Friday, August23, 2019 L-36.com


Marine Weather and Tides
Indian Head, 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 9:53 AM EDT (13:53 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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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 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.
Tonight..N winds around 5 kt. Waves 1 ft.
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 through the night.
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 Indian Head, MD
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location: 38.62, -77.2     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 230800
afdlwx
area forecast discussion
national weather service baltimore md washington dc
400 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
Showers are expected today as cold front crosses the area and
intercepts a moisture-laden air mass. Across far southern
areas along the lwx akq cwas where the front will be slow to
clear this afternoon, there should be enough destabilization
to allow t-storms to develop. Enough shear and instability
appear present for a risk of a severe thunderstorm or two mainly
over southern st. Marys county and the lower potomac and
chesapeake bay waters. Front clears southern areas tonight with
showers gradually ending. Much cooler today with highs around
80.

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 08z Friday through Tuesday
MVFR CIGS with showers mainly this morning across northern
terminals and all day at kcho. Conditions improving 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
Smws may be required for the far southern waters this afternoon.

Improving weather tonight as cold front pushes south. Will 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... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 20 mi59 min NNE 5.1 G 8.9 76°F 85°F1015.8 hPa
NCDV2 22 mi59 min N 1 G 4.1 79°F 87°F1014 hPa
BSLM2 - Chesapeake Bay, MD 28 mi143 min Calm 72°F 1015 hPa71°F
44062 - Gooses Reef, MD 42 mi53 min NE 9.7 G 12 79°F 1015.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi59 min NNW 4.1 G 7 77°F 83°F1014.6 hPa
TPLM2 - Thomas Point, MD 45 mi53 min N 14 G 16 76°F 82°F1016.2 hPa (+1.2)71°F
APAM2 - 8575512 - Annapolis, MD 46 mi59 min 77°F 1015 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 46 mi59 min N 7 G 8.9 76°F 1015.5 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi59 min N 8.9 G 11

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA8 mi57 minN 310.00 miPartly Cloudy78°F70°F78%1015.8 hPa
Quantico Marine Corps Airfield - Turner Field, VA9 mi57 minNNE 910.00 miPartly Cloudy81°F70°F69%1015.4 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA18 mi57 minNNE 1210.00 miMostly Cloudy75°F69°F82%1016.1 hPa
Washington/Reagan National Airport, DC, VA19 mi61 minNNE 1210.00 miMostly Cloudy77°F69°F77%1015.8 hPa
Stafford, Stafford Regional Airport, VA20 mi58 minNNE 710.00 miFair78°F74°F88%1016.6 hPa
Camp Springs / Andrews Air Force Base, MD23 mi57 minN 1110.00 miMostly Cloudy76°F69°F82%1016 hPa

Link to 5 minute data for KDAA

Wind History from DAA (wind in knots)
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Last 24hrW5NW7W7W4--W6S7
G14
------S3SW7SW5S3S3CalmCalmCalmCalmCalmCalmCalmCalmN3
1 day agoS7S6--S8--S4
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--S7--S6SE6SE3CalmCalmCalmCalm--------3CalmCalmCalm
2 days agoCalmCalmS6S8SE6SE9SE3SE7E6S8W3CalmCalmSE3SE3Calm----SE3CalmCalmCalmW3S4

Tide / Current Tables for High Point, Occoquan Bay, Virginia
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High Point
Click for Map
Fri -- 12:29 AM EDT     1.80 feet High Tide
Fri -- 06:29 AM EDT     Sunrise
Fri -- 07:26 AM EDT     0.43 feet Low Tide
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 01:05 PM EDT     1.55 feet High Tide
Fri -- 01:59 PM EDT     Moonset
Fri -- 07:11 PM EDT     0.29 feet Low Tide
Fri -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.81.61.310.70.50.40.40.60.91.21.51.51.51.310.70.40.30.30.50.81.3

Tide / Current Tables for Marshall Hall, Maryland
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Marshall Hall
Click for Map
Fri -- 01:29 AM EDT     2.61 feet High Tide
Fri -- 06:29 AM EDT     Sunrise
Fri -- 08:04 AM EDT     0.60 feet Low Tide
Fri -- 10:58 AM EDT     Last Quarter
Fri -- 01:59 PM EDT     Moonset
Fri -- 02:05 PM EDT     2.25 feet High Tide
Fri -- 07:49 PM EDT     0.40 feet Low Tide
Fri -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.62.62.31.91.410.70.60.70.91.31.82.12.32.21.81.30.80.50.40.50.81.3

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 (9,2,3,4)
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Ground Weather Radar Station Sterling, 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.