Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Portsmouth, 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 6:10AMSunset 7:54PM Saturday April 29, 2017 1:31 AM EDT (05:31 UTC) Moonrise 8:04AMMoonset 10:36PM Illumination 11% 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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ANZ632 Chesapeake Bay From New Point Comfort To Little Creek Va- 111 Am Edt Sat Apr 29 2017
Rest of tonight..SW winds 10 kt. Waves 1 to 2 ft.
Sat..SW winds 10 to 15 kt. Waves 2 ft.
Sat night..SW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun..SW winds 10 kt. Waves 1 to 2 ft.
Sun night..S winds 10 to 15 kt. Waves 2 to 3 ft.
Mon..S winds 15 to 20 kt. Waves 3 to 4 ft.
Mon night..SW winds 15 to 20 kt. Waves 3 to 4 ft. Showers and tstms likely.
Tue..SW winds 10 to 15 kt. Waves 2 ft. Showers and tstms likely in the morning.
Tue night..W winds 10 to 15 kt. Waves 1 to 2 ft.
Wed..SW winds 10 kt. Waves 1 foot.
Wed night..S winds 5 to 10 kt. Waves 1 foot. Winds and waves higher and visibilities lower in and near tstms.
ANZ652 Coastal Waters From Chincoteague To Parramore Island Va Out 20 Nm- 111 Am Edt Sat Apr 29 2017
Rest of tonight..SW winds 10 to 15 kt. Seas 3 to 4 ft with a dominant period of 9 seconds.
Sat..SW winds 15 kt. Seas 3 to 4 ft with a dominant period of 8 seconds.
Sat night..SW winds 10 to 15 kt. Seas 3 to 4 ft with a dominant period of 8 seconds.
Sun..S winds 10 to 15 kt. Seas 3 to 4 ft.
Sun night..S winds 15 to 20 kt. Seas 3 to 4 ft.
Mon..S winds 15 to 20 kt with gusts to around 30 kt... Increasing to 20 to 25 kt with gusts to around 30 kt late. Seas 4 to 5 ft.
Mon night..SW winds 20 to 25 kt. Seas 5 to 6 ft. Showers and tstms likely.
Tue..SW winds 15 to 20 kt. Seas 4 to 5 ft. Showers and tstms likely in the morning.
Tue night..W winds 10 to 15 kt. Seas 4 to 5 ft.
Wed..SW winds 10 kt. Seas 3 to 4 ft.
Wed night..S winds 10 kt. Seas 2 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 290444
afdakq
area forecast discussion
national weather service wakefield va
1244 am edt Sat apr 29 2017

Synopsis
Bermuda high pressure prevails off the southeast coast through the
weekend. A backdoor cold front will drop south across the northern
delmarva peninsula tonight then lift back north as a warm front
Sunday. The next cold front pushes across the region Monday night.

Near term /until 6 am this morning/
Adjusted grids overnight based on the ifr stratus moving north
along the outer banks and the pesky stratus and fog at oxb.

Otw, high clouds will overspread the area from the north
associated with the convection along the frontal boundary ivof
mason dixon line. Lows in the upr 60s to lwr 70s.

Short term /6 am this morning through Monday/
Bermuda sfc high retrogrades towards the southeast coast over
the weekend, with stacked mid-high level high pressure
amplifying over the mid-atlantic region through Saturday.

Factoring in increasing dewpoints and decent south to southwest
winds during this time, warm temperatures can be expected. Highs
Saturday in the lower 90s inland (85-90f beaches). Local
climate sites may tie or break records tomorrow. See climate
section below for more detailed information. With the stacked
high overhead, precipitation will be very limited due to
downslope drying from south-southwest winds and strong
subsidence aloft, which will limit lift/instability potential
for convection or anything other than few-sct fair weather
cumulus clouds in the afternoon.

The warm front, which is associated with the southern plains
low, is expected to stall INVOF nrn va/mason-dixon line Saturday
night into Sunday. Isolated to scattered showers/storms will be
possible along/north of a line from caroline county to wallops
island Saturday evening. Any threat for rain ends thereafter due
to the boundary shifting northeast and lack of daytime heating
to support lift/convection. Meanwhile, mid-upper level high
pressure shifts eastward and away from the southeast coast late
Saturday night into Sunday, and temperatures will continue to be
very warm. Expect lows in the upper 60s to lower 70s (mid 60s
beaches), and highs in the upper 80s to lower 90s inland (low-
mid 80s beaches due to a slightly more onshore wind direction).

Temps still in ballpark to tie or break records for maximum low
temperatures and could fall a few degrees short for high temp
records on Sunday. Again, see climate section below for more
detailed information.

The SRN plains low tracks nne into ia/mn/wi Sunday night into
Monday, and the strong cold front associated with it is expected
to track across the ohio valley on Monday... Approaching the mid
atlantic region. Slightly cooler Sunday night as high cirrus
streams into the area from the sw-w in southwest flow aloft.

Expect lows generally in the upper 60s (low-mid 60s beaches).

Winds ramp up by mid-late morning on Monday ahead of the
approaching front. South to southwest winds of 20-25 mph with
gusts of 30-35 mph should be anticipated. Models have
precipitation progged to arrive in far WRN portions of the cwa
in the afternoon. In reality, the orientation of the front and
subsequent upper level jet are oriented north to south, which
will likely result in a slower arrival time sometime Monday
evening. Can shore up better timing potential over the next few
model runs. Overall, the front is not expected to cross the
region until Monday night with more widespread showers/storms
anticipated. Pwats approach 1.50 inches by the time rain begins
and periods of moderate to heavy rainfall should occur. Wind
profiles are fairly unidirectional from southwest with low-level
veering with height. This would suggest that strong to locally
severe wind gusts will also be possible. Again, can shore up
details as Monday nears. Temperatures could prove to be tricky
as mid- high clouds increase from the sw-w as Monday progresses,
however ample mixing could negate any cooling effects from the
expected cloud cover. Kept temperatures warmer than model
guidance with highs in the mid-upper 80s (low-mid 80s beaches).

Long term /Monday night through Friday/
Cold front will move across the region then off the coast Mon night
into Tue morning, with at least sctd showers and tstms in
advance of the front. Weak high pressure will provide dry wx for
later Tue morning thru wed, as it slides fm the gulf coast
states to off the SE coast. Lows Mon night in the upper 50s to
mid 60s. Highs on Tue in the mid 70s to lower 80s. Lows tue
night ranging thru the 50s into the lower 60s. Highs on wed
ranging thru the 70s to near 80. Low pressure will approach fm
the wsw late Wed night thru thu, then lifts just wnw of the area
during Fri while pushing a cold front into the region. Pops
will increase to high chc on thu, then high chc to likely pops
for Thu night and fri. Highs on Thu will range fm the upper 60s
to upper 70s. Lows Thu night will range fm the lower 50s to
lower 60s. Highs on Fri will range fm the mid 60s to mid 70s.

Aviation /06z Saturday through Wednesday/
Vfr conditions in place across the region with mostly clear sky
and winds out of the south 5-10 kt. The wind will pick up
overnight into Sat morning out of the SW 10-15 kt. Some low
level moisture (stratus) is expected to develop from the south
and move over eastern portions of the CWA late tonight into the
morning period. Have decided to keep most of the lower clouds
scattered andVFR at the TAF sites... Except sby... But some MVFR
ceilings are possible for a short period. Otherwise, expect
mostlyVFR conditions on Saturday with SW gusty flow.

Outlook... Mainly dry weather expected through the remainder of
the weekend. Next frontal boundary expected late Monday into
Tuesday with possibility of showers and thunderstorms.

Marine
No headlines in the short term tonight thru sun. High pressure
will set up off the SE coast for tonight into mon, providing ssw
winds 15 kt or less thru sun. A cold front will then approach fm
the west during mon, then moves acrs the area and off the coast
mon night into Tue morning. Stronger ssw winds expected late sun
night into Mon night, resulting in sca's over the waters. SW or
w winds and below SCA conditions expected behind the front for
tue and wed.

Hydrology
Cashie river at windsor dropped below flood stage early this
evening... And flood warning has been dropped. Have continued
flood advisory in mecklenburg county through tomorrow, with
vdot continuing to report numerous roads closed in the kerr dam
area, creating ongoing navigation concerns.

Climate
It still appears likely that richmond and norfolk will each end
the month with the warmest april on record. Very warm temperatures
expected through Sunday and an unseasonably warm april to date
should combine to push the april 2017 average temperature above
that which occurred in 1994. As noted below, both of the
previous records on the books were established in 1994. This
month's temperatures look to end up around one degree above
those values.

Average temperatures / record average temperature
through today 4/28/17:
apr 2017
avg temp record
location to date avg temp year
-------- -------- ------ ----
richmond 63.1 63.2 1994
norfolk 65.3 64.7 1994
*********************************************
record lows/highs for Saturday 4/29:
forecast record
location low low year
-------- -------- ------ ----
richmond 72 67 1956
norfolk 70 66 1981
salisbury 69 65 1974
forecast record
location high high year
-------- -------- ------ ----
richmond 93 93 1974
norfolk 91 92 1974
salisbury 90 89 1974
*********************************************
record lows/highs for april 30:
forecast record
location low low year
-------- -------- ------ ----
richmond 72 63 2014
norfolk 70 67 1994
salisbury 68 63 1983
forecast record
location high high year
-------- -------- ------ ----
richmond 91 94 1942
norfolk 88 93 1888
salisbury 86 86 1974

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

Nc... None.

Va... None.

Marine... None.

Synopsis... Mpr
near term... Mpr
short term... Bmd
long term... Tmg
aviation... Ess/jef
marine... Tmg
hydrology... Akq
climate... Akq


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWPV2 - 8638610 - Sewells Point, VA 1 mi44 min 67°F1018.8 hPa
CRYV2 - 8638595 - South Craney Island, VA 3 mi44 min SSW 9.9 G 14 76°F 1018.6 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi44 min SSW 15 G 18 76°F 1019.6 hPa
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi44 min S 8.9 G 12 74°F 1018.9 hPa
MNPV2 - 8639348 - Money Point, VA 11 mi44 min SSW 6 G 9.9 76°F 67°F1019 hPa
CBBV2 - 8638863 - Chesapeake Bay Bridge Tunnel, VA 13 mi44 min SW 12 G 17 75°F 63°F1018.5 hPa
44064 14 mi32 min 7.8 G 9.7 71°F 64°F1 ft1019 hPa (+0.6)
CHYV2 - 8638999 - Cape Henry, VA 18 mi44 min S 8.9 G 14 75°F
44072 19 mi32 min S 9.7 G 12 70°F 65°F1 ft
YKTV2 - 8637689 - Yorktown, VA 22 mi44 min SSW 9.9 G 12 78°F 65°F1017.8 hPa
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi44 min SSW 15 G 16 73°F 1017.6 hPa
KPTV2 - 8632200 - Kiptopeke, VA 25 mi44 min S 8.9 G 9.9 65°F
44096 29 mi41 min 62°F3 ft
44041 - Jamestown, VA 30 mi32 min SSW 7.8 G 14 76°F 70°F
44099 - Cape Henry, VA (147) 33 mi50 min 63°F3 ft
YRSV2 - Chesapeake Bay,VA 39 mi62 min S 1.9 78°F 1019 hPa71°F
WAHV2 - 8631044 - Wachapreague, VA 59 mi44 min S 8 G 12 69°F 70°F1018.2 hPa
44014 - VIRGINIA BEACH 64 NM East of Virginia Beach, VA 83 mi42 min SSW 14 G 16 63°F 57°F4 ft1020.8 hPa (+0.8)63°F

Wind History for South Craney Island, VA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Norfolk, Naval Air Station, VA3 mi93 minSSW 77.00 miPartly Cloudy78°F73°F85%1019.1 hPa
Norfolk, Norfolk International Airport, VA8 mi41 minSSW 1110.00 miFair77°F72°F85%1018.7 hPa
Langley Air Force Base, VA11 mi34 minS 1110.00 miFair77°F73°F91%1018.9 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi38 minSSW 99.00 miFair77°F72°F85%1018.2 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi36 minSSW 109.00 miPartly Cloudy75°F71°F88%1019.1 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi37 minS 77.00 miMostly Cloudy74°F71°F93%1019.3 hPa
Fort Eustis / Felker, VA21 mi34 minSSW 68.00 miFair76°F72°F87%1017.9 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi37 minS 910.00 miFair76°F72°F91%1019.3 hPa

Wind History from NGU (wind in knots)
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Last 24hrS6S7S8S7CalmS5S5SW7SW6W7W6SW73W54NE53SW7SW4SW445
G16
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1 day agoS6S6S6S7SW8SW8SW9SW9SW8SW11SW13
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2 days agoW11W8W10W12W10W10W8NW9W7W9W9W8W8W7W6W4CalmCalmSE6SE5SE6SE5SE6S5

Tide / Current Tables for Sewells Point, Hampton Roads, Virginia
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Sewells Point
Click for Map
Sat -- 06:13 AM EDT     Sunrise
Sat -- 06:18 AM EDT     -0.27 feet Low Tide
Sat -- 09:04 AM EDT     Moonrise
Sat -- 12:19 PM EDT     2.73 feet High Tide
Sat -- 06:22 PM EDT     -0.24 feet Low Tide
Sat -- 07:52 PM EDT     Sunset
Sat -- 11:36 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.332.41.60.70.1-0.3-0.20.311.82.42.72.62.21.50.80.1-0.2-0.20.311.92.6

Tide / Current Tables for Chesapeake Bay Entrance, Virginia Current
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Chesapeake Bay Entrance
Click for Map
Sat -- 02:12 AM EDT     -0.00 knots Slack
Sat -- 05:38 AM EDT     -1.71 knots Max Ebb
Sat -- 06:11 AM EDT     Sunrise
Sat -- 08:52 AM EDT     0.00 knots Slack
Sat -- 09:02 AM EDT     Moonrise
Sat -- 11:10 AM EDT     1.00 knots Max Flood
Sat -- 02:04 PM EDT     -0.00 knots Slack
Sat -- 05:36 PM EDT     -1.61 knots Max Ebb
Sat -- 07:51 PM EDT     Sunset
Sat -- 08:39 PM EDT     0.00 knots Slack
Sat -- 11:24 PM EDT     1.44 knots Max Flood
Sat -- 11:35 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.70.1-0.5-1.2-1.6-1.7-1.3-0.70.10.710.90.50-0.5-1.1-1.5-1.6-1.2-0.60.311.4

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 (1,6,7,8)
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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.