Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 140, NWS Cleveland, OH

July 26, 2012Knox County, Morrow County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 26, 2012, 3:53 PM EDT for Knox County, Morrow County, Ohio. It was in force for 52 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: Jul 26, 2012, 3:53 PM EDT (19:53 UTC)
Expired: Jul 26, 2012, 4:45 PM EDT
In force: 52 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

Counties Knox County, OH, Morrow County, OH

The radar

The Cleveland radar (KCLE), 134 km from the middle of the area, began a volume at 19:55 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 26, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.9 hours before the alert went out and 147 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: 1791 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 1055 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 262 m²/s²
0-3 km storm-relative helicity: 287 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

279 
WUUS51 KCLE 261953
SVRCLE
OHC083-117-262045-
/O.NEW.KCLE.SV.W.0140.120726T1953Z-120726T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
353 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 445 PM EDT

* AT 350 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 75 MPH.  THIS STORM WAS LOCATED 14
  MILES WEST OF CENTERBURG...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOUNT VERNON...
  CENTERBURG...
  SPARTA...
  GAMBIER...
  DANVILLE...

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 4024 8247 4026 8249 4027 8275 4028 8276
      4034 8276 4035 8289 4036 8289 4053 8219
      4042 8218 4024 8219 4023 8220
TIME...MOT...LOC 1954Z 269DEG 39KT 4024 8289

$$

LAPLANTE

1 follow-up statement

874 
WWUS51 KCLE 262022
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
422 PM EDT THU JUL 26 2012

OHC117-262032-
/O.CAN.KCLE.SV.W.0140.000000T0000Z-120726T2045Z/
MORROW OH-
422 PM EDT THU JUL 26 2012

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4024 8247 4026 8249 4027 8275 4027 8271
      4035 8266 4035 8265 4036 8265 4053 8219
      4042 8218 4024 8219 4023 8220
TIME...MOT...LOC 2022Z 269DEG 39KT 4024 8249

$$

OHC083-262045-
/O.CON.KCLE.SV.W.0140.000000T0000Z-120726T2045Z/
KNOX OH-
422 PM EDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR KNOX COUNTY...

AT 419 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
10 MILES WEST OF MARTINSBURG...OR 11 MILES SOUTH OF MOUNT VERNON...
MOVING EAST AT 45 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
MARTINSBURG AND GAMBIER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4024 8247 4026 8249 4027 8275 4027 8271
      4035 8266 4035 8265 4036 8265 4053 8219
      4042 8218 4024 8219 4023 8220
TIME...MOT...LOC 2022Z 269DEG 39KT 4024 8249

$$

LOMBARDY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 10:05 PM EDT	Small Craft Advisory	CLE		22 hr
Jul 26, 2:55 AM EDT	Special Marine Warning	CLE		110 min
Jul 26, 1:00 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	45 min
Jul 26, 1:12 PM EDT	Severe Thunderstorm Warning	CLE	Portage, Summit	48 min
Jul 26, 1:15 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula	60 min
Jul 26, 1:21 PM EDT	Tornado Warning	CLE	Ashtabula, Trumbull	24 min
Jul 26, 1:38 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	52 min
Jul 26, 1:58 PM EDT	Severe Thunderstorm Warning	CLE	Stark	47 min
Jul 26, 2:28 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning	47 min
Jul 26, 3:10 PM EDT	Severe Thunderstorm Warning	CLE	Summit	50 min
Jul 26, 4:01 PM EDT	Severe Thunderstorm Warning	CLE	Knox	44 min
Jul 26, 4:49 PM EDT	Severe Thunderstorm Warning	CLE	Holmes	41 min
Jul 26, 5:35 PM EDT	Special Marine Warning	CLE		85 min
Jul 26, 5:37 PM EDT	Areal Flood Advisory	CLE	Medina, Summit	3 hr
Jul 26, 5:53 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Lorain	36 min
Jul 26, 5:55 PM EDT	Severe Thunderstorm Warning	CLE	Portage	37 min
Jul 26, 6:16 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning	35 min
Jul 26, 6:46 PM EDT	Special Marine Warning	CLE		52 min
Jul 26, 6:50 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga, Lake	40 min
Jul 26, 7:33 PM EDT	River Flood Warning	CLE	Geauga, Portage, Summit	2 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.