Alert archive / Kentucky / Tornado Warnings in 2021

Tornado Warning 12, NWS Louisville, KY

December 6, 2021Logan County, Kentucky

NWS Louisville, KY issued this tornado warning at Dec 6, 2021, 4:43 AM CST for Logan County, Kentucky. It was in force for 17 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: Dec 6, 2021, 4:43 AM CST (10:43 UTC)
Expired: Dec 6, 2021, 5:00 AM CST
In force: 17 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Logan County, KY

The radar

The Ft Campbell radar (KHPX), 32 km from the middle of the area, began a volume at 10:45 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

Nashville Metro, TN (KBNA), launched 00:00Z, 10.7 hours before the alert went out and 83 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: 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.

004 
WFUS53 KLMK 061043
TORLMK
KYC141-061100-
/O.NEW.KLMK.TO.W.0012.211206T1043Z-211206T1100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Louisville KY
443 AM CST Mon Dec 6 2021

The National Weather Service in Louisville has issued a

* Tornado Warning for...
  Central Logan County in south central Kentucky...

* Until 500 AM CST.
    
* At 443 AM CST, a severe thunderstorm capable of producing a tornado
  was located near Elkton, moving east at 55 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Russellville around 450 AM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3689 8705 3688 8668 3673 8676 3677 8705
      3680 8706
TIME...MOT...LOC 1043Z 274DEG 47KT 3683 8706 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

SCHOETTMER

1 follow-up statement

307 
WWUS53 KLMK 061106
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
506 AM CST Mon Dec 6 2021

KYC141-061115-
/O.EXP.KLMK.TO.W.0012.000000T0000Z-211206T1100Z/
Logan KY-
506 AM CST Mon Dec 6 2021

...THE TORNADO WARNING FOR CENTRAL LOGAN COUNTY HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been allowed to expire.

LAT...LON 3689 8705 3688 8668 3673 8676 3677 8705
      3680 8706
TIME...MOT...LOC 1105Z 274DEG 47KT 3681 8672 

$$

CG

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 5, 6:42 PM CST	Special Weather Statement	LMK	Barren	18 min
Dec 5, 6:45 PM CST	Special Weather Statement	LMK	Edmonson	15 min
Dec 5, 7:16 PM CST	Special Weather Statement	LMK	Hart	29 min
Dec 5, 7:57 PM CST	Special Weather Statement	LMK	Green	33 min
Dec 5, 8:30 PM CST	Special Weather Statement	LMK	Green, Taylor	30 min
Dec 5, 9:26 PM CST	Special Weather Statement	LMK	Butler, Grayson	34 min
Dec 5, 10:06 PM CST	Special Weather Statement	LMK	Edmonson, Grayson, Hart, Larue	54 min
Dec 6, 12:04 AM CST	Severe Thunderstorm Warning	LMK	Boyle, Marion	26 min
Dec 6, 12:36 AM CST	Severe Thunderstorm Warning	LMK	Boyle, Garrard	24 min
Dec 6, 1:02 AM CST	Special Weather Statement	LMK	Hancock	28 min
Dec 6, 2:30 AM CST	Special Weather Statement	LMK	Henry, Shelby	30 min
Dec 6, 3:18 AM CST	Special Weather Statement	LMK	Fayette, Scott, Woodford	27 min
Dec 6, 3:27 AM CST	Special Weather Statement	LMK	Hart, Larue	33 min
Dec 6, 3:48 AM CST	Special Weather Statement	LMK	Bourbon, Clark, Fayette, Nicholas	42 min
Dec 6, 3:59 AM CST	Special Weather Statement	LMK	Marion	31 min
Dec 6, 4:13 AM CST	Special Weather Statement	LMK	Jessamine, Mercer	32 min
Dec 6, 4:47 AM CST	Tornado Warning	LMK	Logan	28 min
Dec 6, 5:04 AM CST	Special Weather Statement	LMK	Simpson	26 min
Dec 6, 5:15 AM CST	Special Weather Statement	LMK	Warren	30 min
Dec 6, 6:21 AM CST	Special Weather Statement	LMK	Cumberland	24 min
Dec 6, 6:23 AM CST	Special Weather Statement	LMK	Clinton	37 min
Dec 6, 6:46 AM CST	Special Weather Statement	LMK	Clinton	14 min
Dec 6, 7:42 AM CST	Areal Flood Advisory	LMK	Taylor	3 hr
Dec 6, 9:36 AM CST	Areal Flood Advisory	LMK	Boyle, Garrard, Marion	3 hr
Dec 6, 10:54 AM CST	River Flood Warning	LMK	Bourbon	23 hr
Dec 6, 12:11 PM CST	River Flood Advisory	LMK	Franklin	32 hr

Nearby

Tornado Warnings in Kentucky, 2021 Every tornado warning in 2021 Tornadoes 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.