
place from the northeast coast to just off of the coast of se
new england. To the south, surface low pressure continues to
lift across SE ga toward far S sc... With the frontal boundary
extending e-ne along the sc coast and offshore. Aloft, objective
analysis shows the deepening mid/upper level low pushing across
the lower ms river valley toward the deep south.

Low level wedge is still well established over the fa early this
morning... W/ moisture transport N providing cool/cloudy wx w/
ongoing periods rain. Lingering light rain and drizzle persists
early on this morning, before a more widespread, steadier
rainfall takes hold later this morning and this afternoon as
better overrunning moisture pushes into the area, as upper low
reaches the SE coast and begins to take on a neg tilt.

Continued mainly likely to categorical pop continues w/periods
of rain. Highs mid to upper 50s in the piedmont to around 70
along the SE coast. QPF 1/4" to 1/2", highest out in the
piedmont.

Short term /6 pm this evening through Wednesday/
No major changes in forecast rationale this morning. The
primary forecast concern with this system comes tonight and
Tuesday when the tropical moisture off the florida coast gets
entrained then rotates nnw around the vertically stacked system
as it slowly lifts north along the mid-atlantic coast. SPC wrf
shows area of heavier showers and t-storms lifting NE from the
coastal front, reaching our area overnight. Therefore, do
continue to expect the pcpn type to go back to more of a
convective one, at least along the coast. Lows tonight/early
Tuesday from near 50 NW to the lwr 60s se. A bit more humid
Tuesday with highs in the low-mid 60s NW to low- mid 70s se.

Pcpn tapers off west to east Tuesday night/early Wed with lows
in the 50s. Decreasing cloudiness and warmer wed. Highs in the
upper 60s to lower 70s NE zones... Middle to upper 70s inland.

Long term /Wednesday night through Sunday/
Long term period will feature above normal temps with mainly dry wx.

For Wed night/thu, deep swly flow develops across the eastern
seaboard as the aforementioned low pushes off to the ne. An upper-
level ridge then builds in through the weekend allowing for warm
temps and dry wx as most of the energy aloft will stay N and W of
the local area. At most a 20% chance of a late day shra/tstm Fri and
sat. High temps Thu through Sun in the 80s, pushing upper 80s on
sat. Low temps in the 60s.

Aviation /09z Monday through Friday/
As of 08z... Weak high pressure was south of new england and a
complex area of low pressure was over georgia and SRN sc. The
area of low pressure will slowly spread into the carolinas
this morning.

Dry air that is a result of the high to the north was keeping sby
mainly dry andVFR early this morning. In the mean time... Areas
of light rain were moving through the rest of the TAF sites
with periodic MVFR conditions. Expect rain to become more
widespread later this morning/aftn with ifr ceilings increasing
in coverage from south to north after 12-14z. Winds will
continue from the northeast and will be gusty at times (15-23
kts) especially near the coast.

Outlook... Low pressure will strengthen near the carolina coast
tonight and Tuesday spreading heavier rain and more consistent
ifr conditions to the area. Winds will be mainly from the east
and will be gusty over eastern portions. As low pressure moves
up the coast rain and degraded aviation conditions will begin to
diminish by early Wednesday. Dry weather is in store Thursday
and Friday as high pressure builds over the southeast states.

Marine
Latest surface analysis depicts high pressure off the northeast
coast and low pressure over the southeast. The result is ongoing
northeast flow over the local waters. Have seen an uptick in speeds
early this morning as pressure falls and increasing low level winds
spread over the waters. Gusts to around 30 knots observed in the
southern coastal waters and lower chesapeake bay. Seas average 4-6
feet and waves 2-4 feet. Low pressure slide off the southeast coast
today as high pressure slides farther offshore. Sustained winds
average 20-25 knots with gusts to around 30 knots over the bay and
coastal waters north of CAPE charles light. Gradient winds diminish
over the southern waters and sound later this morning, with sca
headlines dropping off for the sound. Rivers average 15-20 knots.

Seas build to 5-8 feet in the northern coastal waters this
afternoon and subside to 4-6 feet in the southern coastal waters.

Waves average 3-5 feet. Low pressure lifts over the eastern
carolinas tonight. Anomalous easterly low level flow spreads over
the waters late tonight ahead of the advancing surface low. Pressure
falls of 3-6mb in 6 hours will help mix some of the higher velocity
winds aloft (925mb winds of 45-55 knots) to the water. As a result,
have issued gale headlines for the lower bay and coastal waters late
tonight into Tuesday morning for gusts of 35 to 40 knots. Have also
added the lower james to gale headlines for a 3-6 hour period of
gale gusts to around 35 knots. As the strong easterly winds
overspread the waters, seas will build quickly to 7-10 feet. High
surf advisories have been issued for all coastal areas. Low pressure
lifts over the waters Tuesday afternoon, with improving conditions
over the southern coastal waters and lower bay. Seas slowly subside
to 5-9 feet (highest north). Low pressure centers over the waters
Tuesday night as winds diminish at or below 15 knots. However, seas
will be slow to subside as the low lifts north of the waters through
Wednesday. Still anticipate 4-7 foot seas Wednesday afternoon. Waves
1-2 feet.

Sub-sca conditions expected all waters Thursday as the low
weakens north of the waters. The next front approaches the waters
Friday, stalling over the northern waters Friday night.

Tides/coastal flooding
Current tidal departures are averaging around 1 to 1.5 feet in
the lower bay and southern coastal waters due to ongoing onshore
flow. Have issued another round of coastal flood statements for
this mornings high tide across the lower bay and lower james
river. Levels are expected to fall below minor flooding
thresholds. Tidal anomalies increase to 1.5 to 2 feet through
tonight as northeast flow increases. Water levels are expected
to stay below minor flooding thresholds again this evening into
early tonight. Increasing easterly flow ahead of low pressure
lifting over the carolinas tonight will result push tidal
departures toward 2 feet late tonight/early Tuesday morning. The
elevated departures will coincide with high tide across the
lower bay and coastal areas. Minor/nuisance flooding is
expected. Depending on the exact track of the low, high end
minor to low end moderate coastal flooding is possible Tuesday
night. Departures subside Wednesday as low pressure lifts along
the northeast coast and flow becomes offshore.

Akq watches/warnings/advisories
Md... High surf advisory from 6 am to 4 pm edt Tuesday for mdz025.

Nc... High surf advisory from 4 am to 10 am edt Tuesday for ncz102.

Va... High surf advisory from 6 am to 4 pm edt Tuesday for vaz099-
100.

High surf advisory from 4 am to 10 am edt Tuesday for vaz098.

Marine... Small craft advisory until 1 pm edt Tuesday for anz635>637.

Small craft advisory until 4 am edt Tuesday for anz632-634-638-
650-652-654-656-658.

Gale warning from 4 am to 10 am edt Tuesday for anz632-634-638-
656-658.

Small craft advisory until 7 am edt this morning for anz633.

Small craft advisory until 6 pm edt Tuesday for anz630-631.

Gale warning from 4 am to 1 pm edt Tuesday for anz650-652-654.

Synopsis... Mam
near term... Mam
short term... Mam
long term... Mas
aviation... Mam/lsa
marine... Sam
tides/coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YRSV2 - Chesapeake Bay,VA 6 mi52 min NNE 2.9 55°F 1016 hPa54°F
YKTV2 - 8637689 - Yorktown, VA 12 mi52 min NE 11 G 12 56°F 63°F1014.6 hPa
44041 - Jamestown, VA 13 mi42 min E 3.9 G 7.8 55°F
YKRV2 - 8637611 - York River East Rear Range Light, VA 17 mi52 min ENE 22 G 25 57°F 1013.7 hPa
44072 22 mi42 min ENE 18 G 21 57°F
44058 - Stingray Point, VA 25 mi42 min ENE 18 G 21 56°F 1016.3 hPa
DOMV2 - 8638511 - Dominion Terminal Association, VA 29 mi52 min NE 11 G 17 57°F 1014.2 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 31 mi52 min NE 15 G 17 58°F 1015.5 hPa
SWPV2 - 8638610 - Sewells Point, VA 32 mi52 min 63°F1014.3 hPa
CRYV2 - 8638595 - South Craney Island, VA 35 mi52 min NE 16 G 20 58°F 1013.6 hPa
RPLV2 - 8632837 - Rappahannock Light, VA 35 mi52 min NE 18 G 20 1015.8 hPa
KPTV2 - 8632200 - Kiptopeke, VA 36 mi52 min ENE 11 G 19 60°F
44064 38 mi42 min 21 G 25 57°F 1013.8 hPa
CBBV2 - 8638863 - Chesapeake Bay Bridge Tunnel, VA 38 mi52 min ENE 27 G 30 57°F 60°F1013.1 hPa
MNPV2 - 8639348 - Money Point, VA 43 mi52 min NE 4.1 G 7 58°F 63°F1014 hPa
CHYV2 - 8638999 - Cape Henry, VA 44 mi52 min NE 21 G 25 56°F
LWTV2 - 8635750 - Lewisetta, VA 45 mi52 min NE 8 G 13 53°F 62°F1016.9 hPa
44096 49 mi61 min 56°F5 ft

Wind History for Yorktown USCG Training Center, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Williamsburg-Jamestown Airport, VA9 mi27 minN 010.00 mi55°F55°F100%1015.2 hPa
West Point, Middle Peninsula Regional Airport, VA14 mi27 minNE 67.00 miOvercast53°F52°F97%1016.3 hPa
Fort Eustis / Felker, VA15 mi84 minNE 1210.00 miLight Drizzle55°F53°F92%1014.2 hPa
Newport News, Newport News / Williamsburg International Airport, VA16 mi28 minNE 107.00 miOvercast56°F55°F97%1014.7 hPa
Langley Air Force Base, VA23 mi24 minNE 116.00 miOvercast57°F56°F99%1015.2 hPa

Wind History from JGG (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE4CalmNE6
1 day agoCalmCalmCalmCalmCalmN5NE8CalmCalmCalmCalmCalmN3CalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalm
2 days agoW9
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CalmCalmCalmCalmCalmN4
G16
CalmCalmCalmCalmCalmSW3CalmCalmCalmCalmCalm

Tide / Current Tables for Clay Bank, York River, Virginia
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Clay Bank
Click for Map
Mon -- 02:48 AM EDT     -0.02 feet Low Tide
Mon -- 05:22 AM EDT     Moonrise
Mon -- 06:19 AM EDT     Sunrise
Mon -- 08:55 AM EDT     3.15 feet High Tide
Mon -- 03:04 PM EDT     -0.07 feet Low Tide
Mon -- 05:51 PM EDT     Moonset
Mon -- 07:50 PM EDT     Sunset
Mon -- 09:18 PM EDT     3.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.60.1-00.30.91.72.433.12.92.31.60.80.2-0.10.10.71.52.43.13.53.42.9

Tide / Current Tables for Roane Point, York River, Virginia
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Roane Point
Click for Map
Mon -- 03:43 AM EDT     -0.03 feet Low Tide
Mon -- 05:22 AM EDT     Moonrise
Mon -- 06:19 AM EDT     Sunrise
Mon -- 09:48 AM EDT     3.04 feet High Tide
Mon -- 03:59 PM EDT     -0.13 feet Low Tide
Mon -- 05:51 PM EDT     Moonset
Mon -- 07:50 PM EDT     Sunset
Mon -- 10:08 PM EDT     3.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.20.50.1-00.30.91.72.42.932.82.21.40.60.1-0.10.10.71.62.53.13.43.2

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 (9,2,3,4)
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Ground Weather Radar Station Wakefield, VA
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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.