Alert archive / Ohio / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 232, NWS Cleveland, OH

August 20, 2007Richland County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 20, 2007, 2:34 PM EDT for Richland County, Ohio. It was in force for 40 min. 2 reports 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: Aug 20, 2007, 2:34 PM EDT (18:34 UTC)
Expired: Aug 20, 2007, 3:14 PM EDT
In force: 40 min
Issued by: NWS Cleveland, OH
Area: Counties, with a storm outline in the text

County Richland County, OH

The radar

The Cleveland radar (KCLE), 91 km from the middle of the area, began a volume at 18:34 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

Time	Report	Where	Remark
Aug 20, 2:55 PM EDT	HAIL 0.88	2 S Mansfield, OH
Aug 20, 3:00 PM EDT	TSTM WND DMG	Lexington, OH	POLE BARN BLOWN OVER.

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.

Issued	Product	Office	Lasted
Aug 20, 1:19 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.6 hours before the alert went out and 184 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: 579 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCLE 201834
SVRCLE
OHC139-201930-
/O.NEW.KCLE.SV.W.0232.070820T1834Z-070820T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
234 PM EDT MON AUG 20 2007

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 330 PM EDT

* AT 225 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  ONTARIO...OR ABOUT NEAR MANSFIELD...AND MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

LAT...LON 4071 8261 4072 8272 4086 8272 4093 8242
      4081 8241 4080 8239 4073 8239 4072 8235
      4065 8234 4062 8261

$$

LAPLANTE

1 follow-up statement

000 
WWUS51 KCLE 201914
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
314 PM EDT MON AUG 20 2007

OHC139-201924-
/O.CAN.KCLE.SV.W.0232.000000T0000Z-070820T1930Z/
RICHLAND OH-
314 PM EDT MON AUG 20 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL RICHLAND COUNTY IS
CANCELLED...

LAT...LON 4071 8261 4072 8272 4086 8272 4093 8242
      4081 8241 4080 8239 4073 8239 4072 8235
      4065 8234 4062 8261

$$

THOMPSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 5:32 AM EDT	Areal Flood Advisory	CLE	Lucas, Ottawa, Sandusky, Wood	6 hr
Aug 20, 7:01 AM EDT	Areal Flood Advisory	CLE	Erie, Huron, Seneca	6 hr
Aug 20, 9:30 AM EDT	Areal Flood Advisory	CLE	Ashland, Lorain, Medina, Summit, Wayne	8 hr
Aug 20, 9:52 AM EDT	Flash Flood Warning	CLE	Medina, Wayne	6 hr
Aug 20, 10:10 AM EDT	Flash Flood Warning	CLE	Stark, Summit	6 hr
Aug 20, 10:16 AM EDT	Areal Flood Warning	CLE	Huron, Sandusky, Seneca	20 hr
Aug 20, 10:40 AM EDT	Areal Flood Advisory	CLE	Mahoning, Portage	8 hr
Aug 20, 10:56 AM EDT	Areal Flood Warning	CLE	Lorain	20 hr
Aug 20, 11:18 AM EDT	Flash Flood Warning	CLE	Mahoning	6 hr
Aug 20, 11:31 AM EDT	Areal Flood Warning	CLE	Wood	22 hr
Aug 20, 11:36 AM EDT	Areal Flood Advisory	CLE	Lucas, Ottawa	11 hr
Aug 20, 11:58 AM EDT	Areal Flood Warning	CLE	Cuyahoga, Geauga, Lake, Portage	11 hr
Aug 20, 12:49 PM EDT	Areal Flood Warning	CLE	Erie	18 hr
Aug 20, 1:01 PM EDT	River Flood Warning	CLE	Erie, Huron	24 hr
Aug 20, 1:26 PM EDT	River Flood Warning	CLE	Ottawa, Sandusky, Wood	4 days
Aug 20, 1:27 PM EDT	Severe Thunderstorm Warning	CLE	Wyandot	55 min
Aug 20, 2:06 PM EDT	River Flood Warning	CLE	Geauga, Portage, Summit	8 hr
Aug 20, 2:15 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	45 min
Aug 20, 2:20 PM EDT	Tornado Warning	CLE	Crawford, Morrow	55 min
Aug 20, 2:28 PM EDT	River Flood Warning	CLE	Cuyahoga	8 hr
Aug 20, 2:55 PM EDT	Tornado Warning	CLE	Richland	24 min
Aug 20, 3:01 PM EDT	Severe Thunderstorm Warning	CLE	Ashland	22 min
Aug 20, 3:04 PM EDT	Severe Thunderstorm Warning	CLE	Holmes	56 min
Aug 20, 3:10 PM EDT	Severe Thunderstorm Warning	CLE	Knox	46 min
Aug 20, 3:40 PM EDT	Areal Flood Warning	CLE	Medina, Stark, Summit, Wayne	12 hr
Aug 20, 4:27 PM EDT	River Flood Warning	CLE	Lorain	59 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2007 Every severe thunderstorm warning in 2007

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.