Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Glassmanor, 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 6:22AMSunset 8:02PM Saturday August 17, 2019 1:03 PM EDT (17:03 UTC) Moonrise 8:28PMMoonset 7:09AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 1036 Am Edt Sat Aug 17 2019
Rest of today..SE winds 5 kt. Waves less than 1 ft. Isolated showers late this morning, then isolated showers and tstms this afternoon.
Tonight..S winds 5 kt. Waves less than 1 ft.
Sun..S winds around 5 kt. Waves 1 ft.
Sun night..S winds around 5 kt. Waves 1 ft.
Mon..SW winds around 5 kt. Waves 1 ft.
Mon night..SW winds around 5 kt. Waves 1 ft.
Tue..SW winds around 5 kt. Waves 1 ft. A chance of showers and tstms through the night. A chance of showers after midnight.
Wed..SW winds 5 kt. Waves less than 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1036 Am Edt Sat Aug 17 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the atlantic will control the weather pattern through Monday. A trough will build near the waters for Tuesday and Wednesday.


7 Day Forecast for Marine Location Near Glassmanor, MD
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location: 38.83, -77     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 171414 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
1014 am edt Sat aug 17 2019

Synopsis
An upper-level ridge will build overhead through Monday, with
surface high pressure in the atlantic. Hot and humid conditions
will persist during this time. The upper-level ridge will
gradually weaken Tuesday and Wednesday before a cold front
passes through Thursday. High pressure will return for late next
week, bringing noticeably cooler and less humid conditions.

Near term through tonight
Heights aloft will continue to rise with temperatures
trending upward. Scattered showers are expected over
northeast md and the blue ridge mts where differential heating
boundaries are noted with isold coverage elsewhere. Otherwise,
hot and humid with temperatures in the 90s approaching 100f in a
few places.

Short term Sunday through Monday night
The heat and humidity continue to rise Sunday and Monday as
southerly flow persists around the high over the western atlantic.

Temperatures will increase a touch each day, with low to middle
90s being observed. This will result in heat indices cracking
the century mark, in the low 100s and currently forecast just
under heat advisory criteria. Will have to monitor this the next
couple of days should dewpoints temps run a touch higher than
currently forecast.

A little strong shortwave swings across the area Sunday, so have
increased pops slightly over nne maryland, with scattered showers
and thunderstorms possible Sunday afternoon and evening. Another
shot of showers and thunderstorms will exist Monday
afternoon evening as well, but with even weaker lift aloft, the
main trigger will be left to terrain circulations. As such
will favor along and west of the blue ridge for scattered
showers and thunderstorms, diminishing overnight Monday.

Long term Tuesday through Friday
The upper-level ridge will gradually break down Tuesday through
Wednesday as an upper-level trough digs over the great lakes.

Surface high pressure will remain over the atlantic during this
time. Therefore, hot and humid conditions will persist and with
lower heights in place, this will increase the chances for
showers and thunderstorms. Some storms may be strong to perhaps
even severe due to high amounts of instability from the hot and
humid conditions. However, confidence remains low this far out.

The upper-level trough will continue to dig south and east into
the northeast CONUS as well as the mid-atlantic. The cold front
associated with this system is also likely to pass through
during this time, bringing chances for more showers and
thunderstorms.

High pressure behind the front is expected to build overhead
for Friday, bringing noticeably cooler and less humid
conditions.

Aviation 14z Saturday through Wednesday
MVFR ifr vis CIGS are plausible at the terminals the next few
mornings as a warm and moist airmass lingers over the region.

Afternoon evening showers and storms could yield episodes of sub
vfr conditions, but coverage is expected to be too isold for
taf inclusion at this time. With high pressure situated over the
western atlantic, a light southerly flow will prevail through
Monday.

High pressure will remain over the atlantic, but an upper-level
trough will build overhead. This will increase the chances for
showers and thunderstorms each day, especially during the
afternoon and evening hours.

Marine
High pressure over the western atlantic will deliver a light
southerly flow over the waters, thus SCA conditions not expected
through Monday. Gusty showers storms are possible each
afternoon evening, however much of the time is expected to
remain dry.

High pressure will remain over the atlantic for Tuesday and
Wednesday, causing a south to southwest flow over the waters.

Winds may come close to SCA criteria at times due to southerly
channeling.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Lfr
near term... Lfr
short term... Bkf
long term... Bjl
aviation... Bjl lfr
marine... Bjl lfr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 3 mi51 min S 2.9 G 4.1 86°F 83°F1016 hPa
BSLM2 - Chesapeake Bay, MD 16 mi153 min ENE 1.9 83°F 1016 hPa76°F
APAM2 - 8575512 - Annapolis, MD 30 mi45 min 82°F 1015.7 hPa
TPLM2 - Thomas Point, MD 30 mi63 min ESE 2.9 G 4.1 80°F 82°F1017.5 hPa (+0.6)76°F
CPVM2 34 mi51 min 82°F 81°F
NCDV2 35 mi51 min ESE 7 G 8 83°F 89°F1015.4 hPa
44062 - Gooses Reef, MD 36 mi27 min NNE 3.9 G 3.9 80°F 1017.3 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 37 mi45 min SE 8 G 8.9 80°F 1016.1 hPa
FSNM2 37 mi57 min SE 7 G 9.9 80°F 1016.2 hPa
BLTM2 - 8574680 - Baltimore, MD 38 mi51 min S 5.1 G 8 82°F 82°F1015.6 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 44 mi45 min N 6 G 7 81°F 1017.1 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi45 min E 5.1 G 5.1 81°F 83°F1016 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 48 mi51 min W 6 G 8.9 81°F 82°F1016.5 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Washington/Reagan National Airport, DC, VA3 mi72 minSSE 510.00 miMostly Cloudy87°F73°F63%1016.3 hPa
Camp Springs / Andrews Air Force Base, MD7 mi2.1 hrsESE 310.00 miMostly Cloudy85°F73°F70%1017 hPa
College Park Airport, MD11 mi81 minN 010.00 miPartly Cloudy84°F68°F59%1016.6 hPa
Fort Belvoir, VA12 mi2.1 hrsN 010.00 miA Few Clouds85°F73°F67%1016.5 hPa
Fort Meade / Tipton, MD22 mi82 minW 310.00 miPartly Cloudy86°F73°F66%1017.3 hPa

Link to 5 minute data for KDCA

Wind History from DCA (wind in knots)
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Last 24hrSE3CalmCalmS7S7S9S8S5S5CalmSE4S6SE4CalmCalmSE4CalmCalmCalmS4S4S4S5S6
1 day agoE5SE8E9CalmSE7SE5E3SE8SE10SE6E5E4S4E3CalmNE3NE6NE6E4NE5SE6CalmCalm3
2 days agoNW15
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N13N9N8NE6E4E4SE3E4CalmNE3CalmE6E5NE4E8E7E7E5E5E8NE8NE5E6

Tide / Current Tables for Reagan National Airport, Washington, D.C.
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Reagan National Airport
Click for Map
Sat -- 04:38 AM EDT     0.47 feet Low Tide
Sat -- 06:23 AM EDT     Sunrise
Sat -- 08:09 AM EDT     Moonset
Sat -- 10:21 AM EDT     3.37 feet High Tide
Sat -- 05:06 PM EDT     0.38 feet Low Tide
Sat -- 08:00 PM EDT     Sunset
Sat -- 09:27 PM EDT     Moonrise
Sat -- 10:46 PM EDT     3.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.91.30.80.50.50.91.72.53.13.33.32.82.21.510.60.40.61.222.73.13.2

Tide / Current Tables for Key Bridge, D.C.
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Key Bridge
Click for Map
Sat -- 04:46 AM EDT     0.44 feet Low Tide
Sat -- 06:23 AM EDT     Sunrise
Sat -- 08:09 AM EDT     Moonset
Sat -- 10:30 AM EDT     3.25 feet High Tide
Sat -- 05:14 PM EDT     0.36 feet Low Tide
Sat -- 08:00 PM EDT     Sunset
Sat -- 09:27 PM EDT     Moonrise
Sat -- 10:55 PM EDT     3.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.91.30.80.50.40.81.52.32.93.23.22.82.21.510.60.40.511.92.633.1

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (13,3,4,5)
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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.