Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 89, NWS Wilmington, OH

August 11, 20215 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 11, 2021, 3:10 PM EDT for 5 counties in Ohio. It was in force for 65 min. 13 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, 3:10 PM EDT (19:10 UTC)
Expired: Aug 11, 2021, 4:15 PM EDT
In force: 65 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Auglaize County, OH, Darke County, OH, Logan County, OH, Mercer County, OH, Shelby County, OH

The radar

The Cincinnati radar (KILN), 131 km from the middle of the area, began a volume at 19:11 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, 3:11 PM EDT	TSTM WND DMG	Wnw Kossuth, OH	TREE BLOWN DOWN ON 197
Aug 11, 3:13 PM EDT	TSTM WND DMG	1 Ne St. Marys, OH	SIDING RIPPED OFF THE SIDE OF STRUCTURE. TIME ESTIMATED FROM RADAR DATA.
Aug 11, 3:16 PM EDT	HAIL 0.5	Fort Recovery, OH	REPORT OF 1/2 INCH HAIL NEAR FT. RECOVERY
Aug 11, 3:18 PM EDT	TSTM WND DMG	4 E Wapakoneta, OH	POWER LINES BLOWN DOWN ON TOWN LINE-LIMA ROAD
Aug 11, 3:18 PM EDT	TSTM WND DMG	4 Nnw Wapakoneta, OH	TREE BLOWN DOWN ON SHORTLINE ROAD
Aug 11, 3:23 PM EDT	TSTM WND DMG	3 Wsw St. Henry, OH	POWER LINES WERE BLOWN DOWN ON TOWNSHP LINE ROAD AND LANGE ROAD
Aug 11, 3:29 PM EDT	TSTM WND DMG	5 Wsw Minster, OH	SEVERAL TREE LIMBS DOWN ALONG WITH POWERLINES. HUWER AND KREMER ROAD. TIME ESTIMATED FROM RADAR DATA.
Aug 11, 3:29 PM EDT	TSTM WND DMG	3 E Bellfountain, IN	TREE DOWN ACROSS STATE LINE ROAD AT 200 S BETWEEN JAY AND MERCER COUNTIES ON THE INDIANA SIDE.
Aug 11, 3:30 PM EDT	TSTM WND DMG	3 Wsw St. Henry, OH	A TREE WAS BLOWN DOWN ON TOWNSHIP LINE ROAD.
Aug 11, 3:32 PM EDT	TSTM WND DMG	W Osgood, OH	TWO TREES DOWN IN THE TOWN OF OSGOOD. TIME ESTIMATED FROM RADAR DATA.
Aug 11, 3:36 PM EDT	TSTM WND DMG	1 Sw Minster, OH	LARGE LIMB DOWN ON BARN ROOF ON MINSTER-EGYPT PIKE W OF MINSTER. TIME ESTIMATED FROM RADAR DATA.
Aug 11, 3:44 PM EDT	TSTM WND DMG	5 Ese Fort Loramie, OH	TREE FELL INTO POWER LINE ON MASON RD. TIME EST BY RADAR.
Aug 11, 3:44 PM EDT	TSTM WND DMG	5 Wsw Minster, OH	POWER LINES WERE BLOWN DOWN AT THE INTERSECTION OF KREMER AND HUWER ROADS

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.2 hours before the alert went out and 130 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: 1853 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

636 
WUUS51 KILN 111910
SVRILN
OHC011-037-091-107-149-112015-
/O.NEW.KILN.SV.W.0089.210811T1910Z-210811T2015Z/

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

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Shelby County in west central Ohio...
  Northwestern Logan County in west central Ohio...
  Northern Darke County in west central Ohio...
  Auglaize County in west central Ohio...
  Southern Mercer County in west central Ohio...

* Until 415 PM EDT.

* At 310 PM EDT, severe thunderstorms were located along a line 
  extending from Celina to Farmland, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Sidney, Greenville, Celina, Wapakoneta, St. Marys, Coldwater, Fort
  Shawnee, New Bremen, Minster, Versailles, St. Henry, Newport,
  Cridersville, Union City, Anna, Fort Loramie, Jackson Center, Fort
  Recovery, Ansonia and Botkins.

This includes I-75 in Ohio between mile markers 92 and 118.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 4066 8422 4066 8411 4064 8411 4064 8388
      4053 8388 4034 8401 4006 8481 4048 8480
      4069 8443 4069 8422
TIME...MOT...LOC 1910Z 289DEG 28KT 4065 8433 4039 8469 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hatzos

5 follow-up statements

100 
WWUS51 KILN 111921
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
321 PM EDT Wed Aug 11 2021

OHC011-037-091-107-149-112015-
/O.CON.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Shelby OH-Logan OH-Darke OH-Auglaize OH-Mercer OH-
321 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SHELBY...NORTHWESTERN LOGAN...NORTHERN DARKE...AUGLAIZE AND
SOUTHERN MERCER COUNTIES...

At 320 PM EDT, severe thunderstorms were located along a line 
extending from Wapakoneta to Winchester, moving southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Sidney, Greenville, Celina, Wapakoneta, St. Marys, Coldwater, Fort
Shawnee, New Bremen, Minster, Versailles, St. Henry, Newport,
Cridersville, Union City, Anna, Fort Loramie, Jackson Center, Fort
Recovery, Ansonia and Botkins.

This includes I-75 in Ohio between mile markers 92 and 118.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 4066 8411 4064 8411 4064 8388 4053 8388
      4034 8401 4006 8481 4048 8480 4053 8462
      4064 8445
TIME...MOT...LOC 1920Z 313DEG 30KT 4055 8424 4031 8469 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hatzos

835 
WWUS51 KILN 111933
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
333 PM EDT Wed Aug 11 2021

OHC011-037-091-107-149-112015-
/O.CON.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Shelby OH-Logan OH-Darke OH-Auglaize OH-Mercer OH-
333 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SHELBY...NORTHWESTERN LOGAN...NORTHERN DARKE...AUGLAIZE AND
SOUTHERN MERCER COUNTIES...

At 331 PM EDT, severe thunderstorms were located along a line
extending from Wapakoneta to Ansonia, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Osgood, Fort Loramie, Willowdell, Sidney, Greenville, St. Marys, New 
Bremen, Minster, Versailles, St. Henry, Newport, Union City, Anna, 
Jackson Center, Fort Recovery, Ansonia, Botkins, New Knoxville and 
Waynesfield.

This includes I-75 in Ohio between mile markers 92 and 116.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 4064 8411 4064 8388 4053 8388 4034 8401
      4006 8481 4044 8480
TIME...MOT...LOC 1931Z 290DEG 29KT 4055 8422 4024 8469 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hatzos

715 
WWUS51 KILN 111950
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
350 PM EDT Wed Aug 11 2021

OHC107-112000-
/O.CAN.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Mercer OH-
350 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MERCER COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
west central Ohio.

LAT...LON 4060 8388 4053 8388 4034 8401 4006 8481
      4026 8480 4035 8445 4048 8434 4053 8408
      4059 8398
TIME...MOT...LOC 1950Z 301DEG 29KT 4048 8402 4015 8456 

$$

OHC011-037-091-149-112015-
/O.CON.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Shelby OH-Logan OH-Darke OH-Auglaize OH-
350 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SHELBY...NORTHWESTERN LOGAN...NORTHERN DARKE AND CENTRAL AUGLAIZE
COUNTIES...

At 350 PM EDT, severe thunderstorms were located along a line 
extending from Jackson Center to Greenville, moving southeast at 35 
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Sidney, Greenville, New Bremen, Minster, Versailles, Newport, Union
City, Anna, Fort Loramie, Jackson Center, Ansonia, Botkins, Lakeview,
Chippewa Park, Hardin, Webster, Russia, Port Jefferson, Osgood and
North Star.

This includes I-75 in Ohio between mile markers 92 and 107.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 4060 8388 4053 8388 4034 8401 4006 8481
      4026 8480 4035 8445 4048 8434 4053 8408
      4059 8398
TIME...MOT...LOC 1950Z 301DEG 29KT 4048 8402 4015 8456 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hatzos

479 
WWUS51 KILN 112001
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
401 PM EDT Wed Aug 11 2021

OHC011-091-112010-
/O.CAN.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Logan OH-Auglaize OH-
401 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LOGAN AND CENTRAL
AUGLAIZE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

An additional severe thunderstorm warning remains in effect for 
portions of Logan County.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
west central Ohio.

LAT...LON 4034 8401 4006 8481 4022 8480 4033 8444
      4038 8434 4041 8400
TIME...MOT...LOC 2000Z 289DEG 28KT 4046 8394 4013 8448 

$$

OHC037-149-112015-
/O.CON.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Shelby OH-Darke OH-
401 PM EDT Wed Aug 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CENTRAL SHELBY AND CENTRAL DARKE COUNTIES...

At 400 PM EDT, severe thunderstorms were located along a line
extending from Lakeview to Bradford, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Sidney, Greenville, Versailles, Newport, Union City, Anna, Fort
Loramie, Ansonia, Hardin, Webster, Russia, Port Jefferson, Darke 
County Airport, Lake Loramie State Park, Sharpeye, Brock, Maplewood, 
Willowdell and Sharps Crossing.

This includes I-75 in Ohio between mile markers 92 and 99.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 4034 8401 4006 8481 4022 8480 4033 8444
      4038 8434 4041 8400
TIME...MOT...LOC 2000Z 289DEG 28KT 4046 8394 4013 8448 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hatzos

085 
WWUS51 KILN 112015
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
415 PM EDT Wed Aug 11 2021

OHC037-149-112025-
/O.EXP.KILN.SV.W.0089.000000T0000Z-210811T2015Z/
Shelby OH-Darke OH-
415 PM EDT Wed Aug 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SHELBY AND CENTRAL
DARKE COUNTIES HAS EXPIRED...
    
An additional severe thunderstorm warning remains in effect for 
portions of Shelby County until 445 PM.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
west central Ohio.

Please report previous wind damage or hail to the National Weather
Service by going to our website at weather.gov/iln and submitting
your report via social media.

LAT...LON 4034 8401 4006 8481 4022 8480 4033 8444
      4038 8434 4041 8400
TIME...MOT...LOC 2015Z 289DEG 28KT 4043 8382 4010 8436 

$$

Hatzos

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 1:07 AM EDT	Special Weather Statement	ILN	Mercer	38 min
Aug 11, 3:14 AM EDT	Special Weather Statement	ILN	Licking	31 min
Aug 11, 3:44 AM EDT	Special Weather Statement	ILN	Licking	31 min
Aug 11, 8:34 AM EDT	Special Weather Statement	ILN	Hardin	41 min
Aug 11, 2:18 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer	57 min
Aug 11, 2:55 PM EDT	Heat Advisory	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more	29 hr
Aug 11, 3:03 PM EDT	Special Weather Statement	ILN	Darke	27 min
Aug 11, 3:19 PM EDT	Severe Thunderstorm Warning	ILN	Hardin, Logan	56 min
Aug 11, 3:47 PM EDT	Severe Thunderstorm Warning	ILN	Darke, Miami, Shelby	41 min
Aug 11, 3:52 PM EDT	Special Weather Statement	ILN	Champaign, Logan	23 min
Aug 11, 4:11 PM EDT	Special Weather Statement	ILN	Hardin	19 min
Aug 11, 4:16 PM EDT	Special Weather Statement	ILN	Union	29 min
Aug 11, 4:24 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Logan, Union	37 min
Aug 11, 4:30 PM EDT	Special Weather Statement	ILN	Champaign	30 min
Aug 11, 4:47 PM EDT	Special Weather Statement	ILN	Franklin, Madison	28 min
Aug 11, 4:58 PM EDT	Special Weather Statement	ILN	Licking	32 min
Aug 11, 5:03 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Franklin, Madison, Union	42 min
Aug 11, 5:30 PM EDT	Severe Thunderstorm Warning	ILN	Licking	41 min
Aug 11, 5:37 PM EDT	Special Weather Statement	ILN	Fairfield	23 min
Aug 11, 5:58 PM EDT	Special Weather Statement	ILN	Fairfield	32 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.