Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 173, NWS Cleveland, OH

September 7, 2012Cuyahoga County, Medina County, Summit County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 2012, 2:12 PM EDT for Cuyahoga County, Medina County, Summit County, Ohio. It was in force for 48 min. 2 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
Sep 7, 2012, 2:12 PM EDT (18:12 UTC)
Expired
Sep 7, 2012, 3:00 PM EDT
In force
48 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Cuyahoga County, OH, Medina County, OH, Summit County, OH

The radar

The Cleveland radar (KCLE), 18 km from the middle of the area, began a volume at 18:11 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
Sep 7, 2:30 PM EDTTSTM WND DMGNorthfield, OHONE TREE AND ONE LIMB DOWN IN SAGAMORE HILLS.
Sep 7, 2:46 PM EDTHAIL 0.753 E Brecksville, OH

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 12:00Z, 6.2 hours before the alert went out and 167 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 2012-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1010 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 12:00Z on 2012-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
1010 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1160 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

917 
WUUS51 KCLE 071812
SVRCLE
OHC035-103-153-071900-
/O.NEW.KCLE.SV.W.0173.120907T1812Z-120907T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
212 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUYAHOGA COUNTY IN NORTHEAST OHIO
  MEDINA COUNTY IN NORTHEAST OHIO
  SUMMIT COUNTY IN NORTHEAST OHIO

* UNTIL 300 PM EDT

* AT 206 PM 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 NEAR
  BRUNSWICK...AND MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  AKRON...
  NORTH ROYALTON...
  PARMA...
  BARBERTON...
  MACEDONIA...
  HUDSON...
  TWINSBURG...
  CUYAHOGA FALLS...

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 4156 8139 4145 8139 4144 8138 4142 8139
      4098 8139 4099 8203 4120 8203 4120 8198
      4127 8197 4128 8188 4135 8188 4136 8192
TIME...MOT...LOC 1812Z 261DEG 13KT 4124 8178

$$

LAPLANTE
2 follow-up statements
663 
WWUS51 KCLE 071833
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
233 PM EDT FRI SEP 7 2012

OHC035-103-153-071900-
/O.CON.KCLE.SV.W.0173.000000T0000Z-120907T1900Z/
CUYAHOGA OH-MEDINA OH-SUMMIT OH-
233 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SUMMIT...EASTERN MEDINA AND EASTERN CUYAHOGA COUNTIES...

AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR RICHFIELD...OR 8 MILES SOUTHEAST OF STRONGSVILLE...MOVING EAST
AT 15 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
RICHFIELD...SEVEN HILLS...FAIRLAWN...INDEPENDENCE...BRECKSVILLE...
VALLEY VIEW...PENINSULA...BOSTON HEIGHTS...MACEDONIA AND NORTHFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM EDT FRIDAY
EVENING FOR NORTHWESTERN OHIO.

&&

LAT...LON 4099 8139 4098 8142 4100 8174 4128 8180
      4143 8174 4156 8139
TIME...MOT...LOC 1833Z 261DEG 13KT 4125 8168

$$

SJAMISON
099 
WWUS51 KCLE 071853
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
253 PM EDT FRI SEP 7 2012

OHC035-103-153-071903-
/O.EXP.KCLE.SV.W.0173.000000T0000Z-120907T1900Z/
CUYAHOGA OH-MEDINA OH-SUMMIT OH-
253 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SUMMIT...EASTERN MEDINA AND
EASTERN CUYAHOGA COUNTIES EXPIRES AT 300 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE.

LAT...LON 4099 8139 4098 8142 4100 8174 4128 8180
      4143 8174 4156 8139
TIME...MOT...LOC 1853Z 261DEG 13KT 4126 8158

$$

SJAMISON

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 2:17 PM EDTSevere Thunderstorm WarningCLEHancock, Wood58 min
Sep 7, 2:51 PM EDTSevere Thunderstorm WarningCLECrawford, Huron, Seneca54 min
Sep 7, 3:13 PM EDTSevere Thunderstorm WarningCLECrawford, Marion, Wyandot62 min
Sep 7, 3:18 PM EDTSevere Thunderstorm WarningCLEErie, Huron57 min
Sep 7, 3:28 PM EDTSpecial Marine WarningCLE77 min
Sep 7, 3:44 PM EDTSevere Thunderstorm WarningCLECrawford, Huron, Seneca19 min
Sep 7, 4:26 PM EDTGale WarningCLE23 hr
Sep 7, 4:29 PM EDTSevere Thunderstorm WarningCLESummit46 min
Sep 7, 4:46 PM EDTSevere Thunderstorm WarningCLEMedina29 min
Sep 7, 4:49 PM EDTSevere Thunderstorm WarningCLEPortage56 min
Sep 7, 5:52 PM EDTSevere Thunderstorm WarningCLEMahoning, Portage, Stark, Trumbull53 min
Sep 7, 6:26 PM EDTAreal Flood AdvisoryCLEMahoning, Trumbull81 min

Nearby

Severe 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.