Alert archive / Pennsylvania / Flash Flood Warnings in 2013

Flash Flood Warning 22, NWS Pittsburgh, PA

July 10, 2013Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jul 10, 2013, 3:29 PM EDT for Mercer County, Pennsylvania. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 10, 2013, 3:29 PM EDT (19:29 UTC)
Expired: Jul 10, 2013, 7:30 PM EDT
In force: 4 hr
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 83 km from the middle of the area, began a volume at 19:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 7:00 PM EDT	FLASH FLOOD	Mercer, PA	AIRPORT RD CLOSED DUE TO FLOODING

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 211 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.5 hours before the alert went out and 97 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 434 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

642 
WGUS51 KPBZ 101929
FFWPBZ
PAC085-102330-
/O.NEW.KPBZ.FF.W.0022.130710T1929Z-130710T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
329 PM EDT WED JUL 10 2013

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MERCER COUNTY IN NORTHWEST PENNSYLVANIA...

* UNTIL 730 PM EDT

* AT 326 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM REPORTED OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF WILL CAUSE FLOODING OF SMALL STREAMS...LOW LYING
SPOTS ON ROADS...AND POOR DRAINAGE AREAS. MOVE TO HIGHER GROUND NOW.

PLEASE REPORT HIGH WATER BY CALLING...412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.

&&

LAT...LON 4117 8000 4107 8009 4112 8015 4112 8025
      4113 8026 4113 8053 4148 8053 4149 8052
      4149 8013 4149 8012 4149 8000

$$
34

2 follow-up statements

622 
WGUS71 KPBZ 102127
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
527 PM EDT WED JUL 10 2013

PAC085-102330-
/O.CON.KPBZ.FF.W.0022.000000T0000Z-130710T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER PA-
527 PM EDT WED JUL 10 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
MERCER COUNTY...

AT 521 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO STONEBORO...
MAURICE K GODDARD STATE PARK...GREENVILLE AND FREDONIA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HIGH WATER BY CALLING...412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
WEDNESDAY EVENING FOR EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND
NORTHERN WEST VIRGINIA.

&&

LAT...LON 4117 8000 4107 8009 4112 8015 4112 8025
      4113 8026 4113 8053 4148 8053 4149 8052
      4149 8013 4149 8012 4149 8000

$$

34

377 
WGUS71 KPBZ 102323
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
723 PM EDT WED JUL 10 2013

PAC085-102331-
/O.EXP.KPBZ.FF.W.0022.000000T0000Z-130710T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER PA-
723 PM EDT WED JUL 10 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 730 PM EDT FOR MERCER
COUNTY...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROAD. FLOOD WATER IS USUALLY DEEPER THAN
IT APPEARS...AND ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. MAKE THE SMART CHOICE...TURN AROUND...
DONT DROWN.

PLEASE REPORT HIGH WATER BY CALLING...412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
WEDNESDAY EVENING FOR SOUTHWESTERN PENNSYLVANIA AND NORTHERN WEST
VIRGINIA.

LAT...LON 4117 8000 4107 8009 4112 8015 4112 8025
      4113 8026 4113 8053 4148 8053 4149 8052
      4149 8013 4149 8012 4149 8000

$$
34

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this flash flood warning went out at Jul 10, 2:19 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jul 10, 2:19 PM EDT, 1 hour 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
219 PM EDT WED JUL 10 2013

.SYNOPSIS...
PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE UNTIL A COLD
FRONT CROSSES THE REGION TONIGHT. BUILDING HIGH PRESSURE WILL
FOLLOW FOR THE REMAINDER OF THE WEEK.

&&

.NEAR TERM /THROUGH THURSDAY/...
MRNG CNVCTN HAS VACATED THE RGN...LEAVING WDSPRD FLASH FLOODING IN
ITS WAKE. A LULL IS XPCD EARLY THIS AFTN AS ATMOSPHERE RECOVERS.

VERY MOIST AND UNSTABLE AMS RMNS IN PLACE...WITH A PLUME OF STEEP
MID-LVL LAPSE RATES NOTED IN 12Z KDTX RAOB XPCD TO ADVCT ESEWD.
WITH BKN SUNSHINE XPCD TO SPREAD EWD FROM OH INTO PA...MDT-STG
INSTBY WILL MATERIALIZE.

VIGOROUS TSTMS ONGOING FROM IN TO MI WILL SPREAD EWD WITH
ASSOCIATED SHRTWV TROF. AS THE VERY MOIST AMS IN ERN OH AND WRN PA
HEATS...VERY MINIMAL CAP WILL BE ERODED. CLUSTERS OF TSTMS MAY
CONSOLIDATE INTO MCS AS THEY PROGRESS EWD ACRS OH...PSBLY LEADING
TO A SGFNT WIND DMG THREAT.

PWATS RMN EXTREMELY HIGH AS WELL. IN LIGHT OF MRNG FLOODING RAIN
AND XPCD ADDITIONAL VERY HVY RAIN...FLASH FLOOD WATCH WAS EXPANDED
AND RETAINED THRU TNGT...WHEN CDFNT PASSAGE WILL EVACUATE THE MST
AMS.

SLGTLY COOLER MAXIMA XPCD ON THU AS CLD CVR IN WAKE OF CDFNT WILL
INHIBIT HEATING. MAXIMA FCSTD IN THE UPR 70S.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/...
COOLER AND LESS HUMID CONDS WL FOLLOW FROPA AS HIGH PRES BLDS IN.
AN UPR TROF WL MOVE ACRS THE GT LKS THU EVE BUT NO GOOD MOISTURE
TO WORK WITH SO LEFT FCST DRY. EXP SLIGHTLY BLO SEASONAL AVG
TEMPS THRU THE PD.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
HIGH PRES IS EXPD TO BE IN CTRL MUCH OF THE PD. WIDE RANGE OF MDL
SOLUTIONS ERLY NEXT WK IN HANDLING OF AN UPR LOW OVER THE NERN
CONUS. WENT WITH A NAEFS/HPC SOLN WHICH KEEPS MORE UPR LVL RIDGING
ACRS THE RGN. KEPT SLGT CHC POPS ERLY IN THE WK...WITH SLIGHTLY
BETTER CHCS TWD MID WK AS THE HIGH BEGINS TO BREAK DOWN. EXP ABV
SEASONAL AVG TEMPS THRU THE PD.

&&

.AVIATION /17Z WEDNESDAY THROUGH SUNDAY/...
VFR CONDITIONS HAVE RETURNED TO MOST OF THE TAF SITES THIS
AFTERNOON. HOWEVER...THIS WILL BE TEMPORARY AS SHOWERS AND
THUNDERSTORMS WILL ONCE AGAIN REDEVELOP OVER THE REGION AND EXPAND
EASTWARD AHEAD OF A COLD FRONT. WITH MANY OF THE HI RES MODELS
HANDLING THE TIMING SIMILARLY...HAVE ADDED TEMPO TSRA GROUPS TO ALL
THE TAFS. EXPECT MVFR AND OCCASIONAL IFR RESTRICTIONS WITH
THUNDERSTORMS THROUGH THE AFTERNOON AND EVENING. SOME OF THESE
THUNDERSTORMS COULD BE SEVERE AND ALSO CONTAIN VERY HEAVY
RAINFALL...FURTHER HAMPERING VISIBILITIES.

CONDITIONS MAY TEMPORARILY IMPROVE BEHIND THE COLD FRONT BEFORE
FOG/STRATUS DEVELOPS OVERNIGHT.

SOUTHWESTERLY WINDS WILL SHIFT TO NORTHWESTERLY WITH THE FRONTAL
PASSAGE OVERNIGHT.

VFR SHOULD RETURN FOR THURSDAY AS HIGH PRESSURE BUILD EASTWARD.

OUTLOOK.../THURSDAY NIGHT THROUGH MONDAY/...
GENERAL VFR CONDITIONS ARE EXPECTED THROUGH THE PERIOD WITH HIGH
PRESSURE IN CONTROL.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR MDZ001.
OH...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR OHZ039>041-048>050-
     057>059-068-069.
PA...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR PAZ007>009-013>016-
     020>023-029-031-073>076.
WV...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR WVZ001>004-012-
     021>023-041.

&&

KRAMAR/34

Hazardous weather outlook, Jul 10, 1:06 PM EDT, 2 hours 23 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PITTSBURGH PA
106 PM EDT WED JUL 10 2013

MDZ001-PAZ009-015-016-022-023-031-073>076-WVZ004-012-021>023-041-
111715-
GARRETT-FOREST-CLARION-JEFFERSON PA-ARMSTRONG-INDIANA-GREENE-
WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-MARSHALL-
WETZEL-MARION-MONONGALIA-PRESTON-TUCKER-
106 PM EDT WED JUL 10 2013

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...NORTHWEST
PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL
PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF
WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.

THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AS A VERY MOIST AND
UNSTABLE AIRMASS REMAINS IN THE REGION. SOME STORMS WILL BECOME
SEVERE...WITH DAMAGING WIND GUSTS AND LARGE HAIL THE PRIMARY
THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

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.

OHZ039>041-048>050-057>059-068-069-PAZ007-008-013-014-020-021-029-
WVZ001>003-111715-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-LAWRENCE-
BUTLER-BEAVER-ALLEGHENY-WASHINGTON-HANCOCK-BROOKE-OHIO-
106 PM EDT WED JUL 10 2013

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...SEVERE THUNDERSTORM WATCH 406 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST
PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA
AND NORTHERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.
   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

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.

KRAMAR

In the hours before

Local storm report, Jul 10, 9:56 AM EDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
956 AM EDT WED JUL 10 2013

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

0845 AM     FLASH FLOOD      MIDWAY                  40.37N  80.29W
07/10/2013                   WASHINGTON         PA   PUBLIC

            NOBLESTOWN ROAD FLOODED AND TOWN OF MIDWAY IS
            IMPASSABLE

&&

EVENT NUMBER PBZ1302415

DARNLEY

Local storm report, Jul 10, 10:46 AM EDT, 4 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1046 AM EDT WED JUL 10 2013

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

1042 AM     FLASH FLOOD      CLIFTON                 40.33N  80.07W
07/10/2013                   ALLEGHENY          PA   NWS EMPLOYEE

            12 INCHES OF WATER RUNNING ACROSS RT 19

&&

EVENT NUMBER PBZ1302416

DARNLEY

Local storm report, Jul 10, 11:59 AM EDT, 3 hours 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1159 AM EDT WED JUL 10 2013

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

1140 AM     FLASH FLOOD      2 NNW MURDOCKSVILLE     40.51N  80.37W
07/10/2013                   BEAVER             PA   NWS EMPLOYEE

            INTERSECTION OF PARK ROAD AND ROUTE 30 FLOODED...AREAS
            ALSO FLOODED UNDER ROUTE 30 BRIDGE....RACCOON CREEK AREA

&&

EVENT NUMBER PBZ1302417

BK

Local storm report, Jul 10, 12:20 PM EDT, 3 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1220 PM EDT WED JUL 10 2013

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

1213 PM     FLASH FLOOD      OAKDALE                 40.40N  80.19W
07/10/2013                   ALLEGHENY          PA   TRAINED SPOTTER

            ROBINSON RUN IS FLOODING CLINTON AVE AND UNION AVE

&&

EVENT NUMBER PBZ1302418

DARNLEY

Local storm report, Jul 10, 1:40 PM EDT, 1 hour 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
140 PM EDT WED JUL 10 2013

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

1130 AM     FLASH FLOOD      2 SSE EVERSON           40.06N  79.57W
07/10/2013                   FAYETTE            PA   911 CALL CENTER

            THE EVERSON EXIT OFF RT 119 WAS CLOSED DUE TO FLOODING

&&

EVENT NUMBER PBZ1302419

DARNLEY

Special weather statement, Jul 10, 2:45 PM EDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
245 PM EDT WED JUL 10 2013

PAZ007-101915-
MERCER PA-
245 PM EDT WED JUL 10 2013

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN MERCER COUNTY...

AT 244 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTH OF
FARRELL...MOVING EAST AT 20 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. HEAVY RAIN WILL
POND WATER ON ROADS AND QUICKLY FILL DITCHES AND SMALL STREAMS.

  LOCATIONS IMPACTED INCLUDE...
  FARRELL...            SHARON...             HERMITAGE...

STORM INTENSITY IS INCREASING...AND SEVERE WEATHER MAY DEVELOP
RAPIDLY. REMAIN ALERT...AND BE PREPARED TO TAKE ACTION IF WARNINGS
ARE ISSUED.

PLEASE REPORT SIGNIFICANT WEATHER BY CALLING...412-262-1988...POSTING
TO THE NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER
@NWSPITTSBURGH.

LAT...LON 4134 8030 4113 8021 4113 8052 4115 8053
      4124 8053

KRAMAR

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 8:08 PM EDT	Special Weather Statement	PBZ	Allegheny	37 min
Jul 9, 8:40 PM EDT	Special Weather Statement	PBZ	Butler	50 min
Jul 10, 5:44 AM EDT	Flash Flood Warning	PBZ	Allegheny	3 hr
Jul 10, 6:49 AM EDT	Flash Flood Warning	PBZ	Allegheny, Beaver, Washington	7 hr
Jul 10, 6:59 AM EDT	Special Weather Statement	PBZ	Clarion, Mercer	91 min
Jul 10, 8:28 AM EDT	Special Weather Statement	PBZ	Beaver	32 min
Jul 10, 8:38 AM EDT	Flash Flood Warning	PBZ	Washington	6 hr
Jul 10, 8:43 AM EDT	Flash Flood Warning	PBZ	Fayette, Westmoreland	3 hr
Jul 10, 8:52 AM EDT	Special Weather Statement	PBZ	Beaver	23 min
Jul 10, 9:05 AM EDT	Flash Flood Warning	PBZ	Westmoreland	115 min
Jul 10, 9:05 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver	40 min
Jul 10, 10:57 AM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	48 min
Jul 10, 2:45 PM EDT	Special Weather Statement	PBZ	Mercer	30 min
Jul 10, 2:51 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	24 min
Jul 10, 3:10 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	50 min
Jul 10, 3:37 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	38 min
Jul 10, 3:49 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	41 min
Jul 10, 4:01 PM EDT	Flash Flood Warning	PBZ	Venango	4 hr
Jul 10, 4:03 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence	42 min
Jul 10, 4:07 PM EDT	Flash Flood Warning	PBZ	Allegheny	6 hr
Jul 10, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	49 min
Jul 10, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence	47 min
Jul 10, 4:18 PM EDT	Flash Flood Warning	PBZ	Lawrence	6 hr
Jul 10, 4:28 PM EDT	Tornado Warning	PBZ	Lawrence	32 min
Jul 10, 4:35 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	40 min
Jul 10, 4:45 PM EDT	Tornado Warning	PBZ	Butler, Lawrence	30 min
Jul 10, 4:50 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	40 min
Jul 10, 4:52 PM EDT	Flash Flood Warning	PBZ	Butler	5 hr
Jul 10, 5:16 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	44 min
Jul 10, 5:22 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	38 min
Jul 10, 5:25 PM EDT	Flash Flood Warning	PBZ	Beaver	4 hr
Jul 10, 5:30 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	45 min
Jul 10, 5:34 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	26 min
Jul 10, 5:37 PM EDT	Flash Flood Warning	PBZ	Clarion	4 hr
Jul 10, 5:42 PM EDT	Tornado Warning	PBZ	Allegheny, Beaver, Washington	18 min
Jul 10, 5:48 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	42 min
Jul 10, 5:52 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Jefferson	38 min
Jul 10, 5:58 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Lawrence and 2 more	47 min
Jul 10, 6:01 PM EDT	Flash Flood Warning	PBZ	Washington	4 hr
Jul 10, 6:19 PM EDT	Flash Flood Warning	PBZ	Armstrong, Jefferson	4 hr
Jul 10, 6:26 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	49 min
Jul 10, 6:28 PM EDT	Flash Flood Warning	PBZ	Indiana	4 hr
Jul 10, 6:28 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	47 min
Jul 10, 6:29 PM EDT	Special Weather Statement	PBZ	Greene	46 min
Jul 10, 6:33 PM EDT	Flash Flood Warning	PBZ	Fayette, Westmoreland	3 hr
Jul 10, 6:47 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	43 min
Jul 10, 6:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Westmoreland	49 min
Jul 10, 7:17 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	28 min
Jul 10, 7:28 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	47 min

Nearby

Flash Flood Warnings in Pennsylvania, 2013 Every flash flood warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.