Monday, August19, 2019 L-36.com


Marine Weather and Tides
Shady Side, 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 6:21AMSunset 7:57PM Monday August 19, 2019 11:03 AM EDT (15:03 UTC) Moonrise 9:18PMMoonset 9:00AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 1035 Am Edt Mon Aug 19 2019
Rest of today..S winds 5 to 10 kt. Waves 1 ft. Isolated showers and tstms late this morning, then scattered showers and tstms this afternoon.
Tonight..W winds 5 to 10 kt. Waves 1 ft.
Tue..E winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Tue night..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Wed..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Wed night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Thu..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1035 Am Edt Mon Aug 19 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the atlantic will deliver a light southerly flow over the region through Tuesday. A cold front will approach the waters Wednesday into Thursday. Small craft advisories may be needed for portions of the waters Wednesday.


7 Day Forecast for Marine Location Near Shady Side, MD
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location: 38.86, -76.46     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 191353 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
953 am edt Mon aug 19 2019

Synopsis
A weak surface boundary will linger over the area through the
middle of the week. Southerly flow will continue to usher in hot
and humid conditions into the region during this time. A cold
front will sweep through the area during the second half of the
week, with canadian high pressure building in for the weekend.

Near term through tonight
Continued hot and humid conditions this afternoon with high
temperatures in the middle 90s and heat indices between 100-104.

As for convection, the nssl-wrf arw has been doing an excellent
job the past few days depicting the mode and where convection
has occurred. For today, it shows convection developing east of
the blue ridge mtns south of i-66 and tracking east toward the
potomac river and southern md. The 12z iad sounding showed
decent 0-6km shear of 32kt with a speed MAX of 35kt at 500 mb
which is double the amount of shear there was yesterday. Cape
should be plentiful with middle 90s and 70f dewpoints. Expect
a few more severe storms today than the past couple of days.

Aviation 14z Monday through Friday
Episodes of subVFR conditions possible each afternoon and
evening through Wednesday in passing showers and thunderstorms,
some of which could be strong to severe. Patchy fog will also
yield reduced vsby's (MVFR ifr) during the early morning hours,
especially near the terminals that receive rainfall the day
prior. Outside of convection, winds will be light and south
southwesterly through Wednesday.

Thursday will feature a higher risk of thunderstorms compared to
Friday thanks to a passing cold front, but the risk will
continue Friday if the front stalls.

Marine
Sub SCA conditions expected through the first half of Wednesday
as light southerly flow prevails. Thereafter, southerly flow
increases as a cold front approaches from the northwest, with
sca gusts possible late Wednesday afternoon and overnight.

Showers and thunderstorms will also be possible each afternoon
and evening, bringing the potential for strong gusty winds and
hail. Highest coverage of storms over the waters will be on
Tuesday and again on Wednesday.

Sca may continue Thursday as front approaches, but may abate
Friday, especially if the front stalls.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 3 mi64 min SSW 2.9 G 2.9 80°F 82°F1016.9 hPa (+0.5)77°F
APAM2 - 8575512 - Annapolis, MD 9 mi46 min 83°F 1015.5 hPa
CPVM2 10 mi52 min 84°F 80°F
BSLM2 - Chesapeake Bay, MD 14 mi154 min S 2.9 80°F 1016 hPa76°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi46 min Calm G 0 84°F 1016.1 hPa
FSNM2 25 mi58 min WSW 1 G 1.9 82°F 1016.1 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 27 mi52 min W 7 G 8 80°F 84°F1016.3 hPa
BLTM2 - 8574680 - Baltimore, MD 29 mi52 min SW 2.9 G 5.1 83°F 83°F1015.5 hPa
CA2 - 8571892 - Cambridge, MD 29 mi52 min S 6 G 8.9 87°F 84°F1015.7 hPa
WASD2 - 8594900 - Washington, DC 30 mi52 min NNW 2.9 G 5.1 85°F 84°F1016.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 32 mi46 min S 9.9 G 11 81°F 1016.4 hPa
SLIM2 - 8577330 - Solomons Island, MD 37 mi46 min S 2.9 G 2.9 87°F 84°F1015.5 hPa
NCDV2 48 mi52 min WSW 4.1 G 5.1 85°F 87°F1015.4 hPa

Wind History for Francis Scott Key Bridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD8 mi70 minWNW 510.00 miFair85°F73°F70%1016.1 hPa
Bay Bridge Field, MD11 mi84 minSW 510.00 miPartly Cloudy84°F75°F74%1015.9 hPa
Easton / Newman Field, MD21 mi74 minSSW 610.00 miPartly Cloudy88°F77°F70%1016.9 hPa
Camp Springs / Andrews Air Force Base, MD22 mi68 minW 510.00 miA Few Clouds85°F74°F71%1016.7 hPa
Fort Meade / Tipton, MD23 mi82 minWNW 310.00 miFair79°F73°F84%1016.9 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrSE8SE9SE9SE12S11S13
G19
SE10S9S4S7S4CalmW8--NW4--Calm----CalmS44N3NW5
1 day agoSE5SE7SE8SE8SE10SE7E3CalmCalmCalmSE4CalmS3S3S3S3Calm--S4CalmS3SW4--E5
2 days agoSE6SE5SE5SE3SE6--SE5SE6SE7SE6S4E4--------CalmCalm--CalmCalm3E5SE6

Tide / Current Tables for Thomas Point Shoal Light, Maryland
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Thomas Point Shoal Light
Click for Map
Mon -- 01:36 AM EDT     0.57 feet Low Tide
Mon -- 06:22 AM EDT     Sunrise
Mon -- 07:54 AM EDT     1.28 feet High Tide
Mon -- 10:00 AM EDT     Moonset
Mon -- 02:10 PM EDT     0.44 feet Low Tide
Mon -- 07:55 PM EDT     Sunset
Mon -- 08:42 PM EDT     1.22 feet High Tide
Mon -- 10:17 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.60.60.70.811.11.21.31.21.10.90.70.50.40.50.60.80.91.11.21.21.11

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Mon -- 02:33 AM EDT     -0.63 knots Max Ebb
Mon -- 05:26 AM EDT     0.00 knots Slack
Mon -- 06:22 AM EDT     Sunrise
Mon -- 08:34 AM EDT     0.72 knots Max Flood
Mon -- 10:00 AM EDT     Moonset
Mon -- 11:35 AM EDT     -0.00 knots Slack
Mon -- 02:51 PM EDT     -0.83 knots Max Ebb
Mon -- 06:06 PM EDT     0.00 knots Slack
Mon -- 07:55 PM EDT     Sunset
Mon -- 09:13 PM EDT     0.76 knots Max Flood
Mon -- 10:17 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.4-0.6-0.6-0.4-0.20.20.50.70.70.50.2-0.2-0.5-0.8-0.8-0.7-0.4-00.30.60.80.70.5

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 (11,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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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.