Sunday, December15, 2019
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Marine Weather and Tides
Bethel Park, PA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:34AMSunset 4:56PM Sunday December 15, 2019 6:03 PM EST (23:03 UTC) Moonrise 8:35PMMoonset 10:39AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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 Bethel Park , PA
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location: 40.34, -80.02     debug


Area Discussion for - Pittsburgh, PA
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FXUS61 KPBZ 152218 AFDPBZ

Area Forecast Discussion National Weather Service Pittsburgh PA 518 PM EST Sun Dec 15 2019

SYNOPSIS. A wintry mix of precipitation is expected tonight through Tuesday with crossing low pressure.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. A shortwave embedded in deepening open wave in the Great Plains will cross the region tonight and return snow chances. An average of an inch across Northern WV/Eastern Ohio is expected, in the higher terrain 2-3 inches may be observed due to lingering cooler air.

As the low-level winds shift from the SE in the eastern ridges of Garrett County, dynamic cooling will take place. With warm air aloft filtering into the region from SW flow, freezing rain will start to occur during the early morning hours. Thus, an upgrade to a Winter Storm Warning was made for Garrett County for the combination of ice and snow.

SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY NIGHT/. Snow will continue in our southern counties early Monday morning with the passing shortwave. A period of freezing rain from 7am to 10am , roughly along and south of I-70, may occur due to moist warm advection. Additional counties may need to be added to the Winter Weather Advisory late tonight if confidence for winter hazardous increases

With building mid-level subsidence south of the Great Lakes, precipitation will cease by the late morning north of Pittsburgh. However, additional shortwave support and moist advection should increase precip coverage later in the day Monday and Monday night. Much of the area should see rain through locations N of PIT could also see a wintry mix as temps aloft warm, but the sfc temps remain cold. Precip should become light and change to mainly snow Tuesday in cold advection behind the exiting sfc low.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. Snow shower chances continue Wednesday with cold NW flow and a crossing upper trough. Generally dry weather is then expected through the Friday under a building ridge ahead of a wrn CONUS trough. Slight chances for precip return Saturday as the trough approaches.

AVIATION /22Z SUNDAY THROUGH FRIDAY/. Approaching low pressure is poised to spread snow over the region as the night progresses. Expect deterioration to IFR in the predawn of Monday with snow transitioning to a wintry mix from the south as the early-morning progresses. A break in IFR and precip is expected by midday, but redeterioration is anticipated later in the day as the main trough axis encroaches.

Outlook. Restrictions are likely through Tuesday with crossing low pressure.

PBZ WATCHES/WARNINGS/ADVISORIES. MD . Winter Storm Warning from 9 PM this evening to 7 PM EST Monday for MDZ001. OH . Winter Weather Advisory from 9 PM this evening to 10 AM EST Monday for OHZ057>059-068-069. PA . Winter Weather Advisory from 9 PM this evening to 10 AM EST Monday for PAZ031-075-076. WV . Winter Weather Advisory from 9 PM this evening to 10 AM EST Monday for WVZ003-004-012-021-509>514.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pittsburgh - Allegheny County Airport, PA5 mi71 minW 8 G 168.00 miOvercast31°F19°F61%1021.6 hPa
Pittsburgh, Pittsburgh International Airport, PA16 mi73 minW 49.00 miOvercast31°F21°F67%1022.1 hPa

Link to 5 minute data for KAGC

Wind History from AGC (wind in knots)
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1 day agoE5E4CalmNE3NE3NE4CalmCalmN3N3CalmCalmN3NW5NW5NW7NW5
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2 days agoSE5SE7SE7SE6SE5SE5SE6SE7SE5SE7SE6SE6SE5SE6SE4SE5E4CalmCalmN3NE3CalmNE3SE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Pittsburgh, PA (18,4,5,8)
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Ground Weather Radar Station Pittsburgh, PA
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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.