Friday, October18, 2019 L-36.com


Marine Weather and Tides
Galesville, MD

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:17AMSunset 6:25PM Friday October 18, 2019 7:32 PM EDT (23:32 UTC) Moonrise 8:41PMMoonset 10:47AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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- 436 Pm Edt Fri Oct 18 2019
.small craft advisory in effect until 6 pm edt this evening...
Rest of this afternoon..NW winds 10 kt with gusts to 20 kt. Waves 2 ft.
Tonight..N winds 5 to 10 kt. Waves 1 to 2 ft.
Sat..SE winds 5 kt. Waves less than 1 ft.
Sat night..S winds 5 to 10 kt. Waves 1 ft. Showers likely.
Sun..NE winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft. Showers.
Sun night..N winds 5 to 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Mon..E winds 5 to 10 kt. Waves 1 ft.
Tue..W winds 5 to 10 kt. Waves 1 ft. Showers likely .
ANZ500 436 Pm Edt Fri Oct 18 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move overhead tonight, then pull offshore Saturday as tropical storm nestor moves across the north-central gulf coast and into the southeastern united states. NEstor will move northeastward offshore of north carolina or virginia on Sunday, then meander offshore through Tuesday until another cold front approaching from the ohio valley pushes across the region. Small craft advisories may be needed Sunday and again Tuesday.


7 Day Forecast for Marine Location Near Galesville, MD
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location: 38.85, -76.53     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 181821
afdlwx
area forecast discussion
national weather service baltimore md washington dc
221 pm edt Fri oct 18 2019

Synopsis
High pressure will settle over our region through Saturday. A
subtropical low will pass through our region from the south Saturday
evening through Sunday afternoon bringing up to half inch of rain.

Another cold front will move through our region Tuesday into early
Wednesday next week bringing another chance for rain.

Near term through tonight
The tight pressure gradient that has been causing the breezy
conditions will continue to weakened as the strong low to our north
moves over eastern canada. Winds should taper off after sunset as
the daytime mixing shuts off. Model trends have been suggesting that
winds will drop below five knots overnight. High pressure will move
overhead our region during the overnight periods. The combination of
light winds and clear skies along with the high over head will lead
to ideal conditions for radiation cooling. This will lead to
overnight lows dropping down into the low to mid 30s this evening
for most areas west of the i-95 corridor. The combination of
freezing to near freezing temps in the shenadoah valley, the potomac
highlands, and the blue ridge mountains has led us to issue a freeze
warning for these areas through Saturday morning. A frost advisory
has been issued for most areas west of the i-95 corridor through
Saturday morning.

Short term Saturday through Sunday night
High pressure over our region will slowly shift of the atlantic
coast on by Saturday afternoon. Winds will remain light but will
become more southerly in nature. This will lead to weak advection of
warm and moist air into our region. The southerly flow is not
expected to transport a lot of moisture into our region which means
skies should remain mostly clear on Saturday. As skies will be
mostly clear, day time temperatures are expected to be slightly
warmer on Saturday in the mid to upper 60s. Dry conditions are
expected through Saturday afternoon and the early evening periods.

A subtropical low over the gulf of mexico is forecast to move
northeastward through the carolinas and southern portions of
virginia. Global models have trended further northward with the
precipitation shield associated with this low. This has lead to
increase precipitation chances for our region especially for areas
in the dc metro and southward. The euro ensembles and
deterministic models suggest precipitation will start overnight
Saturday and linger through Sunday afternoon. Areas in central
virginia and southern maryland could see as much as a half inch of
rain from this system. This tropical low is expected be a quick
hitting system that is out of our region by Sunday evening. Rain
combined with overcast skies will likely tamp down the daytime
temperatures on Sunday. I may drop temperatures down by a few
degrees for Sunday since the most recent guidance has been coming
in as much cooler than previous days.

Long term Monday through Thursday
Sfc ridge will be in place Mon with next frontal zone associated
with deep western great lks low pressure system expected to cross
the area on tue. Pre-frontal showers are anticipated late Mon night
and continuing through Tuesday. Beneficial rain amounts of half inch
or more can be expected with this next system. High pressure builds
for the second half of next week with fair weather conditions
expected.

Aviation 18z Friday through Wednesday
High pressure will slowly move over our region today through
Saturday. Winds will become light this evening out of the northwest
with mostly clear skies. Winds will become southerly on Saturday and
remain light in the 5 to 10 knot range.VFR conditions expected
through Saturday afternoon. A tropical surface low pressure system
will move into our region late Saturday into Sunday afternoon. Rain
will overspread the region from the southwest to northeast with the
most impacted terminals being cho, iad and dca terminals. Aviation
restrictions will be likely during the rain with terminals
experiencing periods of MVFR conditions. The rain should be out of
the region by Sunday afternoon andVFR conditions expected Sunday
evening and into Monday.

MVFR CIGS in rain possible Sat night into sun.

Marine
High pressure will be overhead the waters today through Saturday.

Small craft advisories remain in effect for all the waters until
6pm. Winds will weakened this evening and small craft advisories
aren't expected for the overnight and Saturday periods. A coastal
low will pass through the waters late Saturday and into Sunday.

Small craft advisories will likely be needed once again Saturday
overnight and into Sunday.

Sca conditions possible Tuesday into Wednesday.

Tides coastal flooding
Tides are running below normal and no flooding issues are
expected in the next 24 hours.

Onshore (easterly) flow is expected to increase ahead low
pressure approaching from the south Saturday night into
Sunday, resulting in increasing water levels. There remains a
moderate level of uncertainty as to the extent and duration of
onshore flow, as that will be reliant upon the exact strength
and track of approaching low pressure. Therefore, the confidence
in exact water levels is low, though the confidence in seeing
at least minor flooding at the more vulnerable tidal sites seems
likely.

Light northerly flow should cause water levels to decrease a bit
heading into Monday, before onshore flow (southeasterly) flow
resumes Monday night into Tuesday, leading to a subsequent rise
in water levels once again.

Lwx watches warnings advisories
Dc... None.

Md... Frost advisory from 2 am to 9 am edt Saturday for mdz004>006-
503>507.

Freeze warning from 2 am to 9 am edt Saturday for mdz003-501-
502.

Va... Frost advisory from 2 am to 9 am edt Saturday for vaz025>027-
029-030-036>040-050>053-055-501>506.

Freeze warning from 2 am to 9 am edt Saturday for vaz028-031.

Wv... Frost advisory from 2 am to 9 am edt Saturday for wvz505-506.

Freeze warning from 2 am to 9 am edt Saturday for wvz050>053-
055-501>504.

Marine... Small craft advisory until 6 pm edt this evening for
anz530>543.

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



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 6 mi33 min W 11 G 12 61°F 64°F1016.2 hPa (+1.5)38°F
44063 - Annapolis 9 mi33 min W 7.8 G 7.8 61°F 64°F1015.2 hPa (+1.6)
APAM2 - 8575512 - Annapolis, MD 10 mi63 min 60°F 1014.2 hPa
BSLM2 - Chesapeake Bay, MD 11 mi123 min WNW 5.1 63°F 1014 hPa37°F
CPVM2 13 mi63 min 61°F
44062 - Gooses Reef, MD 21 mi39 min WNW 12 G 14 61°F 1016.4 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi63 min NNW 13 G 16 62°F 1014.3 hPa
FSNM2 25 mi63 min NNW 12 G 15 61°F 1014.5 hPa
WASD2 - 8594900 - Washington, DC 26 mi63 min NW 5.1 G 8 61°F 64°F1015.8 hPa
BLTM2 - 8574680 - Baltimore, MD 29 mi63 min N 7 G 11 62°F 67°F1014.3 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 29 mi63 min N 9.9 G 12 61°F 62°F1014.8 hPa
CA2 - 8571892 - Cambridge, MD 31 mi63 min Calm G 2.9 60°F 60°F1014.9 hPa
SLIM2 - 8577330 - Solomons Island, MD 37 mi63 min W 5.1 G 7 61°F 66°F1015 hPa
NCDV2 45 mi63 min NNW 2.9 G 4.1 58°F 1015 hPa
PPTM2 - 8578240 - Piney Point, MD 49 mi63 min NW 13 G 16

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD9 mi39 minW 410.00 miFair58°F36°F44%1015.5 hPa
Bay Bridge Field, MD14 mi53 minNW 410.00 miFair59°F41°F51%1014.9 hPa
Camp Springs / Andrews Air Force Base, MD18 mi37 minW 710.00 miFair58°F35°F44%1016.3 hPa
Fort Meade / Tipton, MD21 mi51 minWNW 610.00 miFair54°F37°F54%1016.3 hPa
College Park Airport, MD23 mi50 minW 410.00 miFair58°F32°F38%1015.6 hPa

Link to 5 minute data for KADW

Wind History from ADW (wind in knots)
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2 days agoSE5SE4SE5SE6SE5SE4CalmCalmSE7SE5S6S6S5SE5--S6CalmW8SW3NW8NW8NW10NW15
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G25

Tide / Current Tables for Shady Side, West River, Maryland
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Shady Side
Click for Map
Fri -- 03:27 AM EDT     0.50 feet Low Tide
Fri -- 07:18 AM EDT     Sunrise
Fri -- 08:05 AM EDT     0.95 feet High Tide
Fri -- 11:46 AM EDT     Moonset
Fri -- 02:06 PM EDT     0.23 feet Low Tide
Fri -- 06:23 PM EDT     Sunset
Fri -- 08:45 PM EDT     1.49 feet High Tide
Fri -- 09:40 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.70.60.50.50.60.80.910.90.80.60.40.30.20.30.40.711.31.41.51.41.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Fri -- 12:00 AM EDT     -0.00 knots Slack
Fri -- 03:19 AM EDT     -0.89 knots Max Ebb
Fri -- 07:04 AM EDT     0.00 knots Slack
Fri -- 07:17 AM EDT     Sunrise
Fri -- 09:26 AM EDT     0.40 knots Max Flood
Fri -- 11:46 AM EDT     Moonset
Fri -- 11:59 AM EDT     -0.00 knots Slack
Fri -- 02:52 PM EDT     -0.49 knots Max Ebb
Fri -- 05:27 PM EDT     0.00 knots Slack
Fri -- 06:22 PM EDT     Sunset
Fri -- 09:15 PM EDT     0.95 knots Max Flood
Fri -- 09:39 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0-0.4-0.7-0.9-0.8-0.7-0.3-00.20.40.40.2-0-0.2-0.4-0.5-0.4-0.10.20.50.80.90.90.7

Weather Map
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wmap_A
GEOS 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.
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Wind Forecast for Baltimore, MD/Washington (19,4,5,8)
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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.