Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Grasonville, 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 7:15AMSunset 6:23PM Tuesday October 17, 2017 8:15 PM EDT (00:15 UTC) Moonrise 3:54AMMoonset 4:38PM Illumination 6% Phase: Waning Crescent; Moon at 27 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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ANZ540 Eastern Bay- 731 Pm Edt Tue Oct 17 2017
Tonight..W winds around 5 kt. Waves 1 ft or less.
Wed..SW winds 5 kt. Waves less than 1 ft.
Wed night..SW winds 5 kt. Waves less than 1 ft.
Thu..SW winds 5 kt. Waves less than 1 ft.
Thu night..W winds 5 to 10 kt. Waves 1 ft.
Fri..NW winds 5 to 10 kt. Waves 1 ft.
Fri night..N winds 5 kt. Waves less than 1 ft.
Sat..S winds around 5 kt. Waves 1 ft or less.
Sun..S winds 5 to 10 kt. Waves 1 ft.
ANZ500 731 Pm Edt Tue Oct 17 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will remain in place through the rest of the week and into the weekend. A weak system will pass by to the north Thursday night. Small craft advisories may be needed Thursday night into Friday morning.

7 Day Forecast for Marine Location Near Grasonville, MD
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location: 38.88, -76.25     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 171925
afdphi
area forecast discussion
national weather service mount holly nj
325 pm edt Tue oct 17 2017

Synopsis
High pressure centered over the mid-atlantic region will dominate
the weather pattern through the upcoming weekend. The only
interruption will be a weak frontal boundary approaching from the
north Wednesday night into early Thursday. As the high moves off the
coast this weekend, a strong southerly flow will bring much warmer-
than-normal temperatures to the region through Monday. A series of
cold fronts will usher in rain... And colder temperatures... During
the first half of next week.

Near term until 6 am Wednesday morning
High pressure with clear skies will continue over the area tonight.

Another cold night is expected, but the coldest temperatures will be
over the pine barrens of nj with slightly warmer readings over the
wrn areas. Consequently, the frost advisory for tonight will be
across the pine barrens. We have also added ocean county, with the
wrn more rural areas expecting frost and none near the shore. Lows
tonight in the low mid 30s over rural nj and upper 30s to low 40s
elsewhere.

Short term 6 am Wednesday morning through 6 pm Wednesday
High pressure continues across the region. Another sunny day is
expected area-wide. Temperatures will moderate back to a couple
degrees above normal levels with highs in the upper 60s to low 70s.

Winds will be light mostly from the sw.

Long term Wednesday night through Tuesday
The mid-level pattern associated with the long term period begins
with a low-amplitude ridge across the eastern section of the country
Wednesday night. A weak trough moves through early Thursday before
another mid-level ridge sets up shop over the east coast by Friday,
with the amplitude of this ridge increasing through the weekend. A
deep mid-level trough then approaches from the west late Tuesday,
signifying major changes next week.

At the surface, high pressure centered over the central applachians
Wednesday morning will drift south Wednesday night and Thursday as a
weak boundary slides in from the north. No precipitation is expected
with this boundary, so its only noticeable effect may be a
slight shift in wind direction and a slight drop in relative
humidity. Then as the surface high begins to push back north,
the nice weather will continue. With the amplitude of mid-level
ridging increasing into early next week, and a southerly flow at
the surface, temperatures will continue to rise too, maxing out
10 to 15 degrees above normal on Saturday, Sunday, and Monday.

A cold front will begin to cool temperatures down Monday night,
with a stronger cold front on Tuesday bringing with it the
coldest temperatures of the autumn season so far by the middle
of next week.

Aviation 19z Tuesday through Sunday
Vfr conditions are expected at the terminals through Wednesday.

Light W to NW winds this afternoon will diminish overnight. Light
southwest winds are expected Wednesday morning.

Outlook...

Wednesday night through Sunday...VFR.

Marine
The remaining SCA flag for the southern nj and delaware waters will
be taken down at 3:30 p.M. Light winds and fair weather tonight and
Wednesday.

Outlook...

Wednesday night through Sunday... No marine headlines expected.

Phi watches warnings advisories
Pa... None.

Nj... Frost advisory from 1 am to 9 am edt Wednesday for njz020>022-
027.

De... None.

Md... None.

Marine... None.

Synopsis... Miketta
near term... O'hara
short term... O'hara
long term... Miketta
aviation... Miketta o'hara
marine... Miketta o'hara


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 10 mi76 min S 2.9 G 4.1 58°F 68°F
CPVM2 11 mi46 min 59°F 40°F
44063 - Annapolis 12 mi36 min S 5.8 G 7.8 58°F 1025.3 hPa
APAM2 - 8575512 - Annapolis, MD 14 mi46 min 56°F 1025.7 hPa
44043 - Patapsco, MD 20 mi36 min SSW 9.7 G 12 58°F 1026.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 23 mi46 min SE 2.9 G 5.1 52°F 66°F1026.2 hPa
CA2 - 8571892 - Cambridge, MD 23 mi46 min 52°F 67°F1027.4 hPa
44062 - Gooses Reef, MD 24 mi36 min S 1.9 G 3.9 58°F 1024.4 hPa
BSLM2 - Chesapeake Bay, MD 25 mi106 min SE 2.9 57°F 1026 hPa45°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 28 mi46 min S 11 G 13 57°F 1025.7 hPa
BLTM2 - 8574680 - Baltimore, MD 32 mi46 min SW 6 G 8.9 56°F 71°F1025.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 34 mi46 min Calm G 1.9 57°F 1027.3 hPa
SLIM2 - 8577330 - Solomons Island, MD 40 mi46 min N 1.9 G 2.9 57°F 70°F1026.4 hPa
WASD2 - 8594900 - Washington, DC 41 mi46 min SSE 2.9 G 5.1 60°F 69°F1026.3 hPa
DRSD1 - Delaware Reserve, DE 45 mi106 min Calm 51°F 1026 hPa42°F
BISM2 - 8571421 - Bishops Head, MD 47 mi46 min N 1.9 G 2.9 56°F 62°F1026.9 hPa
44057 - Susquehanna, MD 47 mi36 min W 5.8 G 7.8 57°F 1025.9 hPa

Wind History for Cambridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay Bridge Field, MD8 mi36 minSE 310.00 miFair48°F41°F76%1026.4 hPa
Easton / Newman Field, MD11 mi26 minN 010.00 miClear48°F41°F76%1027.8 hPa
Annapolis, United States Naval Academy, MD14 mi22 minN 010.00 miFair53°F45°F74%1026.4 hPa

Wind History from W29 (wind in knots)
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Last 24hrNW12
G18
NW8N10N12
G18
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G22
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NE5NE4NE7NE4NE5NE9NE6N8NE7N5N8N7N6N3CalmS3S3Calm
1 day agoS7S9S9SW9SW6W6W8NW8
G14
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NW8N4NW5NW8NW12N12
G19
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G23
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2 days agoCalmS3CalmCalmCalmCalmW3CalmS3SW3SW3S5SW5SW7SW6SW9
G16
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G16
S10S9S9SW10S8S8S7

Tide / Current Tables for Claiborne, Eastern Bay, Maryland
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Claiborne
Click for Map
Tue -- 02:47 AM EDT     1.64 feet High Tide
Tue -- 04:54 AM EDT     Moonrise
Tue -- 07:16 AM EDT     Sunrise
Tue -- 09:36 AM EDT     0.33 feet Low Tide
Tue -- 03:15 PM EDT     1.58 feet High Tide
Tue -- 05:38 PM EDT     Moonset
Tue -- 06:23 PM EDT     Sunset
Tue -- 09:52 PM EDT     0.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.41.61.61.51.31.10.80.50.40.30.50.81.21.41.61.51.41.10.90.60.40.40.5

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 12:49 AM EDT     0.00 knots Slack
Tue -- 03:51 AM EDT     0.80 knots Max Flood
Tue -- 04:54 AM EDT     Moonrise
Tue -- 06:51 AM EDT     -0.00 knots Slack
Tue -- 07:17 AM EDT     Sunrise
Tue -- 10:00 AM EDT     -0.89 knots Max Ebb
Tue -- 01:03 PM EDT     0.00 knots Slack
Tue -- 04:18 PM EDT     0.98 knots Max Flood
Tue -- 05:38 PM EDT     Moonset
Tue -- 06:23 PM EDT     Sunset
Tue -- 07:32 PM EDT     -0.00 knots Slack
Tue -- 10:38 PM EDT     -0.92 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.30.10.50.70.80.70.4-0.1-0.5-0.8-0.9-0.8-0.5-00.40.810.90.70.3-0.2-0.6-0.9-0.9

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 (20,4,5,8)
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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.