Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 235, NWS Cleveland, OH

August 7, 2011Marion County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 7, 2011, 4:47 PM EDT for Marion County, Ohio. It was in force for 58 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
Aug 7, 2011, 4:47 PM EDT (20:47 UTC)
Expired
Aug 7, 2011, 5:45 PM EDT
In force
58 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Marion County, OH

The radar

The Cincinnati radar (KILN), 134 km from the middle of the area, began a volume at 20:47 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.8 hours before the alert went out and 132 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, Cncnati-Daytn, OH at 12:00Z on 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1233 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, Cncnati-Daytn, OH at 12:00Z on 2011-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1233 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

572 
WUUS51 KCLE 072047
SVRCLE
OHC101-072145-
/O.NEW.KCLE.SV.W.0235.110807T2047Z-110807T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
447 PM EDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN NORTH CENTRAL OHIO

* UNTIL 545 PM EDT

* AT 446 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 13 MILES NORTHWEST OF LA RUE TO
  LA RUE TO 16 MILES SOUTHWEST OF PROSPECT...AND MOVING EAST AT 40
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  MARION...
  PROSPECT...
  WALDO...

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 4044 8325 4045 8326 4050 8326 4050 8341
      4051 8342 4064 8343 4065 8286 4064 8295
      4049 8296 4048 8301 4043 8302
TIME...MOT...LOC 2047Z 261DEG 35KT 4069 8356 4050 8336
          4027 8334

$$

OUDEMAN
2 follow-up statements
939 
WWUS51 KCLE 072118
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
518 PM EDT SUN AUG 7 2011

OHC101-072145-
/O.CON.KCLE.SV.W.0235.000000T0000Z-110807T2145Z/
MARION OH-
518 PM EDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR MARION COUNTY...

AT 513 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 MARION TO 6 MILES EAST OF MARION
TO WALDO...MOVING EAST AT 40 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4044 8325 4045 8326 4050 8326 4050 8341
      4051 8342 4064 8343 4065 8286 4064 8295
      4049 8296 4048 8301 4043 8302
TIME...MOT...LOC 2118Z 261DEG 35KT 4066 8306 4057 8296
          4045 8295

$$

MITCHELL
938 
WWUS51 KCLE 072146
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
546 PM EDT SUN AUG 7 2011

OHC101-072156-
/O.EXP.KCLE.SV.W.0235.000000T0000Z-110807T2145Z/
MARION OH-
546 PM EDT SUN AUG 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR MARION COUNTY EXPIRED AT 545
PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF 
THE WARNED AREA...HOWEVER HEAVY RAIN IS STILL POSSIBLE ACROSS MARION 
COUNTY.

LAT...LON 4044 8325 4045 8326 4050 8326 4050 8341
      4051 8342 4064 8343 4065 8286 4064 8295
      4049 8296 4048 8301 4043 8302
TIME...MOT...LOC 2118Z 261DEG 35KT 4066 8306 4057 8296
          4045 8295

$$

MITCHELL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 8:36 PM EDTAreal Flood AdvisoryCLESandusky, Wood3 hr
Aug 6, 11:07 PM EDTAreal Flood AdvisoryCLEHancock6 hr
Aug 7, 12:54 AM EDTAreal Flood AdvisoryCLEMarion3 hr
Aug 7, 2:38 AM EDTAreal Flood WarningCLEMarion4 hr
Aug 7, 6:36 AM EDTAreal Flood AdvisoryCLEMarion4 hr
Aug 7, 7:03 AM EDTSpecial Marine WarningCLE87 min
Aug 7, 12:11 PM EDTSmall Craft AdvisoryCLE8 hr
Aug 7, 3:09 PM EDTSpecial Marine WarningCLE2 hr
Aug 7, 7:15 PM EDTSpecial Marine WarningCLE2 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2011Every severe thunderstorm warning in 2011

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.