Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Wilmington, OH

April 9, 20214 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 9, 2021, 4:07 PM EDT for 4 counties in Ohio. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 9, 2021, 4:07 PM EDT (20:07 UTC)
Expired: Apr 9, 2021, 4:30 PM EDT
In force: 23 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Darke County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH

The radar

The Cincinnati radar (KILN), 74 km from the middle of the area, began a volume at 20:07 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.1 hours before the alert went out and 74 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: 8 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1644 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

045 
WUUS51 KILN 092007
SVRILN
OHC037-109-113-135-092030-
/O.NEW.KILN.SV.W.0007.210409T2007Z-210409T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
407 PM EDT Fri Apr 9 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northeastern Preble County in west central Ohio...
  Southeastern Darke County in west central Ohio...
  Northern Montgomery County in west central Ohio...
  Miami County in west central Ohio...

* Until 430 PM EDT.

* At 407 PM EDT, a severe thunderstorm was located over Lewisburg,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Dayton, Huber Heights, Troy, Trotwood, Vandalia, Englewood, Tipp
  City, Eaton, New Carlisle, West Milton, Arcanum, Lewisburg, West
  Alexandria, Pleasant Hill, Brown, Clayton, Union, Brookville,
  Phillipsburg and Eldorado.

This includes the following Interstates...
 I-70 in Ohio between mile markers 8 and 40.
 I-75 in Ohio between mile markers 59 and 80.

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 4018 8408 4012 8403 3987 8405 3971 8462
      3992 8472
TIME...MOT...LOC 2007Z 249DEG 47KT 3985 8455 

HAIL...<.75IN
WIND...60MPH
 
$$

Hickman

2 follow-up statements

219 
WWUS51 KILN 092015
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
415 PM EDT Fri Apr 9 2021

OHC037-109-113-135-092030-
/O.CON.KILN.SV.W.0007.000000T0000Z-210409T2030Z/
Preble OH-Darke OH-Montgomery OH-Miami OH-
415 PM EDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR NORTHEASTERN PREBLE...SOUTHEASTERN DARKE...NORTHERN MONTGOMERY
AND MIAMI COUNTIES...

At 415 PM EDT, a severe thunderstorm was located near Lewisburg,
moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Dayton, Huber Heights, Troy, Trotwood, Vandalia, Englewood, Tipp
City, New Carlisle, West Milton, Arcanum, Lewisburg, West Alexandria,
Pleasant Hill, Brown, Clayton, Union, Brookville, Phillipsburg,
Verona and West Manchester.

This includes the following Interstates...
 I-70 in Ohio between mile markers 11 and 40.
 I-75 in Ohio between mile markers 60 and 80.

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 4018 8408 4012 8403 3987 8405 3973 8457
      3994 8467
TIME...MOT...LOC 2015Z 248DEG 46KT 3988 8444 

HAIL...<.75IN
WIND...60MPH
 
$$

Hickman

597 
WWUS51 KILN 092029
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
429 PM EDT Fri Apr 9 2021

OHC037-109-113-135-092039-
/O.EXP.KILN.SV.W.0007.000000T0000Z-210409T2030Z/
Preble OH-Darke OH-Montgomery OH-Miami OH-
429 PM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PREBLE...
SOUTHEASTERN DARKE...NORTHERN MONTGOMERY AND MIAMI COUNTIES WILL
EXPIRE AT 430 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 gusty
winds are still possible with this thunderstorm.

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 4018 8408 4012 8403 3987 8405 3973 8457
      3994 8467
TIME...MOT...LOC 2029Z 249DEG 47KT 3994 8422 

$$

Hickman

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 3:58 PM EDT	Special Weather Statement	ILN	Preble	32 min
Apr 9, 4:25 PM EDT	Special Weather Statement	ILN	Butler, Montgomery	35 min
Apr 9, 4:29 PM EDT	Special Weather Statement	ILN	Miami	31 min
Apr 9, 4:34 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	26 min
Apr 9, 4:43 PM EDT	Special Weather Statement	ILN	Champaign, Logan, Union	32 min
Apr 9, 4:52 PM EDT	Special Weather Statement	ILN	Champaign, Clark	23 min
Apr 9, 4:59 PM EDT	Special Weather Statement	ILN	Clark	31 min
Apr 9, 5:15 PM EDT	Special Weather Statement	ILN	Champaign, Union	30 min
Apr 9, 5:24 PM EDT	Special Weather Statement	ILN	Clark, Greene, Madison	36 min
Apr 9, 5:43 PM EDT	Special Weather Statement	ILN	Delaware, Union	32 min
Apr 9, 5:52 PM EDT	Special Weather Statement	ILN	Franklin, Madison	38 min
Apr 9, 6:14 PM EDT	Special Weather Statement	ILN	Delaware, Union	31 min
Apr 9, 6:23 PM EDT	Special Weather Statement	ILN	Franklin, Licking	37 min
Apr 9, 6:50 PM EDT	Special Weather Statement	ILN	Montgomery	25 min
Apr 9, 6:59 PM EDT	Special Weather Statement	ILN	Licking	31 min
Apr 9, 7:14 PM EDT	Special Weather Statement	ILN	Miami	31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.