Friday, July21, 2017 L-36.com


Marine Weather and Tides
Norfolk, 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 6:01AMSunset 8:21PM Friday July 21, 2017 12:46 AM EDT (04:46 UTC) Moonrise 3:08AMMoonset 5:44PM Illumination 7% Phase: Waning Crescent; Moon at 27 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- 959 Pm Edt Thu Jul 20 2017
Overnight..SW winds 10 to 15 kt. Waves 1 to 2 ft.
Fri..SW winds 10 to 15 kt...becoming S 5 to 10 kt in the late morning and afternoon. Waves 1 to 2 ft.
Fri night..SW winds 5 to 10 kt. Waves 1 foot.
Sat..S winds 5 to 10 kt. Waves 1 foot.
Sat night..SW winds 5 to 10 kt...increasing to 10 to 15 kt late. Waves 1 to 2 ft. A chance of showers and tstms until early morning.
Sun..SW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun night..SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
Mon..SW winds 10 kt. Waves 1 foot. A chance of showers and tstms in the afternoon.
Mon night..SW winds 10 kt. Waves 1 foot. A chance of tstms in the evening. A chance of showers.
Tue..NW winds 5 to 10 kt...becoming ne in the afternoon. Waves 1 foot. A chance of showers. A chance of tstms in the afternoon.
Tue night..NE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms in the evening. Winds and waves higher and visibilities lower in and near tstms.
ANZ631 Chesapeake Bay From Windmill Point To New Point Comfort Va- 959 Pm Edt Thu Jul 20 2017
Overnight..SW winds 10 to 15 kt. Waves around 2 ft.
Fri..SW winds 10 to 15 kt...becoming S 5 to 10 kt in the late morning and afternoon. Waves 1 foot.
Fri night..SW winds 5 to 10 kt. Waves 1 foot.
Sat..SW winds 5 kt...becoming S late. Waves 1 foot.
Sat night..SW winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms until early morning.
Sun..SW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun night..SW winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers.
Mon..SW winds 5 to 10 kt. Waves 1 foot. A chance of showers and tstms in the afternoon.
Mon night..SW winds 5 to 10 kt. Waves 1 foot. A chance of tstms in the evening. A chance of showers.
Tue..NW winds 5 to 10 kt...becoming ne in the afternoon. Waves 1 foot. A chance of showers and tstms in the afternoon.
Tue night..NE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers and tstms in the evening. Winds and waves higher and visibilities lower in and near tstms.

7 Day Forecast for Selected point near Norfolk city, VA
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location: 36.96, -76.262     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 210135
afdakq
area forecast discussion
national weather service wakefield va
935 pm edt Thu jul 20 2017

Synopsis
High pressure builds toward the mid atlantic today into the
weekend, bringing increasingly hot and humid conditions to the
area. The hottest weather can be expected from Friday through
Sunday.

Near term through Friday
Current analysis indicates a weak sfc lee trough of low
pressure located from nj... Ssw to south central va and central
nc. The trough of low pressure aloft is now situated south of
the CWA and centered along the sc ga coast. The sky is partly
cloudy this evening under thin cirrus with some patches of
8-12kft altocu. Very warm and humid this evening with
temperatures ranging from the upper 70s to mid 80s. A few
isolated showers tstms from earlier have now dissipated. Mainly
dry overnight. Earlier convection over oh in has weakened and
seems unlikely to hold together as a weak wave aloft crosses n
of the area overnight in the wnw aloft. Warmer than last night
with lows staying 70-75 f or higher tonight.

Model consensus has the upper ridge axis centered from the tn
valley to nc on Fri into early sat, with an upper trough over
the eastern great lakes and NE states. The core of the highest
850 temperatures on Fri (21-22c) will be over much of the local
area of Fri and with dew pts expected to be higher (only mixing
out to around 70 f inland and to the lower-mid 70s near the
coast). Expect heat indices to be more solidly into advisory
criteria (105 to 109 f) and have therefore issued a heat
advisory for most of the CWA (left coastal worcester nc outer
banks out for now with cooler temperatures as well as much of
the far SW where it will be slightly drier). Actual highs will
be around 100 f metro richmond to the mid upper 90s elsewhere
(locally cooler lower 90s immediate coast). As far as precip
chances, airmass appears too stable overall for much in the way
of pop-up storms during the day, but with wnw flow aloft and
some weak shortwave energy moving into the area by late aftn,
will have ~20% pops by mid late aftn over the NW 1 2 of the cwa.

Enough shear moves into the far NW for a marginal risk for
severe with wind being the main threat is any type of convective
complex can hold together upon crossing the mtns.

Short term Friday night through Sunday
Ramped pops up a bit more for Fri night especially N NE zones
closest to upper level shortwave energy tracking through the wnw
flow aloft. Very warm humid Fri night with lows mainly 75 to 80
f. Slightly cooler most areas for Sat due to potential for more
clouds and as core of 850 mb heat shifts a bit s. However, it
will be even more humid so expect at least southern portions of
the CWA to need a heat advisory even with highs on avg only in
the mid 90s. As airmass destabilizes more by Sat aftn early
evening, and as heights aloft drop, convection developing from
the NW will be more likely to hold together for at least 30-50%
pops across most areas (20% NE nc) from late Sat aftn through
sat night. Far N NE portions of the CWA are in a slight risk
where higher shear will reside with marginal risk for the
remainder of the cwa. Again wind will be the primary threat.

Lows mainly in the mid to upper 70s Sat night and continued hot
an humid with additional heat headlines likely needed for some
of the region on Sunday. Highs mainly in the mid to upper 90s
Sunday.

Long term Sunday night through Thursday
Long term period will feature near normal temps on avg and
occasional chances for rain. In general expect lwr temps than this
weekend as the broad upr-level ridge across the eastern CONUS breaks
down in response to an approaching upr-level trough. The trough and
associated low-level front will bring an increasing chance for rain
mon, but will cap pops at 40% for now due to uncertainties regarding
timing and available moisture. Further model divergence occurs tue
and wed, with the 12z ECMWF keeping the low-level boundary in the
vicinity and the 12z GFS pushing things offshore, so will maintain
low end pops (20-40%) through midweek, with the best chance over far
se areas. As for temps, after one more hot day Mon with highs up to
the mid 90s, expect mid upr 80s for Tue through thu.

Aviation 02z Friday through Tuesday
High pressure will prevail off the southeast coast tonight into
Friday, with a trough to the lee of the appalachians. This will
promote light SW flow of 5-10kt. Thin high clouds tonight, with
sct aftn CU Friday. Mainly dry with only a minimal chc (15-20%)
of showers tstms Friday aftn evening. Similar conditions persist
into Saturday with a 20-40% chc (highest n) of late aftn evening
showers tstms. A low probability of late aftn evening
showers tstms continues Sunday Monday, but overall primarily
dry. A weak cold front approaches from the NW Tuesday.

Marine
Extended period of sub-sca conditions continues this week into the
weekend. Pattern is stagnant with bermuda high pres centered well
offshore and typical summertime late day thermal troughs with S sw
winds averaging 5-10 kt, occasionally up to 15 kt especially tonight
due to a slight increase in the pressure gradient. Waves over the
bay 1-2 ft with seas over coastal wtrs 2-3 ft. The next (weakening)
cold front approaches the region late mon, dropping into the area
mon night tue. Mainly sub-sca conditions expected to continue
however with weak CAA behind the front, and just some 4-5 ft seas
psbl out 20 nm. Flow becomes N nely then Tue through Thu as the frnt
slides offshore and dissipates.

Climate
Heatwave is expected to develop, mainly Friday through Sunday.

The 2nd half of july is climatologically the hottest few weeks
of the year so we still may not set any daily records at our
main climate sites. For reference, record highs today through
Sunday are listed below:
* date: today(7 20) fri(7 21) sat(7 22) sun(7 23)
* ric: 103 1930 104 1930 103 1952 103 1952
* orf: 102 1942 101 1926 102 2011 103 2011
* sby: 104 1930 106 1930 104 1930 103 2011
* ecg: 104 1942 102 1987 104 1952 104 1952

Akq watches warnings advisories
Md... Heat advisory from 10 am to 8 pm edt Friday for mdz021>024.

Nc... Heat advisory from 10 am to 8 pm edt Friday for ncz012>017-
030>032.

Va... Heat advisory from 10 am to 8 pm edt Friday for vaz048-061-062-
064-068-069-075>078-080>090-092-093-095>100-509>525.

Marine... None.

Synopsis... Lkb tmg
near term... Lkb ajz
short term... Lkb tmg
long term... Mas
aviation... Ajz
marine... Mas mam
climate... Akq


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WDSV2 - 8638614 - Willoughby Deguassing , VA 3 mi47 min SSW 16 G 19 83°F 1014.7 hPa (+0.6)
SWPV2 - 8638610 - Sewells Point, VA 4 mi47 min 82°F1015 hPa (+0.8)
CRYV2 - 8638595 - South Craney Island, VA 6 mi47 min SSW 8.9 G 13 83°F 1014.8 hPa (+0.8)
CBBV2 - 8638863 - Chesapeake Bay Bridge Tunnel, VA 8 mi47 min SSW 13 G 15 82°F 80°F1014.7 hPa (+0.6)
DOMV2 - 8638511 - Dominion Terminal Association, VA 9 mi47 min SSW 12 G 16 83°F 1014.9 hPa (+0.8)
44064 10 mi37 min 9.7 G 12 82°F 1 ft1014.7 hPa
MNPV2 - 8639348 - Money Point, VA 13 mi47 min SW 4.1 G 6 80°F 82°F1015 hPa (+1.0)
CHYV2 - 8638999 - Cape Henry, VA 14 mi47 min SSW 8 G 11 82°F
44072 17 mi37 min SW 14 G 18 85°F 1 ft
KPTV2 - 8632200 - Kiptopeke, VA 20 mi47 min S 7 G 8 79°F
YKRV2 - 8637611 - York River East Rear Range Light, VA 21 mi47 min SW 15 G 17 85°F 1014.8 hPa (+0.6)
YKTV2 - 8637689 - Yorktown, VA 22 mi47 min SSW 8.9 G 12 84°F 83°F1014.3 hPa (+0.7)
44099 - Cape Henry, VA (147) 29 mi47 min 74°F2 ft
44041 - Jamestown, VA 33 mi37 min SW 12 G 14
YRSV2 - Chesapeake Bay,VA 39 mi77 min Calm 83°F 1015 hPa73°F
RPLV2 - 8632837 - Rappahannock Light, VA 42 mi47 min SSW 13 G 16 1015.1 hPa (+0.5)
44058 - Stingray Point, VA 42 mi37 min WSW 14 G 16 85°F 1 ft1014.4 hPa

Wind History for Rappahannock Light, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Norfolk, Norfolk International Airport, VA2 mi56 minSSW 810.00 miFair82°F73°F77%1014.9 hPa
Norfolk, Naval Air Station, VA6 mi1.8 hrsSSW 510.00 miMostly Cloudy84°F72°F67%1015.3 hPa
Virginia Beach, Oceana, Naval Air Station, VA10 mi51 minSSW 910.00 miMostly Cloudy81°F73°F77%1015.2 hPa
Langley Air Force Base, VA15 mi1.8 hrsS 1110.00 miFair84°F73°F71%1015.2 hPa
Chesapeake, Chesapeake Municipal Airport, VA19 mi52 minS 37.00 miFair76°F73°F90%1015.6 hPa
Newport News, Newport News / Williamsburg International Airport, VA23 mi53 minSSW 910.00 miFair83°F73°F72%1014.8 hPa

Wind History from ORF (wind in knots)
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Last 24hrSW10SW7SW6SW5SW5SW5SW6SW7SW445CalmW4NE3NE55N5SW8S8S8S6S6S6SW8
1 day agoSW6SW6SW7SW6SW5SW4SW5SW7W44W63NE7NE7E5S4SE8SE8S5S7S5S7S8SW9
2 days agoS5SW6SW7SW6S6--S4S5CalmCalmCalmN5NE7E10SW6SW5CalmCalmS5S5S5S4S4S5

Tide / Current Tables for Windmill Point, Rappahannock River, Virginia
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Windmill Point
Click for Map
Fri -- 04:01 AM EDT     0.13 feet Low Tide
Fri -- 04:06 AM EDT     Moonrise
Fri -- 06:00 AM EDT     Sunrise
Fri -- 09:30 AM EDT     1.36 feet High Tide
Fri -- 04:01 PM EDT     0.05 feet Low Tide
Fri -- 06:46 PM EDT     Moonset
Fri -- 08:22 PM EDT     Sunset
Fri -- 10:08 PM EDT     1.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.50.20.10.20.50.91.21.31.31.210.70.40.10.10.20.50.91.41.61.71.7

Tide / Current Tables for Sewells Point, Hampton Roads, Virginia
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Sewells Point
Click for Map
Fri -- 01:52 AM EDT     -0.07 feet Low Tide
Fri -- 04:08 AM EDT     Moonrise
Fri -- 06:02 AM EDT     Sunrise
Fri -- 07:49 AM EDT     2.55 feet High Tide
Fri -- 01:51 PM EDT     -0.24 feet Low Tide
Fri -- 06:44 PM EDT     Moonset
Fri -- 08:20 PM EDT     3.24 feet High Tide
Fri -- 08:20 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.1-0.10.20.71.422.42.52.31.81.10.4-0.1-0.200.61.42.32.93.23.22.72

Weather Map and Satellite Images
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Wind Forecast for Wakefield, VA (0,6,7,8)
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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.