Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
Murrysville, 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 7:35AMSunset 4:55PM Tuesday December 18, 2018 10:07 AM EST (15:07 UTC) Moonrise 2:20PMMoonset 2:47AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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 Murrysville , PA
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location: 40.45, -79.68     debug


Area Discussion for - Pittsburgh, PA
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Fxus61 kpbz 181249
afdpbz
area forecast discussion
national weather service pittsburgh pa
749 am est Tue dec 18 2018

Synopsis
High pressure will support dry weather through Wednesday. Low
pressure is then projected to return rain to the region for the
latter half of the week.

Near term through tonight
With the sunrise update, just some minor tweaks were made to
hourly temperatures and dewpoints. Previous discussion follows.

Stratocumulus clouds will continue to blanket much of the
region as cold northwest flow upslopes off the lakes. Coverage
will diminish over the course of the day under increasing
subsidence with building high pressure. Northwesterly flow will
stunt temperature recovery during the day... But locations south
and west of pgh where cloud cover should decrease earliest
could see values get to near slightly below normal. Temperatures
will drop to slightly below normal overnight with minimal cloud
coverage and light winds allowing for stronger radiational
cooling.

Short term Wednesday through Thursday
Dry conditions continue on Wednesday with temperatures
increasing to the mid upper 40s as longwave troughing over the
plains continues to transition east and winds aloft become
southwesterly. Rain chances will then begin to increase Thursday
as the aforementioned trough deepens... Begins to take on a
negative tilt... And results in surface low press developing over
the gulf states that is progged to track nne along the
appalachians.

Long term Thursday night through Monday
Rain is likely by Thursday night with periods of more moderate
rain overnight into Friday as the sfc low continues to
strengthen and deep sly swly moisture fetch is established.

Latest model runs show reasonable continuity with previous runs
in regards to the storm track which keeps the most substantial
precipitation east of the forecast area... And have one inch
forecast on average through Friday afternoon based off ensemble
means and analogs... Which also falls close to latest wpc
guidance. This will change in the coming days as more guidance
becomes available and confidence increases in track.

In the system's wake, precipitation may change briefly to snow
on sat. If this transpires, any accumulation is not expected to
be of substance.

After the warm second half of the work week, temperatures will
fall back into the 30s for the weekend and have limited diurnal
range with persistent cloud cover and gusty winds.

Aviation 13z Tuesday through Saturday
Eastward sliding high pressure will eventually evacuate the
general MVFR stratocu to the east this morning and early
afternoon, allowing for clear skies at all PORTS by late in the
day.

Outlook...

restrictions are likely in rain for the latter half of the week
with the approach and passage of deep 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, PA15 mi75 minNNW 910.00 miOvercast31°F21°F67%1023.7 hPa
Latrobe / Westmorland, PA19 mi78 minNW 410.00 miOvercast32°F23°F69%1022 hPa

Wind History from AGC (wind in knots)
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Last 24hr6
G18
W12
G19
NW10
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NW11
G24
5
G16
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G28
NW7NW10
G22
NW9
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NW4NW5W65NW8NW6NW9N6N9
G18
NW7NW4N9NW5
1 day agoN3N5N6N5NW4N4NW3W6W5W8W7SW6W6W10
G21
W7
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W10SW7SW13SW12SW14SW11W12W13
G18
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G20
2 days agoNE8NE6E9
G18
E8E54N9
G19
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G18
NE8NE9
G16
NE665
G17
NE6
G16
6NE7NE6NE7NE7NE7NE75N8NE6

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    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 (10,2,3,4)
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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.