Alert archive / Pennsylvania / Tornado Warnings in 2008

Tornado Warning 12, NWS Cleveland, OH

June 21, 2008Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Jun 21, 2008, 7:52 PM EDT for Crawford County, Pennsylvania. It was in force for 23 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
Jun 21, 2008, 7:52 PM EDT (23:52 UTC)
Expired
Jun 21, 2008, 8:15 PM EDT
In force
23 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 118 km from the middle of the area, began a volume at 23:52 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 21, 4:36 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.9 hours before the alert went out and 130 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 2008-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 333 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 2008-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.193958Sfc1 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
333 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
1193 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KCLE 212352
TORCLE
PAC039-220015-
/O.NEW.KCLE.TO.W.0012.080621T2352Z-080622T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
752 PM EDT SAT JUN 21 2008

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 815 PM EDT

* AT 746 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 29
  MILES WEST OF TITUSVILLE...OR ABOUT 11 MILES SOUTH OF MEADVILLE...
  MOVING NORTHEAST AT 22 MPH.


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 ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4161 7963 4162 7982 4152 7998 4148 8001
      4148 8012 4147 8013 4148 8034 4155 8033
      4169 7989 4170 7961 4162 7961
TIME...MOT...LOC 2352Z 241DEG 19KT 4150 8017

$$

KOSARIK
1 follow-up statement
000 
WWUS51 KCLE 220021
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
816 PM EDT SAT JUN 21 2008

PAC039-220026-
/O.EXP.KCLE.TO.W.0012.000000T0000Z-080622T0015Z/
CRAWFORD PA-
816 PM EDT SAT JUN 21 2008

...THE TORNADO WARNING FOR SOUTHEASTERN CRAWFORD COUNTY IN NORTHWEST
PENNSYLVANIA EXPIRED AT 815 PM EDT...

STRONG THUNDERSTORMS WILL CONTINUE THIS EVENING WITH GUSTY WINDS AND 
SMALL HAIL. HEAVY RAIN WILL CONTINUE WHICH COULD CAUSE PONDING OF 
WATER ON ROADWAYS AND IN POOR DRAINAGE AREAS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4161 7963 4162 7982 4152 7998 4148 8001
      4148 8012 4147 8013 4148 8034 4155 8033
      4169 7989 4170 7961 4162 7961
TIME...MOT...LOC 2352Z 241DEG 19KT 4150 8017

$$

MITCHELL

Nearby

Tornado Warnings in Pennsylvania, 2008Every tornado warning in 2008Tornadoes in 2008

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.