Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 112, NWS Cleveland, OH

July 4, 2012Mahoning County, Stark County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 4, 2012, 9:57 PM EDT for Mahoning County, Stark County, Ohio. It was in force for 63 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 4, 2012, 9:57 PM EDT (01:57 UTC)
Expired: Jul 4, 2012, 11:00 PM EDT
In force: 63 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

Counties Mahoning County, OH, Stark County, OH

The radar

The Cleveland radar (KCLE), 85 km from the middle of the area, began a volume at 02:00 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
Jul 4, 10:50 PM EDT	TSTM WND DMG	Boardman, OH	A TREE WAS DOWNED ON POWER LINES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 2.0 hours before the alert went out and 101 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: 1419 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 2023 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 133 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.

075 
WUUS51 KCLE 050157
SVRCLE
OHC099-151-050300-
/O.NEW.KCLE.SV.W.0112.120705T0157Z-120705T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
957 PM EDT WED JUL 4 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN NORTHEAST OHIO
  STARK COUNTY IN NORTHEAST OHIO

* UNTIL 1100 PM EDT

* AT 950 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 20 MILES NORTH OF SEBRING TO 15
  MILES NORTHWEST OF NORTH CANTON...AND MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CANTON...
  YOUNGSTOWN...
  HARTVILLE...
  NORTH CANTON...
  MASSILLON...
  ALLIANCE...
  NAVARRE...
  BREWSTER...
  SEBRING...
  LOUISVILLE...
  WILMOT...
  BOARDMAN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM HAS A HISTORY OF LARGE DAMAGING HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE 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 4091 8164 4091 8143 4099 8141 4099 8100
      4114 8099 4113 8052 4090 8052 4090 8082
      4093 8084 4093 8089 4090 8090 4090 8108
      4073 8108 4072 8123 4065 8124 4066 8146
      4063 8165
TIME...MOT...LOC 0157Z 333DEG 28KT 4116 8104 4096 8158

$$

LAPLANTE

2 follow-up statements

256 
WWUS51 KCLE 050239
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1039 PM EDT WED JUL 4 2012

OHC099-151-050300-
/O.CON.KCLE.SV.W.0112.000000T0000Z-120705T0300Z/
MAHONING OH-STARK OH-
1039 PM EDT WED JUL 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR STARK AND MAHONING COUNTIES...

AT 1029 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 CANFIELD TO LOUISVILLE...MOVING 
SOUTHEAST AT 40 MPH.  THE STRONGEST WINDS ARE EXPECTED SOUTH OF 
ELLSWORTH TO GREENFORD IN MAHONING COUNTY.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
WAYNESBURG...LOWELLVILLE AND NEW MIDDLETOWN.

LAT...LON 4091 8164 4091 8143 4099 8141 4099 8100
      4114 8099 4113 8052 4090 8052 4090 8082
      4093 8084 4093 8089 4090 8090 4090 8108
      4073 8108 4072 8123 4065 8124 4066 8146
      4063 8165
TIME...MOT...LOC 0237Z 312DEG 34KT 4098 8070 4078 8124

$$

LAPLANTE

274 
WWUS51 KCLE 050302
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1102 PM EDT WED JUL 4 2012

OHC099-151-050311-
/O.EXP.KCLE.SV.W.0112.000000T0000Z-120705T0300Z/
MAHONING OH-STARK OH-
1102 PM EDT WED JUL 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR STARK AND MAHONING COUNTIES
EXPIRES AT 1100 PM EDT...

THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKEND AND HAVE NEARLY 
MOVED OUT OF THE WARNED AREA.

LAT...LON 4091 8164 4091 8143 4099 8141 4099 8100
      4114 8099 4113 8052 4090 8052 4090 8082
      4093 8084 4093 8089 4090 8090 4090 8108
      4073 8108 4072 8123 4065 8124 4066 8146
      4063 8165
TIME...MOT...LOC 0239Z 312DEG 34KT 4097 8068 4077 8122

$$

LAPLANTE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 8:03 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Ottawa, Sandusky, Seneca	49 min
Jul 4, 8:08 PM EDT	Flash Flood Warning	CLE	Erie, Lucas, Ottawa, Sandusky	106 min
Jul 4, 8:50 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Marion, Wyandot	70 min
Jul 4, 9:08 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Richland	82 min
Jul 4, 9:14 PM EDT	Flash Flood Warning	CLE	Hancock, Marion, Wyandot	102 min
Jul 4, 9:20 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Geauga, Trumbull	55 min
Jul 4, 9:31 PM EDT	Severe Thunderstorm Warning	CLE	Medina, Portage, Summit	59 min
Jul 4, 9:50 PM EDT	Severe Thunderstorm Warning	CLE	Holmes, Knox	55 min
Jul 4, 10:46 PM EDT	Severe Thunderstorm Warning	CLE	Knox	29 min
Jul 5, 3:45 AM EDT	Heat Advisory	CLE	Ashland, Crawford, Erie, Hancock, Holmes, Huron and 18 more	15 hr
Jul 5, 4:48 AM EDT	Special Marine Warning	CLE		117 min
Jul 5, 6:06 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Erie, Lorain, Ottawa, Sandusky	69 min
Jul 5, 6:36 AM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake	54 min
Jul 5, 6:41 AM EDT	Severe Thunderstorm Warning	CLE	Lorain, Medina, Summit	79 min
Jul 5, 6:49 AM EDT	Special Marine Warning	CLE		116 min
Jul 5, 6:53 AM EDT	Severe Thunderstorm Warning	CLE	Huron	43 min
Jul 5, 7:09 AM EDT	Severe Thunderstorm Warning	CLE	Ashland, Wayne	51 min
Jul 5, 7:12 AM EDT	Severe Thunderstorm Warning	CLE	Portage	63 min
Jul 5, 8:03 AM EDT	Areal Flood Advisory	CLE	Morrow	3 hr
Jul 5, 8:34 AM EDT	Flash Flood Warning	CLE	Morrow	6 hr
Jul 5, 8:41 AM EDT	Areal Flood Advisory	CLE	Ashland, Knox, Richland	5 hr
Jul 5, 3:19 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Wood	56 min
Jul 5, 3:28 PM EDT	Excessive Heat Warning	CLE	Ashland, Crawford, Erie, Hancock, Holmes, Huron and 15 more	30 hr
Jul 5, 3:28 PM EDT	Heat Advisory	CLE	Ashtabula, Cuyahoga, Geauga, Lake, Mahoning, Portage and 1 more	30 hr
Jul 5, 5:01 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Wyandot	59 min
Jul 5, 7:04 PM EDT	Severe Thunderstorm Warning	CLE	Marion	30 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.