Alert archive / Pennsylvania / Tornado Warnings in 2012

Tornado Warning 9, NWS Cleveland, OH

July 28, 2012Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Jul 28, 2012, 12:45 PM EDT for Crawford County, Pennsylvania. It was in force for 24 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
Jul 28, 2012, 12:45 PM EDT (16:45 UTC)
Expired
Jul 28, 2012, 1:09 PM EDT
In force
24 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 116 km from the middle of the area, began a volume at 16:48 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.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 4.8 hours before the alert went out and 129 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2012-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 561 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2012-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
561 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
580 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

156 
WFUS51 KCLE 281645
TORCLE
PAC039-281730-
/O.NEW.KCLE.TO.W.0009.120728T1645Z-120728T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1245 PM EDT SAT JUL 28 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA...

* UNTIL 130 PM EDT

* AT 1242 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR MEADVILLE...AND MOVING SOUTHEAST AT 10 MPH.

  TORNADO ON THE GROUND SOUTH OF MEADVILLE. RAIN WRAPPED TORNADO.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF SOUTHERN CRAWFORD COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. IF NO
BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR CLOSET.

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE. 1-877-633-6772. WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4158 7985 4148 8001 4148 8011 4147 8013
      4148 8020 4167 8030 4175 8008 4160 7983
TIME...MOT...LOC 1645Z 335DEG 9KT 4163 8014

$$

KIELTYKA
1 follow-up statement
649 
WWUS51 KCLE 281709
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
109 PM EDT SAT JUL 28 2012

PAC039-281720-
/O.CAN.KCLE.TO.W.0009.000000T0000Z-120728T1730Z/
CRAWFORD PA-
109 PM EDT SAT JUL 28 2012

...THE TORNADO WARNING FOR CENTRAL CRAWFORD COUNTY IN NORTHWEST
PENNSYLVANIA IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH
THIS THUNDERSTORM.

LAT...LON 4158 7985 4148 8001 4148 8011 4147 8013
      4148 8020 4167 8030 4175 8008 4160 7983
TIME...MOT...LOC 1710Z 335DEG 9KT 4157 8010

$$

KIELTYKA

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 12:32 PM EDTAreal Flood AdvisoryCLECrawford2 hr
Jul 28, 6:22 PM EDTAreal Flood AdvisoryCLECrawford2 hr

Nearby

Tornado Warnings in Pennsylvania, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.