Wednesday, March20, 2019 L-36.com


Marine Weather and Tides
Arden on the Severn, MD

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:08AMSunset 7:19PM Wednesday March 20, 2019 12:48 AM EDT (04:48 UTC) Moonrise 6:00PMMoonset 6:13AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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- 1037 Pm Edt Tue Mar 19 2019
Rest of tonight..S winds 5 kt. Waves flat.
Wed..SE winds around 5 kt. Waves 1 ft or less.
Wed night..SE winds 5 kt. Waves less than 1 ft. Rain likely.
Thu..E winds 5 kt. Waves flat. Rain.
Thu night..NW winds 5 to 10 kt. Waves 1 ft. A chance of rain.
Fri..W winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
Fri night..NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Sat..NW winds 10 to 15 kt. Waves 1 to 2 ft.
Sun..SW winds 5 kt. Waves less than 1 ft.
ANZ500 1037 Pm Edt Tue Mar 19 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build overhead through tonight before settling to the south Wednesday. Low pressure will move northward along the coast Wednesday night and it will pass through our area Thursday. High pressure will return for late in the week into the weekend. A small craft advisory may be needed for portions of the waters late Thursday through Saturday.


7 Day Forecast for Marine Location Near Arden on the Severn, MD
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location: 39.07, -76.58     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 200128
afdlwx
area forecast discussion
national weather service baltimore md washington dc
928 pm edt Tue mar 19 2019

Synopsis
High pressure will remain in place over the region through
Wednesday. A coastal low will develop off the coast of the
carolinas and move northward into our region Thursday. A
cold front will approach our region from the west on
Thursday and linger through early Friday. High pressure will
build into our region from the great lakes through the weekend.

Another system will affect our region Monday into Tuesday next
week.

Near term through Wednesday
Very light to calm winds under a clear sky are leading to
radiational cooling this evening as high pressure builds
overhead. High clouds are moving in steadily from the west,
though, which should cause temperatures to level off after
midnight. Lows in the middle to upper 20s are expected for much
of the area, expected lower to middle 30s in the major
urban downtown areas.

Short term Wednesday night through Thursday night
High pressure will shift northeastward out of our region through
Wednesday evening. As the high shifts out of our region, winds
will become southerly leading to good warm air advection into
our area. Temperatures during the day on Wednesday are expected
to trend upwards into the mid 50s. High clouds will start to
build into our region from the west as a cold front approaches
from the midwest.

Multiple areas of upper level energy will shift eastward toward
our region late Wednesday into Thursday. The northern stream of
energy will dig southward from the upper midwest into the great
lakes region and our area late Wednesday into Thursday. The
southern stream is forecast to be kicked southward into the
southeastern us and form a coastal low along the carolina
coast. The models have the two energy streams merging over the
carolinas by late Thursday into Friday. Temperatures on Thursday
are expected to warm ahead of the cold frontal passage.

The coastal low forming in the carolinas is expected to move
northward into our region Thursday morning into afternoon
periods. A cold front will approach at the same time from the
west. There is general model agreement that precipitation will
start to affect our region some time after 00z on Thursday with
best chance being after 6z. Rain will likely overspread most of
the region by the 12 to 18z period. I have upped the pops
slightly in the 00z to 6z period to account for some models
having the coastal low moving quicker into our region. As the
cold front approaches from the west the higher elevations out
west could experience a few scattered snow showers. Rain is
expected to finally move out of our region by late Thursday into
Friday with some showers lingering into Friday near the mason
dixon line. Some upslope snow showers can't be ruled out behind
the cold frontal passage Friday morning.

Long term Friday through Tuesday
An upper-level low will swing down from the north on Friday, as the
coastal low that will bring rain on Thursday departs off to the
northeast. As the upper low tracks southward, it will drive a
surface cold front through the area Friday afternoon. A few showers
will be possible along the surface cold front, and also within the
steep low-level lapse rate environment beneath the upper low. Some
of these showers could potentially fall in the form of snow or
graupel over the higher elevations. Gusty winds will also be
possible Friday afternoon and evening in post frontal northwesterly
flow.

High pressure will gradually build over the region through the day
Saturday as shortwave ridging aloft moves into the ohio valley. The
high will slide offshore on Sunday, which will allow southerly
return flow to develop. Both days this weekend look dry, but Sunday
will be substantially warmer than Saturday as southerly winds start
to transport a warmer airmass into the area.

On Monday, disturbances in both the northern and southern streams
will start to approach the area. The northern stream trough will be
quite dynamic, forcing the development of a large area of high
pressure in it's wake. This high will shift southward in conjunction
with the upper trough, driving a powerful cold front southeastward
toward our area. The combination of the southern stream disturbance
approaching from the tennessee valley, coupled with the southward
surging cold front could produce precipitation across the area by
Monday afternoon. However, the positioning of the front and the
resultant chances for precipitation are still rather uncertain six
days out. The airmass behind the cold front looks very cold for late
march, and wintry precipitation may be possible behind the front,
even at lower elevations.

Aviation 02z Wednesday through Sunday
Vfr conditions expected through Wednesday as mid high clouds
build in from the west. As a coastal low approaches from the
south and a cold front approaches from the west Thursday, with
cloud bases lowering to MVFR Wednesday evening and ifr conditions
possible by Thursday morning. As rain moves into our region on
Thursday, ifr conditions likely continue.

Vfr conditions are expected on Friday through the weekend. However,
a brief shower can't be ruled out during the day on Friday.

Marine
High pressure expected to remain in place through Wednesday
leading to light and variable winds. A coastal low will approach
and move through the waters on Thursday leading to the
possibility that small craft advisories maybe needed Thursday
evening into Friday.

A cold front will pass over the waters during the day Friday. Sca
level winds appear likely behind this front, and there's a chance
that winds may even reach gale force late Friday afternoon. Sca
level winds appear possible Friday night through much of the day
Saturday, before winds gradually drop to sub-sca levels Saturday
night.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Jmg
near term... Dhof jmg
short term... Jmg
long term... Kjp
aviation... Dhof kjp jmg
marine... Dhof kjp jmg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 8 mi48 min 38°F 1029.5 hPa (+0.0)
CPVM2 11 mi48 min 43°F 31°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 11 mi48 min S 1 G 1.9 42°F 1029.9 hPa (+0.0)
FSNM2 11 mi54 min SSE 1.9 G 4.1 42°F 1029.2 hPa
BLTM2 - 8574680 - Baltimore, MD 14 mi48 min SW 1 G 2.9 41°F 46°F1029.4 hPa (+0.0)
TPLM2 - Thomas Point, MD 14 mi48 min SSE 11 G 12 43°F 45°F1030.7 hPa (+0.0)34°F
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi48 min ESE 4.1 G 5.1 36°F 48°F1030.1 hPa (+0.0)
BSLM2 - Chesapeake Bay, MD 21 mi138 min Calm 34°F 1030 hPa
WASD2 - 8594900 - Washington, DC 27 mi48 min WSW 1.9 G 2.9 43°F 49°F1029.9 hPa (+0.0)
CA2 - 8571892 - Cambridge, MD 44 mi48 min 38°F 48°F1030.3 hPa (+0.0)
COVM2 - 8577018 - Cove Point LNG Pier, MD 47 mi48 min S 13 G 14 43°F 1030.5 hPa (+0.0)

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, MD8 mi54 minN 010.00 miFair40°F28°F63%1030 hPa
Baltimore, Baltimore-Washington International Airport, MD10 mi54 minN 010.00 miFair33°F18°F54%1029.5 hPa
Fort Meade / Tipton, MD10 mi1.8 hrsN 010.00 miFair30°F23°F75%1030.5 hPa
Baltimore, Inner Harbor, MD15 mi54 minno data mi43°F16°F34%1029.7 hPa
Bay Bridge Field, MD15 mi68 minESE 610.00 miFair36°F30°F81%1030.1 hPa
College Park Airport, MD19 mi64 minN 010.00 miFair33°F20°F61%1029.8 hPa
Baltimore / Martin, MD20 mi66 minN 010.00 miFair36°F30°F81%1030.5 hPa
Camp Springs / Andrews Air Force Base, MD23 mi1.9 hrsN 010.00 miFair34°F17°F50%1030.4 hPa

Wind History from NAK (wind in knots)
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Last 24hrSW4CalmCalmCalmCalmCalmCalmCalmN4E6CalmSE9SE7SE10SE10SE9SE8SE6SE6S4CalmCalmCalmCalm
1 day agoCalmCalmE4E4CalmCalmNW3NE6E8NE7NE6CalmSE6SE6E3E6SE6SE5SE5S3CalmCalmCalmCalm
2 days agoN7N5NW6CalmCalmNW3CalmW34NW9W9
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CalmSE7E5CalmCalmNW3Calm

Tide / Current Tables for Brewer Point, Maryland
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Brewer Point
Click for Map
Wed -- 12:08 AM EDT     0.06 feet Low Tide
Wed -- 05:34 AM EDT     0.92 feet High Tide
Wed -- 07:10 AM EDT     Sunrise
Wed -- 07:12 AM EDT     Moonset
Wed -- 12:14 PM EDT     -0.17 feet Low Tide
Wed -- 06:20 PM EDT     0.99 feet High Tide
Wed -- 07:00 PM EDT     Moonrise
Wed -- 07:17 PM EDT     Sunset
Wed -- 09:43 PM EDT     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.30.50.80.90.90.80.60.30.1-0.1-0.2-0.100.30.60.9110.80.60.40.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Wed -- 02:22 AM EDT     0.00 knots Slack
Wed -- 05:21 AM EDT     0.88 knots Max Flood
Wed -- 07:09 AM EDT     Sunrise
Wed -- 07:11 AM EDT     Moonset
Wed -- 08:22 AM EDT     -0.00 knots Slack
Wed -- 11:27 AM EDT     -0.93 knots Max Ebb
Wed -- 02:29 PM EDT     0.00 knots Slack
Wed -- 05:39 PM EDT     1.00 knots Max Flood
Wed -- 06:59 PM EDT     Moonrise
Wed -- 07:17 PM EDT     Sunset
Wed -- 08:47 PM EDT     -0.00 knots Slack
Wed -- 09:43 PM EDT     Full Moon
Wed -- 11:54 PM EDT     -1.00 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-0.6-0.20.30.70.90.80.60.2-0.3-0.7-0.9-0.9-0.6-0.20.20.70.910.80.4-0.1-0.6-0.9

Weather Map and Satellite Images
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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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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.