Monday, September25, 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 7:09AMSunset 7:11PM Monday September 25, 2017 11:56 PM EDT (03:56 UTC) Moonrise 11:21AMMoonset 9:39PM Illumination 30% Phase: Waxing Crescent; Moon at 5 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
    EDIT      (on/off)   Help
7 Day Forecast for Marine Location Near West Homestead , PA
   Hourly   EDIT   Help
location: 40.4, -79.91     debug


Area Discussion for - Pittsburgh, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kpbz 260027 aab
afdpbz
area forecast discussion... Updated
national weather service pittsburgh pa
827 pm edt Mon sep 25 2017

Synopsis
High pressure will bring dry and warm weather through mid-week
before the passage of a cold front heralds a return to
seasonably-cool conditions.

Near term through Tuesday
825pm... Only minor changes to the cloud cover. Rest of the
forecast is in excellent shape.

Upper ridging on the NRN side of hurricane maria will maintain
broad subsidence over the region, leading to dry mid levels and
only passing cirrus. Temp maxima in the upper 80s and dewpoints
in the 60s should slow the falloff of temps this evening until
late tonight, when localized fog may form again in the river
valleys as the boundary layer nears saturation.

Tuesday will see little change in the overall pattern, and
therefore little change in the forecast apart from a slight
cooling of h8 temperature. Hence, Tue maxima may end up slightly
below those observed today. Despite deep mixing, a mid-level
inversion will limit vertical development of clouds, suppressing
any precipitation during the day.

Short term Tuesday night through Thursday night
A shortwave trough will deliver a glancing blow to the western
great lakes region, driving a cold front sewd on Wed as maria
comes as near as it will get to the DELMARVA coastline. After
another warm day on wed, this front will make a swd push wed
evening and help escort the hurricane out to sea, but will also
serve to scour out the low-level warmth and moisture from the
area.

Models are somewhat aggressive on moisture ahead of the
approaching boundary, which appears to be contributing to
broader coverage of precipitation as the models develop
instability. Given a more-realistic dewpoint in the low-mid 60s,
instability is more meager, so pops with the frontal passage were
reduced from the default model blend values.

High pressure returns on Thu with a marked cooldown expected.

After the summer-like temperature experienced recently, maxima
in the upper 60s will feel rather cool, although hardly
unseasonable.

Long term Friday through Monday
As an upper ridge builds into the great plains, a shortwave
trough will move sewd across the great lakes. Lacking boundary-
layer moisture, the extent of any precipitation is unclear. But
models signal at least a possibility of measurable light
precipitation during the wave's passage on fri.

In the wake of the wave, high pressure returns for Saturday,
with seasonable temperature through the weekend. Models diverge
thereafter on the upper pattern, with both models indicating a
wrn trough, but the GFS suggesting an amplifying upper ridge for
the ern CONUS and a slower approach of the trough to the great
lakes region. Given these discrepancies, did not deviate
significantly from the default model blend values in the
extended periods.

Aviation 01z Tuesday through Saturday
High pressure will maintain light wind andVFR through the taf
period.

Outlook
Restrictions are possible with Wednesday and Friday cold fronts.

Climate
While we will not be quite as warm as over the weekend,
temperature this afternoon still will be 15 or more degrees
above seasonal averages this afternoon. Here are the local
record high temperatures for Monday:
pit: 92 (1881, 1900)
zzv: 94 (1908)
mgw: 93 (1930)
duj: 87 (2007)
hlg: 91 (1934)
phd: 91 (2007)

Pbz watches warnings advisories
Md... None.

Oh... None.

Pa... None.

Wv... None.



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pittsburgh - Allegheny County Airport, PA4 mi63 minN 010.00 miFair76°F63°F64%1016.4 hPa
Pittsburgh, Pittsburgh International Airport, PA18 mi65 minN 010.00 miMostly Cloudy74°F64°F71%1016.8 hPa

Wind History from AGC (wind in knots)
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
Last 24hrCalmE3NE3NE3CalmNE4CalmE3E3CalmCalmCalmSE4S3S63S6SE3S4S3SW3CalmCalmCalm
1 day agoCalmN3NW3CalmN3CalmCalmCalmCalmCalmCalmNE4E53E5E644E4E4CalmNE3CalmE3
2 days agoNE3NE3NE3N3CalmCalmN3CalmCalmCalmCalmCalmCalm3Calm4NE4NE4NE4CalmCalmCalmCalmCalm

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Pittsburgh, PA (23,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Pittsburgh, PA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.