Saturday, February17, 2018 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 7:00AMSunset 5:50PM Saturday February 17, 2018 9:56 PM EST (02:56 UTC) Moonrise 8:09AMMoonset 7:45PM Illumination 8% 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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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 180007
afdctp
area forecast discussion
national weather service state college pa
707 pm est Sat feb 17 2018

Synopsis
Low pressure will move off the coast by midnight. An anomalous
upper level ridge will build off the east coast next week, with
a dying cold front pushing into the state on Wednesday.

Abnormally mild conditions will prevail for much of next week.

Temperatures will be more typical of early spring than mid
winter.

Near term until 7 am Sunday morning
Highly energetic system produced one major band of 1-3" per hour
rates which stuck in place from bedford to newport to nrn
dauphin county for about 2 hours. Many reports of 4-5" across
that area, and a second band - parallel and NW of the original
band - is forming. But, the new guy is no where near as intense
as the first guy, and it is also moving as the low moves away.

Course corrections (as the navy man in the room said) have been
made to up totals very slightly and corresponding changes to
headlines - mainly to add a stripe of warning where the first
band laid down near- warning numbers with an additional inch or
more on the way. But, most meso models do drop the intensity
off, and seem to reflect the current drying moving in from dc
and NRN va wv WRN md. Thus, the storm is almost over. Another
2-3 hours and all but the laurels will be down to mainly
flurries or nil. Nudged somerset into a warning as totals there
should reach 6+" - ESP the ski areas and west-facing slopes.

The one spot of interest which the models do not see coming is
the patch of hard snow over the pit metro area. Therefore, we
have a slight worry for that to yield more snow than currently
fcst in cambria and clearfield cos. But, we will wait for a
longer consistent trend.

Min temps will stay in the m-u20s with somewhat of a W NW wind
later tonight.

Short term 7 am Sunday morning through 6 pm Sunday
Freshly fallen snow and high pressure will make for a pretty
Sunday morning. Enjoy the snow cover while it lasts though
because afternoon temperatures will rise to the lower to middle
40s central and south, and even upper 30s north, promoting
plenty of melting. Early morning stratus over the
north... Otherwise mostly sunny skies expected throughout the
day.

Long term Sunday night through Saturday
Made minor changes to the fcst package.

Main thing for Sunday night was to lower temperatures... Given
new guidance and also that some snow will likely result in
temperatures falling off quickly after sunset.

Took out rain for early Monday morning... Except for the far
southwest. This area likely to be above freezing. Points
further east will see rain later on Monday morning... Given
time for temperatures to rise above freezing.

Qpf for Monday and Monday night will be much lighter than the
event we had Thursday evening, as the warm front lifts quickly
northward.

Overall an anomalous upper ridge builds along the east coast
next week. Heights rise to 588 across southern pa at 500 mb
Tuesday. Much of the area will be well into the 60s Tuesday and
Wednesday... But could warm well into the 70s if winds mix down.

Slightly cooler later in the week... As a cold front slips
southward into the area... As high pressure builds over eastern
canada and new england. Models keep the basic pattern the
same... So by next weekend... Mild conditions could return.

Aviation 00z Sunday through Thursday
Widespread ifr will continue at all TAF sites due to the heavy
snow bands across the region for at least the next 3 hours.

Conditions will improve for non elevated TAF sites west to
east between 03z to 06z. During this timeframe, ifr is expected
but could improve to MVFR as the night continues. Conditions
should improve across eastern areas shortly after midnight... As
the storm quickly moves out of the area. Some lower clouds and
light snow showers could linger across the central and western
areas to just after sunrise on Sunday.

Overall... Not a bad day for Sunday. Lots of Sun by late morning.

Winds will die down by late aft.

Some showers and lower clouds next week... Mainly for a brief
time Monday... And later on Wednesday... But much of the time will
be dry withVFR conditions. Also on the mild side.

Outlook...

mon... Restrictions return with some light rain.

Tue-wed... Restrictions likely in rain showers, mainly NW at
times... And late Wed elsewhere.

Thu... Clearing north. Still a chance of showers north.

Ctp watches warnings advisories
Winter storm warning until 1 am est Sunday for paz057>059.

Winter storm warning until 4 am est Sunday for paz033.

Winter weather advisory until 11 pm est this evening for
paz025-026-034-035.

Winter storm warning until 11 pm est this evening for paz036-
056-063.

Winter weather advisory until 1 am est Sunday for paz027-028-
050>053-064>066.

Winter weather advisory until 4 am est Sunday for paz024.

Synopsis... Dangelo
near term... Dangelo
short term... Devoir
long term... Martin
aviation... Ceru martin


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Clearfield, Clearfield-Lawrence Airport, PA15 mi62 minN 01.75 miLight Snow Fog/Mist29°F28°F96%1017.3 hPa
State College - University Park Airport, PA21 mi63 minN 00.50 miSnow28°F28°F100%1016.6 hPa

Wind History from FIG (wind in knots)
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Last 24hrNW11
G19
W5W4W5W4N4CalmCalmCalmN4CalmCalm534S7CalmSE8CalmS4CalmCalmN3Calm
1 day agoS5S5SW5SW4N7CalmSW3SW4S7SW5SW5SW3W8W8W9W15
G21
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G17
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2 days agoN3CalmCalmN5CalmNE4CalmNW3SE3S4SW8
G17
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G24
W12
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SW18
G27
W13
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W11
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SW10
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G18
SW6SW4S5

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 (21,6,7,8)
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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.