Wednesday, May23, 2018 L-36.com


Marine Weather and Tides
Fredericksburg, VA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 5:50AMSunset 8:22PM Wednesday May 23, 2018 8:32 PM EDT (00:32 UTC) Moonrise 1:26PMMoonset 1:47AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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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ANZ536 Tidal Potomac From Indian Head To Cobb Island- 732 Pm Edt Wed May 23 2018
Tonight..NW winds 5 to 10 kt. Waves 1 ft or less.
Thu..NE winds 5 kt. Waves less than 1 ft.
Thu night..S winds around 5 kt. Waves 1 ft.
Fri..SW winds 5 to 10 kt. Waves 1 ft.
Fri night..S winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sat night..SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Sun..SW winds 5 kt. Waves less than 1 ft. A chance of tstms. A chance of showers.
Mon..W winds around 5 kt. Waves 1 ft. Tstms likely. Showers likely. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 732 Pm Edt Wed May 23 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the great lakes will build over the mid-atlantic through the end of the week, then move offshore this weekend. Low pressure may approach the area from the south early next week. Small craft advisories may be needed late Friday into the weekend.

7 Day Forecast for Marine Location Near Fredericksburg, VA
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location: 38.3, -77.45     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 232211
afdlwx
area forecast discussion
national weather service baltimore md washington dc
611 pm edt Wed may 23 2018

Synopsis
High pressure will build into the region from the northwest
late this afternoon through Thursday night. This high should move
offshore Friday. Moisture will increase ahead of a low pressure
system over the weekend into early next week.

Near term until 6 am Thursday morning
A shower in spots across southern maryland, the central
chesapeake bay, or parts of the virginia piedmont is possible as
the cold front pushes across these areas later this afternoon.

A rumble of thunder cannot be ruled out. Any activity should be
very isolated and brief. High temperatures will be in the lower
to middle 80s for most locations.

High pressure will build in from the northwest tonight. Dry
conditions with mainly scattered mid-level clouds expected tonight.

Low temperatures will drop down into the upper 50s to near 60 over
the eastern half of our region, while lows should reach the lower
50s over the western half of our region.

Short term 6 am Thursday morning through Friday night
The center of high pressure will move overhead later in the day
Thursday into Thursday night before moving offshore Friday. In the
meantime, we can enjoy dry conditions Thursday into Friday.

As we get into late Friday and Friday night and looking out west
into the potomac highlands, we could encounter a shower or
two; otherwise, dry conditions for all.

Dewpoint temperatures will be in the lower 50s Thursday versus the
lower 60s that we experienced this afternoon. This should make
conditions a little more comfortable. Temperatures both Thursday and
Friday will reach the lower to middle 80s with increasing humidity
expected Friday around the back side of the area of high pressure.

Low temperatures Thursday night expected to be in the middle 50s to
upper 50s.

Long term Saturday through Wednesday
Saturday into Sunday, a high pressure system will be located off the
atlantic coast near bermuda. This will lead to a south to
southwesterly flow which will work to funnel tropical moisture
into the region. Temperatures rising up into the mid to upper
80s on Saturday and Sunday coupled with tropical moisture could
lead to the formation of convective showers and thunderstorms
which may produce heavy showers.

Monday through Tuesday, a weak boundary will approach from the west.

A south to southwesterly flow will continue the flow of tropical
moisture into the region. High temperatures will be in the low to
mid 80s on Monday. The approaching frontal boundary on Monday will
act as a convergence zone which may allow for some forcing to cause
the formation of storms and showers. The combination of tropical
moisture and the boundary will lead to a chance for thunderstorms
and showers on Monday.

Aviation 22z Wednesday through Monday
Vfr conditions late this afternoon through Friday night. Winds
have become northwesterly and gusting over 20 knots at times behind
the cold front at all terminals, except for cho, where winds are
generally still light out of the north. Expect winds to diminish
tonight as high pressure builds in over the region.

Saturday, the combination of tropical moisture and rising
temperatures up into the mid 80s will lead to an environment that
could be conducive for the formation of disorganize thunderstorms
and heavy showers.

Marine
Have allowed the small craft advisory to drop as scheduled at 6
pm. A few lingering gusts are possible but should quickly wane
within the hour.

High pressure will build across the waters tonight and Thursday
before moving offshore on Friday with light winds. Some of the
wider waters of the bay may come close to SCA criteria Friday
night as southerly flow increases on the back side of the high.

Over the weekend, winds will be out of the south which may lead
to the need for a small craft advisory. Chances for showers will
increase as high pressure shifts into the western atlantic.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Klw
near term... Klw
short term... Klw
long term... Jmg
aviation... Klw jmg
marine... Klw dhof jmg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 22 mi51 min N 5.1 G 8.9 77°F 77°F1016.2 hPa
WASD2 - 8594900 - Washington, DC 46 mi45 min NNW 6 G 12 79°F 68°F1017.3 hPa
PPTM2 - 8578240 - Piney Point, MD 50 mi45 min NNE 8.9 G 8.9
BSLM2 - Chesapeake Bay, MD 51 mi123 min N 1.9 78°F 1016 hPa60°F

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fredericksburg, Shannon Airport, VA2 mi58 minN 910.00 miFair79°F60°F53%1016.9 hPa
Stafford, Stafford Regional Airport, VA7 mi38 minN 010.00 miFair75°F58°F57%1018.6 hPa
Quantico Marine Corps Airfield - Turner Field, VA17 mi37 minN 910.00 miFair77°F59°F54%1017.6 hPa
Warrenton-Fauquier Airport, VA24 mi58 minN 610.00 miFair76°F53°F45%1017.6 hPa

Wind History from EZF (wind in knots)
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Last 24hrSE3CalmS8S8SW8SW9SW7SW3CalmCalmCalmCalmN3N7NW6
G14
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N4CalmN8N6N9
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1 day agoSE7SE6S6S3CalmCalmSE3SE3CalmSE3CalmS4S5S4SW6S9S9SW6S6S7S5CalmE4S7
2 days agoCalmCalmW3CalmN4NW3CalmCalmNE3CalmNE4NE8E6NE6NE3NE4E3E5E4SE4SE6E7E6SE6

Tide / Current Tables for Fredericksburg, Rappahannock River, Virginia
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Fredericksburg
Click for Map
Wed -- 02:47 AM EDT     Moonset
Wed -- 02:48 AM EDT     3.25 feet High Tide
Wed -- 05:52 AM EDT     Sunrise
Wed -- 09:45 AM EDT     0.32 feet Low Tide
Wed -- 02:26 PM EDT     Moonrise
Wed -- 03:10 PM EDT     3.19 feet High Tide
Wed -- 08:20 PM EDT     Sunset
Wed -- 10:14 PM EDT     0.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.73.13.232.51.91.30.80.40.30.71.62.42.93.23.12.621.50.90.50.20.3

Tide / Current Tables for Aquia Creek, Virginia
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Aquia Creek
Click for Map
Wed -- 01:27 AM EDT     1.25 feet High Tide
Wed -- 02:46 AM EDT     Moonset
Wed -- 05:51 AM EDT     Sunrise
Wed -- 07:50 AM EDT     0.14 feet Low Tide
Wed -- 01:45 PM EDT     1.24 feet High Tide
Wed -- 02:25 PM EDT     Moonrise
Wed -- 08:15 PM EDT     0.01 feet Low Tide
Wed -- 08:20 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.21.21.10.90.70.50.20.10.30.60.811.21.21.10.90.70.50.200.10.40.6

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.
target = "new">Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (20,4,5,8)
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Ground Weather Radar Station Sterling, 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.