Alert archive / Pennsylvania / Tornado Warnings in 2010

Tornado Warning 18, NWS Cleveland, OH

June 4, 2010Crawford County, Pennsylvania

NWS Cleveland, OH issued this tornado warning at Jun 4, 2010, 6:12 PM EDT for Crawford County, Pennsylvania. It was in force for 48 min. 7 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
Jun 4, 2010, 6:12 PM EDT (22:12 UTC)
Expired
Jun 4, 2010, 7:00 PM EDT
In force
48 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 128 km from the middle of the area, began a volume at 22:14 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

TimeReportWhereRemark
Jun 4, 6:20 PM EDTHAIL 1.257 E Meadville, PAHAIL NEAR GUYS MILLS.
Jun 4, 6:20 PM EDTHAIL 37 Ne Meadville, PAHAIL WAS NEAR BLOOMING VALLEY.
Jun 4, 6:20 PM EDTHAIL 45 E Blooming Valley, PAHAIL WAS NEAR RTE 77 AND RTE 408.
Jun 4, 6:30 PM EDTHAIL 1.25Townville, PA
Jun 4, 6:50 PM EDTHAIL 1.75Townville, PASOME DAMAGE TO CAR WINDSHIELD.
Jun 4, 6:55 PM EDTTSTM WND DMGTitusville, PANUMEROUS TREES DOWN.
Jun 4, 6:55 PM EDTHAIL 0.75Titusville, PA

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.

IssuedProductOfficeLasted
Jun 4, 1:14 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.2 hours before the alert went out and 139 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 2010-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 251 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 2010-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
251 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

101 
WFUS51 KCLE 042212
TORCLE
PAC039-042300-
/O.NEW.KCLE.TO.W.0018.100604T2212Z-100604T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
612 PM EDT FRI JUN 4 2010

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 700 PM EDT

* AT 606 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 EAST AT 35 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  TITUSVILLE BY 650 PM EDT...

THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY ISSUED FOR THE WARNED AREA.

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 4161 7965 4162 7982 4159 7986 4155 7993
      4167 8018 4179 8014 4172 7961 4162 7961
TIME...MOT...LOC 2212Z 286DEG 29KT 4168 8006

$$

LOMBARDY
2 follow-up statements
109 
WWUS51 KCLE 042236
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
636 PM EDT FRI JUN 4 2010

PAC039-042300-
/O.CON.KCLE.TO.W.0018.000000T0000Z-100604T2300Z/
CRAWFORD PA-
636 PM EDT FRI JUN 4 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR EASTERN
CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA...

AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS 
STORM WAS LOCATED 14 MILES EAST OF MEADVILLE...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
TITUSVILLE BY 650 PM EDT...

ONE AND A QUARTER INCH HAIL WAS REPORTED IN GUYS MILLS WITH THIS 
STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. OTHERWISE...SEEK
SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR
ROOM SUCH AS A CLOSET.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FRIDAY
EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4161 7965 4162 7982 4161 7983 4161 7986
      4164 7997 4176 7997 4172 7961 4162 7961
TIME...MOT...LOC 2235Z 282DEG 27KT 4168 7982

$$

WILLARD
256 
WWUS51 KCLE 042304
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
704 PM EDT FRI JUN 4 2010

PAC039-042314-
/O.EXP.KCLE.TO.W.0018.000000T0000Z-100604T2300Z/
CRAWFORD PA-
704 PM EDT FRI JUN 4 2010

...THE TORNADO WARNING FOR EASTERN CRAWFORD COUNTY IN NORTHWEST
PENNSYLVANIA EXPIRED AT 700 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FRIDAY
EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4161 7965 4162 7982 4161 7983 4161 7986
      4164 7997 4176 7997 4172 7961 4162 7961
TIME...MOT...LOC 2236Z 282DEG 27KT 4168 7981

$$

WILLARD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 5:12 PM EDTSevere Thunderstorm WarningCLECrawford48 min
Jun 4, 5:58 PM EDTSevere Thunderstorm WarningCLECrawford62 min

Nearby

Tornado Warnings in Pennsylvania, 2010Every tornado warning in 2010Tornadoes in 2010

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.