Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 186, NWS Cleveland, OH

October 14, 2012Knox County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Oct 14, 2012, 8:22 PM EDT for Knox County, Ohio. It was in force for 53 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: Oct 14, 2012, 8:22 PM EDT (00:22 UTC)
Expired: Oct 14, 2012, 9:15 PM EDT
In force: 53 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Knox County, OH

The radar

The Cleveland radar (KCLE), 129 km from the middle of the area, began a volume at 00:23 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 00:00Z, 0.4 hours before the alert went out and 151 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 221 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 873 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

407 
WUUS51 KCLE 150022
SVRCLE
OHC083-150115-
/O.NEW.KCLE.SV.W.0186.121015T0022Z-121015T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
822 PM EDT SUN OCT 14 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 915 PM EDT

* AT 818 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 9 MILES
  SOUTH OF MOUNT VERNON...AND MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GAMBIER...
  FREDERICKTOWN...
  DANVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4026 8249 4028 8275 4035 8275 4034 8265
      4036 8264 4055 8264 4055 8237 4057 8218
      4024 8220 4024 8247
TIME...MOT...LOC 0022Z 221DEG 52KT 4031 8246

$$

KIELTYKA

2 follow-up statements

732 
WWUS51 KCLE 150038
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
838 PM EDT SUN OCT 14 2012

OHC083-150115-
/O.CON.KCLE.SV.W.0186.000000T0000Z-121015T0115Z/
KNOX OH-
838 PM EDT SUN OCT 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR KNOX COUNTY...

AT 828 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
9 MILES EAST OF MOUNT VERNON...MOVING NORTHEAST AT 60 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE....

LAT...LON 4026 8249 4028 8275 4035 8275 4034 8265
      4036 8264 4055 8264 4055 8237 4057 8218
      4024 8220 4024 8247
TIME...MOT...LOC 0038Z 227DEG 52KT 4047 8216

$$

WILLARD

508 
WWUS51 KCLE 150115
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
915 PM EDT SUN OCT 14 2012

OHC083-150126-
/O.EXP.KCLE.SV.W.0186.000000T0000Z-121015T0115Z/
KNOX OH-
915 PM EDT SUN OCT 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR KNOX COUNTY EXPIRED AT 915 PM
EDT...

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

LAT...LON 4026 8249 4028 8275 4035 8275 4034 8265
      4036 8264 4055 8264 4055 8237 4057 8218
      4024 8220 4024 8247
TIME...MOT...LOC 0038Z 227DEG 52KT 4047 8215

$$

WILLARD

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 10:00 PM EDT	Low Water Advisory	CLE		14 hr
Oct 15, 6:28 AM EDT	Small Craft Advisory	CLE		28 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.