Sunday, August25, 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 6:30AMSunset 7:51PM Sunday August 25, 2019 1:36 AM EDT (05:36 UTC) Moonrise 12:07AMMoonset 3:05PM Illumination 28% Phase: Waning Crescent; Moon at 24 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- 1035 Pm Edt Sat Aug 24 2019
Rest of tonight..N winds 5 kt. Waves less than 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.
Mon night..E winds 5 kt. Waves less than 1 ft.
Tue..E winds 5 kt. Waves less than 1 ft. A chance of showers.
Tue night..SE winds 5 kt. Waves less than 1 ft. A chance of showers.
Wed..NW winds around 5 kt. Waves 1 ft. A chance of tstms. A chance of showers.
Thu..NW winds around 5 kt. Waves 1 ft or less. A chance of showers in the morning. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1035 Pm Edt Sat Aug 24 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will settle north of the waters this weekend. Low pressure off the florida coast will likely move northward offshore of the eastern seaboard early next week. A cold front will approach the waters in the middle of the week. Small craft advisories may be needed Sunday night into early next week.


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 250059
afdlwx
area forecast discussion
national weather service baltimore md washington dc
859 pm edt Sat aug 24 2019

Synopsis
Strong high pressure will build north of the region through
early next week. A tropical cyclone could form over the weekend
and move near the southeast coast and out to sea. A cold front
will cross the region on Wednesday.

Near term through Sunday
Patches of cloud cover are likely tonight in onshore flow around
high pressure situated to our north. Where and when conditions
clear, patchy fog will likely develop. Below normal temperatures
in the 50s and 60s are expected.

Short term Sunday night through Monday night
Ridge of high pressure will remain in control along the eastern
seaboard on Sunday with northeasterly flow continuing. A mix of
sun and clouds is anticipated again with fair weather cumulus
developing through the day. Once again an isolated shower or two
is possible, mainly near the bay. Highs will be similar to
today, in the 70s to near 80f. Lows Sunday night in the 50s 60s.

Surface high pressure will be positioned near coastal maine by
Monday with an area of low pressure southeast of the carolinas.

This will help to turn low level flow more easterly, which will
promote more of a marine influence. That in combination with
an upper trough moving towards the area from the mississippi
valley may act to bring more cloud cover in addition to the
possibility of some isolated to scattered showers. Highs Monday
will likely remain in the 70s. Lows Monday night in the 60s.

Long term Tuesday through Saturday
High pressure will start to weaken and shift off to our
northeast on Tuesday. A cold front will slowly approach our
region from the west. The models have this cold front moving
through our region some time on Wednesday Wednesday evening. A
coastal low tropical system will move northward offshore of
the atlantic coast. The system should remain well off-shore with
little sensible impact to the region aside from promoting mostly
easterly flow Tuesday into Wednesday. The easterly flow will
lead to increasing moisture in our region with temperatures
both Tuesday and Wednesday in the mid 80s. Showers and
thunderstorms could be possible as the frontal boundary moves
through our area Wednesday afternoon and evening.

The cold front is expected to be fully through our our region
by Thursday morning. High pressure will build back into our
region from the west through Friday. Daytime temperatures will
average in the mid 80s with dew points in the 50s.

Aviation 01z Sunday through Thursday
Patchy fog possible especially near mrb cho later tonight.

WidespreadVFR will return on Sunday. Winds will be generally
northeasterly through Sunday.

Vfr is likely Monday as well, although easterly flow may promote
thicker cloud cover and some isolated to scattered showers. MVFR
conditions are therefore possible at some locations Monday and
Monday night.

An increasingly easterly flow will lead to broken to overcast
skies Tuesday and Wednesday. Some clouds bases could reach
sub-vfr condtions especially as a cold front approaches on
Wednesday.

Marine
Sca is in effect for the lower tidal potomac and central
chesapeake bay this evening, overnight, and through Sunday.

Additional small craft advisories may be needed for the marine
zones Sunday night and Monday as a pressure gradient is
maintained between the high pressure to the north and northeast
and the developing coastal low pressure system near the
southeast u.S.

Winds will be mostly out of the east Tuesday through Wednesday.

Marginal winds near SCA criteria will be possible.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 6 am to 6 pm edt Sunday for anz532-
533-540>542.

Small craft advisory until 6 pm edt Sunday for anz534-537-543.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 20 mi48 min NNE 1.9 G 4.1 70°F 82°F1022.9 hPa
NCDV2 22 mi54 min N 1.9 G 4.1 69°F 84°F1021.7 hPa
BSLM2 - Chesapeake Bay, MD 28 mi126 min NW 1 64°F 1023 hPa62°F
44062 - Gooses Reef, MD 42 mi84 min E 12 G 14 73°F 1023.4 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi48 min ENE 11 G 13 72°F 81°F1022.1 hPa
TPLM2 - Thomas Point, MD 45 mi36 min ENE 9.9 G 12 72°F 80°F1023.7 hPa (+0.0)56°F
APAM2 - 8575512 - Annapolis, MD 46 mi48 min 73°F 1022.3 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 46 mi48 min E 9.9 G 14 71°F 1023.2 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi48 min ENE 7 G 11

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Belvoir, VA8 mi3.7 hrsN 010.00 miOvercast63°F58°F83%1022.9 hPa
Quantico Marine Corps Airfield - Turner Field, VA9 mi2.7 hrsENE 1110.00 miPartly Cloudy74°F57°F56%1023 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA18 mi4.7 hrsNNE 410.00 miOvercast69°F55°F61%1022.8 hPa
Washington/Reagan National Airport, DC, VA19 mi3.7 hrsENE 610.00 miPartly Cloudy71°F57°F61%1022.8 hPa
Stafford, Stafford Regional Airport, VA20 mi81 minN 010.00 miFair59°F58°F100%1024 hPa
Camp Springs / Andrews Air Force Base, MD23 mi2.7 hrsNE 510.00 miA Few Clouds65°F56°F74%1023.2 hPa

Link to 5 minute data for KDAA

Wind History from DAA (wind in knots)
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Last 24hrNW4CalmCalmNW3CalmNW3N3N3CalmCalmNE4CalmN4NW4CalmNE3CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmN3N4NW5N6N4NW5NW4CalmNW8NW7NW6CalmCalmCalmNW4NW4NW5
2 days ago--------3CalmCalmCalmW5NW7W7W4--W6S7
G14
------S3SW7SW5S3S3Calm

Tide / Current Tables for High Point, Occoquan Bay, Virginia
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High Point
Click for Map
Sun -- 01:07 AM EDT     Moonrise
Sun -- 02:23 AM EDT     1.82 feet High Tide
Sun -- 06:31 AM EDT     Sunrise
Sun -- 09:40 AM EDT     0.39 feet Low Tide
Sun -- 03:15 PM EDT     1.53 feet High Tide
Sun -- 04:05 PM EDT     Moonset
Sun -- 07:49 PM EDT     Sunset
Sun -- 09:14 PM EDT     0.31 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.71.81.81.61.310.70.50.40.40.50.81.21.41.51.51.310.70.40.30.30.5

Tide / Current Tables for Marshall Hall, Potomac River, Maryland
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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.
Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (1,6,7,8)
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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.