Friday, January19, 2018 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 7:18AMSunset 5:10PM Friday January 19, 2018 11:56 AM EST (16:56 UTC) Moonrise 8:52AMMoonset 7:43PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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- 930 Am Est Fri Jan 19 2018
Rest of today..SW winds 10 kt. Waves 1 ft.
Tonight..SW winds 5 kt. Waves less than 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft.
Sat night..W winds 5 kt. Waves flat.
Sun..W winds 5 kt. Waves flat.
Sun night..S winds 5 kt. Waves flat.
Mon..S winds 5 to 10 kt. Waves 1 ft or less. Showers through the night.
Tue..W winds 5 to 10 kt. Waves 1 to 2 ft. Showers likely through the day.
ANZ500 930 Am Est Fri Jan 19 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build from the gulf coast to the eastern seaboard through this weekend. The next cold front will approach the area Monday and cross the area early Tuesday. Small craft advisories may be necessary Tuesday.

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 191536
afdphi
area forecast discussion
national weather service mount holly nj
1036 am est Fri jan 19 2018

Synopsis
High pressure across the central gulf coast will build eastward
today, then offshore over the weekend. An area of low pressure
will move across eastern canada over the weekend as a back door
cold front approaches from the north. Another area of low
pressure will move through the great lakes Monday night into
Tuesday, pulling a cold front across the area. High pressure
will build toward the area late Wednesday into Thursday of next
week.

Near term until 6 pm this evening
No major changes with the morning update. Surface high pressure
builds in from the west, allowing for rising heights and
thicknesses. Highs will be some 8-10 degrees warmer today than
Thursday, topping off in the mid to upper 30s north and west of
the fall line, and in the low to mid 40s across southern nj and
southeast pa, and in the mid to upper 40s in the delmarva.

Short term 6 pm this evening through 6 am Saturday
High pressure continues to build in from the west and heights
continue to rise. This results in overnight lows warmer tonight
than this morning, but there will still be some radiational
cooling that allows temperatures to drop into the teens and
lower 20s. Otherwise, lows will be generally in the mid 20s.

Long term Saturday through Thursday
Quiet weather continues into the weekend, with a return of
unsettled weather for early next week, followed by quiet weather
again for the middle of next week.

Dry conditions will continue for Saturday and Saturday night as
high pressure builds to our south across the southeastern
states then offshore Saturday. We will remain on the northern
periphery of the high which will keep a dry, west to southwest
flow across the area. Winds on Saturday are expected to gust
20-25 mph at times during the afternoon.

On Sunday, a back door cold front will sag toward our area from
the north as an area of low pressure slides eastward across
eastern canada, and cold high pressure builds across eastern
canada through Sunday night. Sunday is expected to remain dry,
but cloud cover will be on the increase through the day.

As we move into Sunday night and Monday, the back door frontal
boundary is forecast to make its way across a portion of the
area. As it does so, there will be some enhanced moisture and
lift moving overtop of the front. This may lead to some light
rain drizzle developing across the area Sunday night into
Monday. Temperatures are expected to drop below freezing for
portions of northern new jersey and northeastern pennsylvania as
some cold air gets dammed up. If any precipitation does occur,
this could lead to some light freezing rain or drizzle overnight
Sunday into Monday morning.

Then Monday night into Tuesday morning, a cold front is
expected to sweep across the area as an area of low pressure
moves through the great lakes region. This will lead to a period
of rainfall overnight Monday into Tuesday. It is possible that
the rain could change over to snow across northern new jersey
and northeastern pennsylvania before the precipitation ends
Tuesday morning behind the cold frontal passage.

For Tuesday night into Wednesday, the low pressure system moves
across eastern canada, while a secondary cold front moves
toward the area from the west, which may cross the area during
the day. Most of the area will remain dry, as any precipitation
is forecast to remain to our north. If there is any
precipitation, it would most likely occur across portions of
northern new jersey and northeastern pennsylvania.

High pressure returns for Thursday, leading to dry conditions.

Aviation 16z Friday through Tuesday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Today...VFR. Skc few250. W-sw winds less than 10 kt. High
confidence.

Tonight...VFR. Skc few250. Light and variable winds. High
confidence.

Outlook...

Saturday through Saturday night...VFR. West to southwest winds;
winds may gust 15-20 knots at time. High confidence.

Sunday... Conditions may lower to MVFR later during the day.

West winds may gust 15-20 knots. Moderate confidence.

Sunday night-Monday... MVFR conditions overnight Sunday into
Monday. May become ifr, especially northern areas, with a chance
of showers. Moderate confidence.

Monday night-Tuesday..Conditions lower to ifr everywhere with
periods of rain associated with a frontal passage. Southeast
winds become westerly behind the front and begin gusting 25-30
knots. Moderate confidence.

Marine
Sub-sca conditions today and tonight. Southwest winds on the
ocean will generally range from 10-15 kt with gusts up to 20 kt.

On delaware bay, SW winds will be 10 kt or less with 1-2 ft
seas today and tonight.

Outlook...

Saturday... Small craft advisory in effect for the northern half
of the new jersey coastal waters as winds expected to gust
25-30 knots. The southern new jersey and delaware coastal waters
are only expected to gust around 20-25 knots, so we have not
issued an advisory there.

Saturday night... Winds are expected to drop below advisory
levels by Saturday evening, but periodically gust around 20
knots.

Sunday-Monday... Conditions expected to remain below advisory
levels, but winds may periodically gust around 20 knots.

Monday night... Conditions expected to return to small craft
advisory levels.

Tuesday... Small craft advisory level wind continue, but may
reach gale force.

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Small craft advisory from 6 am to 6 pm est Saturday for
anz450>452.

Synopsis... Robertson
near term... Johnson mps
short term... Mps
long term... Robertson
aviation... Robertson mps
marine... Robertson mps


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHCM2 - 8573927 - Chesapeake City, MD 4 mi57 min W 5.1 G 11 40°F 32°F1020.4 hPa (+0.0)
DELD1 - 8551762 - Delaware City, DE 14 mi57 min WSW 7 G 11 40°F 29°F1020 hPa (+0.3)
RDYD1 - 8551910 - Reedy Point, DE 15 mi57 min 40°F 32°F1019.7 hPa (+0.3)
MRCP1 - 8540433 - Marcus Hook, PA 28 mi57 min 39°F 34°F1019.5 hPa (+0.3)
SJSN4 - 8537121 - Ship John Shoal, NJ 31 mi57 min W 9.9 G 12 38°F 31°F1019.9 hPa (+0.0)
TCBM2 - 8573364 - Tolchester Beach, MD 32 mi57 min SSW 5.1 G 6 38°F 32°F1020.8 hPa (+0.3)
DRSD1 - Delaware Reserve, DE 40 mi147 min WSW 1.9 34°F 1020 hPa23°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 43 mi57 min WSW 11 G 13 41°F 1020.3 hPa (+0.0)
FSNM2 43 mi63 min W 11 G 16 41°F 1019.7 hPa
BLTM2 - 8574680 - Baltimore, MD 44 mi57 min NW 5.1 G 13 44°F 33°F1019.8 hPa (+0.0)
PHBP1 - 8545240 - Philadelphia, PA 45 mi57 min 39°F 32°F1019.3 hPa (+0.0)
CPVM2 49 mi57 min 44°F 14°F

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE15 mi66 minWSW 710.00 miFair41°F17°F38%1020.3 hPa
Phillips Army Air Field / Aberdeen, MD18 mi2 hrsSW 510.00 miMostly Cloudy37°F19°F48%1021 hPa

Wind History from ILG (wind in knots)
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Last 24hrNW11NW15NW15W17
G21
NW12NW7NW6NW5NW4CalmNW4CalmCalmCalmSW4W4CalmCalmCalmW3CalmSW4W9W7
1 day agoNW16NW15NW14NW15NW13NW15NW10NW12NW11
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2 days agoCalmS6S9S10S8S6SW3SE5CalmN3NW4NW5N3NW4N8NW8NW7NW9NW6NW15NW10NW10NW11NW15

Tide / Current Tables for Old Frenchtown Wharf, Maryland
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Old Frenchtown Wharf
Click for Map
Fri -- 05:44 AM EST     -0.16 feet Low Tide
Fri -- 07:20 AM EST     Sunrise
Fri -- 08:51 AM EST     Moonrise
Fri -- 10:57 AM EST     1.32 feet High Tide
Fri -- 04:46 PM EST     -0.62 feet Low Tide
Fri -- 05:08 PM EST     Sunset
Fri -- 07:43 PM EST     Moonset
Fri -- 11:30 PM EST     2.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.21.81.20.70.2-0.1-0.200.40.91.21.31.20.80.3-0.2-0.5-0.6-0.400.71.422.3

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Fri -- 02:05 AM EST     -1.55 knots Max Ebb
Fri -- 04:41 AM EST     0.06 knots Slack
Fri -- 07:20 AM EST     Sunrise
Fri -- 08:23 AM EST     1.84 knots Max Flood
Fri -- 08:51 AM EST     Moonrise
Fri -- 10:37 AM EST     -0.09 knots Slack
Fri -- 02:10 PM EST     -2.17 knots Max Ebb
Fri -- 05:08 PM EST     Sunset
Fri -- 05:40 PM EST     0.08 knots Slack
Fri -- 07:43 PM EST     Moonset
Fri -- 09:04 PM EST     2.13 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-1.3-1.5-1.4-0.90.61.11.51.81.81.2-0.9-1.6-2-2.2-2.1-1.7-10.71.41.92.121.4

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 (11,2,3,4)
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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.