Severe Thunderstorm Warning 213, NWS Pittsburgh, PA

Area Forecast Discussion
National Weather Service Pittsburgh PA
253 PM EDT Tue Aug 22 2017

.SYNOPSIS...
Quieter weather Wednesday before showers return Thursday.
Cooler and less humid are the themes through the weekend.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
Showers and storms producing damaging winds will move through
the region this afternoon and early evening. Still expect
another line of showers albeit not severe associated with the
front.

We are monitoring the potential for a high water threat
given rainfall amounts have ranged between convective and
tropical ZR. In wake of the front there could be fog developed,
but with a decent wind flow most of the fog won't be
widespread. It should be confined to the deeper gorges.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/...
Northwest flow aloft allows ripples of energy to round the base
of the H5 trough axis positioned over the eastern United States.
Plenty of low level moisture in place through Thursday evening
to warrant the mention of scattered showers especially for our
northern counties closer to Lake Erie. The strongest wave
crosses Thursday afternoon, which should bring showers given
cooling aloft to the Mason / Dixon line. Future shifts may have
to extend the mention of showers to northern West Virginia and
western Maryland. Do not expect to see much sunshine Thursday as
any heating will fill the sky with a stratocu field.

Daytime showers will wane with sunset while anticyclonic
vorticity advection. This will start the run of a dry weather
the balance of the short term.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
Highlights:
- Pleasant weather projected
- Dry most of the extended
- Below normal temps

The departing mid level trough and associated low pressure system
owes to several nice weather days late this week through the
weekend.  Surface high pressure builds south from the Great Lakes
and with northerly flow on the front end expect below normal
temperatures to continue into the middle of next week.  Toward the
end of the forecast /next tuesday/, moisture from the Gulf
resulting from Harvey may provide a canopy of high clouds, but
still plenty of time to resolve that over the coming days.

&&

.AVIATION /17Z TUESDAY THROUGH SATURDAY/...
Brief IFR/MVFR weather could impact terminals through 1Z as
showers and thunderstorms pass. Once the cold front rolls
through this evening VFR weather will return. There is a low
probability of fog development during the predawn hours.

.Outlook...
No widespread IFR weather is forecast.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...None.
OH...None.
PA...None.
WV...None.

&&

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
305 AM EDT Tue Aug 22 2017

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007-013-014-020>023-029-
031-073>076-WVZ001>004-012-021-509>514-230715-
Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-
Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Lawrence-Butler-
Beaver-Allegheny-Armstrong-Indiana-Washington-Greene-Westmoreland-
Westmoreland Ridges-Fayette-Fayette Ridges-Hancock-Brooke-Ohio-
Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
305 AM EDT Tue Aug 22 2017

This Hazardous Weather Outlook is for western Maryland, east
central Ohio, northwest Pennsylvania, southwest Pennsylvania, west
central Pennsylvania, western Pennsylvania, northern West Virginia
and northern panhandle of West Virginia.

.DAY ONE...Today and Tonight.

Scattered severe thunderstorms are possible this afternoon and
evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

PAZ008-009-015-016-230715-
Venango-Forest-Clarion-Jefferson-
305 AM EDT Tue Aug 22 2017

This Hazardous Weather Outlook is for northwest Pennsylvania and
west central Pennsylvania.

.DAY ONE...Today and Tonight.

Numerous severe thunderstorms are possible this afternoon and early
evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

07

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
339 PM EDT TUE AUG 22 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0229 PM     TSTM WND DMG     MURRYSVILLE             40.44N  79.66W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES DOWN ON SCHOOL ROAD

&&

EVENT NUMBER PBZ1702080

98

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE PITTSBURGH PA
340 PM EDT TUE AUG 22 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0113 PM     TSTM WND DMG     AUGUSTA                 40.69N  81.02W
08/22/2017                   CARROLL            OH   LAW ENFORCEMENT

            SEVERAL TREES DOWN

0115 PM     TSTM WND DMG     2 NNW NORRISTOWN        40.69N  80.97W
08/22/2017                   CARROLL            OH   LAW ENFORCEMENT

0118 PM     TSTM WND DMG     DARLINGTON              40.81N  80.42W
08/22/2017                   BEAVER             PA   911 CALL CENTER

            TREES DOWN

0128 PM     TSTM WND DMG     2 SE NEW BEAVER         40.86N  80.33W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            SEVERAL TREES DOWN ON POSSUM HOLLOW ROAD

0128 PM     TSTM WND DMG     KOPPEL                  40.83N  80.32W
08/22/2017                   BEAVER             PA   911 CALL CENTER

            TREES DOWN

0129 PM     TSTM WND DMG     1 ENE WAMPUM            40.89N  80.33W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            SEVERAL TREES DOWN

0131 PM     TSTM WND DMG     2 NNE ELLWOOD CITY      40.89N  80.27W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            TREE DOWN ON OLD PITTSBURGH ROAD AND HOLLOW ROAD

0132 PM     TSTM WND DMG     4 NE WAMPUM             40.92N  80.28W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            TREES AND POWER LINES DOWN ON HARMONY BAPTIST ROAD AND
            WILEY DRIVE

0132 PM     TSTM WND DMG     ELLPORT                 40.86N  80.26W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            TREES DOWN

0135 PM     TSTM WND DMG     MCDONALD                40.37N  80.23W
08/22/2017                   WASHINGTON         PA   911 CALL CENTER

            NUMEROUS TREES DOWN

0135 PM     DOWNBURST        MCDONALD                40.37N  80.23W
08/22/2017  U0 MPH           WASHINGTON         PA   911 CALL CENTER

            WIDESPREAD TREE DAMAGE. ON RISING ROAD AND LAUREL HILL
            ROAD.

0137 PM     TSTM WND DMG     3 NNW FRYBURG           41.39N  79.47W
08/22/2017                   FOREST             PA   911 CALL CENTER

            TREES DOWN

0137 PM     TSTM WND DMG     6 W BRIDGEVILLE         40.37N  80.21W
08/22/2017                   ALLEGHENY          PA   911 CALL CENTER

            TREE DOWN ON ROBINSON RUN ROAD AT CEMETERY ROAD IN
            SOUTH FAYETTE

0142 PM     TSTM WND DMG     3 NW CALLENSBURG        41.16N  79.59W
08/22/2017                   CLARION            PA   911 CALL CENTER

            TREES DOWN

0142 PM     TSTM WND DMG     PORTERSVILLE            40.93N  80.14W
08/22/2017                   BUTLER             PA   911 CALL CENTER

            TREES DOWN

0143 PM     TSTM WND DMG     CECIL-BISHOP            40.32N  80.19W
08/22/2017                   WASHINGTON         PA   911 CALL CENTER

            SEVERAL TREES DOWN

0145 PM     TSTM WND DMG     1 S PORTERSVILLE        40.91N  80.14W
08/22/2017                   BUTLER             PA   TRAINED SPOTTER

            NUMEROUS TREES DOWN. TREE FELL ON ONE VEHICLE. ONE
            PERSON INJURED AND ON WAY TO HOSPITAL.

0151 PM     TSTM WND DMG     CONNOQUENESSING         40.82N  80.01W
08/22/2017                   BUTLER             PA   911 CALL CENTER

            TREES DOWN

0158 PM     TSTM WND DMG     5 W MARIENVILLE         41.45N  79.17W
08/22/2017                   FOREST             PA   TRAINED SPOTTER

            MULTIPLE TREES DOWN ON GUITONVILLE ROAD AND MULTIPLE
            TREE LIMBS DOWN ON BLOOD ROAD

0200 PM     TSTM WND DMG     2 SW CASTLE SHANNON     40.35N  80.04W
08/22/2017                   ALLEGHENY          PA   911 CALL CENTER

            TREES DOWN ON GREENRIDGE ROAD

0211 PM     TSTM WND DMG     4 NW HARMONY            40.85N  80.17W
08/22/2017                   BEAVER             PA   PUBLIC

            TREES DOWN

0214 PM     TSTM WND DMG     1 S PENN HILLS          40.46N  79.82W
08/22/2017                   ALLEGHENY          PA   911 CALL CENTER

            TREE DOWN ON LIME HOLLOW ROAD AT FRANKSTOWN ROAD

0220 PM     TSTM WND DMG     TRAFFORD                40.38N  79.76W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES AND WIRES DOWN ON 7TH STREET

0220 PM     TSTM WND DMG     MONROEVILLE             40.43N  79.76W
08/22/2017                   ALLEGHENY          PA   SOCIAL MEDIA

            TREES DOWN

0223 PM     TSTM WND DMG     TRAFFORD                40.38N  79.76W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES DOWN ON MURRYSVILLE ROAD

0224 PM     TSTM WND DMG     2 E TRAFFORD            40.39N  79.72W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES AND WIRES DOWN ON ROUTE 130

0229 PM     TSTM WND DMG     2 WSW EXPORT            40.41N  79.66W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES DOWN

0229 PM     TSTM WND DMG     MURRYSVILLE             40.44N  79.66W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES DOWN ON SCHOOL ROAD

0230 PM     TSTM WND DMG     2 SSE MURRYSVILLE       40.41N  79.64W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            MULTPLE TREES AND WIRES DOWN ON HAYMAKER FARM ROAD

0233 PM     HAIL             3 SE MURRYSVILLE        40.41N  79.61W
08/22/2017  E1.00 INCH       WESTMORELAND       PA   PUBLIC

0238 PM     TSTM WND DMG     DELMONT                 40.41N  79.57W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREES DOWN ON TREES MILLS ROAD

0238 PM     TSTM WND DMG     5 ESE MURRYSVILLE       40.41N  79.56W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREE DOWN ON EAST PITTSBURGH STREET

0238 PM     TSTM WND DMG     5 ESE MURRYSVILLE       40.41N  79.57W
08/22/2017                   WESTMORELAND       PA   911 CALL CENTER

            TREE DOWN ON ROUTE 66

&&

EVENT NUMBER PBZ1702048 PBZ1702049 PBZ1702057 PBZ1702050 PBZ1702058
PBZ1702051 PBZ1702067 PBZ1702052 PBZ1702053 PBZ1702054 PBZ1702064
PBZ1702065 PBZ1702068 PBZ1702060 PBZ1702063 PBZ1702056 PBZ1702055
PBZ1702062 PBZ1702076 PBZ1702061 PBZ1702059 PBZ1702069 PBZ1702070
PBZ1702074 PBZ1702066 PBZ1702071 PBZ1702079 PBZ1702080 PBZ1702072
PBZ1702073 PBZ1702075 PBZ1702077 PBZ1702078

Special Weather Statement
National Weather Service Pittsburgh PA
403 PM EDT TUE AUG 22 2017

PAZ007>009-013>015-022-222030-
Armstrong-Forest-Butler-Clarion-Venango-Lawrence-Mercer-
403 PM EDT TUE AUG 22 2017

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND
WILL AFFECT SOUTHEASTERN MERCER...VENANGO...NORTHEASTERN LAWRENCE...
NORTHERN BUTLER...NORTHWESTERN ARMSTRONG...CENTRAL CLARION AND FOREST
COUNTIES...

At 403 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles northeast of Oil City to 9 miles
southwest of Sugarcreek to near Grove City. Movement was east at 35
mph.

Wind gusts up to 45 mph are possible with these storms.

Locations impacted include...
Oil City...                       Grove City...
Franklin...                       Marienville...
Knox...                           Sugarcreek...
Slippery Rock...                  Tionesta...
Hasson Heights...                 Seneca...
Harrisville...                    Parker...

This includes the following highways...
  Interstate 79 in Pennsylvania between mile markers 80 and 85.

  Interstate 80 in Pennsylvania between mile markers 21 and 57.

LAT...LON 4108 7961 4108 8024 4131 8002 4162 7951
      4162 7896
TIME...MOT...LOC 2003Z 285DEG 32KT 4149 7961 4130 7997 4113 8013

Bookbinder

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
409 PM EDT TUE AUG 22 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0219 PM     TSTM WND DMG     1 WSW AVELLA            40.27N  80.49W
08/22/2017                   WASHINGTON         PA   911 CALL CENTER

            VAN ON ITS SIDE WITH A TREE ON TOP OF IT ON FALLEN
            TIMBER ROAD IN INDEPENDENCE TOWNSHIP

&&

EVENT NUMBER PBZ1702081

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
414 PM EDT TUE AUG 22 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0339 PM     TSTM WND DMG     4 SSE WEST MIDDLESEX    41.12N  80.43W
08/22/2017                   LAWRENCE           PA   911 CALL CENTER

            A TREE DOWN ON 8281 MERCER STREET

&&

EVENT NUMBER PBZ1702082

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