Monday, September25, 2017

Marine Weather and Tides
Shady Side, MD

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:56AMSunset 6:58PM Monday September 25, 2017 1:08 PM EDT (17:08 UTC) Moonrise 11:03AMMoonset 9:29PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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- 1031 Am Edt Mon Sep 25 2017
Rest of today..E winds 5 to 10 kt. Waves 1 ft or less.
Tonight..NE winds 5 to 10 kt. Waves 1 ft.
Tue..NE winds 5 to 10 kt. Waves 1 ft.
Tue night..NE winds 5 to 10 kt. Waves 1 ft.
Wed..NE winds 10 kt. Waves 1 ft.
Wed night..N winds 5 to 10 kt. Waves 1 ft.
Thu..N winds 10 to 15 kt. Waves 2 ft.
Fri..NW winds 5 to 10 kt. Waves 1 ft.
ANZ500 1031 Am Edt Mon Sep 25 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A ridge of high pressure will remain over the waters today, then weaken during the middle of the week as hurricane maria approaches north carolina. Small craft advisories may be needed Tuesday night through Wednesday night. A strong cold front will cross the region Thursday, with gales possible. Refer to the latest statements from the national hurricane center for up-to-date information on hurricane maria.

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 251412 aaa
area forecast discussion... Updated
national weather service baltimore md washington dc
1012 am edt Mon sep 25 2017

High pressure will remain in place today, then slowly weaken
its grip over the area Tuesday and Wednesday as hurricane maria
moves northward through the western atlantic. A cold front will
move through Thursday, bringing more seasonable temperatures for
the end of the week. Little if any rain is expected.

Near term through tonight
Ridge of high pressure will continue to hold over the region
today, but it will begin to weaken. No precip is expected as a
result. Highs again today around 90f similar to yesterday.

Previous afd...

tonight, the influence of maria will increase somewhat as it
continues moving north and approaches the outer banks. Northeast
flow will increase, but remain in the 10-15 mph range overall.

This may allow moisture to move in from the atlantic, so there
maybe some more patchy fog or low clouds. Otherwise, another
mild night, with lows mostly in the 60s.

Short term Tuesday through Wednesday night
Maria will push northward and then stall just east of the outer
banks Tuesday and Wednesday before getting kicked out to sea by
an approaching trough cold front during the long term period. It
will stay far enough away such that influence on our region will
be minimal, with just an increased northeast breeze, perhaps
reaching 25 mph in gusts in far S md, and slightly cooler temps
thanks to increased clouds and a chance of a few showers with
highest chance near the bay. Highs will cool slightly, but
remain well above normal with 80s continued. Lows at night still
in the 60s.

Long term Thursday through Sunday
There's really not much prospect for appreciable precip through
the weekend. The region will remain ensconced by high pressure,
with a dry cold front Thursday and an upper-level trough
Saturday the only exceptions. The guidance has trended quicker
and flatter with the Saturday trough, which lowers the chance
for widespread precipitation, though an increase in clouds and a
few scattered showers are still plausible.

Gusty winds are likely both Thursday behind the dry frontal
passage and again Saturday with the trough axis. Although it
will be noticeably breezy, wind gusts in both periods should
remain well below any headline criteria over land.

Aviation 14z Monday through Friday
Vfr generally expected through Wednesday. Patchy fog possible
which could result in reduced vis at mrb, cho and perhaps even
iad, though odds at the latter are lower. Fog possible again
tomorrow night, though odds reduced as surface winds will begin
to increase as maria gets a little closer. Maria unlikely to
produce much effect on local weather other than a northeast to
north breeze perhaps gusting to 20 knots Tuesday and Wednesday,
and perhaps a stray shower.

MainlyVFR expected to end the week. Gusty N winds Thu behind
frontal passage, becoming lighter fri.

Winds sub SCA today as high pressure lingers. Winds will start
to increase tonight into Tuesday as maria approaches nc from the
se. Wind field will be expanding, so issued SCA for our
southernmost bay zones, but looks marginal to be sure. Sca
likely to continue through Wednesday, mainly our southernmost
bay zones though. Otherwise, no more than a stray shower
expected from maria.

Solid SCA conditions likely in northerly surge behind a cold
frontal passage Thursday. Gales possible.

Tides coastal flooding
Anomalies have receded significantly for the time being, but
will gradually increase as maria brushes nc and heads out to
sea. The threat for (minor) flooding will likely return by
Tuesday afternoon and linger into early Thursday.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 10 am to 6 pm edt Tuesday for anz534-

Update... Lfr
products... Rcm dfh

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 3 mi69 min WNW 1.9 G 1.9 76°F 77°F
44063 - Annapolis 7 mi39 min Calm G 0 80°F 1016.4 hPa
APAM2 - 8575512 - Annapolis, MD 9 mi51 min 82°F 1016.8 hPa
CPVM2 10 mi51 min 78°F 66°F
BSLM2 - Chesapeake Bay, MD 14 mi159 min N 1 73°F 1018 hPa64°F
44043 - Patapsco, MD 21 mi39 min N 1.9 G 1.9 78°F 1018.5 hPa
44062 - Gooses Reef, MD 21 mi39 min N 5.8 G 7.8 77°F 1017.8 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi51 min SE 5.1 G 5.1 78°F 1017.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 27 mi51 min NNW 5.1 G 6 77°F 76°F1017.8 hPa
BLTM2 - 8574680 - Baltimore, MD 29 mi51 min S 2.9 G 5.1 82°F 79°F1017 hPa
CA2 - 8571892 - Cambridge, MD 29 mi51 min 83°F 78°F1018 hPa
WASD2 - 8594900 - Washington, DC 30 mi51 min SSW 1.9 G 6 85°F 77°F1017.2 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 32 mi51 min N 8.9 G 9.9 76°F 1017.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 37 mi51 min SE 1.9 G 2.9 77°F 77°F1016.5 hPa
NCDV2 48 mi51 min SE 4.1 G 5.1 80°F 78°F1016.4 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD8 mi15 minSE 410.00 miFair85°F71°F63%1017.3 hPa
Bay Bridge Field, MD11 mi29 minNNW 77.00 miFair82°F66°F58%1017.3 hPa
Easton / Newman Field, MD21 mi24 minENE 710.00 miClear86°F64°F49%1018.3 hPa
Camp Springs / Andrews Air Force Base, MD22 mi71 minENE 410.00 miFair83°F65°F55%1018.1 hPa
Fort Meade / Tipton, MD23 mi24 minNNW 410.00 mi84°F66°F55%1017.9 hPa

Wind History from ESN (wind in knots)
Last 24hrE7E7E5E6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4NE5E5NE3NE7
1 day agoNW9NE8NE8N6NW6CalmCalmCalm--CalmCalmCalmCalmCalmCalmCalmCalmNE4NE4NE5NE5NE5NE5N4
2 days agoN7NW6N7N9

Tide / Current Tables for Shady Side, West River, Maryland
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Shady Side
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Mon -- 03:54 AM EDT     0.62 feet Low Tide
Mon -- 06:56 AM EDT     Sunrise
Mon -- 08:41 AM EDT     1.10 feet High Tide
Mon -- 12:02 PM EDT     Moonrise
Mon -- 02:52 PM EDT     0.34 feet Low Tide
Mon -- 06:57 PM EDT     Sunset
Mon -- 09:32 PM EDT     1.44 feet High Tide
Mon -- 10:28 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
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Mon -- 12:30 AM EDT     -0.00 knots Slack
Mon -- 03:40 AM EDT     -0.84 knots Max Ebb
Mon -- 06:56 AM EDT     Sunrise
Mon -- 07:07 AM EDT     0.00 knots Slack
Mon -- 09:46 AM EDT     0.53 knots Max Flood
Mon -- 12:02 PM EDT     Moonrise
Mon -- 12:31 PM EDT     -0.00 knots Slack
Mon -- 03:32 PM EDT     -0.61 knots Max Ebb
Mon -- 06:22 PM EDT     0.00 knots Slack
Mon -- 06:57 PM EDT     Sunset
Mon -- 09:54 PM EDT     0.89 knots Max Flood
Mon -- 10:27 PM EDT     Moonset
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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Baltimore, MD/Washington (13,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 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 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.