Saturday, May26, 2018 L-36.com


Marine Weather and Tides
Dundalk, MD

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:42AMSunset 8:24PM Saturday May 26, 2018 12:20 AM EDT (04:20 UTC) Moonrise 4:30PMMoonset 3:19AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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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ANZ538 Patapsco River Including Baltimore Harbor- 1031 Pm Edt Fri May 25 2018
Rest of tonight..S winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Sat night..SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers and tstms.
Sun..SW winds 5 kt. Waves flat. Showers and tstms likely.
Sun night..E winds around 5 kt. Waves 1 ft or less. Showers likely with a chance of tstms.
Mon..SE winds around 5 kt. Waves flat. A chance of showers and tstms.
Mon night..SW winds around 5 kt. Waves flat.
Tue..E winds around 5 kt. Waves 1 ft or less.
Wed..SE winds 5 to 10 kt. Waves 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1031 Pm Edt Fri May 25 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain offshore through the weekend. A cold front will push south through the area early next week.

7 Day Forecast for Marine Location Near Dundalk, MD
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location: 39.25, -76.47     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 260134 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
934 pm edt Fri may 25 2018

Synopsis
High pressure will linger offshore of the north carolina coast
through the weekend. A trough of low pressure and several weak
disturbances will move over the region during the weekend into early
next week. A low pressure system may approach from the south
during the middle of next week.

Near term through Saturday
Low level moisture has made a return into the area as seen in
sfc dewpoints in the mid 60s and in the sfc-850 advected layered
precipitable water product (alpw), but remains very dry abv 700
mb per 00z iad sounding and the three goes-16 WV channels. This
kept convection very spotty across the region today. IR and
lightning trends show convection waning as it moves east of
i-81. A few showers will remain possible overnight mainly over
the appalachian region.

Moisture will continue to increase tomorrow around western
periphery on southwesterly flow. While there will be a definite
incresae in convective coverage sat, Sun appears to be more
active day due to increased sfc convergence along a slow moving
cdfnt dropping south.

Short term Saturday night through Sunday night
The weekend will become unsettled with the potential for slow-moving
thunderstorms to develop and bring locally heavy rainfall ahead of
and then along a slow-moving cold front and associated upper level
energy. Not all locations will encounter these thunderstorms as
coverage will not be as crucial as intensity, but those locations
receiving one of these thunderstorms could encounter very heavy rain
in a short period of time, lightning, and a brief wind gust over 40
mph. Precipitable water values approaching 1.8 to 1.9 inches
indicates a lot of moisture to work with should one of these
thunderstorms feed off of this moisture. Recent antecedent
conditions of a wet ground from several inches of rain during the
last week or so will leave us on our toes at heavy rainfall with
thunderstorms each afternoon. We should remain cognizant of the
potential for flooding in any heavier thunderstorms. Wind shear
generally 20 to 25 knots indicates that perhaps wind won't be a huge
factor Saturday and Sunday; however, downbursts of rain-cooled air
could pose a threat in the stronger thunderstorms. A few showers or
a thunderstorm could linger later into the evening hours each day as
weak energy pulses push eastward from the ohio valley.

Long term Monday through Friday
A warm front is forecast to be to our north over eastern pa and
northeastern md. The 12z GFS model has backed off on pwat values
over maryland and northern virginia on Monday. Pwat's are forecast
to be in the 1.3 to 1.6 inch range. GFS and NAM have decreased the
chances for showers on Monday. Everything suggest that there would
likely only be a chance of showers on Monday with thinning cloud
cover. Tuesday a cold front will approach from the west and move
through the region. Scattered showers and thunderstorms will be
possible. Temperatures are expected to be in the upper 70s to mid
80s on Monday and then jump up into the upper 80s to low 90s on
Tuesday.

A high pressure system will build into the region on Wednesday from
the northwest. A southerly 850mb flow will advect in moist tropical
air into the region leading to rise dew points and precipitable
water values. The increased moisture is being fueled by the flow
from the gulf and a possible tropical storm moving into the
mississippi louisiana area. Increasing moisture in the region will
lead to the chance for unsettled weather in the form of showers and
storms Wednesday through Thursday. The exact path and timing of the
tropical storm is unknown and will likely play a major part in what
kind of weather we will experience late next week.

Aviation 01z Saturday through Wednesday
Vfr conditions through tonight as high pressure lingers offshore.

Although clouds will be increasing during the next 12 to 18 hours,
there could be some patches of fog in a few places in the shenandoah
valley or virginia piedmont. A southerly flow of around 10 knots or
less expected at all terminals through tonight.

Vfr conditions again for all terminals during the weekend. A warm
and humid airmass combined with weak disturbances and a weak cold
front will lead to the potential of showers and thunderstorms
Saturday and Sunday, favored during the afternoon and early evening.

Impacts will likely be brief, with heavy rain the main threat. Fog
could occur overnight in locations that receive rain if skies clear.

On Monday, skies will remain mostly cloudy with some thinning cloud
layers as we move later in the day. Scattered showers will be
possibles with winds of 5 to 15 knots out of the south to southwest.

Tuesday, a frontal boundary will move through from the west leading
to showers and thunderstorms.

Marine
Cancelled SCA for tonight. Winds are currently 15 kt or less and
model trends show winds remaining steady overnight into sat.

Better chance for SCA late Sat night into Sun morning.

Tides coastal flooding
No concerns at this time.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Lfr
near term... Lfr
short term... Klw
long term... Jmg
aviation... Lfr jmg
marine... Lfr jmg
tides coastal flooding... Lfr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 4 mi50 min S 8.9 G 12 77°F 1012.2 hPa
FSNM2 4 mi50 min SSW 9.9 G 14 77°F 1012.2 hPa
BLTM2 - 8574680 - Baltimore, MD 6 mi50 min SSW 1.9 G 2.9 77°F 75°F1012 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 12 mi50 min S 8 G 12 76°F 74°F1012.7 hPa
CPVM2 18 mi50 min 73°F 70°F
APAM2 - 8575512 - Annapolis, MD 18 mi50 min 74°F 1012.3 hPa
44063 - Annapolis 19 mi40 min SSW 12 G 14 73°F 1013 hPa
TPLM2 - Thomas Point, MD 24 mi80 min S 14 G 15 73°F 69°F1013.7 hPa (+0.0)69°F
BSLM2 - Chesapeake Bay, MD 35 mi110 min SSE 4.1 73°F 1013 hPa68°F
WASD2 - 8594900 - Washington, DC 39 mi50 min S 5.1 G 8.9 76°F 71°F1012.7 hPa
CHCM2 - 8573927 - Chesapeake City, MD 40 mi50 min SSW 5.1 G 7 74°F 73°F1012.5 hPa
44062 - Gooses Reef, MD 48 mi40 min S 9.7 G 9.7 74°F 1013.6 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore / Martin, MD7 mi44 minSSE 610.00 miFair73°F71°F94%1012.9 hPa
Baltimore, Inner Harbor, MD8 mi26 minno data mi79°F66°F65%1012.2 hPa
Baltimore, Baltimore-Washington International Airport, MD11 mi26 minSSW 310.00 miPartly Cloudy75°F66°F74%1011.8 hPa
Fort Meade / Tipton, MD19 mi44 minSSW 410.00 miFair68°F64°F88%1013.2 hPa
Annapolis, United States Naval Academy, MD19 mi26 minS 510.00 miFair76°F66°F74%1012.6 hPa
Bay Bridge Field, MD20 mi45 minS 77.00 miFair75°F66°F74%1012.9 hPa

Wind History from MTN (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmSW5S4S5S7S8S10SE12SE13SE13SE11SE11SE11S9--S7SE6SE6
1 day agoCalmCalmCalmCalmNW5CalmNW6CalmNW4NW10N10N9E4SE7SE7SE6SE6SE6SE4S3CalmCalmCalmCalm
2 days agoCalmNW5CalmCalmS3S5CalmCalmNW7NW8
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NW3CalmCalmCalmCalm

Tide / Current Tables for Fort Carroll, Patapsco River, Maryland
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Fort Carroll
Click for Map
Sat -- 04:18 AM EDT     Moonset
Sat -- 05:11 AM EDT     1.81 feet High Tide
Sat -- 05:44 AM EDT     Sunrise
Sat -- 12:19 PM EDT     0.42 feet Low Tide
Sat -- 05:20 PM EDT     1.31 feet High Tide
Sat -- 05:30 PM EDT     Moonrise
Sat -- 08:22 PM EDT     Sunset
Sat -- 11:42 PM EDT     0.32 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.611.41.71.81.81.61.31.10.80.60.40.50.60.91.21.31.31.10.90.70.50.4

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Sat -- 03:27 AM EDT     1.11 knots Max Flood
Sat -- 04:18 AM EDT     Moonset
Sat -- 05:44 AM EDT     Sunrise
Sat -- 06:54 AM EDT     -0.00 knots Slack
Sat -- 10:02 AM EDT     -0.94 knots Max Ebb
Sat -- 01:28 PM EDT     0.00 knots Slack
Sat -- 04:02 PM EDT     0.58 knots Max Flood
Sat -- 05:29 PM EDT     Moonrise
Sat -- 06:40 PM EDT     -0.00 knots Slack
Sat -- 08:20 PM EDT     Sunset
Sat -- 09:48 PM EDT     -0.78 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.50.91.11.10.80.4-0-0.5-0.8-0.9-0.8-0.6-0.20.20.50.60.50.2-0.1-0.5-0.7-0.8-0.6

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.
target = "new">Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (0,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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.