Monday, January21, 2019 L-36.com


Marine Weather and Tides
West Homestead, PA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:36AMSunset 5:25PM Monday January 21, 2019 1:56 PM EST (18:56 UTC) Moonrise 6:10PMMoonset 8:01AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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 211752
afdpbz
area forecast discussion
national weather service pittsburgh pa
1252 pm est Mon jan 21 2019

Synopsis
Building high pressure will suppress residual snow showers
later today. Precipitation chances return Tuesday night with
approaching low pressure.

Near term until 6 pm this evening
No major changes were needed for the morning update as a couple
bands snow showers are persisting with encroachment of a cold
core shortwave trough. Dry advection and eventual subsidence
will suppress these as the shortwave departs later this mrng.

Wind chill headlines continue as is.

Expect minimal temperature recovery today with highs about 20
degrees below average.

Short term 6 pm this evening through Thursday
Another cold night, albeit without the wind chill indices, can
be expected as the wind calms and the sky clears under building
high pressure. Single digits either side of zero are
anticipated.

Temperature recovery back toward the averages can be expected
on Tuesday as strong warm advection ensues in advance of plains
low pressure. A 30 to 35 degree low-to-high spread is anticipated.

That plains low is forecast to dig rapidly toward the great
lakes and continue the warm, and eventually moist advection
over the upper ohio region. Those parameters now look sufficient
to eliminate any snow mention for Tuesday night as per
indications of a much warmer overall atmospheric column. The
threat of freezing rain also looks diminished and will be
dependent on lingering sub-freezing ground temperature after
this quick cold snap. Boundary layer warm advection and latent
heating as any ice forms should quickly neutralize that
potential on Wednesday morning. A hazardous weather outlook
mention was restricted to the more favorable north and eastern
zones of the region.

By Wednesday night, the systems cold front is expected to cross
the region with rain showers changing to snow. Progression of
the front will limit accumulation potential an inch or two
through early Thursday.

Long term Thursday night through Sunday
Passage of that front will usher in a period of much colder
weather and snow showers as a broad, high amplitude trough
develops over the conus.

Aviation 18z Monday through Saturday
Cold advection stratocu and lingering snow shower activity will
dissipate this evening as upper level trough shift easts and
surface ridging takes place. Until this time, ceilings will
fluctuate between high MVFR andVFR though visibility should
generally remain greater than 6sm.

Pressure gradient will continue to slacken with wind gusts
diminishing through the eve. NW wind will back to the ssw in
advance of the next system.VFR prevails Tuesday.

Outlook
Restrictions will return late Tuesday Wednesday with the next
low pressure system.

Pbz watches warnings advisories
Md... Wind chill warning until 1 pm est this afternoon for mdz001.

Oh... Wind chill advisory until 1 pm est this afternoon for
ohz039>041-048>050-057>059-068-069.

Pa... Wind chill advisory until 1 pm est this afternoon for
paz007>009-013>016-020>023-029-031-073-075.

Wind chill warning until 1 pm est this afternoon for paz074-
076.

Wv... Wind chill advisory until 1 pm est this afternoon for
wvz001>004-012-021-509-510.

Wind chill warning until 1 pm est this afternoon for
wvz511>514.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pittsburgh - Allegheny County Airport, PA4 mi63 minNW 10 G 186.00 miOvercast with Haze10°F0°F61%1033.6 hPa
Pittsburgh, Pittsburgh International Airport, PA18 mi65 minW 107.00 miLight Snow9°F1°F73%1034.6 hPa

Wind History from AGC (wind in knots)
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Last 24hrNW13
G25
NW15
G23
NW14
G30
NW16
G29
NW13
G25
NW14
G23
NW10
G23
N15
G26
NW11
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NW8W9
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G18
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G16
6
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W7W9W11
G19
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1 day agoE8E8E8E9E12
G17
SE9SE10SE14
G22
E7E8E6NE5NW6N14
G22
NW13
G26
NW14
G33
NW17
G34
NW18
G32
NW15
G27
NW14
G27
NW8
G23
N14
G26
NW15
G23
--
2 days agoW8NW44W4W5SW3SW3W4CalmCalmCalmNE3CalmNE33NE53N4NE5NE6E8NE3E6E8

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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wmap_A
GOES 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 (13,3,4,5)
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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.