Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Seven Springs, PA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:30AMSunset 8:08PM Tuesday August 20, 2019 9:14 PM EDT (01:14 UTC) Moonrise 9:55PMMoonset 10:10AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 Seven Springs , PA
   Hourly   EDIT   Help
location: 40.04, -79.3     debug


Area Discussion for - Pittsburgh, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kpbz 202135
afdpbz
area forecast discussion
national weather service pittsburgh pa
535 pm edt Tue aug 20 2019

Synopsis
Warmth, humidity, and daily thunderstorm chances will continue
through mid-week. Less-humid air and seasonable temperature can be
expected for the weekend.

Near term until 6 am Wednesday morning
Quick early evening update to decrease pops based off ongoing trends
and latest mesoanalysis as convection remains limited in coverage
and instability begins to wane. No changes to the forecast later
tonight with shower storm coverage increasing with better upper
support. Previous discussion follows..

Previous...

12z pbz iln raobs feature steep lapse rates, abundant boundary-layer
moisture and only a shallow inversion, modestly capped by a warm air
layer just below h7. Although quasi-zonal flow persists aloft,
the presence of low-amplitude shortwave troughs in the flow will
support an increase in deep, moist convection late this afternoon.

Morning thunderstorms spread a cirrus shield into swrn pa, slowing
diurnal heating briefly. However, with strong heating in central oh
thru the day amid 20-30 kt mid-level flow and continued moisture
advection, the atmosphere will be inhibited mainly by
subsidence warming in the wake of the morning wave.

Although shear is weak, the ingredients are present for strong
updraft pulses in an environment that will be characterized by very
high dcape. The net result will be a downburst potential (and
possibly a few hailstones) from any intense storms that can develop
despite the lingering subsidence warm air.

A few storms are firing on the higher terrain in the ERN zones, and
near cmh as a shortwave trough approaches from the west. Clustering
cu duj-phd may also suggest a few storms could develop in this region
through early evening as the trough approaches. It may be that one
strong storm with potent outflow is all that is needed to increase
initiation.

Storms developing near cmh in advance of a persistent MCS in ERN in
may develop themselves into a convective complex that could move into
ern oh this evening, although the exact evolution of this system
remains unclear even at this proximate juncture.

Short term 6 am Wednesday morning through Thursday night
Instability will remain on wed, but lapse rates are expected to
weaken (either from being worked over by Tue storms or from advection
of warmer air aloft). So, although thunderstorms can be expected
ahead of a swd-advancing cold front, potential for strong updrafts
is diminished by Wed afternoon.

A cold front will advance toward the region on thu, and greatest
rain chances shift swd with the boundary. There is uncertainty as to
where the boundary ultimately stalls, but it appears that its resting
place may be along the mason-dixon line, providing a focus for
showers and storms on Thu thu night in association with a strong
shortwave trough prior to the front's swd departure.

Long term Friday through Tuesday
As high pressure builds in behind the front amid a broad upper-level
trough in the ERN conus, and dry air erodes any low-level moisture,
a seasonal end to the week is anticipated, with little humidity and
minimal rain chances.

Aviation 22z Tuesday through Sunday
Vfr largely expected through the evening. Current convection across
the region should increase in coverage later tonight with better
upper support... With brief MVFR possible associated with any
showers storms that impact any TAF locations.

MVFR ifr restrictions may develop Wednesday morning dependent upon
on influx of moisture in the boundary layer from overnight
convection.

Outlook
Periodic restrictions are likely through Friday morning as a series
of disturbances cross the region.VFR dry weather conditions will
return this weekend.

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. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Latrobe / Westmorland, PA18 mi25 minN 010.00 miClear77°F69°F79%1015.9 hPa

Link to 5 minute data for KLBE

Wind History from LBE (wind in knots)
10
PM
11
PM
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
Last 24hrCalm--Calm--Calm--CalmCalm--CalmCalmCalmCalmCalmCalmSW8SW6SW8SW8--SW10SW8S5Calm
1 day agoCalmCalmCalmCalmCalmCalm--CalmE4CalmSW6S4SW4--W8SW6W4W10--W10W10W8W5Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS8SW10SW11S9--SW9S9SW12S6S5CalmCalm

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (21,6,7,8)
      (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.