Wednesday, August22, 2018 L-36.com


Marine Weather and Tides
Shady Side, MD

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:25AMSunset 7:52PM Wednesday August 22, 2018 12:34 AM EDT (04:34 UTC) Moonrise 4:40PMMoonset 1:49AM Illumination 82% Phase: Waxing Gibbous; Moon at 11 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- 1034 Pm Edt Tue Aug 21 2018
.small craft advisory in effect until 6 am edt Wednesday...
.small craft advisory in effect from Wednesday evening through late Wednesday night...
Rest of tonight..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Numerous showers and scattered tstms late this evening, then a slight chance of showers.
Wed..W winds 10 kt. Waves 1 to 2 ft. A chance of showers.
Wed night..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Thu..N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Thu night..N winds 5 to 10 kt. Waves 1 ft.
Fri..E winds 5 kt. Waves flat.
Fri night..S winds 5 kt. Waves less than 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft or less.
Sun..SE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1034 Pm Edt Tue Aug 21 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will lift northward through this evening, followed by a cold front late tonight into Wednesday. A strong area high pressure will then take hold through week's end.


7 Day Forecast for Marine Location Near Shady Side, MD
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location: 38.86, -76.46     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 220138
afdlwx
area forecast discussion
national weather service baltimore md washington dc
938 pm edt Tue aug 21 2018

Synopsis
A warm front will lift north across the mid-atlantic this
afternoon, followed by a cold front moving west to east tonight.

A secondary cold front will follow Wednesday. Strong high
pressure will build in from the ohio valley Thursday, then cross
the region Friday into the weekend.

Near term until 6 am Wednesday morning
A weak boundary remains over northern maryland this evening and
a south to southwest flow throughout the lower and upper-
levels of the atmosphere has ushered in plenty of moisture
across the entire area. The deep moisture along with warm
conditions led to an unstable atmosphere this afternoon and
evening. Forcing from an upper-level disturbance along with
boundaries from convection caused plenty of showers and
thunderstorms during this time. The upper-level disturbance is
passing through the area this evening, and this system will be
the focal point for the heavier showers and thunderstorms along
with the weak surface boundary. The most widespread activity
will be across north-central and northeastern maryland (near the
weak surface boundary) with isolated and scattered convection
possible elsewhere.

Drier air and subsidence will continue to work its way across
our area from west to east overnight behind the upper-level
disturbance. This will cause convection to dissipate. Warm and
humid conditions will persist overnight ahead of an approaching
cold front from the great lakes. Patchy fog and low clouds are
possible as well. Do think a tightening gradient will keep fog
more patchy instead of widespread, despite the recent rainfall
and high dewpoints. Lows tonight will be in the 60s 70s.

Short term 6 am Wednesday morning through Thursday night
A secondary shortwave and associated surface cold front will cut
across the great lakes and then traverse the mid-atlantic on
Wednesday. Low-level flow should be northwesterly by this time,
reducing the risk of deeper convection, but gusty showers seem
plausible given the potency of the upper wave. Highs will range
from 80 to 85f.

After the passage of this secondary front, a strong late summer high
pressure system will build in from the ohio valley on Thursday. High
temperatures will only reach the upper 70s to around 80f with
lows Thursday night falling into the 50s 60s.

Long term Friday through Tuesday
On Friday, a high pressure system will be in be in place over the
region. Winds will be light out of the west to northwest. Skies will
remain mostly clear. Day time temperatures will be mild in the upper
70s to lower 80s.

Saturday into Sunday, a weak shortwave trough will move through the
region over the weekend. High pressure is expected to be in place
over most of the region with a westerly flow. The westerly flow will
lead to up slope flow on the west side of the mountains. The best
chance for precipitation will be on the western side of the blue
ridge. The westerly flow will help keep most areas dry through
out our region. Day time temperatures will rise up into the low
to mid 80s on Saturday and into the mid to upper 80s on Sunday.

On Monday, a large broad upper level 500mb ridge will be in place
over the eastern united states. Skies will be mostly clear with
temperature reaching the upper 80s to low to mid 90s. Winds will be
west to southwesterly.

Aviation 02z Wednesday through Sunday
Showers and thunderstorms across the northeastern terminals and
kcho will dissipate overnight behind an upper-level disturbance.

Patchy fog is possible overnight into early Wednesday due to the
recent rainfall and high dewpoints. However, latest thinking is
that fog will be patchy and not widespread due to a
strengthening pressure gradient, causing light winds to persist
overnight.

A popup shower or thunderstorm is possible later Wednesday
morning and afternoon, but coverage will be isolated scattered
due to drier air moving in from the north and west.

For Thursday and Friday, high pressure will be in place leading
to light winds out of the north and mostly clear skies.VFR
conditions expected.

On Saturday, a weak boundary will try to approach from the west. A
westerly flow will limit moisture levels and focus any precip that
develops to the western side of the blue ridge. Winds will be light
out of the west with mostly clear skies.VFR condtions expected.

Marine
Small craft advisory is in effect into Wednesday morning for
portions of the tidal potomac and middle and lower chesapeake
bay.

Winds should be largely sub-sca on Wednesday, but gusty showers
are possible Wednesday as well as a secondary cold front
crosses. A surge of northerly winds is expected again Wednesday
night and a SCA has been issued.

Sub-sca conditions are then expected Thursday through Saturday.

Tides coastal flooding
Onshore flow has promoted tidal anomalies between 1 and 2 feet,
which will likely be maintained as southerly flow increases
ahead of a cold front. Coastal flood advisories have been issued
for most locations along the western shore of the bay and upper
tidal potomac river overnight into Wednesday morning. Will have
to keep an eye on havre de grace, but winds will be turning more
westerly toward the time of high tide Wednesday morning.

Therefore, an advisory has not been issued at this time. Will
also have to watch for possible moderate flooding at annapolis,
but with the winds turning more west of south
overnight... Confidence was too low for a warning.

A northwest flow will develop later Wednesday and anomalies will
drop.

Lwx watches warnings advisories
Dc... Coastal flood advisory until 9 am edt Wednesday for dcz001.

Md... Coastal flood advisory until 4 am edt Wednesday for mdz018.

Coastal flood advisory from 2 am to 9 am edt Wednesday for
mdz011.

Coastal flood advisory until 10 am edt Wednesday for mdz014.

Coastal flood advisory until 3 am edt Wednesday for mdz017.

Va... Coastal flood advisory until 9 am edt Wednesday for vaz054.

Wv... None.

Marine... Small craft advisory until 6 am edt Wednesday for anz532-533-
540>542.

Small craft advisory from 11 pm Wednesday to 6 am edt Thursday
for anz532>534-537-540>543.

Small craft advisory until 10 am edt Wednesday for anz534-537-
543.

Synopsis... Bjl mm
near term... Bjl mm
short term... Mm
long term... Jmg
aviation... Bjl mm jmg
marine... Bjl mm jmg
tides coastal flooding...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 3 mi94 min SW 8 G 9.9 77°F 79°F1011.9 hPa (+0.0)75°F
44063 - Annapolis 8 mi34 min WNW 3.9 G 5.8 76°F 80°F1009.6 hPa (+0.0)
APAM2 - 8575512 - Annapolis, MD 9 mi34 min 76°F 1010.1 hPa (-0.8)
CPVM2 10 mi34 min 76°F 76°F
BSLM2 - Chesapeake Bay, MD 14 mi124 min S 2.9 67°F 1011 hPa67°F
44062 - Gooses Reef, MD 21 mi34 min WSW 16 G 21 79°F 81°F1 ft1010.7 hPa (-1.7)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 25 mi34 min NNE 2.9 G 2.9 72°F 1010.1 hPa (-0.3)
FSNM2 25 mi34 min WNW 2.9 G 5.1 72°F 1010.3 hPa (+0.0)
TCBM2 - 8573364 - Tolchester Beach, MD 27 mi34 min N 8.9 G 11 74°F 80°F1010.4 hPa (-1.0)
BLTM2 - 8574680 - Baltimore, MD 29 mi34 min NW 1.9 G 2.9 71°F 82°F1010.1 hPa (-0.5)
CA2 - 8571892 - Cambridge, MD 29 mi34 min 77°F 83°F1011.3 hPa (-1.5)
WASD2 - 8594900 - Washington, DC 30 mi40 min WNW 2.9 G 5.1 76°F 80°F1010.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 32 mi34 min SW 16 G 19 78°F 1010.9 hPa (-1.5)
SLIM2 - 8577330 - Solomons Island, MD 37 mi34 min SSW 14 G 18 78°F 82°F1010.3 hPa (-1.3)
NCDV2 48 mi34 min SW 8 G 9.9 77°F 81°F1009.7 hPa (-1.1)

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, MD8 mi40 minno data10.00 miOvercast76°F73°F91%1010.5 hPa
Bay Bridge Field, MD11 mi59 minSSW 310.00 miOvercast77°F75°F94%1010.5 hPa
Easton / Newman Field, MD21 mi47 minSSW 57.00 miPartly Cloudy76°F74°F95%1011.8 hPa
Camp Springs / Andrews Air Force Base, MD22 mi98 minS 710.00 miLight Rain74°F73°F98%1011.3 hPa
Fort Meade / Tipton, MD23 mi61 minN 310.00 miOvercast72°F69°F94%1011.5 hPa

Wind History from ESN (wind in knots)
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Last 24hrSE4--SE4CalmE4E3SE5SE8SE8SE10SE10
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1 day agoE6E5NE6NE8NE7NE7NE7E6--NE8E8NE8E7E6E8SE5E7SE4E5E4SE5SE3SE4E5
2 days agoCalmN3N4CalmN4N4N8N5NE6NE6N5N5N6NW6NE6NE5NE6E7E5E8E6E7E7E8

Tide / Current Tables for Shady Side, West River, Maryland
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Shady Side
Click for Map
Wed -- 02:49 AM EDT     Moonset
Wed -- 02:54 AM EDT     1.51 feet High Tide
Wed -- 06:26 AM EDT     Sunrise
Wed -- 10:17 AM EDT     0.57 feet Low Tide
Wed -- 02:44 PM EDT     0.99 feet High Tide
Wed -- 05:39 PM EDT     Moonrise
Wed -- 07:51 PM EDT     Sunset
Wed -- 08:48 PM EDT     0.41 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.31.51.51.51.31.210.80.60.60.60.70.9110.90.80.70.50.40.40.50.6

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Wed -- 02:48 AM EDT     Moonset
Wed -- 02:57 AM EDT     0.98 knots Max Flood
Wed -- 06:25 AM EDT     Sunrise
Wed -- 06:26 AM EDT     -0.00 knots Slack
Wed -- 09:43 AM EDT     -0.88 knots Max Ebb
Wed -- 01:21 PM EDT     0.00 knots Slack
Wed -- 03:49 PM EDT     0.46 knots Max Flood
Wed -- 05:39 PM EDT     Moonrise
Wed -- 06:26 PM EDT     -0.00 knots Slack
Wed -- 07:50 PM EDT     Sunset
Wed -- 09:24 PM EDT     -0.57 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.60.910.90.60.2-0.2-0.6-0.8-0.9-0.7-0.5-0.10.20.40.50.40.1-0.2-0.4-0.6-0.5-0.4

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 (0,6,7,8)
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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.