Friday, August23, 2019 L-36.com


Marine Weather and Tides
Port Tobacco Village, MD

Version 3.4
NOTICE
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 6:29AMSunset 7:54PM Friday August 23, 2019 10:20 AM EDT (14:20 UTC) Moonrise 11:24PMMoonset 12:59PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 838 Am Edt Fri Aug 23 2019
Today..N winds 5 to 10 kt. Waves 1 ft. Numerous showers with a slight chance of tstms early this morning, then widespread showers and numerous tstms this afternoon.
Tonight..N winds 5 to 10 kt. Waves 1 ft. Scattered showers.
Sat..NE winds 5 to 10 kt. Waves 1 ft.
Sat night..NE winds 5 to 10 kt. Waves 1 ft.
Sun..NE winds 5 to 10 kt. Waves 1 ft.
Sun night..NE winds 5 to 10 kt. Waves 1 ft.
Mon..NE winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Tue..S winds around 5 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 838 Am Edt Fri Aug 23 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will stall over the carolinas Saturday. High pressure will then settle over the area Saturday into Sunday. Small craft advisories are possible over the waters Saturday night through Monday.


7 Day Forecast for Marine Location Near Port Tobacco Village, MD
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location: 38.44, -77.11     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 231404
afdlwx
area forecast discussion
national weather service baltimore md washington dc
1004 am edt Fri aug 23 2019

Synopsis
A cold front will cross the area today and move
into the southern mid-atlantic and southeast states this
weekend. Strong high pressure will build north of the region
tonight and settle over northern new england and atlantic canada
through early next week. A tropical depression could form over
the weekend as it moves near the southeast coast.

Near term through tonight
Initial wind shift has crossed through the region, although
based on temperature dew point analysis, cold front is still
slowly progressing southward and is located roughly from near
luray eastward to warrenton, then northeastward to near
annapolis. Slow movement southward is expected to continue
through the day today. A surface wave is positioned along the
boundary across central WV and this will move eastward along the
front into the afternoon hours and be positioned near the
southern DELMARVA by this evening. Widespread rain showers are
expected across the region, and some heavier rain is possible
just to the north of the surface low this afternoon as is
currently being observed across central west virginia. Ahead of
the front and surface low, enough instability will likely still
be present this afternoon for some scattered thunderstorms, and
an isolated severe thunderstorm is possible. The risk for this
mainly exists across nelson and albemarle counties, possibly as
far north as spotsylvania and st. Mary's counties.

Temperatures will be considerably cooler, with mainly locations
north of the front already reaching their highs for the day
overnight. Afternoon temperatures likely holding form the upper
60s to the mid 70s in and NW of the metros, with low 80s
se.

Rain showers will end from NW to SE late today and this evening
with drier air filtering in overnight. Lows tonight in the
50s 60s.

Short term Saturday through Sunday night
High pressure will build north of the region tonight and hold
strong through early next week. It should be pleasant and mainly
dry, but areas along the lower chesapeake bay may still have a
slight risk of a shower or two due to onshore flow.

Long term Monday through Thursday
For the most part, high pressure will be in control of the weather
and provide dry and slightly cooler conditions Monday through
Tuesday. An onshore flow from the western atlantic could spawn a few
showers or a thunderstorm, mainly Tuesday and across the potomac
highlands.

The high pressure will move to the northeast Tuesday night and
Wednesday. A cold front will approach the region from the west.

Ahead of the front, the warmth and humidity will return due to a
developing and persistent southerly flow. A chance for additional
showers and thunderstorms will be present, especially Wednesday
afternoon and evening.

The cold front is expected to push to the southeast and move
offshore the east coast Thursday. A cooler dome of high pressure
will build behind the front from the upper midwest and great lakes
region. Cooler and drier air will ensue with this high.

Aviation 14z Friday through Tuesday
MVFR CIGS with showers expected for a majority of the day across
the TAF sites. Localized heavier rain with reduced visibilities
are also likely. A few stronger thunderstorms are possible near
cho this afternoon. Conditions will improve tonight.

Vfr conditions for all terminals Monday through Tuesday night. Any
isolated shower or thunderstorm could briefly bring conditions to
MVFR and probably would be mainly near mrb or cho Tuesday.

Winds northeast 5 to 10 knots Monday, then variable Monday night.

Winds southeast around 5 knots Tuesday and Tuesday night.

Marine
Northerly winds will increase as a front moves southward across
the waters and a SCA is in effect across portions of the lower
tidal potomac and chesapeake bay through this evening. In
addition, some smws may be required for the far southern waters
this afternoon as scattered thunderstorms are possible.

Improving weather tonight as cold front pushes south, but
additional northerly flow will create SCA conditions later
tonight into Saturday. Will also need to monitor northerly
channeling and potential TC passing offshore early or mid next
week for increasing winds and possible scas.

No marine hazards expected Monday through Tuesday night. Winds
northeast 10 knots Monday, then light and variable Monday night.

Winds becoming southeast 10 knots Tuesday and Tuesday night.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory until 1 pm edt this afternoon for anz530-
531-538-539.

Small craft advisory from 3 am to 6 am edt Saturday for
anz531>534-537-539>541-543.

Small craft advisory from 1 pm this afternoon to 10 pm edt
this evening for anz534-537-542-543.

Small craft advisory until 6 pm edt this evening for anz532-
533-540-541.

Synopsis... Lfr
near term... Mm lfr
short term... Lfr
long term... Klw
aviation... Mm lfr klw
marine... Mm lfr klw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 9 mi50 min N 5.1 G 8 87°F1014.2 hPa
WASD2 - 8594900 - Washington, DC 30 mi50 min N 7 G 8.9 77°F 85°F1015.9 hPa
BSLM2 - Chesapeake Bay, MD 32 mi110 min NNW 2.9 75°F 1015 hPa72°F
SLIM2 - 8577330 - Solomons Island, MD 36 mi50 min N 6 G 9.9 83°F1014.5 hPa
PPTM2 - 8578240 - Piney Point, MD 37 mi50 min NE 5.1 G 7
44062 - Gooses Reef, MD 38 mi44 min NE 14 G 18 78°F 1015.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 39 mi50 min N 8 G 9.9 77°F 1015.5 hPa
LWTV2 - 8635750 - Lewisetta, VA 46 mi50 min N 2.9 G 4.1 83°F1014.9 hPa
TPLM2 - Thomas Point, MD 48 mi20 min N 16 G 19 75°F 82°F1016.3 hPa (+1.0)71°F

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Quantico Marine Corps Airfield - Turner Field, VA11 mi2.4 hrsNW 410.00 miPartly Cloudy73°F71°F94%1015.5 hPa
Stafford, Stafford Regional Airport, VA19 mi1.8 hrsN 510.00 miFair77°F75°F95%1016.6 hPa
Fort Belvoir, VA20 mi2.4 hrsN 010.00 miFair76°F71°F86%1015.4 hPa
Fredericksburg, Shannon Airport, VA22 mi1.8 hrsN 310.00 miFair76°F72°F89%1014.9 hPa

Link to 5 minute data for KNYG

Wind History from NYG (wind in knots)
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Last 24hrS6S7NE5SE5S8S9S10S6S9W10SW5SW5----W3SW4W8----NW3CalmNW4--NE11
1 day agoS11S10S14S14S11S13SE13S13SW11SW4W3W5W3NW4NW6--W3--CalmW6W5CalmS6S4
2 days agoE4SE3SW6S7S6S7--SE16
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SW143SW10------------SW4SW4W4----S9

Tide / Current Tables for Goose Bay, Port Tobacco River, Maryland
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Goose Bay
Click for Map
Fri -- 03:53 AM EDT     0.39 feet Low Tide
Fri -- 06:29 AM EDT     Sunrise
Fri -- 09:47 AM EDT     1.49 feet High Tide
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 01:58 PM EDT     Moonset
Fri -- 03:38 PM EDT     0.26 feet Low Tide
Fri -- 07:51 PM EDT     Sunset
Fri -- 10:04 PM EDT     1.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.80.60.40.40.40.611.31.51.51.41.10.80.50.30.30.40.60.91.41.61.71.7

Tide / Current Tables for Maryland Point Light, Maryland
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Maryland Point Light
Click for Map
Fri -- 05:16 AM EDT     0.30 feet Low Tide
Fri -- 06:30 AM EDT     Sunrise
Fri -- 10:55 AM EDT     1.11 feet High Tide
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 01:59 PM EDT     Moonset
Fri -- 05:01 PM EDT     0.20 feet Low Tide
Fri -- 07:52 PM EDT     Sunset
Fri -- 11:12 PM EDT     1.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.90.70.50.40.30.30.40.70.91.11.11.10.90.70.40.30.20.20.40.611.21.3

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (10,2,3,4)
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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.