Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Wilmington, OH

June 18, 20214 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 18, 2021, 9:09 PM EDT for 4 counties in Ohio. It was in force for 51 min. 3 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, 9:09 PM EDT (01:09 UTC)
Expired: Jun 18, 2021, 10:00 PM EDT
In force: 51 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Adams County, OH, Brown County, OH, Clinton County, OH, Highland County, OH

The radar

The Cincinnati radar (KILN), 33 km from the middle of the area, began a volume at 01:08 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, 9:10 PM EDT	TSTM WND DMG	1 Nne Blanchester, OH	LARGE TREES SNAPPED AT BASE ON SECOND CREEK ROAD. TIME ESTIMATED FROM RADAR.
Jun 18, 9:11 PM EDT	TSTM WND DMG	4 Nne Lynchburg, OH	LARGE TREE UPROOTED. TIME ESTIMATED BY RADAR.
Jun 18, 9:46 PM EDT	TSTM WND DMG	Belfast, OH	TREES AND POWER LINES REPORTED DOWN. TIME ESTIMATED FROM RADAR.

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
Jun 18, 9:09 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.2 hours before the alert went out and 34 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.

513 
WUUS51 KILN 190109
SVRILN
OHC001-015-027-071-190200-
/O.NEW.KILN.SV.W.0036.210619T0109Z-210619T0200Z/

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

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northern Brown County in southwestern Ohio...
  Northwestern Adams County in southwestern Ohio...
  Southern Clinton County in southwestern Ohio...
  Highland County in southwestern Ohio...

* Until 1000 PM EDT.

* At 909 PM EDT, a severe thunderstorm was located over Lynchburg,
  moving southeast at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Hillsboro, Blanchester, Mount Orab, Peebles, Lynchburg, New Vienna,
  Winchester, Marshall, Sardinia, Seaman, Belfast, Rocky Fork Point,
  Russell, New Market, Emerald, Martinsville, Mowrystown,
  Fayetteville, Midland and Cherry Fork.

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 southwestern
Ohio.

LAT...LON 3899 8402 3925 8399 3931 8400 3935 8375
      3934 8359 3898 8334 3882 8361
TIME...MOT...LOC 0109Z 323DEG 28KT 3923 8378 

HAIL...1.00IN
WIND...70MPH
 
$$

Hickman

2 follow-up statements

673 
WWUS51 KILN 190135
SVSILN

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

OHC027-190145-
/O.CAN.KILN.SV.W.0036.000000T0000Z-210619T0200Z/
Clinton OH-
935 PM EDT Fri Jun 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CLINTON COUNTY IS
CANCELLED...
    
The severe 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.

A Severe Thunderstorm Watch remains in effect until 300 AM EDT for
southwestern Ohio.

LAT...LON 3899 8402 3924 8399 3923 8384 3922 8384
      3922 8375 3934 8359 3898 8334 3882 8361
TIME...MOT...LOC 0135Z 323DEG 28KT 3907 8362 

$$

OHC001-015-071-190200-
/O.CON.KILN.SV.W.0036.000000T0000Z-210619T0200Z/
Brown OH-Adams OH-Highland OH-
935 PM EDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR CENTRAL BROWN...NORTHWESTERN ADAMS AND HIGHLAND COUNTIES...

At 935 PM EDT, a severe thunderstorm was located near Belfast, moving
southeast at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vehicles is possible. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Hillsboro, Mount Orab, Peebles, Winchester, Marshall, Sardinia,
Seaman, Belfast, Rocky Fork Point, Russell, New Market, Emerald,
Mowrystown, Fayetteville, Cherry Fork, St. Martin, Chasetown,
Danville in Highland County, Samantha and May Hill.

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 southwestern
Ohio.

LAT...LON 3899 8402 3924 8399 3923 8384 3922 8384
      3922 8375 3934 8359 3898 8334 3882 8361
TIME...MOT...LOC 0135Z 323DEG 28KT 3907 8362 

HAIL...1.00IN
WIND...70MPH
 
$$

Hickman

571 
WWUS51 KILN 190154
SVSILN

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

OHC001-015-071-190203-
/O.EXP.KILN.SV.W.0036.000000T0000Z-210619T0200Z/
Brown OH-Adams OH-Highland OH-
954 PM EDT Fri Jun 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BROWN...NORTHWESTERN
ADAMS AND HIGHLAND COUNTIES WILL EXPIRE AT 1000 PM EDT...
        
The storms which prompted the warning were moving out of the area.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with lingering thunderstorms.

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

A Severe Thunderstorm Watch remains in effect until 300 AM EDT for
southwestern 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 3899 8402 3924 8399 3923 8384 3922 8384
      3922 8375 3934 8359 3898 8334 3882 8361
TIME...MOT...LOC 0153Z 323DEG 28KT 3897 8352 

$$

Hickman

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, 8:46 PM EDT	Tornado Warning Tornado observed	ILN	Butler, Montgomery, Warren	29 min
Jun 18, 8:51 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Highland	39 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

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.