Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 130, NWS Cleveland, OH

July 18, 2012Morrow County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 18, 2012, 3:29 PM EDT for Morrow County, Ohio. It was in force for 34 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
Jul 18, 2012, 3:29 PM EDT (19:29 UTC)
Expired
Jul 18, 2012, 4:03 PM EDT
In force
34 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Morrow County, OH

The radar

The Cleveland radar (KCLE), 134 km from the middle of the area, began a volume at 19:29 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
Jul 18, 3:50 PM EDTTSTM WND DMGSparta, OHA FEW TREES DOWN AND DIME HAIL.

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
Jul 18, 1:16 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.5 hours before the alert went out and 141 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 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2497 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 2012-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 square meters per square second.1939Sfc1 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
2497 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
-5 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.

728 
WUUS51 KCLE 181929
SVRCLE
OHC117-182015-
/O.NEW.KCLE.SV.W.0130.120718T1929Z-120718T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
329 PM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 415 PM EDT

* AT 324 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
  CARDINGTON...AND MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOUNT GILEAD...
  SPARTA...
  CHESTERVILLE...

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 4035 8293 4041 8294 4041 8300 4042 8303
      4049 8301 4049 8296 4061 8295 4060 8263
      4055 8262 4055 8264 4045 8264 4034 8265
TIME...MOT...LOC 1929Z 284DEG 11KT 4045 8289

$$

SJAMISON
2 follow-up statements
711 
WWUS51 KCLE 181943
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
343 PM EDT WED JUL 18 2012

OHC117-182015-
/O.CON.KCLE.SV.W.0130.000000T0000Z-120718T2015Z/
MORROW OH-
343 PM EDT WED JUL 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR MORROW COUNTY...

AT 338 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR FULTON...OR 8 MILES 
SOUTH OF MOUNT GILEAD...MOVING EAST AT 15 MPH. HEAVY RAINFALL IS 
ALSO OCCURRING WITH THIS STORM. 

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
MARENGO...SPARTA AND CHESTERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN OHIO.

&&

LAT...LON 4035 8293 4041 8294 4041 8300 4042 8303
      4049 8301 4049 8296 4061 8295 4060 8263
      4055 8262 4055 8264 4045 8264 4034 8265
TIME...MOT...LOC 1942Z 284DEG 11KT 4044 8284

$$

SJAMISON
964 
WWUS51 KCLE 182003
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
403 PM EDT WED JUL 18 2012

OHC117-182013-
/O.CAN.KCLE.SV.W.0130.000000T0000Z-120718T2015Z/
MORROW OH-
403 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR MORROW COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH
THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN OHIO.

LAT...LON 4035 8293 4041 8294 4041 8300 4042 8303
      4049 8301 4049 8296 4061 8295 4060 8263
      4055 8262 4055 8264 4045 8264 4034 8265
TIME...MOT...LOC 2003Z 284DEG 11KT 4042 8276

$$

SJAMISON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:18 PM EDTSevere Thunderstorm WarningCLEAshland, Holmes, Wayne42 min
Jul 18, 2:49 PM EDTSevere Thunderstorm WarningCLEMarion, Wyandot56 min
Jul 18, 3:10 PM EDTSevere Thunderstorm WarningCLEStark36 min
Jul 18, 3:14 PM EDTSevere Thunderstorm WarningCLEMahoning46 min
Jul 18, 6:33 PM EDTSevere Thunderstorm WarningCLEStark21 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.