Monday, March18, 2019 L-36.com


Marine Weather and Tides
Riva, 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 7:11AMSunset 7:17PM Monday March 18, 2019 12:17 PM EDT (16:17 UTC) Moonrise 3:33PMMoonset 4:53AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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- 1038 Am Edt Mon Mar 18 2019
Rest of today..NE winds 5 kt. Waves less than 1 ft. A chance of light snow late this morning. Scattered showers. Vsby 1 to 3 nm late this morning.
Tonight..S winds 5 kt...becoming nw late. Waves 1 ft.
Tue..N winds 5 to 10 kt. Waves 1 ft.
Tue night..SE winds 5 kt. Waves flat.
Wed..S winds 5 to 10 kt. Waves 1 ft or less.
Wed night..S winds 5 to 10 kt. Waves 1 ft.
Thu..NW winds 5 to 10 kt. Waves 1 ft.
Fri..NW winds 10 to 15 kt. Waves 1 to 2 ft.
ANZ500 1038 Am Edt Mon Mar 18 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Weak low pressure will pass through the waters today and high pressure will return for tonight through Wednesday. A cold front will pass through the waters Thursday and high pressure will return for late in the week into the weekend. A small craft advisory may be needed for portions of the waters later Wednesday through Friday.


7 Day Forecast for Marine Location Near Riva, MD
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location: 38.89, -76.6     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 181418
afdlwx
area forecast discussion
national weather service baltimore md washington dc
1018 am edt Mon mar 18 2019

Synopsis
Weak low pressure will pass through the area today and high
pressure will return for tonight through Wednesday. A cold front
will pass through the area Thursday and high pressure will
return for Friday into the weekend.

Near term through tonight
Weak low pressure will pass through the area this morning. Most
of the lift will be provided by a potent jetmax and digging
upper-level trough. However, moisture is limited and much of
the radar returns are not reaching the ground due to dry air
aloft as seen in the 12z sounding. Having said that, a period
of light rain snow and mountain snow is possible with the
passage of the low through the morning. The best chance for
light precipitation will be across the potomac highlands of west
virginia into northern virginia and toward the washington and
baltimore metropolitan areas. There is enough cold air aloft
that if precipitation does occur there could be some snow even
into the metro areas. However, precipitation rates would be
light (if anything at all) due to the abundant amount of dry air
in place, and with relatively warm conditions preceding this
event, this suggests that chances for accumulating snow in the
metro areas are low. There is a better chance for snow to coat
the ground in the mountains.

As the trough digs, an upper-level disturbance will pass through
the area late this morning through this afternoon. This may
trigger a few more showers, but coverage should be isolated to
scattered for most areas due to weak forcing and limited
moisture. MAX temps will range from the 30s and 40s in the
mountains to the 40s and 50s for most other locations. There
should be some breaks of sunshine, but a bkn CU deck is expected
underneath the subsidence inversion as the upper-level
disturbance swings through the area.

High pressure will return behind the departing upper-level
disturbance tonight, bringing dry and chilly conditions. Min
temps will be in the 20s for most areas with 30s in downtown
washington and baltimore. Light winds and mainly clear skies
overnight will provide a good setup for radiational cooling in
valleys and rural areas.

Short term Tuesday through Wednesday night
High pressure will build overhead for Tuesday through Tuesday
night before building to our south Wednesday into Wednesday
night. A cold front will approach from the ohio valley and
pennsylvania Wednesday night.

For Tuesday through Tuesday night, dry and chilly conditions are
expected with high pressure in control. Temps will be a little
below climo. Wednesday will also turn out dry, but a return flow
will allow for milder conditions during the afternoon.

A few showers are possible Wednesday night ahead of the
approaching cold front. Precipitation amounts should be light
since moisture will be limited. In fact, the deep moisture
sources of the atlantic and gulf of mexico should not come into
play with this system.

Long term Thursday through Sunday
A cold front will push across the region Thursday and bring a
chance for rain and snow showers. Most of any activity would be
mainly at the higher elevations due to an upslope flow. We
can't rule out a few sprinkles or flurries to the eastern zones,
but moisture may be limited. Temperatures will be near average.

High pressure will build into the region Thursday night through
Sunday. There could be a weak secondary cold front push through the
region late Friday, but it could be moisture-starved and just bring
a reinforcing shot of cooler air Friday night and Saturday.

Temperatures overall will be near normal Thursday night and Friday,
but then a few degrees below normal Friday and Saturday. Milder air
will evolve late Saturday through Monday due to high pressure.

Aviation 14z Monday through Friday
Vfr conditions are expected most of the time through Wednesday.

A brief period of light rain or snow is possible this morning,
and a couple showers are possible this afternoon. However, much
of the time will turn out dry. High pressure will control the
weather pattern tonight through Wednesday. A few showers are
possible Wednesday night ahead of an approaching cold front.

MVFR conditions cannot be ruled out, butVFR conditions are more
likely since moisture will be limited.

Despite a few passing showers near mrb Thursday, terminals should
encounterVFR conditions Thursday through Friday night. Winds
southeast becoming northwest around 5 knots Thursday and Thursday
night. Winds increasing northwest 10 to 15 knots with gusts to 20
knots Friday and Friday night.

Marine
Weak low pressure will pass through the waters today and high
pressure will return for tonight through Tuesday night. The high
will move offshore Wednesday and a cold front will approach from
the north and west Wednesday night.

Winds through Tuesday night should remain below SCA criteria for
most of the time. However, it may be close for a period ahead of
the building high tonight over the open waters. Confidence is
too low for an advisory at this time.

A return flow will develop Wednesday and it should strengthen
Wednesday night ahead of the approaching cold front. A small
craft advisory may be needed for portions of the waters later
Wednesday and Wednesday night.

High pressure will build toward the waters late in the week. A
small craft advisory may be needed for portions of the waters
during this time.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Bjl
near term... Bjl imr
short term... Bjl
long term... Klw
aviation... Bjl klw
marine... Bjl klw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 9 mi29 min 41°F 1025.9 hPa
BSLM2 - Chesapeake Bay, MD 9 mi107 min NE 2.9 42°F 1026 hPa
TPLM2 - Thomas Point, MD 9 mi17 min NE 1.9 G 4.1 39°F 44°F1027.3 hPa (+1.4)31°F
CPVM2 13 mi29 min 39°F
WASD2 - 8594900 - Washington, DC 22 mi29 min ESE 1 G 4.1 1026.2 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 23 mi29 min SE 7 G 8.9 40°F 1026.4 hPa
FSNM2 23 mi35 min E 8 G 8.9 1025.8 hPa
BLTM2 - 8574680 - Baltimore, MD 26 mi35 min SE 7 G 8.9 41°F 46°F1026 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 29 mi29 min ENE 8 G 11 40°F 46°F1026.6 hPa
CA2 - 8571892 - Cambridge, MD 36 mi35 min 44°F 47°F1025.5 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 36 mi29 min SE 2.9 G 4.1 44°F 1025.9 hPa
SLIM2 - 8577330 - Solomons Island, MD 40 mi29 min E 7 G 8 44°F 46°F1025 hPa
NCDV2 46 mi35 min ESE 6 G 8 44°F 1024.7 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD9 mi23 minN 010.00 miOvercast44°F28°F55%1026.4 hPa
Camp Springs / Andrews Air Force Base, MD15 mi21 minN 610.00 miPartly Cloudy42°F29°F61%1026.3 hPa
Bay Bridge Field, MD15 mi37 minNNE 410.00 miOvercast43°F32°F66%1026.4 hPa
Fort Meade / Tipton, MD16 mi35 minE 410.00 miOvercast39°F26°F61%1027.1 hPa
College Park Airport, MD18 mi33 minN 010.00 miOvercast41°F24°F52%1026.1 hPa
Baltimore, Baltimore-Washington International Airport, MD21 mi23 minESE 710.00 miMostly Cloudy43°F27°F53%1025.9 hPa
Washington/Reagan National Airport, DC, VA23 mi25 minENE 510.00 miOvercast45°F27°F49%1026.2 hPa

Wind History from NAK (wind in knots)
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Last 24hrNW5W10
G16
NW7CalmW7
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CalmSE7E5CalmCalmNW3CalmCalmCalmE4E4CalmCalmNW3NE6E8NE7NE6Calm
1 day agoW13
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N6N7N5NW6CalmCalmNW3CalmW34NW9W9
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Tide / Current Tables for Rhode River (County Wharf), Maryland
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Rhode River (County Wharf)
Click for Map
Mon -- 02:38 AM EDT     0.95 feet High Tide
Mon -- 05:52 AM EDT     Moonset
Mon -- 07:13 AM EDT     Sunrise
Mon -- 08:55 AM EDT     -0.15 feet Low Tide
Mon -- 03:29 PM EDT     1.28 feet High Tide
Mon -- 04:32 PM EDT     Moonrise
Mon -- 07:15 PM EDT     Sunset
Mon -- 10:10 PM EDT     0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.80.90.90.80.60.30.1-0.1-0.1-0.10.20.50.81.11.31.31.10.90.70.40.20.10.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Mon -- 01:07 AM EDT     0.00 knots Slack
Mon -- 03:47 AM EDT     0.58 knots Max Flood
Mon -- 05:51 AM EDT     Moonset
Mon -- 06:31 AM EDT     -0.00 knots Slack
Mon -- 07:12 AM EDT     Sunrise
Mon -- 09:35 AM EDT     -0.71 knots Max Ebb
Mon -- 12:26 PM EDT     0.00 knots Slack
Mon -- 03:55 PM EDT     1.02 knots Max Flood
Mon -- 04:31 PM EDT     Moonrise
Mon -- 07:14 PM EDT     -0.00 knots Slack
Mon -- 07:15 PM EDT     Sunset
Mon -- 10:26 PM EDT     -0.96 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-00.30.50.60.50.2-0.2-0.5-0.7-0.7-0.5-0.20.20.60.910.90.60.1-0.4-0.7-0.9-0.9

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 (12,3,4,5)
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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.