Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Fallston, 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 6:25AMSunset 7:50PM Saturday August 24, 2019 5:06 PM EDT (21:06 UTC) Moonrise 12:00AMMoonset 2:02PM Illumination 32% 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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ANZ538 Patapsco River Including Baltimore Harbor- 435 Pm Edt Sat Aug 24 2019
Rest of this afternoon..E winds 5 kt. Waves less than 1 ft. A slight chance of showers.
Tonight..NE winds 5 to 10 kt. Waves 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 10 kt. Waves 1 ft.
Mon night..E winds 5 to 10 kt. Waves 1 ft.
Tue..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night.
Wed..NW winds around 5 kt. Waves 1 ft or less. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 435 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 Fallston, MD
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location: 39.5, -76.5     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 241836
afdlwx
area forecast discussion
national weather service baltimore md washington dc
236 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 tonight
A large dome of surface high pressure will continue to build
across eastern canada and the northeastern united states through
the remainder of today and tonight, while aloft an upper level
trough will rotate across the region. This will lead to
relatively dry north to northeasterly flow across the area
through the afternoon and evening hours. With the upper trough
overhead and surface warming occurring, a scattered to perhaps
broken cumulus deck of clouds has developed and will persist
through the afternoon and into the evening. An isolated shower
is also possible near the chesapeake bay where instability will
locally be higher due to warm water temperatures. Highs will
range from the upper 70s to near 80f.

Dry conditions and partly to mostly clear skies will continue
tonight as temperatures drop into the 50s 60s. The exception
will be the potomac highlands and locations near the allegheny
front where low clouds may develop after midnight. Some patchy
fog is possible as well.

Short term Sunday 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 18z Saturday through Thursday
Vfr conditions are expected for the remainder of the day with a
scattered to perhaps broken cumulus deck at about 4-6k feet.

Some patchy fog will be possible tonight with localized
reductions possible, mainly mrb cho. 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
A lull in the wind field is currently being observed across the
waters and sub-sca winds are forecast this afternoon. Winds
will then increase this evening and a 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 from 6 pm this evening to 6 pm edt Sunday
for anz534-537-543.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 17 mi72 min ENE 7 G 14 74°F 82°F1020.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 19 mi66 min NE 4.1 G 5.1 74°F 1021.2 hPa (-0.6)
FSNM2 19 mi72 min ENE 7 G 8.9 74°F 1021 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 24 mi72 min N 11 G 13 75°F 79°F1021.2 hPa
CPVM2 35 mi66 min 75°F 56°F
APAM2 - 8575512 - Annapolis, MD 36 mi66 min 76°F 1020.4 hPa (-0.7)
CHCM2 - 8573927 - Chesapeake City, MD 37 mi72 min E 1 G 5.1 76°F 84°F1021.2 hPa
TPLM2 - Thomas Point, MD 42 mi66 min N 8.9 G 9.9 74°F 81°F1021.8 hPa (-0.7)57°F
DELD1 - 8551762 - Delaware City, DE 49 mi72 min NNE 6 G 7 75°F 78°F1021.1 hPa
RDYD1 - 8551910 - Reedy Point, DE 49 mi72 min 76°F 82°F1020.5 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore / Martin, MD12 mi12 minN 310.00 miMostly Cloudy75°F57°F54%1022 hPa
Baltimore, Inner Harbor, MD16 mi12 minno data mi76°F53°F45%1021 hPa
Baltimore, Baltimore-Washington International Airport, MD23 mi12 minENE 410.00 miMostly Cloudy76°F54°F47%1021 hPa

Link to 5 minute data for KMTN

Wind History from MTN (wind in knots)
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Last 24hrCalmCalmNW4NW3CalmCalmCalmNW3----NW4NW5NW4CalmNW4NW4NW5N5NE7NE9NE10NE11E7Calm
1 day agoSW6S6SE11SE11NW18
G33
--Calm------W3W4CalmNW5CalmNW3N4NW5NW5N6N3N3N4NW3
2 days ago--SE15
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SW4S6S3Calm--CalmSW3CalmCalm--CalmNW3--W5W5S6SW9W5W14W8SW3

Tide / Current Tables for Bowley Bar, Middle River, Maryland
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Bowley Bar
Click for Map
Sat -- 12:19 AM EDT     Moonrise
Sat -- 02:22 AM EDT     1.98 feet High Tide
Sat -- 06:26 AM EDT     Sunrise
Sat -- 09:42 AM EDT     0.90 feet Low Tide
Sat -- 02:14 PM EDT     1.33 feet High Tide
Sat -- 03:00 PM EDT     Moonset
Sat -- 07:48 PM EDT     Sunset
Sat -- 08:07 PM EDT     0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.8221.81.61.41.210.90.911.11.21.31.31.10.90.70.50.40.50.70.9

Tide / Current Tables for Battery Point, Gunpowder River, Maryland
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Battery Point
Click for Map
Sat -- 12:19 AM EDT     Moonrise
Sat -- 02:35 AM EDT     1.98 feet High Tide
Sat -- 06:26 AM EDT     Sunrise
Sat -- 10:09 AM EDT     0.90 feet Low Tide
Sat -- 02:27 PM EDT     1.33 feet High Tide
Sat -- 03:00 PM EDT     Moonset
Sat -- 07:48 PM EDT     Sunset
Sat -- 08:34 PM EDT     0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.8221.91.71.51.31.110.90.91.11.21.31.31.210.80.60.50.40.60.8

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 (17,4,5,8)
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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.