Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 4, NWS Wilmington, OH

March 25, 2021Boone County, Carroll County, Kentucky; 4 counties in Indiana

NWS Wilmington, OH issued this severe thunderstorm warning at Mar 25, 2021, 11:41 PM EDT for Boone County, Carroll County, Kentucky; 4 counties in Indiana. It was in force for 34 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: Mar 25, 2021, 11:41 PM EDT (03:41 UTC)
Expired: Mar 26, 2021, 12:15 AM EDT
In force: 34 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Dearborn County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Boone County, KY, Carroll County, KY

The radar

The Louisville radar (KLVX), 122 km from the middle of the area, began a volume at 03:40 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 00:00Z, 3.7 hours before the alert went out and 127 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: 1 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 290 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

964 
WUUS51 KILN 260341
SVRILN
INC029-115-137-155-KYC015-041-260415-
/O.NEW.KILN.SV.W.0004.210326T0341Z-210326T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
1141 PM EDT Thu Mar 25 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Ohio County in southeastern Indiana...
  Southeastern Ripley County in southeastern Indiana...
  Southern Dearborn County in southeastern Indiana...
  Switzerland County in southeastern Indiana...
  Western Carroll County in northern Kentucky...
  Northern Boone County in northern Kentucky...

* Until 1215 AM EDT.

* At 1140 PM EDT, severe thunderstorms were located along a line
  extending from near Versailles to near Carrollton, moving northeast
  at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lawrenceburg, Greendale, Carrollton, Aurora, Rising Sun, Hidden
  Valley, Milan, Vevay, Dillsboro, Shawnee, Moores Hill, Florence,
  Guilford, Wilmington, Pleasant, French, Hartford, Fairview, Ghent
  and Patriot.

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 3874 8526 3869 8520 3892 8520 3892 8526
      3910 8520 3920 8482 3889 8481 3888 8478
      3883 8483 3879 8481 3880 8489 3878 8494
      3878 8500 3876 8502 3874 8501 3866 8509
      3867 8527 3874 8533
TIME...MOT...LOC 0340Z 230DEG 49KT 3907 8520 3869 8527 

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

Hatzos

2 follow-up statements

795 
WWUS51 KILN 260353
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
1153 PM EDT Thu Mar 25 2021

INC137-260402-
/O.CAN.KILN.SV.W.0004.000000T0000Z-210326T0415Z/
Ripley IN-
1153 PM EDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RIPLEY COUNTY IS
CANCELLED...

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

LAT...LON 3874 8526 3869 8520 3888 8520 3893 8513
      3913 8510 3920 8482 3889 8481 3888 8478
      3883 8483 3879 8481 3880 8489 3878 8494
      3878 8500 3876 8502 3874 8501 3866 8509
      3867 8527 3874 8533
TIME...MOT...LOC 0352Z 238DEG 42KT 3911 8504 3877 8513 

$$

INC029-115-155-KYC015-041-260415-
/O.CON.KILN.SV.W.0004.000000T0000Z-210326T0415Z/
Ohio IN-Dearborn IN-Switzerland IN-Carroll KY-Boone KY-
1153 PM EDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR OHIO...SOUTHERN DEARBORN...SWITZERLAND...WESTERN CARROLL AND
NORTHERN BOONE COUNTIES...

At 1152 PM EDT, severe thunderstorms were located along a line 
extending from Moores Hill to Vevay, moving northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lawrenceburg, Greendale, Carrollton, Aurora, Rising Sun, Hidden
Valley, Vevay, Dillsboro, Shawnee, Moores Hill, Florence, Guilford,
Wilmington, Pleasant, Manchester, French, Hartford, Fairview, Ghent
and Patriot.

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 3874 8526 3869 8520 3888 8520 3893 8513
      3913 8510 3920 8482 3889 8481 3888 8478
      3883 8483 3879 8481 3880 8489 3878 8494
      3878 8500 3876 8502 3874 8501 3866 8509
      3867 8527 3874 8533
TIME...MOT...LOC 0352Z 238DEG 42KT 3911 8504 3877 8513 

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

Hatzos

107 
WWUS51 KILN 260413
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
1213 AM EDT Fri Mar 26 2021

INC029-115-155-KYC015-041-260422-
/O.EXP.KILN.SV.W.0004.000000T0000Z-210326T0415Z/
Ohio IN-Dearborn IN-Switzerland IN-Carroll KY-Boone KY-
1213 AM EDT Fri Mar 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR OHIO...SOUTHERN DEARBORN...
SWITZERLAND...WESTERN CARROLL AND NORTHERN BOONE COUNTIES WILL EXPIRE
AT 1215 AM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

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.

Remember, a Severe Thunderstorm Warning still remains in effect for 
Northeastern Dearborn County, Northern Boone County, Hamilton 
County, and Southeastern Butler County until 1245 AM.

LAT...LON 3874 8526 3869 8520 3888 8520 3893 8513
      3913 8510 3920 8482 3889 8481 3888 8478
      3883 8483 3879 8481 3880 8489 3878 8494
      3878 8500 3876 8502 3874 8501 3866 8509
      3867 8527 3874 8533
TIME...MOT...LOC 0412Z 230DEG 49KT 3928 8478 3894 8487 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 25, 8:05 PM EDT	Severe Thunderstorm Warning	ILN	Carroll, Gallatin, Owen	40 min
Mar 25, 8:28 PM EDT	Severe Thunderstorm Warning	ILN	Boone	26 min
Mar 25, 11:01 PM EDT	Severe Thunderstorm Warning	ILN	Bracken, Mason, Pendleton, Robertson	21 min
Mar 25, 11:20 PM EDT	Special Weather Statement	ILN	Carroll	25 min
Mar 25, 11:37 PM EDT	Special Weather Statement	ILN	Boone, Carroll, Gallatin	38 min
Mar 26, 12:11 AM EDT	Severe Thunderstorm Warning	ILN	Boone	34 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2021 Severe Thunderstorm Warnings in Kentucky, 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.