Tuesday, June27, 2017 L-36.com


Marine Weather and Tides
Portsmouth, 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 5:47AMSunset 8:30PM Tuesday June 27, 2017 1:22 PM EDT (17:22 UTC) Moonrise 8:45AMMoonset 10:29PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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- 114 Pm Edt Tue Jun 27 2017
This afternoon..NE winds 10 kt...becoming E late. Waves 1 to 2 ft. A slight chance of showers and tstms.
Tonight..E winds 5 kt...becoming N after midnight, then increasing to 10 to 15 kt late. Waves 1 to 2 ft.
Wed..N winds 15 kt...becoming E 5 to 10 kt in the afternoon. Waves 2 to 3 ft...subsiding to 1 to 2 ft.
Wed night..S winds 10 to 15 kt. Waves 1 to 2 ft.
Thu..S winds 10 to 15 kt. Waves 1 to 2 ft... Building to 2 to 3 ft late.
Thu night..SW winds 15 kt. Waves 2 to 3 ft.
Fri..S winds 10 to 15 kt. Waves around 2 ft.
Fri night..S winds 10 to 15 kt. Waves around 2 ft.
Sat..S winds 10 to 15 kt. Waves 1 to 2 ft.
Sat night..SW winds 10 to 15 kt. Waves around 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ652 Coastal Waters From Chincoteague To Parramore Island Va Out 20 Nm- 114 Pm Edt Tue Jun 27 2017
This afternoon..S winds 5 to 10 kt. Seas around 2 ft... Mainly se swell with a dominant period of 7 seconds. A slight chance of showers and tstms.
Tonight..W winds 5 to 10 kt...becoming nw 10 to 15 kt after midnight. Seas 2 to 3 ft with a dominant period of 9 seconds.
Wed..N winds 10 to 15 kt...becoming E 5 to 10 kt early in the afternoon, then becoming S late. Seas 2 to 3 ft with a dominant period of 9 seconds.
Wed night..S winds 10 kt. Seas 1 to 2 ft... Mainly se swell with a dominant period of 9 seconds.
Thu..SW winds 10 kt...becoming S 15 to 20 kt in the late morning and afternoon. Seas 2 to 3 ft... Building to 3 to 4 ft late.
Thu night..SW winds 15 to 20 kt. Seas 3 to 4 ft.
Fri..SW winds 15 kt. Seas 3 to 4 ft.
Fri night..S winds 15 to 20 kt...becoming sw 10 to 15 kt after midnight. Seas 3 to 4 ft.
Sat..S winds 10 to 15 kt. Seas around 3 ft.
Sat night..S winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher and visibilities lower in and near tstms.

7 Day Forecast for Portsmouth, VA
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location: 36.929, -76.345     debug


7 Day Forecast for Chincoteague, VA
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location: 37.834, -75.409     


Area Discussion for - Wakefield, VA
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Fxus61 kakq 271718
afdakq
area forecast discussion
national weather service wakefield va
118 pm edt Tue jun 27 2017

Synopsis
A weak cold front will cross the area later today into tonight.

High pressure will build over the area Wednesday, then slides
off the coast for Wednesday night into Friday.

Near term until 6 pm this evening
Broad trough aloft slides fm the ERN great lakes oh valley e
through the NE CONUS and mid atlc region this aftn into this
evening. A relatively potent S W aloft will track acrs the local
area this aftn early evening. Despite relatively dry airmass,
this system could prove strong enough to squeeze out isolated to
sctd showers tstms, esply along and E of I 95. Will carry
20-30% pops, with the highest pops over extrm SE va and NE nc.

Highs in the upper 70s to lower 80s.

Short term 6 pm this evening through Thursday
Sfc hi pres will finally build into over the region tonight
through wed... Providing dry weather and comfortable conditions
under a mainly clear sky. Lows tonight in the l-m50s inland... To
the u50s to l60s at the coast. Highs on Wed ranging in the
l-m80s... Mainly 70s at the beaches.

The high will slide off the coast for Wed night and thu... Maintaining
dry wx. A little more humidity returns as ssw flow starts to
dominate again (dewpoints return to more climo normal levels (in
the 60s) by Thu afternoon). Lows Wed night in the u50s-l60s
inland... L-m60s at the coast. Highs Thu 85-90f... Except l80s at
the beaches.

Long term Thursday night through Monday
Long term period will begin mainly dry Thu night Fri as the
models remain in good agreement with the pattern of high
pressure at the sfc and aloft centered off the mid-atlc se
coast. Highs Fri look to warm into the upper 80s lower 90s with
dew pts increasing to the upper 60s lower 70s. An isolated late
day TSTM possible over the far W and for interior NE nc but have
genly kept pops <15%. A little better chance for rain arrives
sat aftn Sat night as somewhat deeper moisture develops along a
lee trough. Will cap pops at 20-30% in the aftn evening under
partly-mostly sunny skies as any more significant forcing stays
w of the mtns closer to an approaching cold front. Lows mainly
70-75 f with highs again primarily in the upper 80s to lower
90s. Sunday will see a further increase in pops to ~40% by
aftn evening as the cold front gets closer to the local area.

With this several days out will cap pops at 40% for now, but may
raise pops for this in future updates if the timing holds. Mon
will see the front slow or stall across mainly southern portions
of the area with ~40% pops S to 20-30% elsewhere. Lows upper
60s to lower 70s and highs 85-90 f.

Aviation 17z Tuesday through Saturday
Vfr conditions through the 18z TAF period. A weak cold front
will pass through the region late this afternoon tonight.

Additional isolated scattered shwrs tstms are possible this
afternoon and evening, especially E of I 95. Latest hi-res
guidance suggests ksby has the best chance, but not high enough
to include in TAF at this time. Winds will be variable and under
10kts until frontal passage, then become N NE post frontal
passage. Otherwise...VFR conditions expected for much of the
week... As sfc hi pres builds over the region, then slides off
the coast on Thursday. Next chance for ceiling vsby
restrictions will be late Friday Saturday in scattered
showers tstms.

Marine
10 am update... Have increased winds waves through the rest
of the morning as observations show brief northerly surge moving
down the middle lower bay. Winds should subside to 10 kt or
less around or shortly after noon. In addition, hi res models
suggest another northerly surge overnight into early Wednesday
morning behind secondary cold front. Winds could approach sca
criteria for a brief period, before again subsiding by late
morning. Rest of forecast unchanged at this time.

Previous discussion... Generally a quiet pattern through wed
night with a weak pressure gradient, although there will be a
few brief wind shifts W weak frontal passages early this
morning and with pressure rises Wed morning as sfc high pressure
builds into the region from the nw. Weak CAA today will only
bring N NW winds behind the front of 10-15 kt, diminishing by
aftn to 5-10 kt. Sfc high pressure returns for Wednesday aftn
leading to an aftn sea breeze 10 kt or less. Waves over the bay
only 1-2 ft with seas over the coastal waters 2-3 ft thru wed.

High pressure slides well off the coast Thursday Friday with
return flow resulting in increasing s-sw winds to 15-20 kt.

Waves 2-3 ft on the bay and seas possibly building to 4-5 ft
north of parramore island (genly more like 2-4 ft for southern
coastal waters). A few SCA headlines may be needed late Thu thu
night, but they will be marginal events.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Tmg
near term... Tmg
short term... Alb tmg
long term... Lkb
aviation... Wrs
marine... Jdm lkb wrs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWPV2 - 8638610 - Sewells Point, VA 1 mi65 min 79°F1016.6 hPa
CRYV2 - 8638595 - South Craney Island, VA 3 mi65 min NNE 6 G 8 76°F 1016.5 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi65 min NNE 9.9 G 11 75°F 1016.6 hPa
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi125 min Calm G 2.9 75°F 1017.5 hPa
MNPV2 - 8639348 - Money Point, VA 11 mi65 min N 7 G 12 78°F 79°F1016.5 hPa
CBBV2 - 8638863 - Chesapeake Bay Bridge Tunnel, VA 13 mi65 min NE 12 G 14 74°F 74°F1016.4 hPa
44064 14 mi53 min 9.7 G 12 75°F 1016.4 hPa
CHYV2 - 8638999 - Cape Henry, VA 18 mi65 min N 9.9 G 12 73°F
44072 19 mi53 min NE 9.7 G 12 75°F
YKTV2 - 8637689 - Yorktown, VA 22 mi65 min ENE 1 G 1.9 77°F 79°F1016.4 hPa
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi65 min NNE 6 G 8 75°F 1017.1 hPa
KPTV2 - 8632200 - Kiptopeke, VA 25 mi65 min NE 2.9 G 8 75°F
44096 29 mi62 min 69°F1 ft
44041 - Jamestown, VA 30 mi53 min WSW 1.9 G 3.9 77°F
44099 - Cape Henry, VA (147) 33 mi53 min 73°F1 ft
YRSV2 - Chesapeake Bay,VA 39 mi113 min N 1 77°F 1018 hPa57°F
WAHV2 - 8631044 - Wachapreague, VA 59 mi65 min W 1.9 G 5.1 81°F 77°F1016.3 hPa
44014 - VIRGINIA BEACH 64 NM East of Virginia Beach, VA 83 mi93 min SSW 3.9 G 3.9 74°F 75°F1 ft1017.2 hPa (+0.0)67°F

Wind History for South Craney Island, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Norfolk, Naval Air Station, VA3 mi84 minNNE 1010.00 miMostly Cloudy80°F60°F51%1017.5 hPa
Norfolk, Norfolk International Airport, VA8 mi32 minNE 710.00 miFair80°F61°F52%1016.5 hPa
Langley Air Force Base, VA11 mi85 minS 910.00 miMostly Cloudy72°F60°F69%1016.9 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi29 minE 410.00 miFair80°F57°F47%1016.5 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi27 minNE 610.00 miMostly Cloudy78°F62°F58%1016.4 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi48 minNNW 37.00 miPartly Cloudy80°F60°F52%1016.6 hPa
Fort Eustis / Felker, VA21 mi85 minN 010.00 miFair81°F56°F43%1016.9 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi48 minENE 310.00 miFair80°F59°F49%1016.6 hPa

Wind History from NGU (wind in knots)
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Last 24hrNE64E6E8E9SE7SE7SE5S6S7S4S4S5S4S5SW5SW5SW5W5NW9N8N12N10N8
1 day agoNE11NE9NE3E5E5E4--CalmCalmNW9W8W5W6NW6NW9N7NW6N5NW6N6N7N7NE5N4
2 days agoW7W7NW7W9S4SW7SW5SW4S4SW4S4S4SW4SW6W6W5SW3SW4W4W4W4W4N8N8

Tide / Current Tables for Sewells Point, Hampton Roads, Virginia
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Sewells Point
Click for Map
Tue -- 12:11 AM EDT     3.10 feet High Tide
Tue -- 05:47 AM EDT     Sunrise
Tue -- 06:35 AM EDT     -0.28 feet Low Tide
Tue -- 09:44 AM EDT     Moonrise
Tue -- 12:41 PM EDT     2.70 feet High Tide
Tue -- 06:46 PM EDT     -0.16 feet Low Tide
Tue -- 08:28 PM EDT     Sunset
Tue -- 11:29 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.132.51.80.90.2-0.2-0.20.10.81.52.22.62.72.41.81.10.4-0-0.10.10.71.52.2

Tide / Current Tables for Chesapeake Bay Entrance, Virginia Current
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Chesapeake Bay Entrance
Click for Map
Tue -- 02:33 AM EDT     -0.00 knots Slack
Tue -- 05:46 AM EDT     Sunrise
Tue -- 06:00 AM EDT     -1.65 knots Max Ebb
Tue -- 09:12 AM EDT     0.00 knots Slack
Tue -- 09:43 AM EDT     Moonrise
Tue -- 11:31 AM EDT     0.96 knots Max Flood
Tue -- 02:34 PM EDT     -0.00 knots Slack
Tue -- 06:02 PM EDT     -1.49 knots Max Ebb
Tue -- 08:27 PM EDT     Sunset
Tue -- 09:05 PM EDT     0.00 knots Slack
Tue -- 11:27 PM EDT     Moonset
Tue -- 11:47 PM EDT     1.25 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.3-0.3-1-1.5-1.7-1.5-0.9-0.20.50.90.90.70.3-0.2-0.8-1.3-1.5-1.3-0.8-0.10.71.1

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 (13,3,4,5)
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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.