Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Louisville, KY

December 6, 2021Boyle County, Marion County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Dec 6, 2021, 1:04 AM EST for Boyle County, Marion County, Kentucky. It was in force for 26 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, 1:04 AM EST (06:04 UTC)
Expired
Dec 6, 2021, 1:30 AM EST
In force
26 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Boyle County, KY, Marion County, KY

The radar

The Louisville radar (KLVX), 91 km from the middle of the area, began a volume at 06:08 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

TimeReportWhereRemark
Dec 6, 1:05 AM ESTTSTM WND DMG3 Ene Lebanon, KYTREE PARTIALLY BLOCKING ROAD AT SHORT LINE PIKE NEAR 68E. TIME ESTIMATED FROM RADAR. ALSO REPORTED A TREE ACROSS THE ROAD AT HOOD LANE OFF FAIRGROUNDS ROAD...SIMILAR TIME.
Dec 6, 1:27 AM ESTTSTM WND DMG1 W Parksville, KYTREES DOWN ON TANK POND ROAD. TIME APPROXIMATED FROM RADAR.

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 6.1 hours before the alert went out and 213 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 2021-12-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 666 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 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 346 square meters per square second.193958Sfc1 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
666 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
346 m²/s²
0-3 km storm-relative helicity
484 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.4

Open this sounding in Storm Lab

The text

As transmitted.

444 
WUUS53 KLMK 060604
SVRLMK
KYC021-155-060630-
/O.NEW.KLMK.SV.W.0098.211206T0604Z-211206T0630Z/

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

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Southeastern Marion County in central Kentucky...
  Western Boyle County in central Kentucky...

* Until 130 AM EST.

* At 104 AM EST, a severe thunderstorm was located over Lebanon,
  moving northeast at 50 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
  southeastern Marion and western Boyle Counties, including the
  following locations... Brumfield, Belltown, Parksville, Forkland,
  Poplar Corner, Aliceton, Calvary, Mitchellsburg, Greenbriar and
  Gravel Switch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3756 8484 3754 8500 3755 8500 3755 8503
      3754 8504 3753 8504 3747 8532 3757 8531
      3763 8514 3763 8503 3767 8503 3768 8500
      3769 8491
TIME...MOT...LOC 0604Z 242DEG 43KT 3756 8521 

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

$$

CG
1 follow-up statement
187 
WWUS53 KLMK 060615
SVSLMK

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

KYC021-155-060630-
/O.CON.KLMK.SV.W.0098.000000T0000Z-211206T0630Z/
Marion KY-Boyle KY-
115 AM EST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM EST
FOR EAST CENTRAL MARION AND WESTERN BOYLE COUNTIES...

At 115 AM EST, a severe thunderstorm was located 9 miles southeast of
Springfield, moving northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Brumfield, Mitchellsburg, Parksville, Gravel Switch, Forkland, Riley
and Aliceton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3756 8484 3754 8500 3755 8500 3755 8503
      3754 8504 3753 8504 3753 8515 3761 8514
      3763 8509 3763 8503 3767 8503 3768 8500
      3769 8491
TIME...MOT...LOC 0615Z 242DEG 43KT 3762 8506 

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

$$

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, 1:36 AM ESTSevere Thunderstorm WarningLMKBoyle, Garrard24 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.