Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 77, NWS Pittsburgh, PA

May 25, 2011Clarion County, Forest County, Jefferson County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 25, 2011, 10:10 PM EDT for Clarion County, Forest County, Jefferson County, Pennsylvania. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 25, 2011, 10:10 PM EDT (02:10 UTC)
Expired: May 25, 2011, 10:45 PM EDT
In force: 35 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

Counties Clarion County, PA, Forest County, PA, Jefferson County, PA

The radar

The State College radar (KCCX), 104 km from the middle of the area, began a volume at 02:12 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 00:00Z, 2.2 hours before the alert went out and 144 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: 702 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1455 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

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

352 
WUUS51 KPBZ 260210
SVRPBZ
PAC031-053-065-260245-
/O.NEW.KPBZ.SV.W.0077.110526T0210Z-110526T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1010 PM EDT WED MAY 25 2011

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA...
  FOREST COUNTY IN NORTHWEST PENNSYLVANIA...
  NORTHEASTERN CLARION COUNTY IN WEST CENTRAL PENNSYLVANIA...

* UNTIL 1045 PM EDT

* AT 1008 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR KISER CORNERS...MOVING EAST
  AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO  
  WEST HICKORY...       KELLETTVILLE...       BALLTOWN...
  REDCLYFFE...          MARIENVILLE...       
  CLEAR CREEK STATE PARK...                   LYNCH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WIND.  SEEK SHELTER 
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE. 1-877-633-6772...WHEN YOU CAN
DO SO SAFELY.

&&

LAT...LON 4162 7895 4144 7895 4143 7898 4144 7906
      4142 7907 4141 7908 4136 7909 4136 7903
      4138 7898 4136 7892 4135 7891 4126 7892
      4141 7948 4162 7939
TIME...MOT...LOC 0209Z 273DEG 40KT 4152 7938

$$


15

2 follow-up statements

524 
WWUS51 KPBZ 260228
SVSPBZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1028 PM EDT WED MAY 25 2011

PAC031-053-065-260245-
/O.CON.KPBZ.SV.W.0077.000000T0000Z-110526T0245Z/
JEFFERSON PA-FOREST PA-CLARION PA-
1028 PM EDT WED MAY 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR FOREST COUNTY IN NORTHWEST PENNSYLVANIA...AND CLARION AND
JEFFERSON COUNTIES IN WEST CENTRAL PENNSYLVANIA...

AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS 
IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM HASTINGS TO CROWN...MOVING EAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO  
  WEST HICKORY...       KELLETTVILLE...       BALLTOWN...
  LYNCH...              MARIENVILLE...        REDCLYFFE...
  CLEAR CREEK STATE PARK...

IN ADDITION TO DAMAGING WINDS...CLOUD TO GROUND LIGHTNING IS 
OCCURRING WITH THIS STORM. LIGHTNING IS ONE OF NATURES NUMBER ONE 
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH 
TO BE STRUCK BY LIGHTNING.

PLEASE REPORT DOWNED TREES AND WIND DAMAGE TO THE NATIONAL WEATHER 
SERVICE BY CALLING TOLL FREE. 1-877-633-6772.

LAT...LON 4162 7895 4144 7895 4143 7898 4144 7906
      4142 7907 4141 7908 4136 7909 4136 7903
      4138 7898 4136 7892 4135 7891 4126 7892
      4141 7948 4162 7939
TIME...MOT...LOC 0227Z 282DEG 20KT 4159 7908 4136 7924

$$


15

143 
WWUS51 KPBZ 260241
SVSPBZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1041 PM EDT WED MAY 25 2011

PAC031-053-065-260251-
/O.EXP.KPBZ.SV.W.0077.000000T0000Z-110526T0245Z/
JEFFERSON PA-FOREST PA-CLARION PA-
1041 PM EDT WED MAY 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR FOREST COUNTY IN NORTHWEST
PENNSYLVANIA...AND CLARION AND JEFFERSON COUNTIES IN WEST CENTRAL 
PENNSYLVANIA WILL BE ALLOWED TO EXPIRES AT 1045 PM EDT...

THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED.


LAT...LON 4162 7895 4144 7895 4143 7898 4144 7906
      4142 7907 4141 7908 4136 7909 4136 7903
      4138 7898 4136 7892 4135 7891 4126 7892
      4141 7948 4162 7939
TIME...MOT...LOC 0241Z 282DEG 20KT 4157 7898 4134 7914

$$


15

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 25, 7:04 PM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, May 25, 7:04 PM EDT, 3 hours 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
704 PM EDT WED MAY 25 2011

.SYNOPSIS...
WARM AND HUMID CONDITIONS ALONG WITH THUNDERSTORM CHANCES WILL
CONTINUE FOR THE REST OF THE WEEK AS A SERIES OF DISTURBANCES
CROSS THE REGION.

&&

.NEAR TERM /THROUGH THURSDAY/...

OUTFLOW FROM THUNDERSTORM CLUSTER OVER WESTERN AND CENTRAL OHIO IS
EXPECTED TO PUSH TOWARD THE AREA AS THE EVE PROGRESSES. FORCING WL
LIKELY BE SUFFICIENT TO INITIATE THUNDERSTORMS DESPITE WARM
ADVECTION INTO THE MID LEVELS.

EVE UPDATE FEATURES TWEAKED PRECIP PROBABILITIES AND MENTION OF
DAMAGING WINDS OVER THE WESTERN ZONES OF THE CWA AS THAT OUTFLOW
PLOUGHS EASTWARD.

THE FORECAST AREA WILL REMAIN IN THE WARM SECTOR FOR THROUGH
THURSDAY. THUNDERSTORMS  WILL BECOME MORE LIKELY IN EASTERN OHIO
BY THURSDAY AFTERNOON AS WARMER TEMPS AND HIGHER HUMIDITY INCREASE
INSTABILITY AND AS COLD FRONT SLIDES FURTHER EASTWARD FROM
INDIANA. THE FORECAST AREA REMAINS IN A SLIGHT RISK OF SEVERE
STORMS FOR TONIGHT THROUGH THURSDAY.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY/...
AS THE COLD FRONT DRAWS CLOSER THURSDAY NIGHT INTO FRIDAY
SHOWERS AND THUNDERSTORMS WILL BE MORE LIKELY WITH INCREASED
COVERAGE OF SHOWERS. THE FORECAST AREA REMAINS IN THE SLIGHT
RISK OF SEVERE FOR THURSDAY NIGHT. THE RISK OF SHOWERS WILL
GREATLY DIMINISH AS THE COLD FRONT BECOMES MORE DIFFUSE BY
LATE FRIDAY AND IS OVERWHELMED BY THE RIDGE OF THIS PRESSURE
OFF THE EAST COAST. TEMPERATURES WILL REMAIN ABOVE NORMAL.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
MEDIUM RANGE MODELS ARE SHOWING AGREEMENT FOR AN EXTENDED DRY
PERIOD BEGINNING SATURDAY AND CONTINUING THROUGH TUESDAY.
INCREASING MOISTURE WILL BRING A SLIGHT CHANCE OF SHOWERS
BY WEDNESDAY. MUCH ABOVE NORMAL TEMPS ARE EXPECTED FOR THE
FORECAST PERIOD.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...

EXPECT GENERALLY VFR CONDITIONS TO PREVAIL THROUGH THE TAF
PERIOD FOR MOST PORTS; HOWEVER, THUNDERSTORMS, RESTRICTIONS, AND
GUSTY WIND ARE POSSIBLE MAINLY ACROSS NORTHERN AND WESTERN TERMINALS
TONIGHT AS OUTFLOW FROM OHIO TSTMS PUSHES TOWARD THE UPPER OHIO
VALLEY.

MORE THUNDERSTORMS ARE EXPECTED THURSDAY AND THURSDAY NIGHT AS A
SURFACE LOW AND COLD FRONT APPROACH FROM THE WEST. OCCASIONAL MVFR
AND ISOLATED IFR RESTRICTIONS CAN BE EXPECTED IN STORMS ALONG WITH
THE POTENTIAL FOR HAIL AND GUSTY SURFACE WINDS.

NUMEROUS SHOWERS AND AND SCATTERED THUNDERSTORMS WILL CONTINUE
FRIDAY AND FRIDAY NIGHT AS THE SURFACE LOW PUSHES ACROSS THE GREAT
LAKES AND THE COLD FRONT SLOWLY CROSSES THE UPPER OHIO VALLEY.

GENERALLY VFR CONDITIONS ARE EXPECTED THIS WEEKEND AS AN UPPER RIDGE
BUILDS OVER THE REGION.

&&

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

&&

15

Hazardous weather outlook, May 25, 4:19 AM EDT, 17 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
419 AM EDT WED MAY 25 2011

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029-
031-073-075-WVZ001>004-012-021-022-260830-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-FOREST-
LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-
INDIANA-WASHINGTON-GREENE-WESTMORELAND-FAYETTE-HANCOCK-BROOKE-OHIO-
MARSHALL-WETZEL-MARION-MONONGALIA-
419 AM EDT WED MAY 25 2011

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

.DAY ONE...TODAY AND TONIGHT.

SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING.
THE MAIN THREAT WILL BE LARGE HAIL AND DAMAGING WINDS.

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

SLIGHT RISK FOR SEVERE THUNDERSTORMS THURSDAY AFTERNOON AND
THURSDAY NIGHT. THE MAIN THREAT WILL BE LARGE HAIL AND DAMAGING
WINDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MDZ001-PAZ074-076-WVZ023-041-260830-
GARRETT-WESTMORELAND RIDGES-FAYETTE RIDGES-PRESTON-TUCKER-
419 AM EDT WED MAY 25 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...SOUTHWEST
PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

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

SLIGHT RISK FOR SEVERE THUNDERSTORMS THURSDAY AFTERNOON AND
THURSDAY NIGHT. THE MAIN THREAT WILL BE LARGE HAIL AND DAMAGING
WINDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, May 25, 9:29 PM EDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
929 PM EDT WED MAY 25 2011

OHZ039>041-049-050-058-059-PAZ013-020-021-029-WVZ001-002-260200-
ALLEGHENY PA-BEAVER PA-BELMONT OH-BROOKE WV-CARROLL OH-COLUMBIANA OH-
GUERNSEY OH-HANCOCK WV-HARRISON OH-JEFFERSON OH-LAWRENCE PA-
TUSCARAWAS OH-WASHINGTON PA-
929 PM EDT WED MAY 25 2011

...GUSTY WINDS FROM STRONG THUNDERSTORMS WILL AFFECT
BEAVER...CARROLL...COLUMBIANA...HANCOCK...HARRISON...JEFFERSON...
NORTHEASTERN BROOKE...NORTHEASTERN GUERNSEY...NORTHWESTERN
BELMONT...NORTHWESTERN WASHINGTON...SOUTHWESTERN
LAWRENCE...TUSCARAWAS AND WEST CENTRAL ALLEGHENY COUNTIES...

AT 926 PM EDT...GUSTY WINDS WERE PRECEDING STRONG THUNDERSTORMS THAT
WERE ALONG A LINE FROM 6 MILES EAST OF EAST PALESTINE TO 5 MILES
SOUTH OF NEW PHILADELPHIA...MOVING SOUTH AT 30 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE AHEAD OF THESE STORMS.

PLEASE REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4046 8159 4091 8055 4090 8053 4092 8052
      4099 8037 4053 8018 4000 8140

Special weather statement, May 25, 9:37 PM EDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
937 PM EDT WED MAY 25 2011

OHZ040-041-260200-
CARROLL OH-COLUMBIANA OH-
937 PM EDT WED MAY 25 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL CARROLL AND
NORTHWESTERN COLUMBIANA COUNTIES...

AT 936 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTHWEST
OF GUILFORD LAKE STATE PARK...MOVING EAST AT 35 MPH.

WIND GUSTS TO 50 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS
STORM.

THIS STORM WILL BE NEAR SALEM AROUND 945 PM AND LEETONIA AROUND 955
PM.

PLEASE REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4090 8080 4090 8059 4069 8106 4091 8107
      4090 8091 4093 8089 4093 8082

Local storm report, May 25, 9:40 PM EDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
940 PM EDT WED MAY 25 2011

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

0939 PM     TSTM WND DMG     MERCER                  41.23N  80.24W
05/25/2011                   MERCER             PA   911 CALL CENTER

            NUMEROUS TREES BLOWN DOWN COUNTYWIDE.

&&

EVENT NUMBER PBZ1100761

NWS

Local storm report, May 25, 9:50 PM EDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
950 PM EDT WED MAY 25 2011

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

0949 PM     TSTM WND DMG     POLK                    41.37N  79.93W
05/25/2011                   VENANGO            PA   911 CALL CENTER

            1 LARGE TREE BLOWN DOWN ON RAY MILTON RD

&&

EVENT NUMBER PBZ1100762

NWS

Local storm report, May 25, 9:59 PM EDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
959 PM EDT WED MAY 25 2011

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

0935 PM     TSTM WND DMG     NEW CASTLE              41.00N  80.35W
05/25/2011                   LAWRENCE           PA   PUBLIC

            TREES DOWN

&&

EVENT NUMBER PBZ1100763

XX

Local storm report, May 25, 10:04 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1004 PM EDT WED MAY 25 2011

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

1003 PM     TSTM WND DMG     MOUNT CHESTNUT          40.89N  79.98W
05/25/2011                   BUTLER             PA   911 CALL CENTER

            1 TREE BLOWN DOWN.

&&

EVENT NUMBER PBZ1100764

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 8:24 PM EDT	Special Weather Statement	PBZ	Lawrence, Mercer, Venango	51 min
May 25, 8:42 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	63 min
May 25, 9:19 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	56 min
May 25, 9:29 PM EDT	Special Weather Statement	PBZ	Beaver	31 min
May 25, 9:42 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Lawrence and 2 more	63 min
May 25, 10:39 PM EDT	Special Weather Statement	PBZ	Jefferson	36 min
May 26, 12:25 AM EDT	Severe Thunderstorm Warning	PBZ	Mercer	35 min
May 26, 3:42 PM EDT	Special Weather Statement	PBZ	Beaver	33 min
May 26, 3:51 PM EDT	Special Weather Statement	PBZ	Greene	39 min
May 26, 4:09 PM EDT	Special Weather Statement	PBZ	Greene	36 min
May 26, 4:15 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	45 min
May 26, 4:20 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	40 min
May 26, 4:21 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	39 min
May 26, 4:53 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Westmoreland	52 min
May 26, 4:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Indiana, Westmoreland	50 min
May 26, 4:59 PM EDT	Special Weather Statement	PBZ	Clarion	46 min
May 26, 5:12 PM EDT	Special Weather Statement	PBZ	Forest	48 min
May 26, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	50 min
May 26, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	33 min
May 26, 5:47 PM EDT	Special Weather Statement	PBZ	Forest	28 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011 Every severe thunderstorm warning in 2011

Sources

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