Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Whitaker, 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 5:55AMSunset 8:37PM Thursday May 23, 2019 1:16 AM EDT (05:16 UTC) Moonrise 12:00AMMoonset 8:58AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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 Whitaker , PA
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location: 40.4, -79.89     debug


Area Discussion for - Pittsburgh, PA
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Fxus61 kpbz 230456 aac
afdpbz
area forecast discussion... Updated
national weather service pittsburgh pa
1256 am edt Thu may 23 2019

Synopsis
The risk for showers and storms will continue today as a late day
cold front pushes through. Strong to severe storms are possible,
particularly in the afternoon and evening.

Near term through today
Scattered showers and storms will be ending late tonight as the
moisture riding along a surface front, likely a dewpoint boundary,
exits to the east. The convection may be fueled by weak low-level
convergence and lingering boundaries from previous convection. The
weak confluence will wane late tonight as surface winds across the
entire area become more southerly. With surface dewpoints slowly
rising in the warm advection regime, temperatures overnight will
remain well above normal.

Two periods of showers and storms are expected today, one this
morning and a second this afternoon with the cold front. A pre-
frontal trough will cross the area this morning. This energy will
induce upper level height falls as it moves through, which will
eventually assist in frontal passage late in the day. The convection
this morning will be encountering a relatively stable atmosphere, and
should remain below severe levels. Stronger convection is expected
this afternoon, along and ahead of a southeastward moving cold front.

Still seeing model differences on timing and placement of more
intense convection. Atmosphere will quickly destabilize behind the
morning shortwave, and plenty of moisture will be available as
dewpoints rise into the mid to upper 60s. Winds aloft will become
north of westerly, allowing for a cool down at the upper levels,
increasing atmospheric instability. The mid-levels however, will
remain warm which will help to keep the atmosphere capped until the
front arrives. Another limiting factor will be how much cloud cover
is left over from the morning rain, which will limit surface
temperature rise and perhaps prevent achievement of convective temps.

Models are indicting a break behind the morning rain, and what the
atmosphere does, in terms of cloud cover and increased buoyancy,
during this break, will be critical to storm development along the
front. Forecast soundings are portraying a strengthening wind field
aloft which will increase the threat for damaging winds gusts, and
the increase in shear will also create a scenario where convective
updrafts can become stronger and long lived. All of these elements
will need to be closely monitored throughout the day.

Short term tonight through Saturday
The cold front will pick up speed and approach my southern border
late this evening. Activity will end from northwest to southeast
behind the boundary, and cloud cover will decrease in the same
manner.

Height rises and a weak surface high will keep Friday dry.

Shower and storm chances will ramp up again Saturday afternoon as
the next shortwave rides over top of the upper level ridge.

Long term Saturday night through Wednesday
The long term will be dominated by the strength and placement of the
eastern CONUS ridge. The area will lie on the northern periphery of
said ridge, meaning the warm and active pattern will continue.

Aviation 06z Thursday through Monday
Showers and isolated thunder are possible this evening and overnight
as a warm front crosses the region. A second round of showers and
possible thunderstorms will cross the area Thursday morning, then
thunderstorms are expected along the cold frontal boundary Thursday
afternoon evening.VFR conditions will prevail through most of the
period, though restrictions will be possible with heavier rain storms
especially during the afternoon and evening. With lower confidence
in thunderstorm timing and coverage, have included only vcts for
Thursday afternoon.

Wind will veer from southerly to westerly through the period, with
gusty wind to near 20 knots expected by mid-morning.

Outlook
Periodic restrictions are possible through the weekend as
disturbances round the upper level ridge.

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 mi23 minNE 310.00 miOvercast68°F57°F68%1018.5 hPa
Pittsburgh, Pittsburgh International Airport, PA19 mi25 minNE 610.00 miMostly Cloudy70°F62°F76%1018.8 hPa

Wind History from AGC (wind in knots)
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Last 24hrCalmE5E4E6E7E7E8E8SE9
G16
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1 day agoNW10
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N46--N54--3N3--5N3N5E4CalmCalmCalmCalmCalmE4
2 days agoS7SW9SW10SW12
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NW8

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 (1,6,7,8)
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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.