Alert archive / Pennsylvania / Tornado Warnings in 2012

Tornado Warning 8, NWS Pittsburgh, PA

July 26, 2012Jefferson County, Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jul 26, 2012, 3:30 PM EDT for Jefferson County, Pennsylvania. It was in force for 45 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, 3:30 PM EDT (19:30 UTC)
Expired: Jul 26, 2012, 4:15 PM EDT
In force: 45 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

County Jefferson County, PA

What was reported inside it

Time	Report	Where	Remark
Jul 26, 3:30 PM EDT	TSTM WND DMG	Summerville, PA	MULTIPLE TREES AND POWER LINES BLOWN DOWN.
Jul 26, 3:40 PM EDT	TSTM WND DMG	Brookville, PA	NUMEROUS TREES AND POWER LINES DOWN.
Jul 26, 4:00 PM EDT	TSTM WND DMG	Punxsutawney, PA	NUMEROUS TREES AND POWER LINES DOWN.

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, 7.5 hours before the alert went out and 123 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.

083 
WFUS51 KPBZ 261930
TORPBZ
PAC065-262015-
/O.NEW.KPBZ.TO.W.0008.120726T1930Z-120726T2015Z/

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

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* TORNADO WARNING FOR...
  JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA...

* UNTIL 415 PM EDT

* AT 327 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR
  BROOKVILLE...MOVING SOUTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO  
  SUMMERVILLE...        BROOKVILLE...         REYNOLDSVILLE...
  PUNXSUTAWNEY...

THIS WILL IMPACT THE FOLLOWING HIGHWAY...

I-80 BETWEEN MILE MARKERS 73 AND 96.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4112 7880 4091 7880 4091 7892 4109 7922
      4119 7921 4127 7911 4118 7877
TIME...MOT...LOC 1930Z 294DEG 22KT 4115 7904

$$

FRIES

1 follow-up statement

319 
WWUS51 KPBZ 262006
SVSPBZ

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

PAC065-262016-
/O.EXP.KPBZ.TO.W.0008.000000T0000Z-120726T2015Z/
JEFFERSON PA-
406 PM EDT THU JUL 26 2012

...THE TORNADO WARNING FOR JEFFERSON COUNTY IN WEST CENTRAL
PENNSYLVANIA EXPIRES AT 415 PM EDT...

THE DOPPLER RADAR REFLECTION OF THE POSSIBLE TORNADO IN JEFFERSON 
COUNTY HAS MOVE EAST AND OUT OF THE COUNTY.

THIS WILL IMPACT THE FOLLOWING HIGHWAY...

I-80 BETWEEN MILE MARKERS 74 AND 96.

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 4112 7880 4091 7880 4091 7892 4109 7922
      4119 7921 4127 7911 4118 7877
TIME...MOT...LOC 2006Z 294DEG 22KT 4106 7877

$$

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, 2:23 PM EDT	Tornado Warning	PBZ	Clarion, Forest, Jefferson, Venango	37 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, 3:37 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.