Alert archive / Ohio / Tornado Warnings in 2021

Tornado Warning 8, NWS Wilmington, OH

June 18, 2021Butler County, Montgomery County, Warren County, Ohio

NWS Wilmington, OH issued this tornado warning at Jun 18, 2021, 8:46 PM EDT for Butler County, Montgomery County, Warren County, Ohio. It was in force for 29 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, 8:46 PM EDT (00:46 UTC)
Expired: Jun 18, 2021, 9:15 PM EDT
In force: 29 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Observed
Hail: 0.0 in

Counties Butler County, OH, Montgomery County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 53 km from the middle of the area, began a volume at 00:49 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, 9:04 PM EDT	TSTM WND DMG	3 Nnw Mason, OH	TREE DOWNED ACROSS BREWER ROAD NEAR THE INTERSECTION WITH CROOKED TREE DRIVE. TIME ESTIMATED FROM RADAR.
Jun 18, 9:11 PM EDT	TSTM WND DMG	Wnw Mason, OH	HEALTHY TREE SNAPPED AND FELL ON TOP OF A CAR. TIME ESTIMATED FROM RADAR DATA.

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 00:00Z, 0.8 hours before the alert went out and 54 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: 2257 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1236 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 17.6

Open this sounding in Storm Lab

The text

As transmitted.

040 
WFUS51 KILN 190046
TORILN
OHC017-113-165-190115-
/O.NEW.KILN.TO.W.0008.210619T0046Z-210619T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington OH
846 PM EDT Fri Jun 18 2021

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Eastern Butler County in southwestern Ohio...
  Northwestern Warren County in southwestern Ohio...
  Southwestern Montgomery County in west central Ohio...

* Until 915 PM EDT.
    
* At 845 PM EDT, a tornado-producing storm was located near
  Middletown, moving southeast at 30 mph.

  HAZARD...Damaging tornado.

  SOURCE...Radar confirmed tornado. Radar shows tornado debris in 
           the air.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Middletown, Mason, Lebanon, Springboro, Monroe, Trenton, Franklin,
  Carlisle, South Middletown, Hunter, Olde West Chester, Four
  Bridges, Wetherington, Jacksonburg, Hughes, Hageman, State Route 63
  at State Route 741, Maud, Pekin and Poast Town Heights.

This includes I-75 in Ohio between mile markers 21 and 37.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

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 3957 8448 3961 8448 3964 8443 3946 8412
      3931 8439 3957 8454
TIME...MOT...LOC 0045Z 329DEG 27KT 3956 8445 

TORNADO...OBSERVED
HAIL...0.00IN

$$

Campbell

3 follow-up statements

377 
WWUS51 KILN 190052
SVSILN

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

OHC113-190102-
/O.CAN.KILN.TO.W.0008.000000T0000Z-210619T0115Z/
Montgomery OH-
852 PM EDT Fri Jun 18 2021

...THE TORNADO WARNING FOR SOUTHWESTERN MONTGOMERY COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 3953 8446 3954 8444 3955 8441 3946 8412
      3931 8439 3952 8450
TIME...MOT...LOC 0052Z 329DEG 27KT 3951 8441 

$$

OHC017-165-190115-
/O.CON.KILN.TO.W.0008.000000T0000Z-210619T0115Z/
Butler OH-Warren OH-
852 PM EDT Fri Jun 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR EASTERN
BUTLER AND WEST CENTRAL WARREN COUNTIES...
    
At 852 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Middletown, moving southeast at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Middletown, Mason, Lebanon, Monroe, Trenton, South Middletown,
Hunter, Four Bridges, Wetherington, Olde West Chester, Hughes,
Hageman, State Route 63 at State Route 741, Maud and Genntown.

This includes I-75 in Ohio between mile markers 21 and 34.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3953 8446 3954 8444 3955 8441 3946 8412
      3931 8439 3952 8450
TIME...MOT...LOC 0052Z 329DEG 27KT 3951 8441 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Campbell

233 
WWUS51 KILN 190058
SVSILN

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

OHC017-165-190115-
/O.CON.KILN.TO.W.0008.000000T0000Z-210619T0115Z/
Butler OH-Warren OH-
858 PM EDT Fri Jun 18 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHEASTERN BUTLER AND WEST CENTRAL WARREN COUNTIES...
    
At 858 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Monroe, moving southeast at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Middletown, Mason, Lebanon, Monroe, Four Bridges, Wetherington, Olde
West Chester, Hughes, Hageman, State Route 63 at State Route 741 and
Maud.

This includes I-75 in Ohio between mile markers 21 and 31.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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 3948 8440 3944 8416 3931 8439 3945 8445
TIME...MOT...LOC 0058Z 307DEG 48KT 3943 8438 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Campbell

171 
WWUS51 KILN 190108
SVSILN

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

OHC017-165-190117-
/O.EXP.KILN.TO.W.0008.000000T0000Z-210619T0115Z/
Butler OH-Warren OH-
908 PM EDT Fri Jun 18 2021

...THE TORNADO WARNING FOR SOUTHEASTERN BUTLER AND WEST CENTRAL
WARREN COUNTIES WILL EXPIRE AT 915 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However hail and 
gusty winds are still possible with this thunderstorm.

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

Please report previous tornadoes, 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 3948 8440 3944 8416 3931 8439 3945 8445
TIME...MOT...LOC 0107Z 329DEG 27KT 3938 8434 

$$

Campbell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 8:10 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Hamilton	50 min
Jun 18, 8:11 PM EDT	Flash Flood Warning	ILN	Greene, Montgomery	3 hr
Jun 18, 8:11 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	34 min
Jun 18, 8:14 PM EDT	Severe Thunderstorm Warning	ILN	Montgomery, Preble	31 min
Jun 18, 8:18 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Greene, Warren	42 min
Jun 18, 8:33 PM EDT	Tornado Warning	ILN	Greene, Montgomery, Warren	27 min
Jun 18, 8:39 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Hamilton, Montgomery, Preble, Warren	36 min
Jun 18, 8:51 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Highland	39 min
Jun 18, 9:09 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Clinton, Highland	51 min
Jun 18, 9:11 PM EDT	Tornado Warning	ILN	Hamilton	34 min
Jun 18, 9:15 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Butler, Clermont, Clinton, Hamilton, Warren	45 min
Jun 18, 9:16 PM EDT	Flash Flood Warning	ILN	Clinton, Greene, Warren	3 hr
Jun 18, 9:26 PM EDT	Flash Flood Warning	ILN	Butler, Montgomery, Warren	3 hr
Jun 18, 9:32 PM EDT	Flash Flood Warning	ILN	Clinton, Highland, Pike	3 hr
Jun 18, 9:39 PM EDT	Areal Flood Advisory	ILN	Hamilton	3 hr
Jun 18, 9:49 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Clermont, Pike, Scioto	56 min
Jun 18, 10:34 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Scioto	41 min
Jun 18, 10:58 PM EDT	Special Weather Statement	ILN	Butler, Warren	32 min
Jun 18, 11:03 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Clermont, Hamilton, Warren	42 min
Jun 18, 11:15 PM EDT	Areal Flood Warning	ILN	Greene, Montgomery	6 hr
Jun 18, 11:21 PM EDT	River Flood Warning	ILN	Greene, Warren	20 hr
Jun 18, 11:43 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Clinton, Highland, Warren	19 min
Jun 19, 12:01 AM EDT	Severe Thunderstorm Warning	ILN	Darke	27 min
Jun 19, 12:12 AM EDT	Areal Flood Advisory	ILN	Warren	3 hr
Jun 19, 12:19 AM EDT	Special Weather Statement	ILN	Miami	26 min
Jun 19, 12:23 AM EDT	Special Weather Statement	ILN	Preble	37 min
Jun 19, 12:33 AM EDT	Areal Flood Warning	ILN	Clinton, Greene, Warren	6 hr
Jun 19, 1:12 AM EDT	Areal Flood Advisory	ILN	Darke, Preble	2 hr
Jun 19, 1:55 AM EDT	Special Weather Statement	ILN	Montgomery	35 min
Jun 19, 2:33 AM EDT	Areal Flood Advisory	ILN	Butler, Clinton, Darke, Greene, Montgomery, Preble and 1 more	3 hr
Jun 19, 3:04 AM EDT	Flash Flood Warning	ILN	Clinton, Warren	2 hr
Jun 19, 3:28 AM EDT	Areal Flood Advisory	ILN	Brown, Clinton, Highland	3 hr
Jun 19, 6:39 AM EDT	Areal Flood Advisory	ILN	Hamilton	19 min
Jun 19, 6:54 AM EDT	Flash Flood Warning	ILN	Hamilton	13 hr
Jun 19, 8:12 AM EDT	River Flood Warning	ILN	Hamilton	4 hr
Jun 19, 8:16 AM EDT	Areal Flood Advisory	ILN	Butler, Hamilton	5 hr
Jun 19, 8:46 AM EDT	Special Weather Statement	ILN	Clermont	44 min
Jun 19, 9:08 AM EDT	Areal Flood Advisory	ILN	Brown, Clermont, Highland	3 hr
Jun 19, 9:28 AM EDT	River Flood Warning	ILN	Warren	10 hr
Jun 19, 9:29 AM EDT	River Flood Warning	ILN	Clermont, Hamilton	24 hr
Jun 19, 1:18 PM EDT	River Flood Advisory	ILN	Hamilton	9 hr

Nearby

Tornado Warnings in Ohio, 2021 Every tornado warning in 2021 Tornadoes 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.