Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Wilmington, DE

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 5:07PM Thursday January 18, 2018 8:38 AM EST (13:38 UTC) Moonrise 8:15AMMoonset 6:44PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 615 Am Est Thu Jan 18 2018
.small craft advisory in effect until 10 am est this morning...
Today..NW winds around 15 kt with gusts up to 25 kt, diminishing to 10 to 15 kt with gusts up to 20 kt late this morning. Waves around 3 ft. Light freezing spray likely this morning.
Tonight..W winds 5 to 10 kt. Waves 2 ft or less.
Fri..W winds 5 to 10 kt. Waves 2 ft or less.
Fri night..SW winds 5 to 10 kt. Waves 2 ft or less.
Sat..SW winds 5 to 10 kt. Waves 2 ft or less.
Sat night..W winds 5 to 10 kt. Waves 2 ft or less.
Sun..W winds 5 to 10 kt. Waves 2 ft or less.
Sun night..SW winds around 5 kt. Waves 2 ft or less.
Mon..S winds 5 to 10 kt. Waves 2 ft or less.
Mon night..S winds 10 to 15 kt. Waves 2 ft or less, then around 3 ft after midnight. Showers likely in the evening, then rain likely after midnight.
ANZ400 615 Am Est Thu Jan 18 2018
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. High pressure will build across the gulf coast through the end of the week, 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.

7 Day Forecast for Marine Location Near Wilmington, DE
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location: 39.73, -75.56     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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Fxus61 kphi 181119
afdphi
area forecast discussion
national weather service mount holly nj
619 am est Thu jan 18 2018

Synopsis
High pressure will build across the gulf coast through the end
of the week, 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.

Near term until 6 pm this evening
Adjusting hourly temps based on latest surface obs. Temps in
some spots in northwest nj bottomed out, but temps in other
areas have risen as winds increased to 5-10 mph. Temps should
steady off the next couple of hours, then rise after sunrise.

Otherwise, surface low pressure off the mid-atlantic coast
continues to lift out to sea today as surface high pressure over
the lower mississippi valley slowly builds east. Meanwhile,
closed h5 low over the carolina coast tracks east as upper
ridging builds into the appalachians.

For the local area, can expect a mostly sunny day as subsidence
associated with the upper level ridging builds east. Pressure
gradient tightens in the afternoon, and w-nw winds will increase
to around 15 mph with 20-25 mph gusts.

Airmass moderates over the area as 850 mb temps rise to 0 to
+4c, resulting in highs in the mid 20s in the poconos, and
otherwise mostly in the low to mid 30s. Highs in the southern
portion of the DELMARVA will be near 40.

Short term 6 pm this evening through 6 am Friday
High pressure continues to build east tonight. Pressure
gradient slackens, and winds become light and variable. A weak
upper disturbance passes well north of the area tonight, and
this may bring some mid and upper clouds to the poconos and nw
nj. Otherwise, skies will be mostly clear. As a result, can
expect strong radiational cooling conditions for the lehigh
valley, northern nj, and the pine barrens of southern nj. Lows
tonight will range from the teens to lower 20s.

Long term Friday through Wednesday
Quiet weather for the end of the week into the the weekend,
with a return of unsettled weather for early next week.

Dry conditions will continue for Friday into Saturday as high
pressure builds to our south across the gulf coast states
through Friday, then offshore Saturday. Our area will remain on
the northern periphery of the high which will keep a dry, west
to southwest flow across the area.

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. Sunday should remain dry, but 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
developing across the area Sunday night into Monday. It is
possible that temperatures could drop below freezing across
portions of northern new jersey and northeastern pennsylvania,
possibly leading to some light freezing rain.

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, but there my be
enough moisture across the northern areas as a short
wave vorticity impulse moves through for some snow showers to
get squeezed out across portions of northern new jersey and
northeastern pennsylvania.

Aviation 11z Thursday through Monday
The following discussion is for kphl, kpne, kttn, kabe, krdg,
kilg, kmiv, kacy and surrounding areas.

Today...VFR skc. NW winds 10-15 kt with gusts up to 20 kt,
except for kphl kacy, where gusts up to 25 kt are possible.

Tonight... Lgt vrb winds. Skc.

Outlook...

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

Sunday night-Monday... Conditions may lower to MVFR overnight
Sunday into Monday, possibly ifr for northern areas, with a
chance of showers. Gusty southeast winds 15-20 knots. Moderate
confidence.

Marine
Today... Gale warning remains in effect for the de ocean waters
and lower de bay for wind gusts around 35 kt and this will
continue through around 10 am. For the de ocean waters, a sca
will be needed after the gale warning ends. Otherwise, small
craft advisories will continue for upper de bay through this
morning, and for the ocean into this evening. Wind gusts on the
ocean may diminish a bit later this morning before picking up
again in the afternoon.

Tonight... SCA conditions end on the ocean this evening, and
gusts to 20 kt will continue. Seas will diminish to 2-4 feet. On
de bay, tranquil conditions.

Outlook...

Friday-Friday night... Conditions expected to be below advisory
levels, but winds may periodically gust around 20 knots.

Saturday-Saturday night... Winds may approach small craft
advisory levels across the northern half of the atlantic coastal
waters.

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

Phi watches warnings advisories
Pa... None.

Nj... None.

De... None.

Md... None.

Marine... Small craft advisory until 1 am est Friday for anz450>453.

Gale warning until 10 am est this morning for anz431-454-455.

Small craft advisory until 10 am est this morning for anz430.

Synopsis... Robertson
near term... 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
MRCP1 - 8540433 - Marcus Hook, PA 9 mi56 min 19°F 34°F1019.9 hPa
DELD1 - 8551762 - Delaware City, DE 10 mi50 min WNW 7 G 9.9 17°F 29°F1020.5 hPa
RDYD1 - 8551910 - Reedy Point, DE 12 mi50 min 18°F 32°F1020.2 hPa
CHCM2 - 8573927 - Chesapeake City, MD 19 mi56 min NW 7 G 8.9 19°F 32°F1021.2 hPa
PHBP1 - 8545240 - Philadelphia, PA 26 mi50 min 20°F 32°F1019.4 hPa
BDSP1 31 mi50 min 19°F 35°F1019.7 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 31 mi50 min NW 23 G 27 21°F 31°F1019.6 hPa
BDRN4 - 8539094 - Burlington, Delaware River, NJ 44 mi62 min WNW 5.1 G 8 17°F 32°F1018.9 hPa
DRSD1 - Delaware Reserve, DE 45 mi128 min WNW 4.1 18°F 1021 hPa9°F

Wind History for Delaware City, DE
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE4 mi47 minWNW 810.00 miFair16°F8°F71%1020.5 hPa
Philadelphia, Philadelphia International Airport, PA20 mi44 minW 710.00 miA Few Clouds19°F6°F57%1020.2 hPa
Chester County Airport, PA24 mi63 minNW 710.00 miFair14°F5°F67%1019.6 hPa

Wind History from ILG (wind in knots)
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Last 24hrNW10NW11NW15NW16NW15NW14NW15NW13NW15NW10NW12NW11
G18
NW11NW10NW6NW8NW9NW9NW12NW10NW13
G19
NW5W5NW8
1 day agoCalmCalmE4CalmS6S9S10S8S6SW3SE5CalmN3NW4NW5N3NW4N8NW8NW7NW9NW6NW15NW10
2 days agoNE12NE9NE10NE8NE11NE9NE8NE6NE4E6E4E6E4E5E4E4CalmNE6NE7E5E5N3N3E3

Tide / Current Tables for Millside, RR. bridge, Delaware
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Millside
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Thu -- 01:04 AM EST     4.67 feet High Tide
Thu -- 07:20 AM EST     Sunrise
Thu -- 07:41 AM EST     -0.21 feet Low Tide
Thu -- 08:14 AM EST     Moonrise
Thu -- 01:14 PM EST     5.34 feet High Tide
Thu -- 05:05 PM EST     Sunset
Thu -- 06:44 PM EST     Moonset
Thu -- 08:22 PM EST     -0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.24.74.43.42.31.20.5-0.1-0.20.72.33.84.85.35.14.33.22.11.20.4-0.10.11.22.7

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
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Chesapeake and Delaware Canal
Click for Map
Thu -- 01:25 AM EST     -1.52 knots Max Ebb
Thu -- 04:09 AM EST     0.05 knots Slack
Thu -- 07:20 AM EST     Sunrise
Thu -- 07:39 AM EST     1.87 knots Max Flood
Thu -- 08:15 AM EST     Moonrise
Thu -- 09:57 AM EST     -0.09 knots Slack
Thu -- 01:32 PM EST     -2.21 knots Max Ebb
Thu -- 05:07 PM EST     Sunset
Thu -- 05:14 PM EST     0.06 knots Slack
Thu -- 06:45 PM EST     Moonset
Thu -- 08:22 PM EST     2.16 knots Max Flood
Thu -- 11:34 PM EST     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.1-1.5-1.5-1.1-0.40.91.41.81.81.4-0.3-1.5-1.9-2.2-2.2-1.9-1.4-0.61.11.82.12.11.71

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 (8,2,3,4)
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Ground Weather Radar Station Philadelphia, PA
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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.