Thursday, May25, 2017

Marine Weather and Tides
Sharp, MD

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:41AMSunset 8:17PM Thursday May 25, 2017 12:54 AM EDT (04:54 UTC) Moonrise 4:51AMMoonset 7:09PM Illumination 0% Phase: New Moon; Moon at 29 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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ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 1031 Pm Edt Wed May 24 2017
.small craft advisory in effect through late Thursday night...
Rest of tonight..E winds 15 kt with gusts to 25 kt. Waves 2 ft. Rain. A slight chance of tstms. Vsby 1 to 3 nm.
Thu..S winds 10 to 15 kt. Gusts up to 25 kt. Waves 2 ft. Numerous showers and scattered tstms.
Thu night..W winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft. A chance of showers.
Fri..W winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Fri night..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sat..W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Sat night..SE winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Sun..S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Mon..W winds 5 to 10 kt. Waves 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1031 Pm Edt Wed May 24 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will pass through the waters late tonight into Thursday. The cold front associated with this low will move through the area Thursday night. High pressure will build overhead Friday through Friday night before moving off the mid-atlantic coast Saturday. A warm front will stall out near the waters later Saturday and Sunday before a stronger cold front possibly moves through on Monday. Small craft advisories may be needed for portions of the waters Friday through Friday evening.

7 Day Forecast for Marine Location Near Sharp, MD
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location: 38.55, -75.72     debug

Area Discussion for - Wakefield, VA
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Fxus61 kakq 250306
area forecast discussion
national weather service wakefield va
1106 pm edt Wed may 24 2017

Unsettled conditions return this evening through Thursday as an
upper level trough approaches from the west. Conditions improve
on Friday.

Near term until 6 am Thursday morning
Latest GOES water vapor imagery centers deep anomalous low
pressure over the lower ohio river valley, with a plume of
moisture spreading northward along the southeast coast.

Precipitable waters, per latest gps precipitable waters, are
progged around 1.6 to 1.8 inches (150%+ of normal). At the
surface, a warm front remains just south of the local area with
an area of low pressure developing along the lee side of the
appalachians. The combination of strong dynamics, a moist air
mass, and forcing along the warm front has resulted in
widespread showers across the region this evening. The brunt of
the showers has pushed north of interstate 64 late this evening.

However, more showers are expected through the overnight period
as a potent shortwave ejects northeast from the deep south into
the southeast. The warm front lifts northward along the coast as
a meso-low develops over the forecast area ahead of the height
falls. A trailing cold front crosses the area late tonight.

These features will be the focus for additional showers through
the overnight period. Categorical pops continue. A line of more
organized showers is stretching along the cold front from near
roanoke southward toward the florida georgia line. As the warm
front lifts northward after midnight, rap hrrr guidance
indicates theta-e advection and warming temperatures dewpoints
will result in marginal instability across the southeast local
area. In addition to 30-40 knots of shear, the approaching line
of showers could be enhanced across the southeast forecast area.

Wind gusts of 30-40 mph and small hail cannot be ruled out along
the line. Drying conditions expected behind the front late
tonight, before additional chances for showers thunderstorms
Thursday. Temperatures will remain generally in the low to mid
60's through the overnight, even warming a few degrees across
the southeast.

Short term 6 am Thursday morning through Saturday
Upper low begins to lift NE across the mountains Thursday. A
strong shortwave trough will lift across the mid-atlantic
during the afternoon early evening. Once again pops increase... To
~60-70% from the piedmont to central va to the md ERN shore,
with 40-50% far se. 500mb flow of 45-55 kt is expected along
with modest instability. Therefore... A few stronger to
marginally severe storms are possible. The main threat would be
wind and hail as low-level shear is minimal but a decent cold
pool aloft will exist. Additional QPF Thu aftn evening should
average up to ~0.25" with locally higher amounts possible. Highs
thu in the m70s W of I 95 to the l80s across eastern portions
of the fa.

The upper low continues to lift NE across pa ny new england
late Thu night into fri. Drier conditions finally arrive as
deep layered wnw flow develops over the region. Some lingering
mid-level energy could result in sct-bkn CU mid afternoon fri.

Otherwise... Drier and breezy with highs in the u70s to l80s,
after morning lows in the m50s W to l60s at the coast.

Weak ridge aloft nudges into the region from the wsw Fri night
into sat. Differing potential timing in arrival of weak S w
tracking into the fa by Sat afternoon. Combination of daytime
heating and that S W in wnw flow aloft may result in at least
sct convective development. Otherwise... Partly cloudy fri
night-sat morning... Then becoming mostly cloudy Sat afternoon.

Lows from the u50s NW to the l60s se. Highs Sat from the m70s-
around 80f on the eastern shore to the m80s inland.

Long term Saturday night through Wednesday
Long term period starts off Sat night into Sun with a warm front in
the vicinity and plenty of energy passing through the wnw flow
aloft. This will lead to a chance of shras tstms everywhere, with
low temps in the 60s Sat night and high temps in the low mid 80s
sun. Continued chance of rain into Mon with a weak cold front
passing through the area. Highs again in the low mid 80s. Drier
weather into Tue and Wed behind the front, but still cannot rule out
the chance of a shra or TSTM with continued cyclonic flow aloft.

High temps in the upr 70s to mid 80s both days.

Aviation 03z Thursday through Monday
MVFR ifr conditions across the CWA and TAF sites with east flow
and lots of moisture over the region. A low pressure system
over the tn valley continues to bring lots of moisture and
precipitation over the mid atlantic region. A warm front just
south of the va border is helping to induce some convection as
the moisture moves north. The rain and thunderstorms will
prevail over the area through the night and into Thu morning.

Widespread ifr ceilings are expected during the overnight. The
low will lift into the oh valley by Thu afternoon and the precip
will move north and east of the region. Some scattered showers
will again be possible Fri afternoon but MVFRVFR conditions
across the region.

DrierVFR wx returns by Fri as weak high pressure builds over
the region. Unsettled conditions return for the weekend when
another frontal boundary affects the mid atlantic states.

Latest sfc analysis shows a low pres system centered over the oh
valley with a warm front stretching across the va-nc border. The
front slides north tonight, and with an increasing pres
gradient, expect SCA winds to commence over the bay late. Also
expect seas to build up to 5 ft out 20 nm late. For thu, a weak
cold front crosses the area, and SW flow may come close to sca
thresholds over the bay. Decided to just continue the headlines
there through Thu night since winds may ramp up again then.

Also, seas may continue to meander around 5 ft out 20 nm. Will
end headlines at the end of the third period attm. Lwr james and
currituck sound may potentially need to be added to the sca
thu Thu night as well. Weak high pres then builds in for fri
leading to improving marine conditions. Sub-sca conditions
expected to continue into the weekend.

Tides coastal flooding
A period of onshore flow and high astro tides (moving toward a
new moon) will result in elevated water levels through Friday.

Issued several coastal flood advisories and statements for
tonight's high tide cycle... Refer to cfwakq for more details.

Akq watches warnings advisories
Md... Coastal flood advisory until 6 am edt Thursday for mdz021>023.

Nc... None.

Va... Coastal flood advisory until 3 am edt Thursday for vaz089-090-

Marine... Small craft advisory until 7 am edt Friday for anz630>632-634-

Synopsis... Jdm
near term... Sam
short term... Alb jdm
long term... Mas
aviation... Alb jef
marine... Mas
tides coastal flooding...

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 19 mi55 min 58°F 67°F
BISM2 - 8571421 - Bishops Head, MD 28 mi55 min E 16 G 19 58°F 64°F1005.6 hPa (-1.3)
BTHD1 36 mi175 min 4 ft
LWSD1 - 8557380 - Lewes, DE 36 mi55 min E 15 G 19 56°F 63°F1006.9 hPa (-0.9)
OCSM2 37 mi175 min 4 ft
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi55 min SE 16 G 21 57°F 1006.1 hPa (-1.3)
44062 - Gooses Reef, MD 37 mi45 min SE 18 G 19 59°F 1006.2 hPa
DRSD1 - Delaware Reserve, DE 40 mi100 min ESE 5.1 58°F 1008 hPa56°F
SLIM2 - 8577330 - Solomons Island, MD 42 mi55 min E 20 G 22 59°F 66°F
TPLM2 - Thomas Point, MD 45 mi55 min ESE 14 G 16 58°F 64°F
CPVM2 47 mi55 min 59°F 57°F
44063 - Annapolis 48 mi45 min ESE 14 G 18 58°F 1006 hPa
44042 - Potomac, MD 48 mi45 min E 18 G 21 60°F 1003.7 hPa

Wind History for Cambridge, MD
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cambridge-Dorchester Airport, MD16 mi65 minE 85.00 miFog/Mist57°F55°F94%1006.1 hPa
Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD19 mi61 minE 128.00 miLight Rain56°F55°F97%1006.9 hPa
Georgetown - Delaware Coastal Airport, DE22 mi61 minE 11 G 2010.00 miOvercast57°F54°F90%1006.9 hPa

Wind History from CGE (wind in knots)
Last 24hrNE6N544N5NE6N5N4N5N3NE3NE6E5E7SE8E8E8E9
1 day agoN7----CalmN5N4N4NE4E5
2 days agoE3CalmCalmN5NE5NE3N3CalmNE4CalmCalmCalmCalmCalmCalmCalmN4CalmCalmN3NW4CalmN6N6

Tide / Current Tables for Sharptown, Nanticoke River, Chesapeake Bay, Maryland
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Thu -- 05:15 AM EDT     3.34 feet High Tide
Thu -- 05:43 AM EDT     Sunrise
Thu -- 05:51 AM EDT     Moonrise
Thu -- 11:48 AM EDT     -0.37 feet Low Tide
Thu -- 03:46 PM EDT     New Moon
Thu -- 05:43 PM EDT     2.78 feet High Tide
Thu -- 08:08 PM EDT     Moonset
Thu -- 08:16 PM EDT     Sunset
Thu -- 11:49 PM EDT     -0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Salisbury, Maryland (2 miles below) Current
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Thu -- 12:01 AM EDT     1.06 knots Max Flood
Thu -- 03:40 AM EDT     -0.00 knots Slack
Thu -- 05:43 AM EDT     Sunrise
Thu -- 05:51 AM EDT     Moonrise
Thu -- 06:53 AM EDT     -1.15 knots Max Ebb
Thu -- 10:02 AM EDT     0.00 knots Slack
Thu -- 12:32 PM EDT     0.72 knots Max Flood
Thu -- 03:23 PM EDT     -0.00 knots Slack
Thu -- 03:46 PM EDT     New Moon
Thu -- 06:49 PM EDT     -1.25 knots Max Ebb
Thu -- 08:07 PM EDT     Moonset
Thu -- 08:15 PM EDT     Sunset
Thu -- 09:51 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Mid-Atlantic    EDIT

Wind Forecast for Wakefield, VA (0,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 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 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.