Monday, August21, 2017 L-36.com


Marine Weather and Tides
West Homestead, 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 6:35AMSunset 8:08PM Monday August 21, 2017 11:33 PM EDT (03:33 UTC) Moonrise 5:19AMMoonset 7:14PM Illumination 0% Phase: New Moon; Moon at 29 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 220101
afdpbz
area forecast discussion
national weather service pittsburgh pa
901 pm edt Mon aug 21 2017

Synopsis
Quiescent conditions will continue through Tuesday morning.

Widespread showers and thunderstorms are expected on Tuesday as
a cold front crosses the region.

Near term until 6 am Tuesday morning
A rather pervasive cirrus shield has advanced eastward over
much of the CWA through the evening hours. Further, the earlier
diffuse dewpoint gradient has really become a non-factor. Thus,
with nighttime stabilization occurring, a lack of a
focusing lifting mechanism, and convective blow off
overspreading the area, further convection development is
unlikely. Pops have been limited to the north of i-80 realm for
the next few hours before the bulk of the overnight hours become
dry.

As convective blow off seems poised to remain over the area for
much of the night, lows will have difficulty dropping all that
far from the current readings. Thus, an above normal night looks
to be in store with soupy conditions. Fries

Short term 6 am Tuesday morning through Wednesday night
A strong upper low will dig into the great lakes on Tue and
acquire a neutral to negative tilt through the day in concert
with the movement of a mid-level jet maximum. The system's
associated cold front will approach the ohio valley during the
early evening, but a prefrontal trough is expected to be the
focus for daytime convection in the area.

Abundant low-level moisture, steepening lapse rates and strong
effective bulk shear will support the development of strong to
severe thunderstorms by early afternoon along the sharpening sfc
trough. CAPE on the order of 2000 j kg and effective shear of
40-50kt will promote organized, severe convection.

Given the deep-layer shear orientation roughly parallel to the
sfc feature, storms should congeal quickly into an intense
convective line that will move sewd into the instability axis.

Damaging wind gusts will be the primary threat, but hail also is
possible in more intense, cellular updrafts ahead of the line.

Storms will exit sewd by early evening with rain lingering into
the evening behind the storms as the cold front traverses the
region. High pressure will build in on Wed wed eve, with little
chance of rain as dry air invades.

Long term Thursday through Monday
Although ensembles still show spread in their upper pattern
solutions, it appears that broad surface high pressure under an
ern-conus trough midwestern ridge pattern is progged to support
a generally-dry air mass through the period. Daily temperatures
below climatological average can be expected through early next
week.

Aviation 01z Tuesday through Saturday
A few scattered showers and thunderstorms will continue through
01z or so near north of i-80, and have included vcts at fkl duj
as a result. After these dissipate with the loss of daytime
heating, mainly high clouds are expected overnight. Fog does not
appear to be much of a threat given the warm overnight
temperatures which will not allow crossover values to be
reached.

As a cold front approaches on Tuesday, showers and thunderstorms
will become more numerous from late morning on. Hinted at flight
condition deterioration with vcts and a drop to MVFR
visibilities at several terminals during the afternoon. Ifr
conditions are certainly possible, as are strong wind gusts, but
timing will need to be refined. Expect prevailing winds outside
of convection to increase to gust to between 15 and 25 knots
out of the southwest during the afternoon.

Outlook
With passage of an early Wed cold front, generalVFR can be
expected for the remainder of the week.

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 mi41 minSSW 610.00 miFair76°F69°F79%1019.7 hPa
Pittsburgh, Pittsburgh International Airport, PA18 mi43 minS 410.00 miPartly Cloudy76°F72°F88%1019.6 hPa

Wind History from AGC (wind in knots)
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Last 24hrSE5S4SE4SE4SE3SE5S7S7S7S7W7
G17
S7S6S10SW9S5SW8S9SW11S6SW5S5S5S6
1 day agoS5CalmSE3S5CalmCalmCalmCalmCalmCalmSE3CalmCalmCalm--CalmCalmSE4S6S4S3SE4SE3SE3
2 days agoW6W5W7W6W6SW6SW6SW6SW5SW6SW9W9S7W8SW12
G17
SW12SW12
G22
NW15
G27
NW5SE6S3S5SE4S5

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Pittsburgh, PA (23,6,7,8)
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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.