Tuesday, August22, 2017 L-36.com


Marine Weather and Tides
Lancaster, PA

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 6:23AMSunset 7:52PM Tuesday August 22, 2017 8:49 PM EDT (00:49 UTC) Moonrise 6:12AMMoonset 7:36PM Illumination 1% Phase: New Moon; Moon at 1 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- 732 Pm Edt Tue Aug 22 2017
.small craft advisory in effect until 2 am edt Wednesday...
Tonight..SW winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms.
Wed..NW winds 5 to 10 kt. Waves 1 ft.
Wed night..N winds 5 kt. Waves less than 1 ft.
Thu..N winds 5 kt. Waves less than 1 ft.
Thu night..N winds 5 to 10 kt. Waves flat.
Fri..N winds 5 to 10 kt. Waves 1 ft.
Fri night..N winds 5 kt. Waves less than 1 ft.
Sat..NE winds around 5 kt. Waves 1 ft or less.
Sun..NE winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 732 Pm Edt Tue Aug 22 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will cross the waters late tonight into early Wednesday. High pressure will return for the second half of the week.

7 Day Forecast for Marine Location Near Lancaster, PA
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location: 40.04, -76.3     debug


Area Discussion for - State College, PA
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Fxus61 kctp 222351
afdctp
area forecast discussion
national weather service state college pa
751 pm edt Tue aug 22 2017

Synopsis
A strong cold front will move through the region overnight.

Much cooler and drier conditions will return for the second half
of the week into the weekend. Temperatures will average a few
degrees below normal highs starting tomorrow and lasting into
early next week.

Near term until 8 am Wednesday morning
The convection is moving into what's left of the best
instability over my sern zones. Rap indicates helicity is very
impressive and we have seen individual cells display rotation as
they race ene. The best chance for a severe storm remains over
these eastern areas with the best shear and instability.

The actual cold front is still just entering central ohio so
there will be a chance of a shower or thunderstorm until the
boundary ultimately passes later this evening.

Pops will taper off rapidly after midnight as drier air moves in
behind the front.

Behind the line pops drop fast and drier air comes. Some areas
of fog possible. But a cooler and drier am Wednesday.

Short term 8 am Wednesday morning through 6 pm Wednesday
Wednesday will be noticeably drier as the pw values crash to -1
sigma below normal after being well +1 to +2 sigma above
normal. It will also be significantly cooler. The 850 hpa
temperatures fall to near normal Wednesday and will fall below
normal overnight Wednesday into Thursday.

Chance of rain should be very low Wednesday.

The cool air aloft will likely produce some cumulus in the
mountains during the afternoon hours.

It should be a nice and notably cooler day.

Long term Wednesday night through Tuesday
An extended period of early autumn-like weather will begin
Wednesday and continue right through the upcoming weekend as a
-2 sigma upper trough (and similarly anomalous cool 850 mb
temps) move over the great lakes and NE u.S.

1026-1028 mb sfc high (+2-3 sigma) over south-central canada
will drift slowly to the great lakes by this weekend
daytime high temps will be about 5-7 deg f below normal across
the western mtns on Wednesday, though still just slightly below
normal across the SE zones prior to the arrival of the
deeper colder air for the latter part of the week.

Gefs mean 850 mb temps will dip about 2-3 deg c in all locations
for Thursday-Sunday, leading to MAX temps averaging 5-10 f
below normal (with min temp departures about 10-13f below
normal Friday-Sunday) as a large canadian high pressure area
pushes SE across the glakes region and becomes centered over the
ne states.

Lows Fri Sat Sun mornings with high centered overhead will be
dipping into the l-m 40s over the northern mountains (and deeper
valleys of the central mountains) and solidly into the 50s
elsewhere. Some of the perennial cold spots near and to the east
of kbfd could see readings of 38 or 39f.

Aviation 00z Wednesday through Sunday
Most of the eastern areas mostly sunny with some cumulus clouds
about making for a bumpy ride in the boundary layer. Over
western pa and oh there is a line of strong and severe storms.

Strong winds and large hail are possible. Check radar before
flying over western pa this afternoon and central areas this
evening.

The line of storms will move east this afternoon and evening.

Areas of patchy fog will develop around after midnight. Spotty
MVFR and ifr.

Conditions will improve rapidly Wednesday morning, as cool
canadian high pressure builds into the area.

Outlook
Wed... Am low CIGS bfd jst, otherwiseVFR.

Thu-sat... No sig wx expected.

Equipment
Kccx is fixed with new motor installed.

Ctp watches warnings advisories
None.

Synopsis... Dangelo la corte
near term... Grumm la corte
short term... Grumm
long term... La corte lambert
aviation... Grumm lambert
equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44057 - Susquehanna, MD 37 mi39 min SSW 14 G 16 85°F 1009.6 hPa
CHCM2 - 8573927 - Chesapeake City, MD 44 mi49 min SSE 4.1 G 7 83°F 84°F1010.2 hPa (-0.7)
DELD1 - 8551762 - Delaware City, DE 49 mi49 min S 5.1 G 9.9 84°F 79°F1009.9 hPa (-0.8)
MRCP1 - 8540433 - Marcus Hook, PA 50 mi49 min 84°F 1009.2 hPa (-0.9)

Wind History for Chesapeake City, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA6 mi56 minS 710.00 miFair85°F73°F68%1008.4 hPa
Chester County Airport, PA23 mi74 minS 7 G 1310.00 miFair82°F73°F74%1010.8 hPa

Wind History from LNS (wind in knots)
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Last 24hrNE9E11E5S4CalmCalmCalmE3CalmCalmCalmCalmS3S4Calm3SW8SW11SW11S15
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1 day agoCalmW3CalmCalmCalmCalmCalmSE3E3CalmCalmE3E4NE35S8SW7SW6S8S7SE9NW11S103
2 days agoW9W5NW3CalmW6W6W6W6W6W5W4W4W6N9NW56NW9W7W4W6W6N6W4W4

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
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Port Deposit
Click for Map
Tue -- 06:21 AM EDT     0.66 feet Low Tide
Tue -- 06:23 AM EDT     Sunrise
Tue -- 07:12 AM EDT     Moonrise
Tue -- 11:45 AM EDT     3.78 feet High Tide
Tue -- 07:35 PM EDT     0.83 feet Low Tide
Tue -- 07:50 PM EDT     Sunset
Tue -- 08:34 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.82.52.11.61.20.90.70.71.32.133.63.83.63.22.72.11.61.10.90.91.32.12.8

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
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Havre de Grace
Click for Map
Tue -- 04:54 AM EDT     0.19 feet Low Tide
Tue -- 06:23 AM EDT     Sunrise
Tue -- 07:12 AM EDT     Moonrise
Tue -- 10:39 AM EDT     2.66 feet High Tide
Tue -- 05:47 PM EDT     0.15 feet Low Tide
Tue -- 07:50 PM EDT     Sunset
Tue -- 08:34 PM EDT     Moonset
Tue -- 11:16 PM EDT     2.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.61.10.70.30.20.40.91.62.22.62.62.42.11.61.10.60.30.20.40.91.522.3

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 State College, PA (20,4,5,8)
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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.