Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 85, NWS Cleveland, OH

August 11, 20216 counties in Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 11, 2021, 5:36 PM EDT for 6 counties in Ohio. It was in force for 69 min. 4 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 11, 2021, 5:36 PM EDT (21:36 UTC)
Expired: Aug 11, 2021, 6:45 PM EDT
In force: 69 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Mahoning County, OH, Medina County, OH, Portage County, OH, Stark County, OH, Summit County, OH, Wayne County, OH

The radar

The Cleveland radar (KCLE), 74 km from the middle of the area, began a volume at 21:37 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 11, 5:40 PM EDT	TSTM WND GST 65	1 N Wadsworth, OH	ESTIMATED 60-65 MPH WIND GUST, TREE LIMBS DOWN AND SHINGLES OFF BUILDINGS.
Aug 11, 5:57 PM EDT	TSTM WND DMG	2 N Green, OH	TREE DOWN AND MULTIPLE LARGE BRANCHES SNAPPED AT PRESTWICK COUNTRY CLUB.
Aug 11, 5:57 PM EDT	TSTM WND DMG	Tallmadge, OH	NUMEROUS TREES AND POWERLINES DOWN ACROSS THE CITY.
Aug 11, 6:11 PM EDT	TSTM WND DMG	Garrettsville, OH	NUMEROUS TREES AND POWERLINES DOWN THROUGHOUT GARRETTSVILLE.

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 11, 2:32 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 11, 4:57 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.6 hours before the alert went out and 121 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: 267 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 1321 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

359 
WUUS51 KCLE 112136
SVRCLE
OHC099-103-133-151-153-169-112245-
/O.NEW.KCLE.SV.W.0085.210811T2136Z-210811T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
536 PM EDT Wed Aug 11 2021

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Portage County in northeastern Ohio...
  Western Mahoning County in northeastern Ohio...
  Eastern Medina County in northeastern Ohio...
  Stark County in northeastern Ohio...
  Summit County in northeastern Ohio...
  Eastern Wayne County in northeastern Ohio...

* Until 645 PM EDT.

* At 535 PM EDT, a line of severe thunderstorm was located near 
  Brunswick to Wooster, moving east at 45 mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Akron, Canton, Medina, Ravenna, Cuyahoga Falls, Brunswick,
  Massillon, Kent, Barberton, Green, Alliance, Hudson, Wadsworth,
  Tallmadge, North Canton, Streetsboro, Macedonia, Louisville,
  Orrville and Rittman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4067 8165 4067 8175 4099 8176 4099 8187
      4127 8187 4130 8100 4099 8099 4090 8102
      4090 8109 4073 8109 4072 8124 4065 8124
      4065 8143 4066 8146 4064 8164
TIME...MOT...LOC 2135Z 274DEG 40KT 4120 8177 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Campbell

1 follow-up statement

825 
WWUS51 KCLE 112201 RRA
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
601 PM EDT Wed Aug 11 2021

OHC099-103-133-151-153-169-112245-
/O.CON.KCLE.SV.W.0085.000000T0000Z-210811T2245Z/
Portage OH-Mahoning OH-Medina OH-Stark OH-Summit OH-Wayne OH-
601 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR PORTAGE...WESTERN MAHONING...EASTERN MEDINA...STARK...SUMMIT AND
EASTERN WAYNE COUNTIES...

At 601 PM EDT, a line of severe thunderstorms was located from 
Hudson to Massillon, moving east at 45 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Akron, Canton, Ravenna, Cuyahoga Falls, Massillon, Kent, Barberton,
Green, Alliance, Hudson, Wadsworth, Tallmadge, North Canton,
Streetsboro, Macedonia, Louisville, Orrville, Rittman, Sebring and
Mogadore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4067 8165 4067 8175 4099 8176 4127 8175
      4130 8100 4099 8099 4090 8102 4090 8109
      4073 8109 4072 8124 4065 8124 4065 8143
      4066 8146 4064 8164
TIME...MOT...LOC 2201Z 274DEG 40KT 4118 8139 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Campbell

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 2:04 AM EDT	Special Weather Statement	CLE	Hancock, Lucas, Wood, Wyandot	41 min
Aug 11, 2:26 AM EDT	Special Marine Warning	CLE		80 min
Aug 11, 2:40 AM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Sandusky, Wood	65 min
Aug 11, 2:50 AM EDT	Severe Thunderstorm Warning	CLE	Erie, Ottawa, Sandusky, Seneca	55 min
Aug 11, 3:03 AM EDT	Heat Advisory	CLE	Erie, Hancock, Lucas, Ottawa, Sandusky, Seneca and 1 more	12 hr
Aug 11, 3:36 AM EDT	Special Marine Warning	CLE		54 min
Aug 11, 4:03 AM EDT	Special Weather Statement	CLE	Ashtabula, Lake	42 min
Aug 11, 4:23 AM EDT	Special Marine Warning	CLE		67 min
Aug 11, 5:08 AM EDT	Special Marine Warning	CLE		50 min
Aug 11, 7:53 AM EDT	Special Weather Statement	CLE	Wood	52 min
Aug 11, 8:09 AM EDT	Special Weather Statement	CLE	Hancock	51 min
Aug 11, 8:29 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Hancock, Seneca, Wyandot	46 min
Aug 11, 8:40 AM EDT	Special Weather Statement	CLE	Erie, Sandusky	50 min
Aug 11, 8:41 AM EDT	Special Marine Warning	CLE		78 min
Aug 11, 8:58 AM EDT	Severe Thunderstorm Warning	CLE	Crawford, Huron, Richland, Seneca	62 min
Aug 11, 9:14 AM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Lorain	61 min
Aug 11, 9:30 AM EDT	Special Weather Statement	CLE	Crawford, Richland	45 min
Aug 11, 9:44 AM EDT	Special Weather Statement	CLE	Medina	46 min
Aug 11, 10:13 AM EDT	Special Weather Statement	CLE	Portage, Summit	62 min
Aug 11, 10:20 AM EDT	Special Weather Statement	CLE	Stark, Wayne	40 min
Aug 11, 10:53 AM EDT	Special Weather Statement	CLE	Mahoning	67 min
Aug 11, 10:56 AM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage, Stark	64 min
Aug 11, 11:02 AM EDT	Special Weather Statement	CLE	Trumbull	43 min
Aug 11, 11:45 AM EDT	Special Weather Statement	CLE	Trumbull	15 min
Aug 11, 2:48 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Lucas, Wood	57 min
Aug 11, 3:15 PM EDT	Special Marine Warning	CLE		90 min
Aug 11, 3:35 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Crawford, Hancock, Marion, Seneca, Wyandot	55 min
Aug 11, 3:37 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Sandusky, Wood	53 min
Aug 11, 3:53 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Ottawa	52 min
Aug 11, 4:08 PM EDT	Special Marine Warning	CLE		2 hr
Aug 11, 4:14 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Crawford, Erie, Huron, Richland, Seneca	61 min
Aug 11, 4:20 PM EDT	Special Weather Statement	CLE	Morrow	55 min
Aug 11, 4:30 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Crawford, Knox, Marion, Morrow, Richland	60 min
Aug 11, 4:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Ashland, Cuyahoga, Erie, Huron, Lorain, Medina	66 min
Aug 11, 4:44 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Morrow, Richland	61 min
Aug 11, 4:45 PM EDT	Special Marine Warning	CLE		12 min
Aug 11, 5:15 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Knox, Wayne	60 min
Aug 11, 5:17 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Cuyahoga, Geauga, Lake, Portage, Summit	58 min
Aug 11, 5:29 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Knox	30 min
Aug 11, 5:41 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Ashtabula, Geauga, Lake, Portage, Trumbull	79 min
Aug 11, 5:46 PM EDT	Special Marine Warning	CLE		86 min
Aug 11, 5:47 PM EDT	Areal Flood Advisory	CLE	Cuyahoga, Summit	3 hr
Aug 11, 6:09 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Ashtabula	75 min
Aug 11, 6:12 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Mahoning, Portage, Trumbull	69 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2021 Every severe thunderstorm warning in 2021

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.