Saturday, January19, 2019 L-36.com


Marine Weather and Tides
Riviera Beach, 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 5:13PM Saturday January 19, 2019 9:22 PM EST (02:22 UTC) Moonrise 3:41PMMoonset 5:44AM 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- 733 Pm Est Sat Jan 19 2019
.gale warning in effect from 6 am est Sunday through Sunday afternoon...
Tonight..SE winds 10 kt. Gusts up to 20 kt. Waves 1 to 2 ft. Rain.
Sun..SW winds 10 kt with gusts to 20 kt...becoming nw 20 to 25 kt with gusts to 40 kt in the late morning and afternoon. Waves 2 to 3 ft. A chance of rain.
Sun night..NW winds 20 to 25 kt with gusts to 35 kt. Waves 2 to 3 ft.
Mon..NW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
Mon night..NW winds 10 to 15 kt. Gusts up to 25 kt in the evening. Waves 1 to 2 ft.
Tue..W winds 5 kt. Waves less than 1 ft.
Tue night..S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Wed..SW winds 5 to 10 kt. Waves 1 ft. Rain.
Thu..NW winds 5 to 10 kt. Waves 1 ft. Rain through the day, then a chance of rain or snow showers through the night.
ANZ500 733 Pm Est Sat Jan 19 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A strong low pressure system will move northwest of the area this evening, with the trailing cold front sweeping through on Sunday. High pressure will slowly build back in early next week. Another low pressure system will approach the region by Wednesday. A gale warning may be needed Sunday night and Monday. Small craft advisories may be needed Tuesday night and Wednesday.


7 Day Forecast for Marine Location Near Riviera Beach, MD
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location: 39.16, -76.53     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 200151 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
851 pm est Sat jan 19 2019

Synopsis
A strong storm system will move northeastward across the region
tonight. Arctic high pressure will gradually build across the
region Sunday through Tuesday. A slow moving cold front will
slide into the region Wednesday, with another strong storm
system possibly moving across the region late in the week.

Near term through Sunday
Precip has transitioned to sleet and rain across north central
and northeast md based on spotter reports and dual pol cc
product. Snow remains the main p-type across allegany county md
where up to 4.5 inches of snow have been reported. It should
become predominantly fzra across western allegany later tonight
and rain everywhere else as temps continue to rise. All of the
warnings and advisories should be able to be canceled by 06z
sun except in western allegany where temps may still be around
freezing.

Looking at tomorrow, NW winds will kick in early in the day and
may continue all night and all day Monday. Wind advisories may
need to be extended into Monday and wind chill advisories will
also be needed.

Previous afd...

the system pulls quickly to the northeast early Sunday, with
precip pulling out near or just after dawn, mostly in the form
of rain. Strong pressure gradient developing on the back side of
the low will likely lead to widespread gusts of 40-45, perhaps
50 mph, so have issued wind advisory for most of the CWA on
Sunday. Otherwise, the theme of the day will be winter's return
as cold air rushes back into the region. Temps which will start
out in the fairly mild 40s in the metro will end up in the 20s
by the end of the day, with whatever liquid remains likely
freezing up. Perhaps not quite a "flash" freeze technically, but
definitely a hazard. Further west will not start out so lucky,
with temps likely stuck in the 30s most of the night, but they
too will end up well below freezing by day's end. Wind chills
will also plummet, with readings likely into the single digits
by nightfall.

Short term Sunday night through Monday night
Low pressure will continue slowly moving away Sunday night
through Monday night as arctic high pressure slowly builds in.

This will keep the winds from diminishing rapidly, with only a
slow decline. Combined with bitterly cold arctic air, wind chill
advisories will almost certainly be needed across most of the
cwa, and its possible some of the high mountains out west might
need a wind chill warning. The northwest winds will likely also
result in some snow showers in the upslope areas, but
accumulations will be minimal. Snow showers should abate Monday
as the gradient relaxes slowly and high pressure moves closer.

Monday promises to be the coldest day so far this winter, with
temps struggling to reach 20, and many places likely failing to
do so. Monday night will also be cold, but with the high moving
overhead, winds should slack off considerably, so wind chills
likely won't be nearly as bad.

Long term Tuesday through Saturday
Changeable weather expected through next week with very cold
conditions early giving way to moderating temperatures with
increasing precipitation mid-week, followed by falling
temperatures again by the end of the week.

Strong 1035-1040mb high pressure will be positioned overhead
Tuesday morning, leading to near ideal radiational cooling
conditions with morning lows likely bottoming out in the single
digits and teens for many locations, with some sub-zero air
temperatures likely.

The air mass will however bounce in and out quite quickly, with
south southwest flow developing during the day Tuesday. Dry
conditions still expected with highs rebounding in the 30s.

The next system will then rapidly be moving through the eastern
great lakes Tuesday night into Wednesday with its attendant
cold front pushing eastward towards the region. This would place
our region in the warm sector, with rain being the favored
precipitation type on Wednesday. However as with any departing
arctic air mass, there may be enough cold air to produce some
freezing rain if precipitation can move in Tuesday night.

Temperatures will then moderate further Wednesday.

The most uncertainty then lies Wednesday night and Thursday as
most model ensemble guidance depicts secondary wave of low
pressure riding along the frontal boundary near the region,
although details to be determined.

A secondary re-inforcing cold front will then move towards the
area Friday with upslope snow showers possible.

Aviation 02z Sunday through Thursday
Low level wind shear will be a significant issue overnight
along with rain, low clouds and low visibility. Rain ends very
early Sunday with gusty winds, perhaps 40-45 knots, being the
main issue most of the day. Highest winds in the afternoon.

Winds lighten up slowly after that but otherwise remainingVFR
Sunday night through Monday night.

Vfr expected for Tuesday with strong high pressure overhead.

Potential for sub-vfr conditions then increases Wednesday into
Thursday with widespread precipitation as next low pressure
system moves into the area. Gusty southwest flow and low level
wind shear may also become a concern Wednesday.

Marine
Sca remains in effect for the waters as low pressure crosses the
region. Should then get very windy on Sunday as strong low
pressure pulls away, so have gales for all waters. May need to
extend gales into the night Sunday night and possibly Monday,
then winds relax Monday night as high pressure moves overhead.

Sub-sca conditions expected Tuesday with high pressure
overhead. SCA conditions then return Tuesday night through
Thursday with increasing southwesterly flow ahead of the next
low pressure system, turning northwest behind.

Tides coastal flooding
Tides are elevated with onshore flow. Near minor flooding is
possible through Sunday before strong northwest winds ensue.

Lwx watches warnings advisories
Dc... Wind advisory from 11 am to 7 pm est Sunday for dcz001.

Md... Wind advisory from 7 am to 7 pm est Sunday for mdz003-501-502.

Winter weather advisory until 6 am est Sunday for mdz003-004.

Wind advisory from 11 am to 7 pm est Sunday for mdz004>006-011-
013-014-016>018-503>508.

Winter storm warning until 6 am est Sunday for mdz501-502.

Va... Wind advisory from 7 am to 7 pm est Sunday for vaz025>031-503-
504-507-508.

Wind advisory from 11 am to 7 pm est Sunday for vaz040-051>054-
501-502-505-506.

Winter weather advisory until midnight est tonight for vaz507.

Wv... Wind advisory from 7 am to 7 pm est Sunday for wvz050>053-055-
501>506.

Winter weather advisory until 6 am est Sunday for wvz050>052-
055-501>505.

Marine... Small craft advisory until 6 am est Sunday for anz532>534-536-
537-540>543.

Gale warning from 6 am to 6 pm est Sunday for anz530>543.

Synopsis... Rcm
near term... Lfr
short term... Rcm
long term... Mm
aviation... Mm lfr
marine... Mm lfr
tides coastal flooding... Lwx


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 4 mi53 min ENE 11 G 12 37°F 1009.2 hPa
BLTM2 - 8574680 - Baltimore, MD 8 mi53 min ESE 8.9 G 11 37°F 38°F1008.9 hPa
APAM2 - 8575512 - Annapolis, MD 13 mi53 min 41°F 1008.5 hPa
CPVM2 14 mi53 min 42°F 42°F
TCBM2 - 8573364 - Tolchester Beach, MD 16 mi53 min ENE 6 G 8.9 40°F 39°F1009.2 hPa
TPLM2 - Thomas Point, MD 19 mi23 min ESE 11 G 12 42°F 38°F1008.4 hPa (-6.0)42°F
BSLM2 - Chesapeake Bay, MD 28 mi113 min ESE 4.1 39°F 1010 hPa36°F
WASD2 - 8594900 - Washington, DC 33 mi53 min ENE 2.9 G 5.1 39°F 38°F1008.4 hPa
CHCM2 - 8573927 - Chesapeake City, MD 46 mi53 min E 8.9 G 14 1010.5 hPa
CA2 - 8571892 - Cambridge, MD 47 mi53 min 1008.6 hPa

Wind History for Francis Scott Key Bridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore, Baltimore-Washington International Airport, MD8 mi29 minENE 102.50 miHeavy Rain Fog/Mist37°F36°F96%1008 hPa
Baltimore, Inner Harbor, MD9 mi29 minno data mi37°F34°F89%1008.5 hPa
Annapolis, United States Naval Academy, MD13 mi29 minE 53.00 miRain44°F39°F83%1008.2 hPa
Baltimore / Martin, MD14 mi29 minNE 71.50 miRain Fog/Mist37°F37°F100%1009.1 hPa
Fort Meade / Tipton, MD14 mi41 minENE 41.75 miOvercast36°F33°F93%1009.1 hPa
Bay Bridge Field, MD17 mi43 minESE 84.00 miRain Fog/Mist41°F41°F100%1008.1 hPa
College Park Airport, MD24 mi40 minN 02.00 miOvercast35°F34°F96%1008.1 hPa

Wind History from BWI (wind in knots)
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Last 24hrW3NW3N4CalmCalmCalmCalmCalmE3CalmE5E5E7E12E9E6E9E11E10E14E12E12NE10E10
1 day agoE6E5E5E7E5E4E5E7E5N3NE4CalmCalmCalmW4SW5CalmSW4CalmNW4E3CalmS3W3
2 days agoW5W4W6W4W4W5W4CalmCalmNE74NE9E9E10E8E7E7SE6E7E6E7E6E5E5

Tide / Current Tables for Stony Creek, Patapsco 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
Sat -- 01:32 AM EST     0.00 knots Slack
Sat -- 03:39 AM EST     0.36 knots Max Flood
Sat -- 05:42 AM EST     Moonset
Sat -- 05:52 AM EST     -0.00 knots Slack
Sat -- 07:21 AM EST     Sunrise
Sat -- 08:59 AM EST     -0.62 knots Max Ebb
Sat -- 11:37 AM EST     0.00 knots Slack
Sat -- 03:32 PM EST     1.25 knots Max Flood
Sat -- 03:41 PM EST     Moonrise
Sat -- 05:11 PM EST     Sunset
Sat -- 07:08 PM EST     -0.00 knots Slack
Sat -- 10:26 PM EST     -1.08 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.20.10.30.30.2-0-0.3-0.5-0.6-0.5-0.20.20.611.21.210.60.1-0.4-0.8-1.1-1

Weather Map and Satellite Images
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wmap_A
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 (21,6,7,8)
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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.