Saturday, January25, 2020
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Marine Weather and Tides
West Homestead, PA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:33AMSunset 5:30PM Saturday January 25, 2020 3:07 AM EST (08:07 UTC) Moonrise 8:18AMMoonset 6:17PM Illumination 0% Phase: New Moon; Moon at 0 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 West Homestead , PA
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location: 40.4, -79.91     debug


Area Discussion for - Pittsburgh, PA
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FXUS61 KPBZ 250554 AFDPBZ

Area Forecast Discussion National Weather Service Pittsburgh PA 1254 AM EST Sat Jan 25 2020

SYNOPSIS. Rain will change to snow showers late Saturday. Snow showers are then expected through the remainder of the weekend.

NEAR TERM /THROUGH TODAY/. Evening update . have cancelled the wind advisory. Lowering saturation levels is hampering the ability for the very strong wind aloft to maneuver down through the saturated column. Wind gusts have remained below advisory criteria. Gusts around 40mph are still possible this evening. PoPs have been updated in line with the latest radar imagery and hires model guidance. A plume of moisture, on the eastern flank of the northeastward moving upper low, will keep in widespread rain showers through the evening hours. Decreasing upper level support and a surface low drifting away from the region, will allow for rain intensity to decrease later this evening. Removed the mention of snow flakes overnight. Model thicknesses remain to warm to support the development of snow. Temperatures have been modified with a blend of hires model guidance.

Previous discussion . As for precipitation type, persistent warm advection and overall surface temperature above freezing will support widespread rain through the remainder of the period.

Cooler, drier air will filter in behind the frontal boundary Saturday morning. The temperature will remain steady (upper 30s) for much of the day with a few light showers possible.

SHORT TERM /TONIGHT THROUGH MONDAY/. Another shortwave axis rotating around the vertically-stacked low pressure system will cross the region Saturday evening. This appears to be the best period for snow efficiency given steep low-level lapse rates and a decent moisture profile through the dendritic growth zone. However, warm surface temperature should hamper ground accumulation to less than an inch in most locations.

Sunday will be quite similar to Saturday w/ temps steady in the 30s. A few snow/rain showers will be possible through the day. Analysis of forecast soundings suggests that moisture in the snow-growth zone will be quite limited on Sunday. It's possible seeder-feeder mechanism may alleviate this such that light snow falls rather than freezing drizzle. In any case, QPF looks minimal and any accumulation should be non-significant.

Yet another shortwave axis will cross over the region Sunday night, resulting in more light snow showers. Little to no accumulation anticipated.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/. Each day next week will be remarkably similar to one another. A nearly continuous overcast sky will keep the diurnal range to a minimum. Highs will generally be in the upper 30s, lows 25-30, and no significant precipitation.

AVIATION /06Z SATURDAY THROUGH WEDNESDAY/. A variety of flight conditions are in place at the start of the TAF period, but expect that most will drop into IFR as the low levels remain saturated. Steady rain will continue to pull east through the night, but stratus/fog will continue to provide restrictions.

Low clouds will remain in place through the daylight hours. Improvement to MVFR conditions is expected around the midday hours, with a few scattered showers remaining. The next shortwave will arrive after 00Z Sunday, bringing continued shower chances and a return of IFR ceilings.

Wind will remain light for the most part overnight, before taking on more of a southwesterly direction later Saturday morning, with gusts to 15 to 20 knots possible.

Outlook. Widespread restrictions are expected through Sunday with crossing low pressure.

PBZ WATCHES/WARNINGS/ADVISORIES. MD . None. OH . None. PA . None. WV . None.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pittsburgh - Allegheny County Airport, PA4 mi75 minN 01.75 miLight Rain Fog/Mist43°F42°F97%1011.6 hPa
Pittsburgh, Pittsburgh International Airport, PA18 mi77 minE 810.00 miOvercast42°F39°F92%1011.4 hPa

Link to 5 minute data for KAGC

Wind History from AGC (wind in knots)
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Last 24hrE5SE4E6SE4SE5SE4E5SE7E6E9SE13
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1 day agoNE4NE3CalmCalmCalmCalmSE3SE5SE3S4SE5S3SE4CalmE4E4E4E5NE3NE5S4SE4E3E4
2 days agoS6S3S6S5S6S7S6S6SW4CalmS33CalmSE4CalmE3SE3SE4SE5SE5CalmCalmCalmNE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of Mid-Atlantic    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 (3,6,7,8)
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Ground Weather Radar Station Pittsburgh, PA
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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 numerous 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.