Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Portsmouth, VA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 5:51AMSunset 8:12PM Sunday May 20, 2018 7:30 AM EDT (11:30 UTC) Moonrise 10:04AMMoonset 12:00AM Illumination 30% 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
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ANZ632 Chesapeake Bay From New Point Comfort To Little Creek Va- 645 Am Edt Sun May 20 2018
Today..SW winds 15 kt, diminishing to 10 to 15 kt. Waves 2 to 3 ft. Scattered showers early this morning, then a slight chance of showers late this morning and afternoon. A slight chance of tstms this afternoon.
Tonight..SW winds 10 to 15 kt, diminishing to 5 to 10 kt late. Waves 1 to 2 ft. A chance of showers after midnight.
Mon..SW winds 5 to 10 kt, becoming S late in the morning, then becoming E in the afternoon. Waves 1 foot. A chance of showers in the morning.
Mon night..E winds 5 to 10 kt, becoming se after midnight. Waves 1 foot. A chance of showers and tstms.
Tue..S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers. A chance of tstms in the afternoon.
Tue night..SW winds 10 kt. Waves around 2 ft. A chance of tstms in the evening. A chance of showers.
Wed..SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms.
Wed night..W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms in the evening.
Thu..N winds 5 to 10 kt, becoming ne in the afternoon. Waves around 2 ft.
Thu night..SE winds 5 to 10 kt. Waves 1 foot. Winds and waves higher in and near tstms.
ANZ652 Coastal Waters From Chincoteague To Parramore Island Va Out 20 Nm- 645 Am Edt Sun May 20 2018
.small craft advisory in effect through this evening...
Today..SW winds 15 to 20 kt. Seas 4 to 5 ft with a dominant period of 8 seconds. A slight chance of showers early this morning. A slight chance of showers and tstms this afternoon.
Tonight..SW winds 10 to 15 kt, becoming W 5 to 10 kt late. Seas 4 to 5 ft with a dominant period of 8 seconds, subsiding to 3 to 4 ft. A chance of showers.
Mon..NW winds 5 to 10 kt, becoming ne in the late morning and afternoon. Seas 3 to 4 ft. Mainly se swell with a dominant period of 8 seconds.
Mon night..E winds 5 to 10 kt. Seas 2 to 3 ft. Mainly se swell with a dominant period of 8 seconds. A chance of showers. A chance of tstms after midnight.
Tue..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of tstms in the morning. A chance of showers.
Tue night..SW winds 10 kt. Seas around 2 ft, building to 3 to 4 ft in the late evening and overnight. A chance of showers.
Wed..SW winds 5 to 10 kt. Seas around 3 ft. A chance of showers in the morning.
Wed night..SW winds 5 kt, becoming nw after midnight. Seas around 2 ft.
Thu..N winds 10 kt, becoming ne in the afternoon. Seas 2 to 3 ft.
Thu night..E winds 10 kt, becoming S after midnight. Seas around 2 ft. Winds and seas higher 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 200947
afdakq
area forecast discussion
national weather service wakefield va
547 am edt Sun may 20 2018

Synopsis
Somewhat drier air will prevail today before another round of
increasing moisture returns Monday through Wednesday. A period
of dry weather looks promising by Thursday and Friday.

Near term through tonight
As of 400 am edt Sunday...

current analysis indicates a weakening flat upper level trough
over the great lakes oh valley (with a stronger upper level
trough now farther upstream over the southern plains). Sfc
frontal boundary resides N of the local area. Still enough moist
sw flow in place for scattered showers early this morning
across SE va NE nc while area of showers that had been ongoing
last evening closer to the mtns has genly diminished. Enough of
a low level ssw flow in place that fog will not be a concern
early this morning despite some low clouds. For today, pops will
remain in the forecast but will be much lower than the
widespread rain of the past few days as the upper level
trough weak shortwave energy aloft passes through the region.

After morning clouds, expect some partial sunshine this aftn and
this could lead to some isolated scattered late aftn evening
tstms. Highest pops this morning into the aftn over the se
(30-40%), but by the evening high res models are suggesting a
secondary area of showers tstms develops moves in from the wnw
and have 20-30% pops moving through all areas. Highs today will
avg in the mid- upper 80s over interior va and md, a little
cooler in NE nc and atlc beaches with highs mainly from 80 to 85
f. Partly mostly cloudy tonight with lows mainly from the mid
60s to around 70 f.

Short term Monday through Tuesday
As of 400 am edt Sunday...

on mon, will see some weak onshore NE flow develop for awhile
along the coast, but by aftn as the flow aloft shifts from the
w to the wsw... Expecting increasing moisture ahead of the next
approaching systems from the S and w. Partly sunny- mostly
cloudy W pops by afternoon rising to 30-50% inland in the
afternoon... 10-30% toward the ERN shore. SPC has marginal risk
svr for N and central areas for possible strong stms but this
may not be until the evening hrs. Highs in the 70s at the coast
to the low-mid 80s inland.

Warm front pulls N of the region Mon night (w possible sct
shras-tstms)... And will have 40-60% pops all areas. Sfc high
pres off the SE CONUS coast remains in control tue. Low pres and
its accompanying cold front tracks through the midwest- oh
valley tue. Vrb clouds- partly sunny Tue W mainly diurnal pops
(20-40%) (tue) ahead of that system, but pops have been
increased later in the day W decent feed of moisture and lift
noted by latest nam GFS 00z runs. Lows Mon night in the low 60s
on the lower md ERN shore to the m-u60s elsewhere. Highs tue
from the m-u70s at the coast to 80-85f inland.

Long term Tuesday night through Saturday
As of 240 pm edt Saturday...

a respite from the wet wx pattern suggested by most extended
models for mid-late in the upcoming week. Just enough of a nw
flow aloft suggests that drying will take place after Wed and
last into next weekend. Lo pres passing by N of the region tue
night-wed will push a cold front (possibly accompanied by
shras tstms) E and S of the local area. Hi pres is then expected
to build into the region for thu-fri. By next sat... A return
flow from the ssw to set up potentially resulting in increasing
moisture gradual rise in pops.

Lows Tue night in the m-u60s. Highs Wed in the 70s-around 80f
at the coast to the m80s inland. Lows Wed night in the l-m60s.

Highs Thu from the u70s-m80s. Lows Thu night mainly 60-65f.

Highs Fri 80-85f... 70s at the immediate coast. Highs Sat in the
m-u80s inland... U70s-l80s at the coast.

Aviation 10z Sunday through Thursday
As of 200 am edt Sunday...

the more widespread showers are mainly off to the west of area
early this morning, but some spotty widely scattered showers
will move through far SE va NE nc through 09z and have vcsh and
tempo groups for shra and MVFR flight restrictions at korf kecg.

S SW winds avg around 10 kt through this morning and this should
keep fog from developing. MVFR CIGS will prevail at most
terminals, with a period of ifr possible at ric sby phf
(08-14z). CIGS gradually lift later this morning through early
aftn, and potentially scatter out inland later in the aftn. A sw
of 8-12kt is expected, with occasional gusts to 20kt possible.

There is a 20-30% chc of showers tstms Sunday aftn, mainly
towards the coast.

A chc of aftn evening showers tstms will continue Monday through
Wednesday. A moist airmass will remain over the region and a
potential will exist for patchy early morning fog and or
stratus. High pressure may build in from the N by Thursday.

Marine
As of 415 am edt Sunday...

ssw winds were mainly 10-15 kt with a few gusts to 20 kt early
this morning acrs the waters. Winds will become SW later this
morning into this aftn at 5-15 kt. Seas will be 3-4 ft, except
4-5 ft north of parramore island into this evening, where a sca
remains in effect. Waves 1-3 ft this morning, then 1-2 ft by
tonight. Another frontal boundary will drop into at least northern
portions of the area late tonight into Mon morning, but NE or e
winds will remain around 10 kt or less over the northern waters.

Thus, am expecting seas to remain between 2-4 ft on mon, with
waves fm 1-2 ft. The frontal boundary lifts back north of the
region Mon night into Tue morning, with winds becoming S 5-15 kt
during tue. SW winds 5-15 kt expected late Tue night into wed
morning. A cold front then drops through the region Wed night
into Thu morning, with winds turning northerly.

Hydrology
As of 530 am edt Sunday...

flood warnings have been cancelled for bremo bluff on the james
river, and rawlings on the nottoway river. Flood warnings continue
for the james and appomattox river basins. Warnings also continue
for the meherrin and nottoway rivers (at stony creek), as well
as portions of the chowan basin. Additional flood warnings
continue for the chickahominy, south anna and mattaponi rivers,
as well as the pocomoke river in md. See flwakq or flsakq for
more details.

Tides coastal flooding
As of 415 am edt Sunday...

a coastal flood advisory will remain in effect until 9 am for
areas adjacent to the potomac river on the northern neck, and
also for the chesapeake bay side of the lower md eastern shore
until 11 am for this morning's high tide cycle. Water levels
will run 1-1.5 ft above normal, resulting in minor tidal
flooding at lewisetta, bishops head and cambridge.

Climate
As of 200 am edt Sunday...

* ric monthly rainfall total through 5 19 is now 8.84" (already
ranks as 5th wettest may on record). (precipitation records
date back to 1880)
* sby monthly rainfall total through 5 19 is now 8.51" (already
ranks as 3rd wettest may on record). (precipitation records
date back to 1906)

Akq watches warnings advisories
Md... Coastal flood advisory until 11 am edt this morning for
mdz021>023.

Nc... None.

Va... Coastal flood advisory until 9 am edt this morning for vaz075-
077.

Marine... Small craft advisory until 10 pm edt this evening for anz650-
652.

Synopsis... Lkb
near term... Lkb
short term... Alb lkb
long term... Alb
aviation... Lkb
marine... Tmg
hydrology... Akq
tides coastal flooding... Akq
climate... Akq


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SWPV2 - 8638610 - Sewells Point, VA 1 mi43 min 72°F
CRYV2 - 8638595 - South Craney Island, VA 3 mi43 min SSW 8 G 13 73°F 1019.4 hPa
WDSV2 - 8638614 - Willoughby Deguassing , VA 4 mi43 min SW 17 G 19
DOMV2 - 8638511 - Dominion Terminal Association, VA 5 mi43 min SW 15 G 18 73°F 1019.7 hPa
MNPV2 - 8639348 - Money Point, VA 11 mi43 min SSW 5.1 G 8 73°F 72°F1019.7 hPa
44064 14 mi31 min SW 9.7 G 14 71°F 67°F1 ft1019.4 hPa (+0.6)
CHBV2 16 mi49 min SW 11 G 14 72°F 1018.5 hPa
CHYV2 - 8638999 - Cape Henry, VA 18 mi43 min SSW 7 G 12 73°F
44072 19 mi31 min SW 18 G 21 73°F 2 ft
YKRV2 - 8637611 - York River East Rear Range Light, VA 22 mi43 min SW 20 G 24 73°F 1019.3 hPa
YKTV2 - 8637689 - Yorktown, VA 22 mi43 min SW 11 G 16 73°F 71°F1018.4 hPa
KPTV2 - 8632200 - Kiptopeke, VA 25 mi49 min SSW 11 G 13 68°F
44099 - Cape Henry, VA (147) 33 mi31 min 66°F4 ft
YRSV2 - Chesapeake Bay,VA 39 mi61 min SW 2.9 73°F 1020 hPa71°F
WAHV2 - 8631044 - Wachapreague, VA 59 mi43 min SW 7 G 11 73°F 71°F1018.6 hPa
44014 - VIRGINIA BEACH 64 NM East of Virginia Beach, VA 83 mi41 min SSW 14 G 14 67°F 64°F6 ft1021.1 hPa (-0.0)67°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 mi92 minSW 109.00 miOvercast73°F69°F87%1019.7 hPa
Norfolk, Norfolk International Airport, VA8 mi40 minSW 1410.00 miOvercast74°F72°F94%1019.4 hPa
Langley Air Force Base, VA11 mi95 minSW 14 G 1910.00 miOvercast73°F70°F92%1020 hPa
Newport News, Newport News / Williamsburg International Airport, VA17 mi37 minSW 1410.00 miOvercast73°F69°F87%1019.2 hPa
Virginia Beach, Oceana, Naval Air Station, VA18 mi35 minSSW 98.00 miOvercast73°F72°F96%1019.8 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi36 minSSW 65.00 miFog/Mist72°F70°F95%1020 hPa
Fort Eustis / Felker, VA21 mi95 minSSW 710.00 miOvercast73°F69°F89%1018.6 hPa
Suffolk, Suffolk Municipal Airport, VA22 mi56 minSSW 810.00 miOvercast72°F71°F97%1020.3 hPa

Wind History from NGU (wind in knots)
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Last 24hrS5S6S11
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S10S6S7S7SW4S8SW7S4S4S7SW7S6S7SW7S9
G16
SW9S7SW9SW10SW9
G18
1 day agoS56S7
G15
S9S14
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S7S6SE8SE7E9NE6E6E6E4E5E3CalmS7
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2 days agoSW7SW6S5S6SW6S4CalmNE5SE7E7E5SE4S5S4S5S6S4S4S5SE5S4S4S5S6

Tide / Current Tables for Sewells Point, Hampton Roads, Virginia
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Sewells Point
Click for Map
Sun -- 12:34 AM EDT     Moonset
Sun -- 01:37 AM EDT     2.98 feet High Tide
Sun -- 05:53 AM EDT     Sunrise
Sun -- 08:07 AM EDT     -0.06 feet Low Tide
Sun -- 11:04 AM EDT     Moonrise
Sun -- 02:11 PM EDT     2.53 feet High Tide
Sun -- 08:10 PM EDT     Sunset
Sun -- 08:16 PM EDT     0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.52.932.72.11.40.70.2-0.10.10.51.21.82.32.52.421.50.80.300.10.51.1

Tide / Current Tables for Chesapeake Bay Entrance, Virginia Current
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Chesapeake Bay Entrance
Click for Map
Sun -- 12:19 AM EDT     1.21 knots Max Flood
Sun -- 12:33 AM EDT     Moonset
Sun -- 04:00 AM EDT     -0.00 knots Slack
Sun -- 05:52 AM EDT     Sunrise
Sun -- 07:40 AM EDT     -1.45 knots Max Ebb
Sun -- 10:53 AM EDT     0.00 knots Slack
Sun -- 11:03 AM EDT     Moonrise
Sun -- 01:09 PM EDT     0.74 knots Max Flood
Sun -- 04:04 PM EDT     -0.00 knots Slack
Sun -- 07:42 PM EDT     -1.27 knots Max Ebb
Sun -- 08:09 PM EDT     Sunset
Sun -- 10:39 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.10.90.5-0-0.5-1-1.4-1.4-1.1-0.60.10.50.70.60.40-0.4-0.9-1.2-1.3-1-0.40.2

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Mid-Atlantic    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Wakefield, VA (7,2,3,4)
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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.