Tuesday, March19, 2019 L-36.com


Marine Weather and Tides
Port Deposit, 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 7:17PM Tuesday March 19, 2019 6:45 PM EDT (22:45 UTC) Moonrise 4:44PMMoonset 5:34AM 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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ANZ530 Chesapeake Bay North Of Pooles Island- 625 Pm Edt Tue Mar 19 2019
Tonight..S winds 5 kt. Waves flat.
Wed..SE winds 5 to 10 kt. Waves 1 ft or less.
Wed night..SE winds 5 to 10 kt. Waves 1 ft or less. Rain likely.
Thu..E winds 5 to 10 kt. Waves 1 ft or less. 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 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 to 10 kt. Waves 1 ft.
ANZ500 625 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 Port Deposit, MD
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location: 39.6, -76.11     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 191843
afdlwx
area forecast discussion
national weather service baltimore md washington dc
243 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 tonight
We have scattered cumulus clouds lingering over northwest
maryland, western virginia and eastern west virginia currently.

This has dropped cloud levels down to six thousand feet in some
areas but there are signs of these clouds thinning moving into
this afternoon. Winds are expected to remain light and variable
through this evening. High pressure will remain over the region
through this evening.

Some high clouds will be possible this evening but clouds are
expected to remain thin. Temperatures are expected to be chilly
in the 30s and the 20s in some areas as light winds will allow
good radiational cooling overnight

Short term Wednesday 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 18z Tuesday through Sunday
We have lower clouds currently affecting areas near martinsburg
airport but I expect these clouds to break later this afternoon.

Vfr conditions expected through Wednesday but high clouds will
start to build into our region Wednesday afternoon. As a coastal
low approaches from the south and a cold front approaches from
the west, cloud bases will lower to MVFR late Wednesday evening
and ifr conditions possible starting Thursday morning. As rain
moves into our region on Thursday, ifr conditions are likely
with lowering cloud levels.

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... Jmg
short term... Jmg
long term... Kjp
aviation... Kjp jmg
marine... Kjp jmg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 17 mi33 min WSW 2.9 G 6 49°F 48°F1029 hPa
DELD1 - 8551762 - Delaware City, DE 28 mi27 min SSE 2.9 G 5.1 48°F 44°F1028.8 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 28 mi27 min SW 5.1 G 7 47°F 47°F1029.3 hPa
RDYD1 - 8551910 - Reedy Point, DE 29 mi33 min 1028.2 hPa
BLTM2 - 8574680 - Baltimore, MD 34 mi33 min S 4.1 G 8 47°F 45°F1028.6 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 34 mi27 min SE 11 G 12 45°F 1029 hPa
FSNM2 34 mi33 min SE 8.9 G 11 45°F 1028.5 hPa
MRCP1 - 8540433 - Marcus Hook, PA 40 mi27 min 50°F 46°F1028.2 hPa
CPVM2 44 mi27 min 48°F 13°F
SJSN4 - 8537121 - Ship John Shoal, NJ 44 mi27 min S 6 G 7 45°F 45°F1028.9 hPa
APAM2 - 8575512 - Annapolis, MD 47 mi27 min 46°F 1028.9 hPa

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Phillips Army Air Field / Aberdeen, MD10 mi57 minS 77.00 miFair46°F17°F32%1029.1 hPa
Baltimore / Martin, MD24 mi60 minSE 710.00 miClear48°F19°F32%1029.5 hPa

Wind History from APG (wind in knots)
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Last 24hrSE5Calm------------------CalmCalmCalmCalmN6NE3NE6NE7S8S10S12SE10S7
1 day ago----------------------E6NE7E7E9NE8NE7NE9NE7--CalmE6E6S7
2 days ago------------------------------------------------

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Tue -- 05:22 AM EDT     0.23 feet Low Tide
Tue -- 06:33 AM EDT     Moonset
Tue -- 07:09 AM EDT     Sunrise
Tue -- 09:43 AM EDT     2.23 feet High Tide
Tue -- 05:12 PM EDT     -0.41 feet Low Tide
Tue -- 05:43 PM EDT     Moonrise
Tue -- 07:15 PM EDT     Sunset
Tue -- 10:33 PM EDT     2.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.71.20.80.40.20.30.81.52.12.221.61.10.60.1-0.2-0.4-0.30.31.22.12.62.7

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Tue -- 03:11 AM EDT     0.02 knots Slack
Tue -- 06:17 AM EDT     2.13 knots Max Flood
Tue -- 06:32 AM EDT     Moonset
Tue -- 07:08 AM EDT     Sunrise
Tue -- 09:01 AM EDT     -0.00 knots Slack
Tue -- 12:21 PM EDT     -2.27 knots Max Ebb
Tue -- 04:06 PM EDT     0.10 knots Slack
Tue -- 05:42 PM EDT     Moonrise
Tue -- 06:57 PM EDT     2.28 knots Max Flood
Tue -- 07:14 PM EDT     Sunset
Tue -- 10:09 PM EDT     -0.08 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.8-1.6-1.2-0.51.11.82.121.50.2-1.4-2-2.3-2.2-1.9-1.4-0.51.52.12.32.11.50.6-1.3

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 (18,4,5,8)
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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.