Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 73, NWS Cleveland, OH

June 29, 2012Ashtabula County, Ohio; Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jun 29, 2012, 12:05 AM EDT for Ashtabula County, Ohio; Crawford County, Erie County, Pennsylvania. It was in force for 55 min. 1 report 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 29, 2012, 12:05 AM EDT (04:05 UTC)
Expired
Jun 29, 2012, 1:00 AM EDT
In force
55 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Ashtabula County, OH, Crawford County, PA, Erie County, PA

The radar

The Pittsburgh radar (KPBZ), 126 km from the middle of the area, began a volume at 04:07 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 29, 12:50 AM EDTTSTM WND DMGTitusville, PAA FEW TREES DOWN ACROSS THE AREA.

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

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 4.1 hours before the alert went out and 138 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 00:00Z on 2012-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 624 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2012-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
624 J/kg
Mixed-layer CIN
-472 J/kg
Mixed-layer LCL
2198 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

147 
WUUS51 KCLE 290405
SVRCLE
OHC007-PAC039-049-290500-
/O.NEW.KCLE.SV.W.0073.120629T0405Z-120629T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1205 AM EDT FRI JUN 29 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ASHTABULA COUNTY IN NORTHEAST OHIO
  CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA
  SOUTHWESTERN ERIE COUNTY IN NORTHWEST PENNSYLVANIA

* UNTIL 100 AM EDT

* AT 1203 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
  SOUTH OF CONNEAUT...AND MOVING SOUTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MEADVILLE...
  ALBION...
  LINESVILLE...
  EDINBORO...
  CAMBRIDGE SPRINGS...
  WATERFORD...
  UNION CITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

&&

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

LAT...LON 4161 7962 4161 7982 4159 7984 4148 8001
      4148 8011 4147 8013 4148 8031 4174 8077
      4193 8061 4203 8007 4180 7962 4162 7961
TIME...MOT...LOC 0405Z 293DEG 39KT 4181 8053

$$

KIELTYKA
2 follow-up statements
443 
WWUS51 KCLE 290436
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1236 AM EDT FRI JUN 29 2012

OHC007-PAC049-290445-
/O.CAN.KCLE.SV.W.0073.000000T0000Z-120629T0500Z/
ASHTABULA OH-ERIE PA-
1236 AM EDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ASHTABULA COUNTY
IN NORTHEAST OHIO...AND SOUTHWESTERN ERIE COUNTY IN NORTHWEST
PENNSYLVANIA IS CANCELLED...

LAT...LON 4162 7961 4161 7962 4161 7982 4159 7984
      4148 8001 4148 8011 4147 8013 4148 8031
      4160 8052 4185 8052 4185 7972 4180 7962
TIME...MOT...LOC 0435Z 293DEG 39KT 4171 7960 4160 8034

$$

PAC039-290500-
/O.CON.KCLE.SV.W.0073.000000T0000Z-120629T0500Z/
CRAWFORD PA-
1236 AM EDT FRI JUN 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM EDT
FOR CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA...

AT 1230 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 6 MILES SOUTH OF SPARTANSBURG TO
LINESVILLE...MOVING SOUTHEAST AT 45 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...TITUSVILLE.

LAT...LON 4162 7961 4161 7962 4161 7982 4159 7984
      4148 8001 4148 8011 4147 8013 4148 8031
      4160 8052 4185 8052 4185 7972 4180 7962
TIME...MOT...LOC 0435Z 293DEG 39KT 4171 7960 4160 8034

$$

JMAYERS
733 
WWUS51 KCLE 290502
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
102 AM EDT FRI JUN 29 2012

PAC039-290511-
/O.EXP.KCLE.SV.W.0073.000000T0000Z-120629T0500Z/
CRAWFORD PA-
102 AM EDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR CRAWFORD COUNTY IN NORTHWEST
PENNSYLVANIA EXPIRED AT 100 AM EDT...

THE SEVERE STORMS THAT MOVED ACROSS CRAWFORD COUNTY HAVE MOVED TO 
THE SOUTHEAST OUT OF THE COUNTY AND WEAKENED. NO NEW STORMS ARE 
EXPECTED. SEVERE WEATHER IS NO LONGER A THREAT IN CRAWFORD COUNTY 
OVERNIGHT. 

LAT...LON 4162 7961 4161 7962 4161 7982 4159 7984
      4148 8001 4148 8011 4147 8013 4148 8031
      4160 8052 4185 8052 4185 7972 4180 7962
TIME...MOT...LOC 0436Z 293DEG 39KT 4170 7959 4160 8033

$$

KOSARIK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 11:19 PM EDTSevere Thunderstorm WarningCLEAshtabula, Trumbull56 min
Jun 29, 3:59 AM EDTHeat AdvisoryCLEAshland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 19 more11 hr
Jun 29, 3:49 PM EDTSevere Thunderstorm WarningCLEHancock, Wood56 min
Jun 29, 4:19 PM EDTSevere Thunderstorm WarningCLEMarion, Wyandot56 min
Jun 29, 4:33 PM EDTSevere Thunderstorm WarningCLESeneca43 min
Jun 29, 4:40 PM EDTSevere Thunderstorm WarningCLEHancock16 min
Jun 29, 4:42 PM EDTSevere Thunderstorm WarningCLECrawford, Morrow50 min
Jun 29, 4:55 PM EDTSevere Thunderstorm WarningCLEKnox, Richland61 min
Jun 29, 5:08 PM EDTSevere Thunderstorm WarningCLEAshland55 min
Jun 29, 5:20 PM EDTSevere Thunderstorm WarningCLEHolmes56 min
Jun 28, 11:46 PM EDTSevere Thunderstorm WarningCLECrawford44 min
Jun 29, 12:34 AM EDTSevere Thunderstorm WarningCLECrawford, Erie26 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2012Severe Thunderstorm Warnings in Ohio, 2012Every severe thunderstorm warning 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.