Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Wilmington, OH

June 18, 20214 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 18, 2021, 5:57 PM EDT for 4 counties in Ohio. It was in force for 33 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: Jun 18, 2021, 5:57 PM EDT (21:57 UTC)
Expired: Jun 18, 2021, 6:30 PM EDT
In force: 33 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Clark County, OH, Greene County, OH, Miami County, OH, Montgomery County, OH

The radar

The Cincinnati radar (KILN), 49 km from the middle of the area, began a volume at 21:59 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
Jun 18, 6:00 PM EDT	HAIL 1.75	Trotwood, OH
Jun 18, 6:08 PM EDT	HAIL 1	Northridge, OH	DAMAGE TO VEHICLES

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
Jun 18, 4:02 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.0 hours before the alert went out and 49 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1560 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

405 
WUUS51 KILN 182157
SVRILN
OHC023-057-109-113-182230-
/O.NEW.KILN.SV.W.0022.210618T2157Z-210618T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
557 PM EDT Fri Jun 18 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Southwestern Clark County in west central Ohio...
  Northwestern Greene County in west central Ohio...
  Northeastern Montgomery County in west central Ohio...
  Southeastern Miami County in west central Ohio...

* Until 630 PM EDT.

* At 557 PM EDT, a severe thunderstorm was located over Northridge,
  moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines.

* Locations impacted include...
  Dayton, Kettering, Beavercreek, Huber Heights, Fairborn, Trotwood,
  Vandalia, Englewood, Moraine, New Carlisle, Oakwood, Yellow
  Springs, Wright-Patterson Afb, Enon, Riverside, Clayton, Shiloh,
  Donnelsville, Green Meadows and Fort Mckinley.

This includes the following Interstates...
 I-70 in Ohio between mile markers 27 and 48.
 I-75 in Ohio between mile markers 51 and 63.

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.

&&

A Tornado Watch remains in effect until 1100 PM EDT for west central
Ohio.

LAT...LON 3974 8390 3972 8422 3979 8433 3986 8433
      3996 8394
TIME...MOT...LOC 2157Z 261DEG 18KT 3982 8424 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Franks

2 follow-up statements

099 
WWUS51 KILN 182213
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
613 PM EDT Fri Jun 18 2021

OHC023-057-109-113-182230-
/O.CON.KILN.SV.W.0022.000000T0000Z-210618T2230Z/
Clark OH-Greene OH-Montgomery OH-Miami OH-
613 PM EDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTHWESTERN CLARK...NORTHWESTERN GREENE...NORTHEASTERN
MONTGOMERY AND SOUTHEASTERN MIAMI COUNTIES...

At 613 PM EDT, a severe thunderstorm was located over Huber Heights,
moving east at 20 mph.

HAZARD...Ping pong ball size hail.

SOURCE...Trained weather spotters.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Dayton, Beavercreek, Huber Heights, Fairborn, Trotwood, Vandalia, New
Carlisle, Yellow Springs, Wright-Patterson Afb, Enon, Riverside,
Clayton, Shiloh, Donnelsville, Green Meadows, Medway, Phoneton,
Holiday Valley, Crystal Lakes and Brandt.

This includes the following Interstates...
 I-70 in Ohio between mile markers 31 and 48.
 I-75 in Ohio between mile markers 55 and 63.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

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.

&&

A Tornado Watch remains in effect until 1100 PM EDT for west central
Ohio.

LAT...LON 3974 8390 3973 8413 3982 8427 3988 8425
      3996 8394
TIME...MOT...LOC 2213Z 261DEG 18KT 3983 8414 

HAIL...1.50IN
WIND...<50MPH
 
$$

Franks

534 
WWUS51 KILN 182229
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
629 PM EDT Fri Jun 18 2021

OHC023-057-109-113-182239-
/O.EXP.KILN.SV.W.0022.000000T0000Z-210618T2230Z/
Clark OH-Greene OH-Montgomery OH-Miami OH-
629 PM EDT Fri Jun 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CLARK...
NORTHWESTERN GREENE...NORTHEASTERN MONTGOMERY AND SOUTHEASTERN MIAMI
COUNTIES WILL EXPIRE AT 630 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

A Tornado Watch remains in effect until 1100 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 3974 8390 3973 8413 3982 8427 3988 8425
      3996 8394
TIME...MOT...LOC 2229Z 261DEG 18KT 3984 8404 

$$

Franks

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 3:48 AM EDT	Flash Flood Watch	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 25 more	33 hr
Jun 18, 8:42 AM EDT	Special Weather Statement	ILN	Auglaize	33 min
Jun 18, 9:10 AM EDT	Special Weather Statement	ILN	Auglaize	35 min
Jun 18, 9:12 AM EDT	Special Weather Statement	ILN	Hardin	33 min
Jun 18, 9:38 AM EDT	Special Weather Statement	ILN	Champaign, Logan, Shelby	37 min
Jun 18, 9:45 AM EDT	Special Weather Statement	ILN	Miami, Preble	30 min
Jun 18, 10:03 AM EDT	Special Weather Statement	ILN	Butler, Preble	27 min
Jun 18, 10:13 AM EDT	Special Weather Statement	ILN	Montgomery, Preble	32 min
Jun 18, 10:28 AM EDT	Special Weather Statement	ILN	Butler, Preble	32 min
Jun 18, 10:32 AM EDT	Special Weather Statement	ILN	Hamilton	28 min
Jun 18, 10:57 AM EDT	Special Weather Statement	ILN	Butler, Hamilton, Warren	33 min
Jun 18, 11:26 AM EDT	Special Weather Statement	ILN	Brown, Clermont, Warren	34 min
Jun 18, 11:37 AM EDT	Severe Thunderstorm Warning	ILN	Clermont	25 min
Jun 18, 3:47 PM EDT	Severe Thunderstorm Warning	ILN	Mercer	43 min
Jun 18, 3:59 PM EDT	Tornado Warning Tornado observed	ILN	Mercer	31 min
Jun 18, 4:11 PM EDT	Tornado Warning Tornado observedConsiderable damage threat	ILN	Darke, Mercer	34 min
Jun 18, 4:41 PM EDT	Special Weather Statement	ILN	Shelby	34 min
Jun 18, 4:48 PM EDT	Severe Thunderstorm Warning	ILN	Darke, Miami, Shelby	27 min
Jun 18, 5:09 PM EDT	Tornado Warning	ILN	Darke, Miami, Shelby	36 min
Jun 18, 5:16 PM EDT	Severe Thunderstorm Warning	ILN	Darke	44 min
Jun 18, 5:34 PM EDT	Tornado Warning	ILN	Darke	26 min
Jun 18, 6:00 PM EDT	Tornado Warning	ILN	Darke, Miami, Montgomery, Preble	30 min
Jun 18, 6:11 PM EDT	Tornado Warning	ILN	Darke, Miami, Montgomery, Preble	34 min
Jun 18, 6:39 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Miami, Montgomery	51 min
Jun 18, 6:53 PM EDT	Areal Flood Advisory	ILN	Montgomery	6 hr
Jun 18, 7:00 PM EDT	Special Weather Statement	ILN	Darke	30 min
Jun 18, 7:13 PM EDT	Severe Thunderstorm Warning	ILN	Darke	32 min
Jun 18, 7:19 PM EDT	Areal Flood Advisory	ILN	Greene	6 hr
Jun 18, 7:19 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	41 min
Jun 18, 7:53 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Greene, Warren	52 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.