Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 182, NWS Cleveland, OH

September 7, 20124 counties in Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 2012, 5:52 PM EDT for 4 counties in Ohio. It was in force for 53 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
Sep 7, 2012, 5:52 PM EDT (21:52 UTC)
Expired
Sep 7, 2012, 6:45 PM EDT
In force
53 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Mahoning County, OH, Portage County, OH, Stark County, OH, Trumbull County, OH

The radar

The Pittsburgh radar (KPBZ), 75 km from the middle of the area, began a volume at 21:52 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.

What was reported inside it

TimeReportWhereRemark
Sep 7, 5:55 PM EDTHAIL 12 E North Jackson, OH

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
Sep 7, 3:22 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.9 hours before the alert went out and 91 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°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.

408 
WUUS51 KCLE 072152
SVRCLE
OHC099-133-151-155-072245-
/O.NEW.KCLE.SV.W.0182.120907T2152Z-120907T2245Z/

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

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN NORTHEAST OHIO
  EASTERN PORTAGE COUNTY IN NORTHEAST OHIO
  NORTHEASTERN STARK COUNTY IN NORTHEAST OHIO
  SOUTHERN TRUMBULL COUNTY IN NORTHEAST OHIO

* UNTIL 645 PM EDT

* AT 547 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 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 RAVENNA TO LOUISVILLE...AND
  MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WARREN...
  YOUNGSTOWN...
  ALLIANCE...
  SEBRING...
  NEWTON FALLS...
  LORDSTOWN...
  NILES...
  CANFIELD...

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 4074 8136 4124 8125 4134 8051 4098 8051
      4089 8053 4090 8082 4093 8084 4093 8089
      4090 8090 4090 8108 4078 8108
TIME...MOT...LOC 2152Z 259DEG 34KT 4116 8115 4085 8122

$$

LOMBARDY
2 follow-up statements
589 
WWUS51 KCLE 072229
SVSCLE

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

OHC133-151-072239-
/O.CAN.KCLE.SV.W.0182.000000T0000Z-120907T2245Z/
PORTAGE OH-STARK OH-
629 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN STARK AND EASTERN
PORTAGE COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHEASTERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4090 8090 4090 8099 4130 8080 4134 8051
      4098 8051 4089 8053 4090 8082 4093 8084
      4093 8089
TIME...MOT...LOC 2229Z 259DEG 34KT 4121 8069 4090 8077

$$

OHC099-155-072245-
/O.CON.KCLE.SV.W.0182.000000T0000Z-120907T2245Z/
MAHONING OH-TRUMBULL OH-
629 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHEASTERN TRUMBULL AND MAHONING COUNTIES...

AT 624 PM 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 NILES TO 10 MILES SOUTH OF
CANFIELD...MOVING EAST AT 40 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
YOUNGSTOWN...BOARDMAN...BROOKFIELD CENTER...STRUTHERS...POLAND...
HUBBARD...NEW MIDDLETOWN...WEST HILL AND LOWELLVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHEASTERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4090 8090 4090 8099 4130 8080 4134 8051
      4098 8051 4089 8053 4090 8082 4093 8084
      4093 8089
TIME...MOT...LOC 2229Z 259DEG 34KT 4121 8069 4090 8077

$$

LOMBARDY
666 
WWUS51 KCLE 072244
SVSCLE

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

OHC099-155-072255-
/O.EXP.KCLE.SV.W.0182.000000T0000Z-120907T2245Z/
MAHONING OH-TRUMBULL OH-
644 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TRUMBULL AND
MAHONING COUNTIES EXPIRES AT 645 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4090 8090 4090 8099 4130 8080 4134 8051
      4098 8051 4089 8053 4090 8082 4093 8084
      4093 8089
TIME...MOT...LOC 2245Z 259DEG 34KT 4122 8049 4091 8057

$$

LOMBARDY

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 2:12 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina, Summit48 min
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, 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.