Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Naval Academy, MD

Version 3.4
NOTICE
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 6:49AMSunset 7:09PM Thursday September 19, 2019 2:44 PM EDT (18:44 UTC) Moonrise 9:19PMMoonset 10:49AM Illumination 69% 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- 136 Pm Edt Thu Sep 19 2019
This afternoon..NE winds 10 kt. Waves 1 to 2 ft.
Tonight..SW winds 5 to 10 kt. Waves 1 ft.
Fri..SW winds 5 to 10 kt. Waves 1 ft.
Fri night..SW winds 5 kt. Waves less than 1 ft.
Sat..SW winds 5 kt. Waves less than 1 ft.
Sat night..S winds 5 kt. Waves less than 1 ft.
Sun..S winds 5 to 10 kt. Waves 1 to 2 ft.
Mon..W winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night.
ANZ500 136 Pm Edt Thu Sep 19 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over new england will build across the waters through Saturday before settling to the south on Sunday. Small craft advisories will be possible for a portion of the waters Sunday night.


7 Day Forecast for Marine Location Near Naval Academy, MD
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location: 38.99, -76.47     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 191344 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
944 am edt Thu sep 19 2019

Synopsis
High pressure will remain in place over the region through this
weekend. A cold front will slowly move into our region during
the early part of next week as the high slides to our southeast.

Near term through tonight
Really not much else to say or add from previous fcst. Low
overcast over the shenandoah valley and blue ridge is beginning
to erode and will slowly dissipate by mid to late afternoon as
deep dry air continues to advect in.

Previous afd...

high pressure will move overhead today and tonight. Plenty of
sunshine, dry conditions and a light northeast wind is expected.

High temperatures will top out in the lower to middle 70s. Low
temperatures will bottom out in the middle 50s. Good radiational
cooling is expected again tonight; thus, leaving an open
invitation for some patchy fog to form in our region. Most, if
any, fog that forms would be mainly in the lower valleys.

Short term Friday through Saturday night
The area of high pressure will slide southward into the tidewater of
virginia and the eastern carolinas Friday through Saturday night.

Dry conditions and plenty of sunshine is still expected across our
region. Friday's high temperatures will be about 5 to 7 degrees
warmer than Thursday as light and variable winds favor more of a
south to southwesterly wind to usher in warmth and some higher
humidity. Saturday's high temperatures will be about 5 degrees
warmer than Friday as the southwest breeze continues. Low
temperatures, both Friday night and Saturday night, will favor a
similar trend of the next night being milder than the previous night
as lows dip into the middle to upper 50s Friday night, then the
middle 60s Saturday night. Lows in our western zones, including the
potomac highlands could encounter lower to middle 40s Friday
night.

Long term Sunday through Wednesday
By Sunday, the ridge axis will begin to push offshore as a trough
axis crosses the center of the conus. Temperatures at 850 mb rise by
a degree c or two, suggesting the highs may make a run at 90
degrees. Humidity will increase slightly too, but not to oppressive
levels.

As the trough axis pushes toward the east coast Monday, it will drag
a surface front along. Forcing still does not look all that
impressive, and timing of the frontal passage unfavorable. Will
stick with a chance shower type wording. QPF likely will be meager.

Suspect Monday will be a touch cooler, due more to a greater amount
of cloud cover (although there will still be partial sunshine).

In the wake of the front, Tuesday and Wednesday do look slightly
cooler, but still above normal for late september. A broad
surface low level ridge will return, but with zonal flow aloft.

Aviation 14z Thursday through Monday
Upslope MVFR ceilings developing along the blue ridge at this
time, affecting cho mrb. These should continue through sunrise.

Otherwise,VFR conditions expected through Saturday night for
all terminals. If patchy fog forms at either cho or mrb tonight
or one of the weekend nights, then it could reduce conditions
briefly to ifr with visibility.

Vfr conditions should prevail Sunday and Monday, although some
predawn valley fog possible. Clouds will increase during Monday,
with scattered showers at night. Subsequent vsby restrictions
unlikely.

Marine
No marine hazards expected through Saturday night. Winds northeast
becoming east 10 knots today, then southeast 5 to 10 knots tonight.

Winds generally southwest 5 to 10 knots Friday through Saturday
night.

Pattern may be conducive for south channeling Sunday night, although
it would be premature to dive into details of a mesoscale phenomenon
at this juncture. Otherwise the pressure gradient should be light
enough to preclude any flags Sunday or Monday.

Tides coastal flooding
Over the next two to three high tide cycles, tides will be promoting
minor coastal flooding up and down the lower potomac and much of the
chesapeake bay. Minor coastal flooding resulting in advisories have
been extended. There is also a chance of minor coastal flooding
in one or two of these location Friday morning, but a little
too early to tell.

Lwx watches warnings advisories
Dc... Coastal flood advisory until 3 am edt Friday for dcz001.

Md... Coastal flood advisory until 10 pm edt this evening for
mdz016>018.

Coastal flood advisory until 3 am edt Friday for mdz014.

Va... Coastal flood advisory until 10 pm edt this evening for vaz057.

Coastal flood advisory until 3 am edt Friday for vaz054.

Wv... None.

Marine... Small craft advisory until 2 pm edt this afternoon for
anz530>534-537>543.

Synopsis... Lfr
near term... Lfr
short term... Klw
long term... Hts
aviation... Lfr hts
marine... Lfr hts
tides coastal flooding... Hts


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 1 mi57 min 66°F 1026.7 hPa
44063 - Annapolis 2 mi45 min NW 1.9 G 1.9 64°F 77°F1027.2 hPa (-0.9)
CPVM2 4 mi63 min 65°F
TPLM2 - Thomas Point, MD 7 mi45 min W 4.1 G 6 64°F 75°F1028.2 hPa (-0.9)45°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 16 mi57 min SSE 7 G 8.9 64°F 1027.4 hPa
FSNM2 16 mi69 min SSE 4.1 G 6 63°F 1027 hPa
BSLM2 - Chesapeake Bay, MD 19 mi135 min ESE 4.1 69°F 1028 hPa37°F
BLTM2 - 8574680 - Baltimore, MD 20 mi63 min SE 5.1 G 8.9 67°F 76°F1026.8 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi69 min N 8.9 G 9.9 64°F 74°F1027.4 hPa
44062 - Gooses Reef, MD 30 mi45 min N 5.8 G 7.8 64°F 1027.9 hPa (-0.9)
WASD2 - 8594900 - Washington, DC 30 mi63 min SSE 2.9 G 6 69°F 77°F1027 hPa
CA2 - 8571892 - Cambridge, MD 36 mi63 min SE 4.1 G 5.1 69°F 74°F1026.5 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 41 mi57 min NNW 4.1 G 8.9 63°F 1027.7 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi57 min ESE 6 G 8 65°F 77°F1026.5 hPa

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, MD1 mi2.8 hrsN 010.00 miFair69°F39°F35%1028 hPa
Bay Bridge Field, MD7 mi2.1 hrsE 510.00 miFair68°F44°F43%1027.8 hPa
Baltimore, Baltimore-Washington International Airport, MD17 mi1.8 hrsENE 6 G 1510.00 miMostly Cloudy69°F41°F36%1027.4 hPa
Fort Meade / Tipton, MD17 mi2 hrsE 810.00 miFair68°F41°F38%1028.4 hPa
Baltimore, Inner Harbor, MD21 mi1.8 hrsno data mi71°F39°F31%1027.7 hPa
Baltimore / Martin, MD24 mi1.8 hrsNE 410.00 miA Few Clouds68°F44°F43%1028.4 hPa
Camp Springs / Andrews Air Force Base, MD24 mi1.8 hrsENE 410.00 miFair69°F36°F30%1028 hPa
College Park Airport, MD24 mi2 hrsSE 310.00 miFair67°F36°F33%1027.4 hPa

Link to 5 minute data for KBWI

Wind History from BWI (wind in knots)
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Last 24hrNE5E7E105E7E7E9SE13SE7E8E9E7E5E6E6E4CalmE5E12E8E85E6
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1 day agoE7E6E7E7E6CalmCalmSE4CalmCalmCalmCalmCalmCalmW3CalmCalmCalmNE8E8NE5E8E9E8
2 days agoCalm3SE7E8E8E6E6NE8NE7NE4NE63NE5NE9NE7NE10NE10NE10E13E12E12E11
G15
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Tide / Current Tables for Annapolis (US Naval Academy), Severn River, Maryland
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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
Click for Map
Thu -- 12:34 AM EDT     -0.00 knots Slack
Thu -- 03:43 AM EDT     -0.75 knots Max Ebb
Thu -- 06:50 AM EDT     Sunrise
Thu -- 07:11 AM EDT     0.00 knots Slack
Thu -- 09:44 AM EDT     0.44 knots Max Flood
Thu -- 11:49 AM EDT     Moonset
Thu -- 12:22 PM EDT     -0.00 knots Slack
Thu -- 03:26 PM EDT     -0.57 knots Max Ebb
Thu -- 06:16 PM EDT     0.00 knots Slack
Thu -- 07:07 PM EDT     Sunset
Thu -- 09:53 PM EDT     0.88 knots Max Flood
Thu -- 10:18 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.2-0.5-0.7-0.7-0.6-0.4-0.10.20.40.40.30.1-0.2-0.4-0.6-0.5-0.4-0.10.30.60.80.90.8

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 (14,3,4,5)
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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.