Wednesday, April25, 2018

Marine Weather and Tides
Madison, MD

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:11AMSunset 7:52PM Wednesday April 25, 2018 2:13 PM EDT (18:13 UTC) Moonrise 2:22PMMoonset 3:03AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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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ANZ533 Chesapeake Bay From North Beach To Drum Point- 134 Pm Edt Wed Apr 25 2018
.small craft advisory in effect from 9 pm edt this evening through Thursday morning...
This afternoon..N winds 5 kt. Waves less than 1 ft. A chance of rain and drizzle. Patchy fog. Vsby 1 to 3 nm.
Tonight..NW winds 5 to 10 kt. Gusts up to 20 kt in the late evening and overnight. Waves 1 to 2 ft. A chance of showers. Patchy fog. Vsby 1 to 3 nm.
Thu..NW winds 10 to 15 kt with gusts to 20 kt... Becoming sw 5 kt late. Waves 1 to 2 ft.
Thu night..S winds 5 to 10 kt. Waves 1 ft. Rain.
Fri..S winds 5 to 10 kt. Waves 1 ft. Rain.
Fri night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sat..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sun..NW winds 5 to 10 kt. Waves 1 to 2 ft.
ANZ500 134 Pm Edt Wed Apr 25 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will pass through the waters today. High pressure will approach the waters tonight before settling overhead Thursday. Low pressure will approach the waters Thursday night before passing through Friday. A cold front will pass through Saturday and high pressure will return for early next week.

7 Day Forecast for Marine Location Near Madison, MD
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location: 38.49, -76.22     debug

Area Discussion for - Wakefield, VA
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Fxus61 kakq 251738
area forecast discussion
national weather service wakefield va
138 pm edt Wed apr 25 2018

Low pressure tracks across virginia today, then moves away from
the coast tonight. Weak high pressure returns Thursday. Another
area of low pressure crosses the local area late Thursday night
through Friday.

Near term until 6 pm this evening
As of 130 pm edt Wednesday...

upper level low over central eastern va this afternoon will
slowly lift NE thru early evening, and will be accompanied by
sct-likely shras. Best likelihood appears to be south east of
the ric metro, especially south-central va into the va
tidewater hampton roads NE nc. Models suggest enough instability
available as the cold pool aloft crosses the local area (esp
srn SE va-ne nc) for possible (isold) tstms. Highs this
afternoon from the mid 60s NW to the low mid 70s se.

Short term 6 pm this evening through Saturday
As of 345 am edt Wednesday...

lo pres (sfc-aloft) exits the region this eve resulting in
lowering pops. Will continue W trend of lowering pops sw-ne
this eve... Then drying begins overnight. Expecting some
lingering moisture over far SRN SE areas of the fa into thu
morning. Lows from around 50f NW to the m50s se.

A brief break from the unsettled wx thu... Though expecting
clouds to begin arriving increasing from the ssw as the next
area of lo pres tracks through tn NRN al NRN ga. Have held off
on raising pops above 14% over the (sw portion of the) fa
through 00z 27. Highs Thu mainly 70-75f.

A quick increase in pops (to 50-80%) Thu night as lo pres enters
the fa from the sw. Keeping pops 50-70% NE half of the fa fri
morning... Tapering to 20-30% sw. The lo pres area lifts to the
ne of the local area Fri afternoon... However will be keeping
20-30% as a lo pres trough remains INVOF the fa.

Otherwise... Mostly cloudy then partly sunny fri... W highs from
the u60s-around 70f N to the m70s se.

Long term Saturday night through Tuesday
As of 400 pm edt Tuesday...

gfs ECMWF differ early in this period with the GFS showing the last
in a series of S W trofs rounding the base of the long wave trof
late Fri night with it moving off the sern coast Sat ahead of a weak
frontal passage. Meanwhile, the ECMWF is drier with little if any
support for pcpn even with the frontal passage sat. A model blend
results in low chc shwrs across the sern zones late Fri night and
sat keeping the rest of the local area dry for now. Lows Fri nite
upr 40s-mid 50s. Highs Sat upr 60s-mid 70s, cooler at the beaches.

After that, some delightful spring weather on tap early next week as
high pressure builds SE from the gt lakes region Sun to a position
over the local area Mon then off the mid atlantic coast tue. Cool to
start then a warming trend. Highs Sun generally in the 60s. Lows in
the 40s to near 50 se. Highs Mon upr 60s-lwr 70s. Lows upr 40s-lwr
50s. Highs Tue 75-80.

Aviation 18z Wednesday through Monday
As of 130 pm edt Wednesday...

MVFR to ifr CIGS to linger at kric kphf thru 20z or so before
improving. Otherwise, vrb clouds mostly cloudy the rest of the
afternoon. Will continue W sct-likely shras and there could be
isold tstms as the cold pool aloft crosses the region from
about 18z 25-00z 26. Have included tempo groups at phf orf to
indicate highest confidence in shras, from about 20-23z. Wx
will be slow to improve tonight as low pres finally moves away
to the ene.VFR conditions expected Thu as weak hi pres returns.

Another area of lo pres will impact the region by late thu
night into Fri afternoon W flight restrictions likely due to
lower bkn-ovc CIGS and shras. MainlyVFR conditions expected

As of 1155 am edt Wednesday...

fog has lifted across the bay and rivers and is improving over
the ocean from parramore island and points north. Updated to
allow dense fg advisory to expire, though will mentions 1-3nm
vsbys this aftn N a of parramore island. SCA remains in effect
for the ocean into Thu with lingering long period swell of 10-12
sec. Also have extended through 4pm for the mouth of the bay for
4 ft waves. Waves 1-2 ft or less for the rest of the bay rivers sound.

Broad low pressure was cntrd over south central va late this morning.

This low will continue to lift NE and acrs ERN va, the
delmarva, and into new jersey this aftn through tonight. Ssw
5-15 kt during today (genly <10 kt over the bay and rivers),
then become W then NW 10-15 kt throughout the marine area
later tonight into Thu morning. The low will move farther away
to the NE later tonight into thu, as weak high pressure builds
in fm the nnw. Waves seas will subside later today thru thu.

Another low pressure area will affect the waters Thu night thru
fri, as it tracks fm the SE u.S. Northeast acrs va and into new

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... Small craft advisory until 4 pm edt this afternoon for anz634.

Small craft advisory until 6 pm edt Thursday for anz650-652-

Small craft advisory until 10 am edt Thursday for anz656-658.

Synopsis... Alb
near term... Alb jdm
short term... Alb
long term... Mpr
aviation... Alb jdm
marine... Lkb tmg

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CA2 - 8571892 - Cambridge, MD 10 mi43 min 66°F 55°F1006.3 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 11 mi43 min N 8 G 12 55°F 1006.3 hPa
44062 - Gooses Reef, MD 11 mi33 min N 5.8 G 7.8 55°F 1006.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 17 mi43 min SW 1.9 G 2.9 58°F 54°F1005.5 hPa
BISM2 - 8571421 - Bishops Head, MD 21 mi43 min SSE 5.1 G 5.1 60°F 57°F1006 hPa
TPLM2 - Thomas Point, MD 30 mi73 min NNE 8 G 8.9 57°F 53°F1007.1 hPa (-1.5)57°F
PPTM2 - 8578240 - Piney Point, MD 30 mi43 min SW 1 G 1.9
44042 - Potomac, MD 32 mi33 min ESE 3.9 G 3.9 57°F 1007.2 hPa
BSLM2 - Chesapeake Bay, MD 33 mi103 min N 1.9 56°F 1006 hPa55°F
CPVM2 36 mi43 min 56°F 56°F
APAM2 - 8575512 - Annapolis, MD 37 mi43 min 64°F 1005.3 hPa
LWTV2 - 8635750 - Lewisetta, VA 37 mi43 min ESE 4.1 G 4.1 58°F 55°F1005.8 hPa
NCDV2 45 mi43 min NNW 6 G 9.9 60°F 56°F1005.2 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, MD11 mi78 minNNW 510.00 miOvercast64°F60°F88%1005.8 hPa
Patuxent River, Naval Air Station, MD17 mi81 minNNW 43.00 miFog/Mist64°F60°F87%1005.7 hPa
St Marys County Airport, MD21 mi76 minNNW 410.00 miOvercast61°F60°F100%1006.4 hPa
Easton / Newman Field, MD23 mi83 minN 310.00 miOvercast66°F59°F78%1007.1 hPa

Wind History from CGE (wind in knots)
Last 24hrSE18SE18SE13
1 day agoSW9S7
2 days agoSE6CalmS8S11S8

Tide / Current Tables for Woolford, Church Creek, Little Choptank River, Maryland
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Wed -- 12:04 AM EDT     1.77 feet High Tide
Wed -- 04:03 AM EDT     Moonset
Wed -- 06:15 AM EDT     Sunrise
Wed -- 07:03 AM EDT     0.34 feet Low Tide
Wed -- 12:38 PM EDT     1.86 feet High Tide
Wed -- 03:22 PM EDT     Moonrise
Wed -- 07:46 PM EDT     0.41 feet Low Tide
Wed -- 07:50 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Cove Point (1.1 mi. NE of), Maryland Current
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Cove Point (1.1 mi. NE of)
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Wed -- 02:52 AM EDT     -0.00 knots Slack
Wed -- 04:03 AM EDT     Moonset
Wed -- 06:00 AM EDT     -0.49 knots Max Ebb
Wed -- 06:16 AM EDT     Sunrise
Wed -- 08:42 AM EDT     0.00 knots Slack
Wed -- 11:40 AM EDT     0.55 knots Max Flood
Wed -- 02:59 PM EDT     -0.00 knots Slack
Wed -- 03:23 PM EDT     Moonrise
Wed -- 06:25 PM EDT     -0.63 knots Max Ebb
Wed -- 07:51 PM EDT     Sunset
Wed -- 09:22 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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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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wakefield, VA (14,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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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.