Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 16, NWS Louisville, KY

March 25, 20214 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Mar 25, 2021, 9:12 PM CDT for 4 counties in Kentucky. It was in force for 33 min. 5 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
Mar 25, 2021, 9:12 PM CDT (02:12 UTC)
Expired
Mar 25, 2021, 9:45 PM CDT
In force
33 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
70.0 mph

Counties Grayson County, KY, Hardin County, KY, Hart County, KY, Larue County, KY

The radar

The Louisville radar (KLVX), 56 km from the middle of the area, began a volume at 02:13 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

TimeReportWhereRemark
Mar 25, 9:15 PM CDTTSTM WND DMG4 E Clarkson, KYROOF OFF HOUSE AND WINDOWS BLOWN OUT. ATTACHED GARAGE DAMAGED. OUTBUILDING DAMAGED. OLD BARN DAMAGED. POWER LINES AND POLES DOWN.
Mar 25, 9:16 PM CDTTSTM WND DMG4 S Big Clifty, KYSEVERAL LARGE TREES DOWN.
Mar 25, 9:16 PM CDTTORNADO4 Ese Clarkson, KY1 MILE LONG EF-0 TORNADO WITH MAXIMUM WIDTH OF 40 YARDS. BRIEF TORNADO THAT CAUSED DAMAGE IN THE 3900 BLOCK OF MILLERSTOWN ROAD. ALSO OF INTEREST WAS A VERY NOTICEABLE GROUND SWIRL...FROM DRONE FOOTAGE...IN OPEN FARMLAND.
Mar 25, 9:18 PM CDTTSTM WND DMG5 Nw Millerstown, KYNUMEROUS POWER OUTAGES IN THE MILLERSTOWN AREA OF GRAYSON COUNTY.
Mar 25, 9:35 PM CDTTSTM WND DMG3 Ene Glendale, KYBROADCAST MEDIA REPORTED DAMAGE TO A HOUSE (ROOF BLOW AWAY) AND HEAVY DAMAGE TO A MOBILE HOME BOTH ALONG FIRST UNION CHURCH RD. 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.

IssuedProductOfficeLasted
Mar 25, 3:48 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.2 hours before the alert went out and 157 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2021-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 290 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2021-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 657 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
290 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
615 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
657 m²/s²
0-3 km storm-relative helicity
631 m²/s²
Significant tornado parameter
1.0
Supercell composite
7.4

Open this sounding in Storm Lab

The text

As transmitted.

012 
WUUS53 KLMK 260212
SVRLMK
KYC085-093-099-123-260245-
/O.NEW.KLMK.SV.W.0016.210326T0212Z-210326T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
1012 PM EDT Thu Mar 25 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Larue County in central Kentucky...
  North central Hart County in central Kentucky...
  East central Grayson County in central Kentucky...
  South central Hardin County in central Kentucky...

* Until 1045 PM EDT/945 PM CDT/.

* At 1012 PM EDT/912 PM CDT/, a severe thunderstorm was located 7
  miles east of Leitchfield, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Leitchfield, Clarkson, Upton, Sonora, Rock Creek, Seven Corners,
  Peonia, Flint Hill, Snap and Glendale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EDT/1100 PM CDT/ for
central Kentucky.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3739 8622 3751 8626 3766 8587 3744 8578
TIME...MOT...LOC 0212Z 251DEG 36KT 3748 8615 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...70MPH
 
$$

JML
2 follow-up statements
419 
WWUS53 KLMK 260233
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
1033 PM EDT Thu Mar 25 2021

KYC085-260243-
/O.CAN.KLMK.SV.W.0016.000000T0000Z-210326T0245Z/
Grayson KY-
1033 PM EDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GRAYSON 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 midnight EDT/1100 PM CDT/ for
central Kentucky.

LAT...LON 3742 8603 3743 8603 3743 8604 3744 8604
      3744 8605 3745 8605 3745 8606 3759 8604
      3766 8587 3744 8578 3741 8604
TIME...MOT...LOC 0233Z 251DEG 36KT 3755 8590 

$$

KYC093-099-123-260245-
/O.CON.KLMK.SV.W.0016.000000T0000Z-210326T0245Z/
Larue KY-Hart KY-Hardin KY-
1033 PM EDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM
EDT/945 PM CDT/ FOR SOUTHWESTERN LARUE...NORTH CENTRAL HART AND SOUTH
CENTRAL HARDIN COUNTIES...

At 1033 PM EDT/933 PM CDT/, a severe thunderstorm was located 8 miles
west of Hodgenville, moving east at 40 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Upton, Sonora, Spurrier, Talley, Seven Corners, White Mills, Maxine,
Flint Hill, White Mills Junction and Glendale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EDT/1100 PM CDT/ for
central Kentucky.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3742 8603 3743 8603 3743 8604 3744 8604
      3744 8605 3745 8605 3745 8606 3759 8604
      3766 8587 3744 8578 3741 8604
TIME...MOT...LOC 0233Z 251DEG 36KT 3755 8590 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...70MPH
 
$$

JML
380 
WWUS53 KLMK 260243
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
1043 PM EDT Thu Mar 25 2021

KYC093-099-123-260253-
/O.EXP.KLMK.SV.W.0016.000000T0000Z-210326T0245Z/
Larue KY-Hart KY-Hardin KY-
1043 PM EDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LARUE...NORTH
CENTRAL HART AND SOUTH CENTRAL HARDIN COUNTIES WILL EXPIRE AT 1045 PM
EDT/945 PM CDT/...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until midnight EDT/1100 PM CDT/ for
central Kentucky.

LAT...LON 3742 8603 3743 8603 3743 8604 3744 8604
      3744 8605 3745 8605 3745 8606 3759 8604
      3766 8587 3744 8578 3741 8604
TIME...MOT...LOC 0243Z 251DEG 36KT 3758 8579 

$$

JML

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 25, 7:03 PM CDTSevere Thunderstorm WarningLMKHenry12 min
Mar 25, 7:27 PM CDTSpecial Weather StatementLMKBullitt, Spencer33 min
Mar 25, 8:08 PM CDTTornado WarningLMKButler, Grayson, Ohio37 min
Mar 25, 8:16 PM CDTSpecial Weather StatementLMKButler29 min
Mar 25, 8:28 PM CDTSpecial Weather StatementLMKHancock32 min
Mar 25, 8:44 PM CDTSpecial Weather StatementLMKBreckinridge31 min
Mar 25, 8:45 PM CDTSpecial Weather StatementLMKGreen, Taylor30 min
Mar 25, 8:46 PM CDTSpecial Weather StatementLMKButler, Grayson29 min
Mar 25, 9:14 PM CDTSpecial Weather StatementLMKEdmonson, Hart31 min
Mar 25, 9:21 PM CDTTornado WarningLMKGrayson, Hardin, Larue24 min
Mar 25, 9:38 PM CDTSpecial Weather StatementLMKHarrison37 min
Mar 25, 9:42 PM CDTSevere Thunderstorm WarningLMKHardin, Hart, Larue, Nelson33 min
Mar 25, 9:45 PM CDTTornado WarningLMKHardin, Larue, Nelson30 min
Mar 25, 9:57 PM CDTTornado WarningLMKClinton15 min
Mar 25, 9:59 PM CDTSevere Thunderstorm WarningLMKHarrison16 min
Mar 25, 10:01 PM CDTSevere Thunderstorm WarningLMKBoyle, Green, Larue, Marion, Mercer, Nelson and 2 more29 min
Mar 25, 10:03 PM CDTTornado WarningLMKMarion, Nelson, Washington27 min
Mar 25, 10:09 PM CDTSpecial Weather StatementLMKTrimble36 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021Every 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.