Monday, January21, 2019 L-36.com


Marine Weather and Tides
Baltimore Highlands, 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 7:20AMSunset 5:15PM Monday January 21, 2019 9:10 AM EST (14:10 UTC) Moonrise 5:59PMMoonset 7:44AM Illumination 100% Phase: Full Moon; Moon at 15 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- 638 Am Est Mon Jan 21 2019
.gale warning in effect until 4 pm est this afternoon...
.small craft advisory in effect from 4 pm est this afternoon through late tonight...
Today..NW winds 20 to 25 kt with gusts to 35 kt. Waves 2 ft.
Tonight..NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Tue..NW winds 5 to 10 kt...becoming se in the afternoon. Waves 1 ft or less.
Tue night..S winds 5 to 10 kt. Waves 1 ft.
Wed..S winds 10 kt with gusts to 20 kt. Waves 1 ft. Rain likely.
Wed night..SW winds 5 to 10 kt. Waves 1 ft. Rain.
Thu..W winds 10 to 15 kt. Waves 1 ft. Rain through the day, then a chance of snow through the night.
Fri..NW winds 10 to 15 kt. Waves 1 ft.
ANZ500 638 Am Est Mon Jan 21 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Arctic high pressure will slowly build over the region into Tuesday, then shift off the mid atlantic coast late Tuesday. Low pressure crossing the central u.s. Will approach the region Wednesday, and along with its associated cold front will cross the waters on Thursday. A secondary cold front will pass over the waters Friday, as high pressure builds over the waters through the first half of the weekend. Small craft advisories may be required Tuesday night, while looking likely Wednesday into Thursday.


7 Day Forecast for Marine Location Near Baltimore Highlands, MD
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location: 39.26, -76.6     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 210920
afdlwx
area forecast discussion
national weather service baltimore md washington dc
420 am est Mon jan 21 2019

Synopsis
Arctic high pressure will build over the region through Tuesday,
before sliding off the mid atlantic coast Tuesday night. A cold
front will move into the ohio valley on Wednesday, as low
pressure riding along the boundary moves across the area
Wednesday night and into Thursday. Another cold front will
cross the area on Friday as high pressure builds back over the
region the first half of the weekend.

Near term through tonight
Arctic high pressure stretches from ontario southward into the
mississippi river valley this morning, as low pressure over nova
scotia continues its track northward. The strong pressure
gradient between the building high and exiting low continues to
produce strong northwesterly winds across the mid atlantic,
with gusts of 25-35 mph being observed over the cwa. The main
story this morning, and really through tonight will be the very
cold temperatures being driven into the region. Observations
early this morning have temperatures in the single digits to
teens across the area. Factor in the winds mentioned above, wind
chill values are below zero for a majority of locations, with
some dangerously cold values as low as -25 to -30f along the
higher elevations of the alleghenies. As such the wind chill
warning remains in effect until this afternoon for the higher
elevations of the alleghenies, and a wind chill advisory
continues for everyone else through 11am.

Given the gradient remains strong with the exiting low and
building high, wind chills will hover around zero for much of
the day as highs likely hold in the teens, with low 20s along
our far southern zones. Did consider a potential wind advisory
this morning into early afternoon for portions of northern and
northeast md, as we could see some gusts upwards of 40-45mph.

Don't think the frequency of advisory level gusts and the
overall likelihood is high enough at this time to warrant an
issuance. Regardless, a blustery and very cold day is in store
for the region, despite ample sunshine. Be sure to dress in
layers if you are planning on spending anytime outdoors today,
ensuring to protect any exposed skin.

High pressure will build overhead tonight, with clear skies and
a gradual decrease in winds. This will allow wind chills to
remain below advisory levels, however low temperatures will be
exceptionally cold in the single digits for much of the area,
teens being observed in the cities and near the larger bodies of
water. Locations along the alleghenies, potomac highlands, as
well as portions of the shenandoah valley will likely fall
below zero.

Short term Tuesday through Wednesday night
The high will begin to shift off the coast Tuesday afternoon
and Tuesday night as a return flow sets up over the area.

Temperatures will rebound on Tuesday back into the 30s under
mostly sunny skies, but remain below normal for the latter half
of january. Clouds will be on the increase Tuesday night as
southwest flow aloft and warm air advection improves ahead of a
frontal boundary cross the mississippi valley and low pressure
nears the great lakes. As clouds increase Tuesday night ahead of
the approaching system, some light wintry precipitation will be
possible across portions of western md WV in the predawn hours
Wednesday. Not expected much in the way of accumulation, but
some light freezing rain and or sleet will be possible. Low
temperatures Tuesday night will range from the lower 20s to near
30 degrees.

The frontal boundary will near the area on Wednesday, bringing
rain to the region as warmer air wins out with highs in the
middle 40s to lower 50s. The boundary will linger across the
area Wednesday night as low pressure moves along it. This will
result in periods of moderate to heavy rainfall. As the low
nears the DELMARVA late Wednesday night and early Thursday
morning, colder air will try to filter in on the backside to
bring a change over to rain snow in the alleghenies.

Long term Thursday through Sunday
A low pressure system will move across our region Thursday.

Rain, associated with the low, will be moderate to heavy at
times with the potential for a little snow on the back side
of this low. Once the low moves off the east coast, drier air
will encompass much of the region with the possibility of some
upslope snow showers in the potomac highlands Thursday night.

Colder temperatures and drier air will ensue Friday and Friday
night before a brief cold front makes an attempt to cross the region
late Saturday into Saturday night. A couple of snow showers or
squalls could develop with this front.

An arctic high will build in behind this front and settle overhead,
briefly, late Saturday night into early Sunday. Another low pressure
system will develop to our south Sunday into Monday and move
northeast either over the interior southeast u.S. Or near the east
coast. Either way, this storm should be the one to watch throughout
the week as it has the potential to pull in colder air from the
northwest and enable the development of some accumulating snowfall.

The european model is hinting of this very thing. However; timing
and intensity of this storm system is how the GFS model is
differing from the european.

Aviation 08z Monday through Friday
Gusty northwest winds andVFR conditions will persist today
across the terminals. As high pressure builds over the terminals
tonight, winds will abate, with clear skies andVFR conditions
persisting through Tuesday night.

A return to subVFR conditions likely on Wednesday as a frontal
boundary and low pressure crosses the terminals through
Wednesday night with rain, at times heavy, expected.

Ifr conditions possible Thursday with rain overspreading the region.

Conditions should improve to MVFR orVFR Thursday night as the low
pressure pulls away. Winds southwest shifting northwest 10 to 15
knots Thursday, diminishing Thursday night.VFR conditions Friday
and Friday night. Winds west around 10 knots becoming northwest 10
to 15 knots Friday night.

Marine
Gale warnings remain in effect through this afternoon for all
waters. Small craft advisory conditions will linger tonight
before winds subside late as high pressure builds over the
waters.

With the high overhead, then shifting off the coast late
Tuesday, sub SCA conditions expected through this time. Winds
will increase late Tuesday night, and especially
Wednesday Wednesday night as southerly flow increases and low
pressure nears the waters, with SCA conditions likely.

Small craft advisories likely Thursday. Winds southwest shifting
northwest 15 knots gusting to 25 knots. Small craft advisories
possible Thursday night through Friday night. Winds northwest
becoming west 10 to 15 knots with possible higher gusts.

Tides coastal flooding
Persistent and strong northwest flow will yield blowout
conditions through tonight.

Lwx watches warnings advisories
Dc... Wind chill advisory until 11 am est this morning for dcz001.

Md... Wind chill warning until 1 pm est this afternoon for mdz501.

Wind chill advisory until 11 am est this morning for
mdz003>006-011-013-014-016>018-502>508.

Va... Wind chill warning until 1 pm est this afternoon for vaz503-
504.

Wind chill advisory until 11 am est this morning for
vaz025>031-036>040-050>057-501-502-505>508.

Wv... Wind chill warning until 1 pm est this afternoon for wvz501-
503-505-506.

Wind chill advisory until 11 am est this morning for
wvz050>053-055-502-504.

Marine... Small craft advisory from 4 pm this afternoon to 6 am est
Tuesday for anz530>543.

Gale warning until 4 pm est this afternoon for anz530>543.

Synopsis... Bkf
near term... Bkf
short term... Bkf
long term... Klw
aviation... Bkf klw
marine... Bkf klw
tides coastal flooding... Bkf


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 1 mi53 min NNW 13 G 24
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 5 mi53 min WNW 25 G 29 14°F 1023.1 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 19 mi53 min NW 27 G 32 15°F 35°F1023.4 hPa
APAM2 - 8575512 - Annapolis, MD 20 mi53 min 16°F 1023.4 hPa
CPVM2 21 mi53 min 16°F -3°F
TPLM2 - Thomas Point, MD 26 mi71 min W 27 G 31 14°F 38°F1023.5 hPa (+2.8)-1°F
WASD2 - 8594900 - Washington, DC 35 mi53 min WNW 15 G 25 15°F 37°F1025 hPa
CHCM2 - 8573927 - Chesapeake City, MD 46 mi53 min NW 21 G 30 12°F 35°F1021.9 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore, Inner Harbor, MD1 mi17 minno data mi14°F-7°F38%1024.7 hPa
Baltimore, Baltimore-Washington International Airport, MD6 mi17 minWNW 23 G 3410.00 miA Few Clouds and Windy13°F-6°F42%1024.2 hPa
Baltimore / Martin, MD11 mi26 minW 25 G 3410.00 miA Few Clouds and Windy16°F-5°F37%1024 hPa
Fort Meade / Tipton, MD15 mi29 minWNW 19 G 2610.00 miFair and Breezy14°F-4°F44%1025.4 hPa
Annapolis, United States Naval Academy, MD20 mi17 minWNW 14 G 2810.00 miFair18°F0°F43%1024.6 hPa
Bay Bridge Field, MD24 mi31 minno data10.00 miFair14°F-2°F48%1024 hPa

Wind History from BWI (wind in knots)
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1 day agoE7E12E9E6E9E11E10E14E12E12NE10E10NE4NE6NE7E4E8E8N3W5N3SW3W6W13
G24
2 days agoCalmCalmW4SW5CalmSW4CalmNW4E3CalmS3W3W3NW3N4CalmCalmCalmCalmCalmE3CalmE5E5

Tide / Current Tables for Middle Branch, Baltimore Harbor, Maryland
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Middle Branch
Click for Map
Mon -- 12:17 AM EST     Full Moon
Mon -- 01:46 AM EST     -0.15 feet Low Tide
Mon -- 06:32 AM EST     0.59 feet High Tide
Mon -- 07:21 AM EST     Sunrise
Mon -- 07:43 AM EST     Moonset
Mon -- 12:43 PM EST     -0.52 feet Low Tide
Mon -- 05:14 PM EST     Sunset
Mon -- 05:59 PM EST     Moonrise
Mon -- 07:24 PM EST     1.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0.1-0.2-00.20.40.60.60.40.2-0.1-0.3-0.5-0.5-0.4-0.10.30.71.11.21.21.10.80.5

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Mon -- 12:17 AM EST     Full Moon
Mon -- 02:53 AM EST     0.00 knots Slack
Mon -- 05:15 AM EST     0.53 knots Max Flood
Mon -- 07:20 AM EST     Sunrise
Mon -- 07:41 AM EST     Moonset
Mon -- 07:46 AM EST     -0.00 knots Slack
Mon -- 10:45 AM EST     -0.70 knots Max Ebb
Mon -- 01:24 PM EST     0.00 knots Slack
Mon -- 05:08 PM EST     1.26 knots Max Flood
Mon -- 05:13 PM EST     Sunset
Mon -- 05:59 PM EST     Moonrise
Mon -- 08:36 PM EST     -0.00 knots Slack
Mon -- 11:53 PM EST     -1.16 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-0.8-0.400.40.50.50.3-0.1-0.4-0.6-0.7-0.5-0.20.30.71.11.31.20.80.3-0.2-0.7-1.1

Weather Map and Satellite Images
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GOES 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 (9,2,3,4)
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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.