Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
St. George Island, MD

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:49AMSunset 7:14PM Tuesday September 17, 2019 4:37 PM EDT (20:37 UTC) Moonrise 8:16PMMoonset 8:49AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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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ANZ537 Tidal Potomac From Cobb Island To Smith Point- 136 Pm Edt Tue Sep 17 2019
.small craft advisory in effect through Thursday morning...
This afternoon..NE winds 10 kt. Waves 2 ft.
Tonight..NE winds 5 to 10 kt with gusts to 20 kt. Waves 2 ft.
Wed..NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Wed night..NE winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
Thu..NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
Thu night..NE winds 5 to 10 kt. Waves 1 ft.
Fri..SW winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft.
ANZ500 136 Pm Edt Tue Sep 17 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure to the north will build over the waters through the end of the week before settling to the south this weekend. Small craft advisories may be required for portions of the waters Thursday morning before the gradient finally slackens.


7 Day Forecast for Marine Location Near St. George Island CDP, MD
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location: 38.04, -76.5     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 171844
afdlwx
area forecast discussion
national weather service baltimore md washington dc
244 pm edt Tue sep 17 2019

Synopsis
A cold front to our south will push into the southeastern u.S.

Through tonight as canadian high pressure builds to our north.

This high will dominate over the northeast and mid-atlantic
region for the balance of the work week, promoting dry
conditions and cooler than normal temperatures. The high will
settle to our south this weekend.

Near term through tonight
Sprawling high pressure is centered north of the great lakes
over quebec today as a cold front continues to drift southward
through the carolinas. Locally, cloud cover is slowly eroding
from northeast to southwest, with the greatest concentration of
clouds holding on over central virginia, the shenandoah valley,
and the virginia highlands. Isolated shower activity is being
detected across central virginia as well, and high resolution
guidance in good consensus with this activity diminishing over
the next few hours as clouds erode and drier air works its way
into the area. Temperatures this afternoon will top out in the
middle 70s to lower 80s.

As drier air makes its way into the region, skies will continue
clearing overnight. With winds trending lighter, optimal
radiational cooling conditions will emerge, allowing
temperatures to drop into the 50s for much of the area outside
of the city centers where around 60 degree readings will exist.

Patchy fog will be possible in the favored mountain valley
locations.

Short term Wednesday through Thursday night
High pressure building into new england will dominate the
weather features the next couple of days, resulting in dry
conditions and cooler than normal temperatures under a east
northeast flow. Temperatures Wednesday through Thursday will
rise into the 70s under plentiful sunshine while falling back
into the 50s at night. Patchy fog will remain possible in the
predawn hours in the sheltered valleys and rural locations.

Long term Friday through Tuesday
High pressure will be in control over the region at the sfc and
aloft Fri through Sun maintaining very warm and dry weather. Temps
will be on the rise Sat through Mon as mid-upper level ridge remains
strong. The ridge pattern begins to break down Sun night as a
positively tilted trof moves across james bay and displaces the
ridge axis offshore. Associated (weak) cold front is fcst to cross
the area Mon night and may provide enough lift for a few showers,
although we wouldn't be talking much in terms of precip amounts
anyway. Trough axis crosses the area Tuesday with more dry fair
weather for the middle of next week. While temps will likely cool
off a bit after the frontal passage tue, they are still expected to
run above normal in the mid to upper 80s. While the tropical
atlantic is expected to remain active through the end of sep, td#10
(next storm name imelda) is not expected to be a concern to the u.S.

Mainland through at least early next week.

Aviation 18z Tuesday through Sunday
MVFR CIGS will remain at cho until this evening with clearing
skies expected thereafter, whileVFR conditions have returned to
all other terminals under northeasterly breezes at less than 10
knots. High pressure north of the terminals will build over the
region through weeks end with a light easterly flow prevailing.

As such, dry conditions and cooler temperatures will result in
vfr conditions persisting.

Vfr conditions Fri through Sat with no sig wx.

Marine
In the wake of the frontal passage overnight and building high
pressure to our north, the gradient will remain strong enough
for SCA conditions to persist over portions of the waters
through Wednesday night. After which, the gradient will relax as
the high slides southward from new england and sub sca
conditions return to the waters Thursday afternoon and evening.

Winds 10kt or less over the waters Fri through sun.

Tides coastal flooding
Onshore flow through Thursday will promote rising tidal
anomalies, resulting in the threat for minor tidal flooding.

Currently, no active advisories warnings in place but that will
likely change Wednesday and into Thursday as anomalies continue
to increase.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 11 am Wednesday to 8 am edt Thursday
for anz533-541-542.

Small craft advisory until 8 am edt Thursday for anz534-537-
543.

Synopsis... Bkf
near term... Bkf
short term... Bkf
long term... Lfr
aviation... Bkf lfr
marine... Bkf lfr
tides coastal flooding... Bkf


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LWTV2 - 8635750 - Lewisetta, VA 4 mi55 min ENE 7 G 8.9 1018.1 hPa
PPTM2 - 8578240 - Piney Point, MD 7 mi49 min E 6 G 8.9
44042 - Potomac, MD 9 mi31 min NE 12 G 14 75°F 78°F1020.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 20 mi49 min NNE 8 G 12 76°F 78°F1017.9 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 26 mi49 min NE 9.9 G 13 75°F 1019 hPa
BISM2 - 8571421 - Bishops Head, MD 27 mi55 min ENE 9.9 G 13 1018.6 hPa
NCDV2 34 mi55 min ENE 2.9 G 6 1017.6 hPa
44058 - Stingray Point, VA 35 mi37 min NNE 16 G 18 75°F 78°F2 ft1020.8 hPa
44062 - Gooses Reef, MD 36 mi37 min NE 7.8 G 9.7 75°F 1 ft1019.4 hPa
CA2 - 8571892 - Cambridge, MD 43 mi55 min ENE 12 G 14 75°F 78°F1018.5 hPa
RPLV2 - 8632837 - Rappahannock Light, VA 43 mi49 min ENE 16 G 18 1018.6 hPa
YRSV2 - Chesapeake Bay,VA 45 mi67 min ENE 1.9 76°F 1019 hPa66°F

Wind History for Lewisetta, VA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD8 mi44 minNE 610.00 miOvercast80°F61°F52%1017.7 hPa
Patuxent River, Naval Air Station, MD18 mi45 minNE 910.00 miOvercast78°F60°F54%1018.1 hPa
St Marys County Airport, MD19 mi54 minENE 3 miOvercast77°F60°F57%1019 hPa
Tappahannock-Essex County Airport, VA24 mi42 minENE 810.00 miPartly Cloudy78°F62°F58%1018.3 hPa

Link to 5 minute data for KNUI

Wind History from NUI (wind in knots)
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Last 24hrE7SE5SE5SE5SE4S3CalmCalmE3CalmCalmN3CalmNE3E8E6NE11NE7
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1 day agoE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3CalmCalmCalmCalmW43SW55SE7CalmE7
2 days agoS6SE7SE5S7S7S3S3SE3S5S6S6S6SW7S3CalmW3SW3SW4W4CalmCalmCalmSW3SW4

Tide / Current Tables for Lynch Point, Yeocomico River, Virginia
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
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Point Patience
Click for MapFlood direction 315 true
Ebb direction 145 true

Tue -- 12:14 AM EDT     0.00 knots Slack
Tue -- 02:01 AM EDT     0.39 knots Max Flood
Tue -- 04:20 AM EDT     -0.00 knots Slack
Tue -- 06:49 AM EDT     Sunrise
Tue -- 08:11 AM EDT     -0.72 knots Max Ebb
Tue -- 09:49 AM EDT     Moonset
Tue -- 12:03 PM EDT     0.00 knots Slack
Tue -- 02:18 PM EDT     0.52 knots Max Flood
Tue -- 05:03 PM EDT     -0.00 knots Slack
Tue -- 07:11 PM EDT     Sunset
Tue -- 08:54 PM EDT     -0.77 knots Max Ebb
Tue -- 09:15 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.10.20.40.30.1-0.2-0.4-0.6-0.7-0.7-0.5-0.3-00.30.50.50.30-0.3-0.6-0.7-0.8-0.7-0.5

Weather Map
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wmap_A
GEOS 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (16,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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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.