Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Chester Hill, 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 7:25AMSunset 6:26PM Wednesday October 18, 2017 12:53 PM EDT (16:53 UTC) Moonrise 5:04AMMoonset 5:17PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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7 Day Forecast for Marine Location Near Chester Hill , PA
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location: 40.89, -78.23     debug


Area Discussion for - State College, PA
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Fxus61 kctp 181537
afdctp
area forecast discussion
national weather service state college pa
1137 am edt Wed oct 18 2017

Synopsis
Above average warmth and dry weather will continue through the
weekend, adding to one of the warmest starts to october on
record. The dry spell will end early next week, followed by a
cooler weather pattern leading up to halloween.

Near term through tonight
Big bubble no trouble. Sunny day a good 5f warmer than yesterday
with lighter winds.

Another clear comfortable autumn night.

Short term Thursday through Friday night
A bit warmer still on Thursday. A wave weakens the high a bit
and the gradient is a bit stronger so could be a bit more windy.

But the high builds back in as the wave, well up in canada
passes by. It does drag some slightly cooler air in Thursday
afternoon into early Friday.

But warm air with above normal 850 hpa temperatures is poised to
move in behind the rebuilding high Friday for a warm late-day
Friday and probably a warmer still Saturday.

Enjoy the fine weather is the key here.

Long term Saturday through Tuesday
A strong upper level ridge of high pressure will support above
average temperatures through the weekend. This will further add
to the anomalous october warmth which should help to secure a
spot in the top-10 warmest octobers - if not top 5 or even #1.

Both GFS and ECMWF ensemble systems continue to indicate a
pattern flip by the middle of next week with a period of colder
(near below normal) temperatures starting around october 25th.

The depth and longevity of the emerging upper trough and
subsequent cooler pattern remains in question - so we will have
to wait and see how much of a dent it can put in the strongly
positive month-to-date departures from climatology.

On the precipitation side, the prolonged dry spell ends early
next week as a cold front moves across the appalachians. Stream
separation differences closed low development in some of the
deterministic models leads to increasing spread and thus
uncertainty in the forecast details such as timing. The gom will
be open for moisture inflow northward ahead of the front. So
will keep continuity and favor MAX pops in the Monday night-
early Tuesday timeframe.

Aviation 16z Wednesday through Sunday
High pressure will dominate our weather through most of this
period. Mostly sunny and minimal clouds during the day. Mostly
clear nights with some patchy fog in low-lying valleys and near
river and other water bodies.

Winds will be light most of the period. A weak front could
increase winds a bit Thursday afternoon and evening.

Big bubble no trouble should be the general rule through Sunday.

Outlook...

wed-thu... No sig wx expected.

Fri-sun... MainlyVFR, with just some patchy am valley fog.

Climate
Month-to-date, october 2017 is the warmest october on record at
harrisburg and williamsport.

Ctp watches warnings advisories
None.

Synopsis... Steinbugl
near term... Grumm
short term... Grumm
long term... Steinbugl
aviation... Grumm
climate...



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Clearfield, Clearfield-Lawrence Airport, PA15 mi59 minVar 510.00 miFair61°F42°F50%1028.6 hPa
State College - University Park Airport, PA21 mi60 minWSW 310.00 miClear63°F42°F49%1028.1 hPa

Wind History from FIG (wind in knots)
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Last 24hrS8W7SW9SW9W9SW7SW4SW4SW3SW3SW3SW3SW3SW3CalmCalmCalmCalmCalmSW5SW3SW4S55
1 day agoN9NW8W17
G23
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NW8NW8NW5NW4CalmCalmCalm--------------------S7
2 days agoSW12
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W8W7W8W9
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NW11--NW7NW10NW5NW6NW8NW10NW16
G23

Tide / Current Tables for
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Tide / Current Tables for
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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 (12,3,4,5)
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Ground Weather Radar Station State College, 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.