Sunday, February24, 2019 L-36.com


Marine Weather and Tides
Naval Academy, 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 6:44AMSunset 5:54PM Sunday February 24, 2019 12:22 AM EST (05:22 UTC) Moonrise 11:52PMMoonset 10:01AM Illumination 77% Phase: Waning Gibbous; Moon at 19 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- 937 Pm Est Sat Feb 23 2019
.small craft advisory in effect from 9 am est Sunday through Sunday afternoon...
.gale warning in effect from Sunday afternoon through Sunday evening...
Rest of tonight..E winds 5 to 10 kt. Waves 1 ft or less. Patchy fog late this evening. Widespread drizzle and rain likely late this evening, then rain. Vsby 1 to 3 nm late this evening.
Sun..S winds 15 to 20 kt with gusts to 30 kt... Becoming W with gusts to 35 kt late. Waves 1 ft...building to 4 ft in the afternoon. Showers.
Sun night..W winds 20 kt with gusts to 40 kt. Waves 4 ft.
Mon..NW winds 15 to 20 kt with gusts to 40 kt. Waves 4 ft.
Mon night..NW winds 10 to 15 kt. Gusts up to 30 kt...diminishing to 20 kt after midnight. Waves 2 to 3 ft.
Tue..NW winds 5 to 10 kt. Waves 1 ft.
Tue night..N winds 5 to 10 kt. Waves 1 ft.
Wed..W winds 5 kt. Waves less than 1 ft.
Thu..NE winds 5 kt. Waves less than 1 ft.
ANZ500 937 Pm Est Sat Feb 23 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will approach the middle mississippi river valley tonight, strengthening as it moves northeastward across the great lakes into canada through Sunday. High pressure will build from the northern great plains toward the great lakes and eventually into the northeast through the first half of next week. Gale conditions are likely overnight Sunday and Monday.


7 Day Forecast for Marine Location Near Naval Academy, MD
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location: 38.99, -76.47     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 240148 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
848 pm est Sat feb 23 2019

Synopsis
Strong low pressure will move northeastward across
the western great lakes this weekend, bringing a warm front
northward into the area by early Sunday. A cold front
approaching from the ohio valley will quickly follow Sunday
afternoon. High pressure will then build from the great lakes
into new england through much of next week. Meanwhile, an area
of low pressure may approach from the ohio valley during the
middle of the week, and again by the end of the week.

Near term until 7 am Sunday morning
Low pressure will move from the central CONUS into the great
lakes tonight. A stationary boundary to its east will be lifted
north as a warm front through tonight, but with surface high
pressure over new england and the parent surface low passing so
far west, our area will remain on the cool side of the boundary.

Much of the steadier light-moderate rain from this afternoon has
ended, with the exception of southern eastern md nearest to
where surface cyclogenesis is occurring offshore and where
strongest forcing remains. However, widespread drizzle, mist,
and low clouds remain and will persist through the evening
before additional moderate rain moves in overnight.

Temperatures remain near freezing in some locations this
evening near ridgelines in portions of eastern WV and western
md, and the winter weather advisory has been extended until
midnight. Some patchy freezing drizzle is also possible near the
catoctins.

The next disturbance will then pass through overnight. A
steadier rain will develop after midnight, and with copious
amounts of moisture in place locally heavy rain is possible. In
fact, a rumble of thunder cannot be ruled out due to elevated
instability. In general another half inch to inch of rain is
expected. Localized flooding remains possible due to saturated
soils and snowmelt, with the highest risk where flood watch
remains in effect.

Short term 7 am Sunday morning through Monday night
Low pressure will move into southern canada and the warm front
will gradually lift through our area during the morning. Rain
and drizzle to start will taper off from west to east during the
morning hours. A strong cold front associated with the low will
pass through the area Sunday afternoon into Sunday evening from
west to east.

Strong winds are expected behind the cold front for much of the
area. A strong pressure gradient combined with a deep mixing
layer and winds around 50-55 knots at the top of the mixing
layer suggests that winds can be quite strong. A high wind
warning is in effect for the blue ridge and catoctin mountains
as well as the allegheny and potomac highlands. Wind gusts
around 60 mph are expected across these areas. Do think that not
quite all of the wind at the top of the mixing layer will make
it into the valleys, since peak heating will be ending around
the time of the maximum pressure gradient. However, it will
still turn out windy with gusts around 45-55 mph across most of
maryland, northern virginia, portions of central virginia and
the valleys in eastern west virginia. Wind advisories are in
effect for these areas.

A strong gradient and cold advection means that Sunday night and
Monday will turn out blustery and cold. Winds may a little for
most areas Sunday night due to the loss of daytime heating.

Therefore, allowed the wind advisories to expire. However, the
high wind warnings continue for the ridges. Another pressure
surge is expected early Monday morning through midday, and more
gusts around advisory criteria (50 mph) are possible across much
of the area. A wind advisory may be needed.

High pressure will build overhead Monday night, causing winds to
diminish but it will remain seasonably cold.

Long term Tuesday through Saturday
Canadian high pressure over the upper midwest on Tuesday will
continue tracking eastward toward our region through midweek, and
with zonal flow aloft, dry weather and below normal temperatures
are forecast. A weak area of low pressure and a subtle
shortwave will track to our north Wednesday night into Thursday,
promoting the potential for upslope rain snow showers. High
pressure is then expected to build to our north through weeks
end. The GFS indicates a potential quick moving shortwave
crossing the area Friday morning delivering a period of
rain snow, however the ECMWF depicts a much stronger high over
the mid atlantic, suppressing any precipitation well to our
south. Will carry low end chance pops for now given the model
discrepancy at day 6 7.

Aviation 02z Sunday through Thursday
Ifr lifr conditions expected overnight into early Sunday morning
in low clouds, drizzle, fog, and rain. CIGS vsbys and drier air
will gradually return later Sunday morning into Sunday
afternoon with improving conditions.

However, strong winds are then expected behind a cold front
Sunday afternoon for kcho and kmrb, and late Sunday afternoon or
early evening for the rest of the terminals. Gusts around 40 to
45 knots are possible. Isolated gusts around 50 knots cannot be
completely ruled out. Winds will diminish some later Sunday
night for most of the terminals, but another uptick in wind
gusts around 40-45 knots are possible Monday morning. Winds will
gradually diminish later Monday afternoon into Monday night as
high pressure builds closer.

PredominantlyVFR conditions expected Tuesday through Wednesday
as canadian high pressure builds toward the region. Dry
conditions and light winds will prevail as a result.

Marine
Winds should remain below SCA criteria tonight. A warm front
will gradually pass through the waters Sunday morning through
midday. A stronger gradient and increasing mixing layer will
cause winds to increase during this time. A small craft advisory
is in effect for the waters. A cold front will pass through late
Sunday afternoon, and stronger winds are expected. Gusts around
40 to 45 knots are likely, and a gale warning is in effect for
the waters late Sunday afternoon through Sunday evening. The
gale warning may need to be extended for overnight Sunday and
Monday as another pressure surge passes through the waters.

Confidence was too low at this time to do so, thinking there may
be a break in the stronger winds for a period late Sunday night.

Winds will gradually diminish late Monday and Monday night as
high pressure builds overhead.

Mainly sub SCA conditions are expected Tuesday through Wednesday as
canadian high pressure builds toward the region, delivering gentle
to moderate northerly breezes.

Hydrology
Highest confidence in higher rainfall totals over an inch and
subsequently the threat for areal flooding is over west-central
virginia tonight, which is where the current flood watch lies.

Further north, rainfall amounts may come in a little shy of an inch,
but saturated ground and or snowmelt lends to a non-zero flood
threat just about everywhere. East of the blue ridge to the i-95
corridor should average near an inch, with slightly higher amounts
possible over southern maryland. Outside of the areal flood watch,
mainstem river flooding may be the biggest threat given these
waterways will be catching all the excess runoff.

Lwx watches warnings advisories
Dc... Wind advisory from 3 pm to 10 pm est Sunday for dcz001.

Md... High wind warning from 10 am Sunday to 10 am est Monday for
mdz501.

High wind warning from 1 pm Sunday to 10 am est Monday for
mdz003-004-502.

Wind advisory from 3 pm to 10 pm est Sunday for mdz005-006-011-
013-014-016>018-503>508.

Winter weather advisory until midnight est tonight for mdz501.

Va... High wind warning from 10 am Sunday to 10 am est Monday for
vaz503-504-507-508.

Flood watch until 6 am est Sunday for vaz025-036-037-503-504-
508.

Wind advisory from 1 pm to 10 pm est Sunday for vaz025>031-
036>040-501-505.

Wind advisory from 3 pm to 10 pm est Sunday for vaz052>054-506.

Wv... High wind warning from 10 am Sunday to 10 am est Monday for
wvz501>503-505-506.

High wind warning from 1 pm Sunday to 10 am est Monday for
wvz050>052-055-504.

Wind advisory from 1 pm to 10 pm est Sunday for wvz053.

Winter weather advisory until midnight est tonight for wvz503.

Marine... Small craft advisory from 9 am to 3 pm est Sunday for
anz532>534-537-540>543.

Gale warning from 3 pm Sunday to midnight est Sunday night for
anz530>543.

Small craft advisory from noon to 3 pm est Sunday for anz530-
531-535-536-538-539.

Synopsis... Bjl
near term... Bjl mm
short term... Bjl
long term... Bkf
aviation... Bjl mm bkf
marine... Bjl mm bkf
hydrology... Dhof bjl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 1 mi53 min 37°F 1019.4 hPa
CPVM2 4 mi53 min 37°F 37°F
TPLM2 - Thomas Point, MD 7 mi23 min N 11 G 12 37°F 38°F1018.9 hPa (-4.4)37°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 16 mi53 min NNE 2.9 G 4.1 37°F 1020 hPa
FSNM2 16 mi53 min N 5.1 G 5.1 36°F 1019.1 hPa
BSLM2 - Chesapeake Bay, MD 19 mi113 min NNE 1 38°F 1021 hPa37°F
BLTM2 - 8574680 - Baltimore, MD 20 mi53 min ENE 2.9 G 4.1 37°F 39°F1019.6 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi53 min NNE 2.9 G 2.9 37°F 40°F1019.6 hPa
WASD2 - 8594900 - Washington, DC 30 mi53 min NNE 2.9 G 8 38°F 41°F1019.3 hPa
CA2 - 8571892 - Cambridge, MD 36 mi53 min 40°F 41°F1018.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 41 mi53 min N 11 G 12 37°F 1019.4 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi53 min NNW 6 G 8 38°F 40°F1018.4 hPa

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, MD1 mi29 minNNE 53.00 miFog/Mist40°F36°F86%1018.3 hPa
Bay Bridge Field, MD7 mi43 minNNW 41.25 miLight Rain Fog/Mist37°F0°F%1019.6 hPa
Baltimore, Baltimore-Washington International Airport, MD17 mi29 minNNE 42.00 miLight Drizzle Fog/Mist37°F36°F96%1018.5 hPa
Fort Meade / Tipton, MD17 mi41 minNNE 33.00 mi36°F33°F93%1019.6 hPa
Baltimore, Inner Harbor, MD21 mi29 minno data mi38°F35°F89%1018.8 hPa
Baltimore / Martin, MD24 mi41 minN 02.00 miHeavy Drizzle37°F37°F100%1020.3 hPa
Camp Springs / Andrews Air Force Base, MD24 mi87 minNNE 55.00 miLight Drizzle Fog/Mist37°F36°F98%1020.9 hPa
College Park Airport, MD24 mi40 minN 04.00 miOvercast36°F34°F96%1019 hPa

Wind History from NAK (wind in knots)
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Last 24hrCalmNE5NE5NE6NE6NE4NE4E5E6E5E3SE4E4N4N5N4NE5N6N5NE8NE5NE6N5N5
1 day agoNW4NW6CalmCalmCalmN3N5NE3N5N6N5N5N3NE3NE6NE3E3CalmCalmCalmCalmN3CalmN3
2 days agoNW4W3W3SW4Calm--NW3--CalmN4N3CalmSE7SE9SE6SE6--CalmSE3CalmN3N5NW5NW6

Tide / Current Tables for U.S. Naval Academy, Annapolis, Maryland
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U.S. Naval Academy
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Sun -- 02:38 AM EST     -0.26 feet Low Tide
Sun -- 06:45 AM EST     Sunrise
Sun -- 09:08 AM EST     0.97 feet High Tide
Sun -- 10:01 AM EST     Moonset
Sun -- 03:24 PM EST     -0.07 feet Low Tide
Sun -- 05:52 PM EST     Sunset
Sun -- 09:10 PM EST     0.73 feet High Tide
Sun -- 11:51 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.1-0.2-0.2-0.10.10.40.70.910.90.80.50.30.1-0.1-0.10.10.30.50.70.70.70.6

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
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Sun -- 02:22 AM EST     -0.91 knots Max Ebb
Sun -- 05:26 AM EST     0.00 knots Slack
Sun -- 06:45 AM EST     Sunrise
Sun -- 08:49 AM EST     1.06 knots Max Flood
Sun -- 10:00 AM EST     Moonset
Sun -- 12:13 PM EST     -0.00 knots Slack
Sun -- 03:16 PM EST     -0.87 knots Max Ebb
Sun -- 05:52 PM EST     Sunset
Sun -- 06:33 PM EST     0.00 knots Slack
Sun -- 09:15 PM EST     0.62 knots Max Flood
Sun -- 11:51 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.7-0.9-0.9-0.6-0.20.30.711.10.90.60.1-0.3-0.7-0.9-0.8-0.6-0.20.20.50.60.60.3

Weather Map and Satellite Images
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Wind Forecast for Baltimore, MD/Washington (0,6,7,8)
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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.