Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Basye, 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 6:27AMSunset 8:00PM Sunday April 22, 2018 2:10 PM EDT (18:10 UTC) Moonrise 11:14AMMoonset 1:01AM Illumination 49% Phase: First Quarter Moon; Moon at 7 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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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 133 Pm Edt Sun Apr 22 2018
This afternoon..SE winds 10 kt. Waves 1 ft.
Tonight..SE winds 5 to 10 kt. Waves 1 ft.
Mon..SE winds 10 to 15 kt. Waves 1 ft.
Mon night..SE winds 5 to 10 kt. Waves 1 ft. Rain likely.
Tue..E winds 5 to 10 kt. Waves 1 ft. Rain.
Tue night..E winds 5 to 10 kt. Waves 1 ft. Rain.
Wed..NW winds 5 kt. Waves less than 1 ft. Rain in the morning, then showers likely through the night. A chance of showers after midnight.
Thu..SW winds around 5 kt. Waves 1 ft. A chance of showers in the morning.
ANZ500 133 Pm Edt Sun Apr 22 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain centered over the great lakes region through tonight before moving off the new england coast Monday. An area of low pressure over the deep south will approach the region mid week. Small craft advisories may be needed Tuesday.

7 Day Forecast for Marine Location Near Basye, VA
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location: 38.81, -78.79     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 221434
afdlwx
area forecast discussion
national weather service baltimore md washington dc
1034 am edt Sun apr 22 2018

Synopsis
High pressure over the great lakes will slowly move east into
the northeast u.S. By tonight. This high will move offshore
Monday. A low pressure system will bring unsettled weather to
the region Monday night through the middle of the week.

Near term through tonight
Surface high pressure will continue to dominate the day today
with dry conditions, light northeast to southeast winds, and
temperatures approaching normal for this time in april. More
middle level clouds will move in across the region this
afternoon as a weak upper level disturbance slides across us
from northwest to southeast. We can't rule out a sprinkle or a
brief shower, but for the most part, dry conditions should
prevail. High temperatures today will reach the lower to middle
60s. A couple of degrees cooler over the ridge tops of the
potomac highlands and the blue ridge mountains.

A weak ridge of upper level high pressure will build back into
the region tonight after the weak disturbance departs to the
southeast. Dry conditions with clouds breaking and low
temperatures dropping down into the 40s will be anticipated.

Winds will remain light from the southeast.

Short term Monday through Tuesday night
High pressure will move off of the east coast Monday as a cut-
off low pressure system moves up the east coast from the
southeast u.S. Winds will persist out of the southeast ahead of
the low pressure system. Clouds will thicken through the day
Monday. Highs will again be generally in the 60s, with cooler
readings in west-central va where rain may arrive in the
afternoon, while warmer readings towards the metro. Rain is
likely to spread across the region by late Monday night as the
system to the southwest closes in.

As the cut-off low and a couple of pieces of upper level energy
move into the mid-atlantic region Tuesday, additional rounds of
light to moderate rain will develop and overspread most of the
region. This rain should gradually taper to showers Tuesday
night and may end from southwest to northeast. However, the
ending time may be delayed as the next upper level disturbance
will be quick on the heels of the Monday night and Tuesday low
pressure system. Temperatures will be about 5 to 10 degrees
cooler Tuesday due to cloud cover and rainfall and about 5 to 10
degrees milder Tuesday night due to the same two factors.

Long term Wednesday through Saturday
Lingering shower activity will be ongoing Wednesday morning as
low pressure resides on the eastern periphery of our cwa, likely
in the vicinity of the DELMARVA peninsula. This area of low
pressure will also be receiving lift and support from the mid to
upper level troughing overhead, and associated shortwave energy
heading toward the new england states. There should be a
downward trend in rain coverage during the daytime hours on
Wednesday before another shortwave quickly on the heels of the
aforementioned features helps enhance additional shower activity
Wednesday evening. Highs and lows Wed wed night will remain
below normal thanks to ample cloud cover and shower activity,
reaching the low to middle 60s during the day and upper 40s to
near 50 at night.

More of a drying trend is looking likely on Thursday as we will
see weak surface high pressure build in to the region and along
with weak upper level ridging overhead and our area remains in
between the exiting system over new england and the next low
pressure shortwave digging across the upper midwest. Continued
slightly below normal temperatures expected Thursday and
Thursday night, maybe a touch cooler than Wednesday with a light
northwest flow and weak brief cold air advection aloft early
Thursday.

Surface low pressure and an associated upper level cut-off low
will swing across the great lakes region Thursday night. There
is a good deal of global model discrepancy at this time on the
strength and timing of this feature. Operational GFS trending
more progressive and stronger, while the operational ECMWF is
slower and weaker. Regardless, ensembles do agree upon a broad
mid to upper level trough winning out once again over the mid
atlantic and northeast through the first half of the weekend.

Will maintain chance pops the latter half of Friday into
Saturday for much of the area with near normal temperatures for
late april.

Aviation 15z Sunday through Thursday
Vfr conditions expected through Monday with light and variable
winds, becoming southeast 5 to 10 knots tonight. Winds
southeast around 10 knots Monday and Monday night. MVFR
conditions are possible at the cho terminal Monday night with
some light rain approaching from the southwest.

MVFR conditions possible at all terminals Tuesday and Tuesday
night due to light to moderate rain. Winds east 10 to 15 knots
Tuesday becoming northeast 5 to 10 knots Tuesday night.

Periodic MVFR ifr conditions expected Wednesday and Wednesday
night with an unsettled weather pattern bringing increased rain
chances to the terminals. Light northerly winds of 10 knots or
less are anticipated. A return toVFR flying conditions forecast
Thursday into Thursday night as weak high pressure builds over
the area, and winds remain light at less than 10 knots out of
the west northwest.

Marine
No marine hazards expected through Monday morning. Winds will
be light and variable, becoming southeast around 10 knots this
afternoon and tonight. Winds southeast 10 to 15 knots Monday.

Small craft advisory starts Monday afternoon through Monday
night for the middle bay and lower potomac, and likely to expand
northward Tuesday and Tuesday night. Winds southeast becoming
east 10 to 15 knots with gusts 20 knots Monday afternoon
through Monday night, with gusts perhaps approaching 30 knots
Tuesday. Winds becoming northeast 10 to 15 knots gusts to 20
knots Tuesday night.

Sub SCA conditions forecast over the waters Wednesday and
Wednesday night as low pressure crosses the DELMARVA and exits
to the northeast. Marginal SCA gusts possible Thursday morning
in the wake of the exiting low pressure system, but weak high
pressure is expected to build over the waters the second half of
Thursday and into Thursday night, delivering lighter winds.

Tides coastal flooding
As low pressure approaches the waters from the southeastern
u.S. Late Monday into Tuesday, a persistent onshore flow will
develop. This will yield increasing tidal anomalies, and the
possibility of coastal flooding toward the middle part of the
work week.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 1 pm Monday to 6 am edt Tuesday for
anz534-537-543.

Synopsis... Klw rcm
near term... Klw rcm
short term... Klw rcm
long term... Bkf
aviation... Bkf klw rcm
marine... Bkf klw rcm
tides coastal flooding... Bkf


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 94 mi41 min ESE 6 G 9.9 63°F 54°F1028.2 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, Grant County Airport, WV22 mi41 minW 510.00 miPartly Cloudy61°F34°F37%1026.4 hPa

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Last 24hrCalmN5S3CalmS6S4S6N8NW16
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CalmN6N3NE3N3CalmN5N8
1 day agoN3Calm----CalmCalmCalmCalmCalmSW5CalmE4CalmCalmCalmS4CalmCalmCalmCalmCalmSE6CalmCalm
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Tide / Current Tables for Fredericksburg, Rappahannock River, Virginia
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Fredericksburg
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Sun -- 12:54 AM EDT     3.06 feet High Tide
Sun -- 01:53 AM EDT     Moonset
Sun -- 06:24 AM EDT     Sunrise
Sun -- 07:45 AM EDT     0.39 feet Low Tide
Sun -- 12:09 PM EDT     Moonrise
Sun -- 01:04 PM EDT     3.38 feet High Tide
Sun -- 05:46 PM EDT     First Quarter
Sun -- 07:52 PM EDT     Sunset
Sun -- 08:42 PM EDT     0.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.93.12.82.41.81.20.80.50.40.71.52.53.23.43.22.82.21.61.10.70.40.30.71.6

Tide / Current Tables for Aquia Creek, Virginia
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Aquia Creek
Click for Map
Sun -- 01:53 AM EDT     Moonset
Sun -- 06:02 AM EDT     0.09 feet Low Tide
Sun -- 06:23 AM EDT     Sunrise
Sun -- 11:57 AM EDT     1.32 feet High Tide
Sun -- 12:08 PM EDT     Moonrise
Sun -- 05:46 PM EDT     First Quarter
Sun -- 06:49 PM EDT     -0.01 feet Low Tide
Sun -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.80.60.50.30.20.10.20.50.91.11.31.31.210.70.50.30.1-00.20.40.70.9

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 Baltimore, MD/Washington (14,3,4,5)
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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.