Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 86, NWS Cleveland, OH

August 11, 20215 counties in Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 11, 2021, 5:41 PM EDT for 5 counties in Ohio. It was in force for 79 min. 8 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, 5:41 PM EDT (21:41 UTC)
Expired: Aug 11, 2021, 7:00 PM EDT
In force: 79 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Ashtabula County, OH, Geauga County, OH, Lake County, OH, Portage County, OH, Trumbull County, OH

The radar

The Cleveland radar (KCLE), 87 km from the middle of the area, began a volume at 21:44 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, 5:47 PM EDT	TSTM WND GST 41	4 W Ashtabula, OH	DELAYED REPORT PERSONAL WEATHER STATION.
Aug 11, 5:55 PM EDT	TSTM WND DMG	4 Ene Chardon, OH	TREE DOWN INTO WIRES.
Aug 11, 6:04 PM EDT	TSTM WND DMG	5 Nne West Farmington, OH	NUMEROUS TREES AND POWERLINES DOWN THROUGH MESOPOTAMIA TOWNSHIP.
Aug 11, 6:06 PM EDT	TSTM WND DMG	Hiram, OH	NUMEROUS TREES AND POWERLINES REPORTED DOWN ACROSS HIRAM AND HIRAM TOWNSHIP.
Aug 11, 6:08 PM EDT	TSTM WND GST 54	2 Nne Conneaut, OH	DELAYED REPORT PERSONAL WEATHER STATION.
Aug 11, 6:09 PM EDT	TSTM WND DMG	3 Ene Garrettsville, OH	NUMEROUS TREES AND POWERLINE REPORTED DOWN ACROSS NELSON TOWNSHIP.
Aug 11, 6:23 PM EDT	TSTM WND DMG	1 Sse Ashtabula, OH	3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
Aug 11, 6:23 PM EDT	TSTM WND DMG	8 Nnw Orangeville, OH	NUMEROUS TREES AND POWERLINES DOWN ACROSS KINSMAN TOWNSHIP.

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, 4:57 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.7 hours before the alert went out and 139 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.

565 
WUUS51 KCLE 112141
SVRCLE
OHC007-055-085-133-155-112300-
/O.NEW.KCLE.SV.W.0086.210811T2141Z-210811T2300Z/

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

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Northeastern Portage County in northeastern Ohio...
  Northern Trumbull County in northeastern Ohio...
  Geauga County in northeastern Ohio...
  Lake County in northeastern Ohio...
  Ashtabula County in northeastern Ohio...

* Until 700 PM EDT.

* At 541 PM EDT, a severe thunderstorm was located near Chardon,
  moving east at 35 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...
  Painesville, Ashtabula, Conneaut, Chardon, Fairport Harbor,
  Geneva-On-The-Lake, Mentor, Cortland, Geneva, Madison, North
  Kingsville, Middlefield, Garrettsville, Kinsman, North Bloomfield,
  Perry, Orwell, Burton, Andover and Mantua.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4132 8052 4127 8126 4178 8130 4199 8052
TIME...MOT...LOC 2141Z 258DEG 29KT 4161 8110 

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

$$

Campbell

3 follow-up statements

090 
WWUS51 KCLE 112216
SVSCLE

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

OHC085-112226-
/O.CAN.KCLE.SV.W.0086.000000T0000Z-210811T2300Z/
Lake OH-
616 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR LAKE COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northeastern Ohio.

LAT...LON 4132 8052 4127 8126 4151 8127 4172 8100
      4191 8080 4199 8052
TIME...MOT...LOC 2216Z 258DEG 29KT 4167 8073 

$$

OHC007-055-133-155-112300-
/O.CON.KCLE.SV.W.0086.000000T0000Z-210811T2300Z/
Portage OH-Trumbull OH-Geauga OH-Ashtabula OH-
616 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHEASTERN PORTAGE...NORTHERN TRUMBULL...GEAUGA AND ASHTABULA
COUNTIES...

At 616 PM EDT, a severe thunderstorm was located 9 miles northwest of
Andover, or 15 miles south of Ashtabula, moving east at 35 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...
Ashtabula, Conneaut, Chardon, Cortland, Geneva, North Kingsville,
Middlefield, Garrettsville, Kinsman, North Bloomfield, Orwell,
Burton, Andover, Mantua, West Farmington, Bristolville, Parkman,
Huntsburg, Claridon and Mecca.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4132 8052 4127 8126 4151 8127 4172 8100
      4191 8080 4199 8052
TIME...MOT...LOC 2216Z 258DEG 29KT 4167 8073 

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

$$

Campbell

877 
WWUS51 KCLE 112236
SVSCLE

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

OHC055-133-112246-
/O.CAN.KCLE.SV.W.0086.000000T0000Z-210811T2300Z/
Portage OH-Geauga OH-
636 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PORTAGE AND
GEAUGA COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northeastern Ohio.

LAT...LON 4199 8052 4132 8052 4129 8100 4136 8100
      4152 8090 4182 8067
TIME...MOT...LOC 2236Z 258DEG 29KT 4170 8052 

$$

OHC007-155-112300-
/O.CON.KCLE.SV.W.0086.000000T0000Z-210811T2300Z/
Trumbull OH-Ashtabula OH-
636 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHERN TRUMBULL AND EASTERN ASHTABULA COUNTIES...

At 636 PM EDT, a severe thunderstorm was located near Pymatuning
North, or 15 miles south of Conneaut, moving east at 35 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...
Conneaut, Cortland, Kinsman, North Bloomfield, Orwell, Andover, West
Farmington, Bristolville, Mecca, Johnston, Roaming Shores, Pierpont,
Cherry Valley, Orangeville, Kelloggsville and Champion Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4199 8052 4132 8052 4129 8100 4136 8100
      4152 8090 4182 8067
TIME...MOT...LOC 2236Z 258DEG 29KT 4170 8052 

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

$$

Campbell

370 
WWUS51 KCLE 112250
SVSCLE

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

OHC007-155-112300-
/O.EXP.KCLE.SV.W.0086.000000T0000Z-210811T2300Z/
Trumbull OH-Ashtabula OH-
650 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN TRUMBULL AND EASTERN
ASHTABULA COUNTIES WILL EXPIRE AT 700 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northeastern Ohio.

LAT...LON 4199 8052 4132 8052 4129 8100 4136 8100
      4152 8090 4182 8067
TIME...MOT...LOC 2250Z 258DEG 29KT 4172 8041 

$$

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, 5:36 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Mahoning, Medina, Portage, Stark, Summit, Wayne	69 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.