Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Elkton, MD

Version 3.4
What's New / NOTES
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.
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 5:37AMSunset 8:36PM Wednesday June 28, 2017 2:56 AM EDT (06:56 UTC) Moonrise 9:45AMMoonset 11:07PM Illumination 18% Phase: Waxing Crescent; Moon at 4 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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ANZ530 Chesapeake Bay North Of Pooles Island- 131 Am Edt Wed Jun 28 2017
.small craft advisory in effect from this evening through late tonight...
Overnight..NW winds 10 kt. Waves 1 ft.
Wed..SW winds 5 to 10 kt. Waves 1 ft.
Wed night..S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Thu..S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Thu night..SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Fri..SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Fri night..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sun..W winds 5 kt. Waves less than 1 ft. A chance of tstms in the morning. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 131 Am Edt Wed Jun 28 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A weak cold front will cross the chesapeake bay region tonight. High pressure will move over the area Wednesday before shifting to bermuda through Thursday. Small craft advisory conditions are possible over portions of the waters Thursday.

7 Day Forecast for Marine Location Near Elkton, MD
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location: 39.57, -75.85     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 280559
afdphi
area forecast discussion
national weather service mount holly nj
159 am edt Wed jun 28 2017

Synopsis
High pressure builds over the mid- atlantic region through
today. The high will move offshore Thursday and Friday, returning
our area to southwest flow. Another weak cold front is expected
this weekend, bringing a chance of showers through early next
week, especially if the front stalls.

Near term through today
Early this morning... Mostly clear. Light northwest winds.

Today... Sunny or mostly sunny and comfortably cool for summer
with few or sct sc 16z- 21z AOA 5000 ft, mainly northwest of
i-95. West northwest wind gusting 15-20 mph this morning
becoming more westerly this afternoon and diminishing slightly.

Dewpoints in the 40s while MAX temps 2 to 7 degrees below
normal. One of the nicest days we'll see for quite a while.

Forecast basis: a 50 50 blend of the 00z 28 GFS nam mos.

Short term tonight
Tonight... Mostly clear with some cirrus after midnight, especially
northwest of i-95. Lowered 50 50 blended 00z 28 mos GFS nam temps
a degree or two from that guidance due to light wind. These
temps 1 to 4 degrees below normal.

Long term Thursday through Tuesday
The long term starts out with surface high pressure just off
the mid-atlantic coast and associated fairly pleasant weather.

However as the high moves farther offshore and low pressure
moves into the great lakes, a more typical summertime SW flow
will set up over the region. This in turn will cause increasing
heat and humidity over the forecast area through the end of the
week and into the weekend. At this point it appears that
Saturday may be the most uncomfortable day with heat indices
reaching the mid 90s along the i-95 urban corridor.

Along with more heat and humidity will be gradually increasing
chances for afternoon showers and thunderstorms. For Thursday
and Friday it looks like any precip should remain well to the
northwest of phl. By Saturday an upper-level trof and associated
cold front are forecast to approach the mid-atlantic and also a
surface trof is forecast to develop from eastern pa south
to near the chesapeake bay. Enhanced low-level convergence is
expected to result in more widespread afternoon convection on
Saturday.

For Sunday and beyond the forecast becomes more cloudy, as the
models seem to disagree on whether a surface cold front can push
through our area or whether it will stall out. Given the
uncertainty, the forecast maintains at least a slight chance for
showers t-storms through early next week. Temperatures are
expected to be near or slightly above normal at that time.

Aviation 06z Wednesday through Sunday
The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg,
kmiv, kacy and surrounding areas.

Through today... .Vfr. Few or sct clouds AOA 6000 ft. West northwest
wind gust around 15 kts.

Tonight...VFR. Broken cirrus probably arrives toward dawn Thursday.

Light southwest wind.

Outlook...

Thursday and Friday...VFR conditions expected. Southwest winds
gusting up to 20 kt in the afternoon both days.

Saturday and Sunday... MostlyVFR conditions but lower at times
in scattered mainly afternoon showers and thunderstorms.

Marine
Sca issued around 140 am for de bay early this morning where
widespread gusts 25-30 kt. These gusts should diminish toward
dawn.

Otherwise, no headlines through tonight. Northwest wind gust
15-20 kt at times during the daylight hours becomes south to
southwest late this afternoon and continues tonight. Gusts to 25
kt possible late this afternoon nnj waters.

Outlook...

Thursday and Friday... SCA conditions may develop Thursday afternoon
and continue into Friday due to increasing SW winds and building
seas.

Saturday and Sunday... Winds and seas are expected to be somewhat
below SCA levels.

Rip currents... The forecast is for a low risk of rip currents
for Wednesday. However, southwest winds will increase to around
15 kts with higher gusts by late afternoon. With a 9-second
period from a southeasterly direction, this may increase the rip
current risk level, especially on the new jersey coast.

Climate
At 5 am: we will finish off the marginally warmer than normal
month of june temperature assessment (except kmpo).

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Small craft advisory until 6 am edt early this morning for
anz430-431.

Synopsis... Amc drag 2a
near term... Drag 2a
short term... Drag 2a
long term... Amc
aviation... Amc drag 2a
marine... Amc drag 2a
climate... 2a


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 4 mi38 min SSE 1 G 1.9 59°F 82°F1019.3 hPa
44057 - Susquehanna, MD 12 mi36 min NW 7.8 G 9.7 67°F 1018.8 hPa
DELD1 - 8551762 - Delaware City, DE 14 mi38 min WNW 5.1 G 7 63°F 76°F1018.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 15 mi38 min 65°F 79°F1018.4 hPa
MRCP1 - 8540433 - Marcus Hook, PA 28 mi38 min 64°F 1018 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 31 mi38 min NNW 13 G 16 68°F 77°F1018.1 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 32 mi38 min N 9.9 G 13 69°F 78°F1019.6 hPa
DRSD1 - Delaware Reserve, DE 40 mi146 min NW 1.9 68°F 1018 hPa51°F
44043 - Patapsco, MD 41 mi36 min NNW 9.7 G 12 69°F 1019.8 hPa
FSNM2 43 mi38 min WNW 8 G 11 67°F 1019 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 43 mi38 min WNW 7 G 8 68°F 1019 hPa
BLTM2 - 8574680 - Baltimore, MD 44 mi38 min N 6 G 8 67°F 78°F1018.9 hPa
PHBP1 - 8545240 - Philadelphia, PA 45 mi38 min 66°F 77°F1017.7 hPa
CPVM2 49 mi38 min 68°F 55°F

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE15 mi65 minWNW 310.00 miFair63°F48°F60%1018.8 hPa
Phillips Army Air Field / Aberdeen, MD18 mi2 hrsN 010.00 miFair59°F48°F69%1019.2 hPa

Wind History from ILG (wind in knots)
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Last 24hr------------CalmCalmCalmW5W7W11
G17
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W12W8W7NW11NW5NW10NW9NW6W3
1 day agoNW6NW4--------------------W5SW7W7W6SW8SW4SW3S4S3S3S5NW8
2 days agoNW6NW6W3NW3CalmCalmCalmSE3SE5SW76W85--NW86W14W7W7W5W8NW8NW8W6

Tide / Current Tables for Old Frenchtown Wharf, Maryland
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Old Frenchtown Wharf
Click for Map
Wed -- 01:35 AM EDT     3.00 feet High Tide
Wed -- 05:38 AM EDT     Sunrise
Wed -- 07:31 AM EDT     0.88 feet Low Tide
Wed -- 10:44 AM EDT     Moonrise
Wed -- 01:53 PM EDT     3.83 feet High Tide
Wed -- 08:34 PM EDT     Sunset
Wed -- 08:51 PM EDT     0.72 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.932.72.21.61.20.90.91.21.82.53.23.73.83.63.12.51.81.30.80.70.91.5

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Wed -- 01:20 AM EDT     -0.09 knots Slack
Wed -- 04:47 AM EDT     -2.17 knots Max Ebb
Wed -- 05:38 AM EDT     Sunrise
Wed -- 08:30 AM EDT     0.01 knots Slack
Wed -- 10:44 AM EDT     Moonrise
Wed -- 11:30 AM EDT     2.32 knots Max Flood
Wed -- 03:01 PM EDT     -0.01 knots Slack
Wed -- 05:37 PM EDT     -1.79 knots Max Ebb
Wed -- 08:34 PM EDT     Sunset
Wed -- 09:19 PM EDT     0.06 knots Slack
Wed -- 11:48 PM EDT     1.87 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.8-1.1-1.7-2.1-2.2-2-1.6-111.82.32.31.91.40.2-1.3-1.7-1.8-1.6-1.3-0.71.11.7

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

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Philadelphia/Mount Holly, PA (2,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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.