Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 99, NWS Louisville, KY

December 6, 2021Boyle County, Garrard County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Dec 6, 2021, 1:36 AM EST for Boyle County, Garrard County, Kentucky. It was in force for 24 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
Dec 6, 2021, 1:36 AM EST (06:36 UTC)
Expired
Dec 6, 2021, 2:00 AM EST
In force
24 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Boyle County, KY, Garrard County, KY

The radar

The Louisville radar (KLVX), 114 km from the middle of the area, began a volume at 06:35 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
Dec 6, 1:36 AM ESTTSTM WND DMG1 Nnw Danville, KYTREE DOWN NEAR INTERSECTION OF HIGH STREET AND FIFTH STREET. TIME ESTIMATED FROM RADAR.
Dec 6, 1:39 AM ESTTSTM WND DMG4 Ene Danville, KYTREES DOWN. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.6 hours before the alert went out and 204 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, Cncnati-Daytn, OH at 00:00Z on 2021-12-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 432 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
432 m²/s²
0-3 km storm-relative helicity
509 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

715 
WUUS53 KLMK 060636
SVRLMK
KYC021-079-060700-
/O.NEW.KLMK.SV.W.0099.211206T0636Z-211206T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
136 AM EST Mon Dec 6 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Garrard County in central Kentucky...
  Northeastern Boyle County in central Kentucky...

* Until 200 AM EST.

* At 135 AM EST, a severe thunderstorm was located over Danville,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  northwestern Garrard and northeastern Boyle Counties, including the
  following locations... Marcellus, Caldwell Manor, Bourne, Davis
  Hill, Bryantsville, Faulconer, Stone, Toddville and Bushtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3763 8484 3770 8484 3770 8481 3772 8479
      3772 8473 3773 8473 3772 8470 3773 8469
      3773 8471 3774 8469 3775 8470 3778 8463
      3776 8460 3775 8462 3775 8459 3774 8459
      3773 8458 3775 8454 3777 8454 3772 8450
TIME...MOT...LOC 0635Z 250DEG 39KT 3768 8477 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CG
2 follow-up statements
394 
WWUS53 KLMK 060644
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
144 AM EST Mon Dec 6 2021

KYC021-079-060700-
/O.CON.KLMK.SV.W.0099.000000T0000Z-211206T0700Z/
Garrard KY-Boyle KY-
144 AM EST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EST
FOR NORTHWESTERN GARRARD AND NORTHEASTERN BOYLE COUNTIES...

At 144 AM EST, a severe thunderstorm was located 7 miles northwest of
Lancaster, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Danville, Marcellus, Bourne, Bryantsville, Stone, Toddville, Little
Needmore and Bushtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3765 8475 3770 8474 3772 8473 3773 8473
      3772 8470 3773 8469 3773 8471 3774 8469
      3775 8470 3778 8463 3776 8460 3775 8462
      3775 8459 3774 8459 3773 8458 3775 8454
      3777 8454 3772 8450
TIME...MOT...LOC 0644Z 250DEG 39KT 3772 8465 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CG
255 
WWUS53 KLMK 060656
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
156 AM EST Mon Dec 6 2021

KYC021-079-060705-
/O.EXP.KLMK.SV.W.0099.000000T0000Z-211206T0700Z/
Garrard KY-Boyle KY-
156 AM EST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GARRARD AND
NORTHEASTERN BOYLE COUNTIES WILL EXPIRE AT 200 AM EST...
    
The severe thunderstorm which prompted the warning has weakened and 
is moving out of the warned area. Therefore, the warning will be 
allowed to expire.

LAT...LON 3765 8475 3770 8474 3772 8473 3773 8473
      3772 8470 3773 8469 3773 8471 3774 8469
      3775 8470 3778 8463 3776 8460 3775 8462
      3775 8459 3774 8459 3773 8458 3775 8454
      3777 8454 3772 8450
TIME...MOT...LOC 0655Z 250DEG 39KT 3775 8455 

$$

CG

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 5, 7:42 PM ESTSpecial Weather StatementLMKBarren18 min
Dec 5, 7:45 PM ESTSpecial Weather StatementLMKEdmonson15 min
Dec 5, 8:16 PM ESTSpecial Weather StatementLMKHart29 min
Dec 5, 8:57 PM ESTSpecial Weather StatementLMKGreen33 min
Dec 5, 9:30 PM ESTSpecial Weather StatementLMKGreen, Taylor30 min
Dec 5, 10:26 PM ESTSpecial Weather StatementLMKButler, Grayson34 min
Dec 5, 11:06 PM ESTSpecial Weather StatementLMKEdmonson, Grayson, Hart, Larue54 min
Dec 6, 1:04 AM ESTSevere Thunderstorm WarningLMKBoyle, Marion26 min
Dec 6, 2:02 AM ESTSpecial Weather StatementLMKHancock28 min
Dec 6, 3:30 AM ESTSpecial Weather StatementLMKHenry, Shelby30 min
Dec 6, 4:18 AM ESTSpecial Weather StatementLMKFayette, Scott, Woodford27 min
Dec 6, 4:27 AM ESTSpecial Weather StatementLMKHart, Larue33 min
Dec 6, 4:48 AM ESTSpecial Weather StatementLMKBourbon, Clark, Fayette, Nicholas42 min
Dec 6, 4:59 AM ESTSpecial Weather StatementLMKMarion31 min
Dec 6, 5:13 AM ESTSpecial Weather StatementLMKJessamine, Mercer32 min
Dec 6, 5:43 AM ESTTornado WarningLMKLogan17 min
Dec 6, 5:47 AM ESTTornado WarningLMKLogan28 min
Dec 6, 6:04 AM ESTSpecial Weather StatementLMKSimpson26 min
Dec 6, 6:15 AM ESTSpecial Weather StatementLMKWarren30 min
Dec 6, 7:21 AM ESTSpecial Weather StatementLMKCumberland24 min
Dec 6, 7:23 AM ESTSpecial Weather StatementLMKClinton37 min
Dec 6, 7:46 AM ESTSpecial Weather StatementLMKClinton14 min
Dec 6, 8:42 AM ESTAreal Flood AdvisoryLMKTaylor3 hr
Dec 6, 10:36 AM ESTAreal Flood AdvisoryLMKBoyle, Garrard, Marion3 hr
Dec 6, 11:54 AM ESTRiver Flood WarningLMKBourbon23 hr
Dec 6, 1:11 PM ESTRiver Flood AdvisoryLMKFranklin32 hr

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.