Alert archive / Pennsylvania / Tornado Warnings in 2012

Tornado Warning 7, NWS Pittsburgh, PA

July 26, 20124 counties in Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jul 26, 2012, 2:23 PM EDT for 4 counties in Pennsylvania. It was in force for 37 min. 3 reports 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 26, 2012, 2:23 PM EDT (18:23 UTC)
Expired: Jul 26, 2012, 3:00 PM EDT
In force: 37 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

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

The radar

The Pittsburgh radar (KPBZ), 114 km from the middle of the area, began a volume at 18:26 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 26, 2:30 PM EDT	TSTM WND DMG	Franklin, PA	WIDESPREAD TREES DOWN THROUGHOUT THE COUNTY.
Jul 26, 3:05 PM EDT	TSTM WND DMG	2 N Sigel, PA	MULTIPLE LARGE TREES BLOWN DOWN IN BARNETT TWP... NEAR SR 899 AND SR 36 CROSSING.
Jul 26, 3:05 PM EDT	TSTM WND DMG	2 S Redclyffe, PA	NUMEROUS TREES BLOWN DOWN... PARTIALLY BLOCKING SR 899.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 26, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 6.4 hours before the alert went out and 119 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: 2136 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 13.9

Open this sounding in Storm Lab

The text

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

026 
WFUS51 KPBZ 261823
TORPBZ
PAC031-053-065-121-261915-
/O.NEW.KPBZ.TO.W.0007.120726T1823Z-120726T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
223 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CLARION COUNTY IN WEST CENTRAL PENNSYLVANIA...
  SOUTHERN FOREST COUNTY IN NORTHWEST PENNSYLVANIA...
  NORTHERN JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA...
  SOUTHERN VENANGO COUNTY IN NORTHWEST PENNSYLVANIA...

* UNTIL 315 PM EDT

* AT 221 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  KENNERDELL...MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO  
  KENNERDELL...         FRANKLIN...           CLINTONVILLE...
  EMLENTON...           SENECA...             VAN...
  KNOX...               FRYBURG...            CLARION...
  LIMESTONE...          COOK FOREST STATE PARK...
  SUMMERVILLE...

THIS WILL IMPACT THE FOLLOWING HIGHWAY...

I-80 BETWEEN MILE MARKERS 32 AND 90.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING  
DESTRUCTIVE STRAIGHT LINE WINDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER IN AN INTERIOR HALLWAY OR ROOM ON THE LOWEST
FLOOR. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY
AWAY FROM WINDOWS.

IF IN A MOBILE HOME OR VEHICLE...EVACUATE IT AND GET INSIDE A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE. 1-877-633-6772.

&&

LAT...LON 4108 7890 4115 7968 4117 7970 4117 7992
      4140 7990 4145 7906 4142 7906 4141 7909
      4136 7909 4135 7905 4138 7897 4143 7896
      4145 7898 4146 7895 4138 7897 4134 7888
TIME...MOT...LOC 1823Z 268DEG 40KT 4131 7978

$$

FRIES

2 follow-up statements

937 
WWUS51 KPBZ 261854
SVSPBZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
254 PM EDT THU JUL 26 2012

PAC121-261904-
/O.CAN.KPBZ.TO.W.0007.000000T0000Z-120726T1915Z/
VENANGO PA-
254 PM EDT THU JUL 26 2012

...THE TORNADO WARNING FOR VENANGO COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.

THIS WILL IMPACT THE FOLLOWING HIGHWAY...

I-80 BETWEEN MILE MARKERS 32 AND 46.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE. 1-877-633-6772.

LAT...LON 4122 7889 4127 7926 4144 7921 4145 7906
      4142 7906 4141 7909 4136 7909 4135 7905
      4138 7897 4143 7896 4145 7898 4146 7895
      4138 7897 4134 7888
TIME...MOT...LOC 1854Z 268DEG 40KT 4132 7932

$$

PAC031-053-065-261915-
/O.CON.KPBZ.TO.W.0007.000000T0000Z-120726T1915Z/
CLARION PA-FOREST PA-JEFFERSON PA-
254 PM EDT THU JUL 26 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR FOREST
COUNTY IN NORTHWEST PENNSYLVANIA...AND JEFFERSON AND CLARION COUNTIES
IN WEST CENTRAL PENNSYLVANIA...

AT 252 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 7 MILES WEST OF COOK
FOREST STATE PARK...MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO  
  COOK FOREST STATE PARK...                   REDCLYFFE...
  CLEAR CREEK STATE PARK...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING ONE 
INCH SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER IN AN INTERIOR HALLWAY OR ROOM ON THE LOWEST
FLOOR. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY
AWAY FROM WINDOWS.

IF IN A MOBILE HOME OR VEHICLE...EVACUATE IT AND GET INSIDE A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE. 1-877-633-6772.

LAT...LON 4122 7889 4127 7926 4144 7921 4145 7906
      4142 7906 4141 7909 4136 7909 4135 7905
      4138 7897 4143 7896 4145 7898 4146 7895
      4138 7897 4134 7888
TIME...MOT...LOC 1854Z 268DEG 40KT 4132 7932

$$

FRIES

363 
WWUS51 KPBZ 261900
SVSPBZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
300 PM EDT THU JUL 26 2012

PAC031-053-065-261909-
/O.CAN.KPBZ.TO.W.0007.000000T0000Z-120726T1915Z/
CLARION PA-FOREST PA-JEFFERSON PA-
300 PM EDT THU JUL 26 2012

...THE TORNADO WARNING FOR FOREST COUNTY IN NORTHWEST PENNSYLVANIA...
AND JEFFERSON AND CLARION COUNTIES IN WEST CENTRAL PENNSYLVANIA IS
CANCELLED...

THE ROTATION ON DOPPLER RADAR THAT PROMTED THE TORNADO WARNING HAS 
MOVED OUT OF THE AREA. A SEVERE THUNDERSTORM WARNING REMAINS IN 
EFFECT FOR THE AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE. 1-877-633-6772.

LAT...LON 4122 7889 4127 7926 4144 7921 4145 7906
      4142 7906 4141 7909 4136 7909 4135 7905
      4138 7897 4143 7896 4145 7898 4146 7895
      4138 7897 4134 7888
TIME...MOT...LOC 1859Z 268DEG 40KT 4132 7925

$$

FRIES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 2:38 AM EDT	Special Weather Statement	PBZ	Beaver	37 min
Jul 26, 3:31 AM EDT	Special Weather Statement	PBZ	Allegheny, Washington	59 min
Jul 26, 4:05 AM EDT	Special Weather Statement	PBZ	Armstrong, Butler, Indiana	55 min
Jul 26, 4:12 AM EDT	Special Weather Statement	PBZ	Fayette, Greene	63 min
Jul 26, 5:22 AM EDT	Special Weather Statement	PBZ	Westmoreland	23 min
Jul 26, 1:04 PM EDT	Special Weather Statement	PBZ	Mercer	56 min
Jul 26, 1:22 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	53 min
Jul 26, 1:35 PM EDT	Tornado Warning	PBZ	Mercer, Venango	40 min
Jul 26, 2:04 PM EDT	Special Weather Statement	PBZ	Beaver, Butler, Clarion, Forest, Lawrence	56 min
Jul 26, 2:09 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Clarion, Forest, Lawrence, Mercer, Venango	81 min
Jul 26, 2:35 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	40 min
Jul 26, 2:56 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	34 min
Jul 26, 3:06 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Beaver, Butler, Clarion, Indiana, Jefferson and 1 more	69 min
Jul 26, 3:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Lawrence	66 min
Jul 26, 3:16 PM EDT	Flash Flood Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	6 hr
Jul 26, 3:30 PM EDT	Tornado Warning	PBZ	Jefferson	45 min
Jul 26, 3:37 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	38 min
Jul 26, 4:02 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Indiana, Westmoreland	58 min
Jul 26, 4:05 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	40 min
Jul 26, 4:16 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Indiana, Jefferson, Westmoreland	59 min
Jul 26, 4:19 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	41 min
Jul 26, 4:54 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Indiana, Westmoreland	66 min
Jul 26, 4:56 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	64 min
Jul 26, 5:01 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	44 min
Jul 26, 5:09 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	51 min
Jul 26, 5:37 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	53 min
Jul 26, 5:50 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	55 min
Jul 26, 5:53 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	47 min
Jul 26, 6:01 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	74 min
Jul 26, 6:15 PM EDT	Special Weather Statement	PBZ	Clarion, Jefferson	45 min
Jul 26, 6:17 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington, Westmoreland	58 min
Jul 26, 6:24 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	33 min
Jul 26, 6:34 PM EDT	Areal Flood Warning	PBZ	Indiana, Westmoreland	3 hr
Jul 26, 6:41 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	49 min
Jul 26, 6:49 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	56 min
Jul 26, 6:56 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Westmoreland	49 min
Jul 26, 7:05 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	55 min

Nearby

Tornado Warnings in Pennsylvania, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.