Alert archive / Pennsylvania / Flash Flood Warnings in 2013

Flash Flood Warning 20, NWS Pittsburgh, PA

July 10, 2013Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jul 10, 2013, 9:05 AM EDT for Westmoreland County, Pennsylvania. It was in force for 115 min. 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, 9:05 AM EDT (13:05 UTC)
Expired: Jul 10, 2013, 11:00 AM EDT
In force: 115 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

County Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 13:08 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, 9:07 AM EDT	FLASH FLOOD	1 E Irwin, PA	LANDSLIDE REPORTED ON TURNER VALLEY ROAD DUE TO FLASH 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 2 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, 1.1 hours before the alert went out and 58 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.

299 
WGUS51 KPBZ 101305
FFWPBZ
PAC129-101500-
/O.NEW.KPBZ.FF.W.0020.130710T1305Z-130710T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN WESTMORELAND COUNTY IN SOUTHWEST PENNSYLVANIA...

* UNTIL 1100 AM EDT

* AT 900 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM REPORTED OVER THE WARNED AREA.

AN ADDITIONAL ONE HALF TO THREE QUARTERS OF AN INCH OF RAIN IS 
EXPECTED OVER THE REGION...WHICH WILL CONTINUE TO CAUSE PONDING OF 
WATER ON ROADWAYS...AND ALLOW FOR ALREADY SWOLLEN CREEKS TO RISE. 

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 4020 7911 4034 7978 4044 7970 4053 7970
      4055 7977 4060 7976 4067 7969 4063 7958
      4056 7956 4054 7946 4049 7946 4045 7939
      4048 7937 4046 7930 4041 7927 4041 7916
      4037 7912 4042 7903 4039 7897

$$
34

2 follow-up statements

326 
WGUS71 KPBZ 101409
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1009 AM EDT WED JUL 10 2013

PAC129-101500-
/O.CON.KPBZ.FF.W.0020.000000T0000Z-130710T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WESTMORELAND PA-
1009 AM EDT WED JUL 10 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR
WESTMORELAND COUNTY...

AT 1004 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE VERY HEAVY RAIN FROM A LINE OF THUNDERSTORMS OVER THE 
WARNED AREA. AN ADDITIONAL ONE HALF TO THREE QUARTERS OF INCH OF 
RAINFALL IS POSSIBLE OVER THE AREA...CONTINUING THE FLASH FLOOD 
THREAT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
KENSINGTON AND LEECHBURG

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF WILL CAUSE FLOODING OF SMALL STREAMS...LOW LYING
SPOTS ON ROADS...AND POOR DRAINAGE AREAS.

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

&&

LAT...LON 4020 7911 4034 7978 4044 7970 4053 7970
      4055 7977 4060 7976 4067 7969 4063 7958
      4056 7956 4054 7946 4049 7946 4045 7939
      4048 7937 4046 7930 4041 7927 4041 7916
      4037 7912 4042 7903 4039 7897

$$
34

983 
WGUS71 KPBZ 101459
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1059 AM EDT WED JUL 10 2013

PAC129-101508-
/O.EXP.KPBZ.FF.W.0020.000000T0000Z-130710T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WESTMORELAND PA-
1059 AM EDT WED JUL 10 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1100 AM EDT FOR
WESTMORELAND COUNTY...

ALTHOUGH THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO 
EXPIRE...ADDITIONAL RAINFALL IS EXPECTED THIS AFTERNOON. A FLASH 
FLOOD WATCH REMAINS IN EFFECT UNTIL 6AM THURSDAY.

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.

LAT...LON 4020 7911 4034 7978 4044 7970 4053 7970
      4055 7977 4060 7976 4067 7969 4063 7958
      4056 7956 4054 7946 4049 7946 4045 7939
      4048 7937 4046 7930 4041 7927 4041 7916
      4037 7912 4042 7903 4039 7897

$$

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, 7:09 AM EDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jul 10, 7:09 AM EDT, 1 hour 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
709 AM EDT WED JUL 10 2013

.SYNOPSIS...
PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE UNTIL A COLD
FRONT CROSSES THE REGION WEDNESDAY NIGHT. BUILDING HIGH PRESSURE
WILL FOLLOW THE FRONT.

&&

.NEAR TERM /THROUGH TONIGHT/...
MADE A FEW MINOR TWEAKS TO MRNG POPS. AN AREA OF SHWRS AND SCT
TSTMS CONTS TO MOVE E ACRS THE AREA THIS MRNG PRODUCING VRY HVY
RAINFALL. EXP WE WL SEE A LULL IN THE ACTIVITY FOR A WHILE LATER
THIS MRNG AS BEST DYNAMICS SHIFT E. THIS AFTN A CDFNT WL BEGIN TO
APRCH FM THE W...WITH ADDNL TSTMS DVLPG. EXP CAPES 2000-3000 J/KG
OVR THE RGN. SHEAR VALUES NOT IMPRESSIVE BUT SOME DRYING IN THE
MID LVLS SHOULD BRING A THREAT FOR DAMAGING WIND GUSTS. LARGE HAIL
WL ALSO BE PSBL. EXP THIS TO CONT INTO THE EVE BEFORE INSTBY GRDLY
DCRS AFT SUNSET.

PWATS WL REMAIN HIGH SO THE THREAT FOR FLASH FLOODING CONTS. NO
CHGS TO FLASH FLOOD WATCH ATTM...PLACEMENT STILL LOOKS GOOD. MAY
BE SOME LOCALIZED FLOODING FURTHER NORTH BUT THREAT NOT SUFFICIENT
ENOUGH TO INCLUDE IN THE WATCH ATTM. PCPN SHOULD DMNSH/MOVE OUT
OF THE RGN LTR TNGT AS THE CDFNT PUSHES THROUGH.

&&

.SHORT TERM /THURSDAY 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 /11Z WEDNESDAY THROUGH SUNDAY/...
SHWRS AND SCT TSTMS CONT TO MOVE E ACRS THE RGN ERLY THIS MRNG.
EXP MVFR TO OCNL IFR WITH THE PCPN. PCPN SHOULD DCRS LTR THIS
MRNG WITH CONDS GRDLY RETURNING TO VFR THIS AFTN. A CDFNT WL MOVE
EWD THIS AFTN AND EVE WITH TSTMS EXPD. TIMING OF TSTMS STILL IN QN
SO INCLUDED VCTS IN THE TAFS ATTM. EXP PCPN TO TAPER OFF TNGT AS
WNDS SHIFT TO THE NW AFT FROPA. AREAS MVFR/PTCHY IFR BR BEHIND THE
FNT EXPD THU MRNG.

OUTLOOK.../THURSDAY THROUGH SUNDAY/...
GENL VFR CONDS EXPD WITH HIGH PRES IN CTRL.

&&

.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 PAZ020-021-029-031-
     073>076.
WV...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR WVZ001>004-012-
     021>023-041.

&&

07

Hazardous weather outlook, Jul 10, 4:06 AM EDT, 4 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
406 AM EDT WED JUL 10 2013

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031-073>076-
WVZ001>004-012-021>023-041-110815-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-BEAVER-
ALLEGHENY-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-
FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-TUCKER-
406 AM EDT WED JUL 10 2013

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

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

.DAY ONE...TODAY 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.

IN ADDITION...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH
DAMAGING WIND AND LARGE HAIL THIS AFTERNOON AND EVENING.

.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.

PAZ007>009-013>016-022-023-110815-
MERCER-VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-ARMSTRONG-
INDIANA-
406 AM EDT WED JUL 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST PENNSYLVANIA AND
WEST CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS
AND LARGE HAIL THIS AFTERNOON AND EVENING. IN ADDITION...HEAVY
RAIN MAY CAUSE LOCALIZED FLOODING MAINLY THIS AFTERNOON AND
EVENING.

.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.

07

In the hours before

Local storm report, Jul 10, 8:50 AM EDT, 15 minutes before

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

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

0848 AM     FLASH FLOOD      MCMURRAY                40.28N  80.09W
07/10/2013                   WASHINGTON         PA   TRAINED SPOTTER

            VALLEY BROOK CREEK IS FLOODING VALLEY BROOK ROAD

&&

EVENT NUMBER PBZ1302405

DARNLEY

Local storm report, Jul 10, 8:52 AM EDT, 13 minutes before

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

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

0852 AM     FLASH FLOOD      CLAIRTON                40.30N  79.89W
07/10/2013                   ALLEGHENY          PA   EMERGENCY MNGR

            STATE ST AND ST CLAIR AVE ROADWAY FLOODING

&&

EVENT NUMBER PBZ1302406

Special weather statement, Jul 10, 8:52 AM EDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
852 AM EDT WED JUL 10 2013

OHZ041-PAZ020-WVZ001-101315-
BEAVER PA-COLUMBIANA OH-HANCOCK WV-
852 AM EDT WED JUL 10 2013

...STRONG THUNDERSTORMS WILL AFFECT BEAVER...EAST CENTRAL COLUMBIANA
AND EXTREME NORTHEASTERN HANCOCK COUNTIES...

AT 849 AM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 4 MILES
NORTHWEST OF BLACKHAWK TO 4 MILES NORTHEAST OF BEAVER CREEK STATE
PARK TO 3 MILES NORTH OF BEAVER CREEK STATE PARK...MOVING SOUTHEAST
AT 40 MPH.

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

  LOCATIONS IMPACTED INCLUDE...
  EAST PALESTINE...     BEAVER CREEK STATE PARK...
  DARLINGTON...         BLACKHAWK...          BEAVER FALLS...
  BEAVER...             SHIPPINGPORT...

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

LAT...LON 4077 8025 4064 8026 4056 8044 4075 8071
      4083 8067 4084 8058

KRAMAR

Local storm report, Jul 10, 9:00 AM EDT, 5 minutes before

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

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

0900 AM     FLASH FLOOD      HARSHAVILLE             40.55N  80.42W
07/10/2013                   BEAVER             PA   EMERGENCY MNGR

            RT 30 FLOODED AND CLOSED IN HANOVER AND INDEPENDENCE
            TOWNSHIPS

&&

EVENT NUMBER PBZ1302407

Local storm report, Jul 10, 9:01 AM EDT, 4 minutes before

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

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

0859 AM     FLOOD            1 S JEANNETTE           40.31N  79.61W
07/10/2013                   WESTMORELAND       PA   TRAINED SPOTTER

            MILLERDALE RD HAS 2 INCHES OF WATER ON ROADWAY

&&

EVENT NUMBER PBZ1302408

DARNLEY

Local storm report, Jul 10, 9:04 AM EDT, 1 minute before

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

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

0904 AM     FLASH FLOOD      TARENTUM                40.61N  79.76W
07/10/2013                   ALLEGHENY          PA   EMERGENCY MNGR

            ROADWAY FLOODED MILLERSTOWN RD

&&

EVENT NUMBER PBZ1302409

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	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, 3:29 PM EDT	Flash Flood Warning	PBZ	Mercer	4 hr
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.