Alert archive / Kentucky / Tornado Warnings in 2021

Tornado Warning 6, NWS Jackson, KY

December 11, 2021Estill County, Powell County, Kentucky

NWS Jackson, KY issued this tornado warning at Dec 11, 2021, 5:43 AM EST for Estill County, Powell County, Kentucky. It was in force for 32 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 11, 2021, 5:43 AM EST (10:43 UTC)
Expired
Dec 11, 2021, 6:15 AM EST
In force
32 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Estill County, KY, Powell County, KY

The radar

The Jackson,KY radar (KJKL), 60 km from the middle of the area, began a volume at 10:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 11, 2:27 AM ESTTornado WatchSPC7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 10.7 hours before the alert went out and 181 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 2021-12-11Temperature 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 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 325 square meters per square second.1939587897Sfc1 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
519 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
325 m²/s²
0-3 km storm-relative helicity
431 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WFUS53 KJKL 111043
TORJKL
KYC065-197-111115-
/O.NEW.KJKL.TO.W.0006.211211T1043Z-211211T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service JACKSON KY
543 AM EST Sat Dec 11 2021

The National Weather Service in JACKSON KY has issued a

* Tornado Warning for...
  Powell County in east central Kentucky...
  Northern Estill County in east central Kentucky...

* Until 615 AM EST.
    
* At 543 AM EST, a severe thunderstorm capable of producing a tornado
  was located near Richmond, moving northeast at 60 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...
  Winston around 550 AM EST.
  Irvine around 555 AM EST.
  Hardwick around 600 AM EST.

Other locations in the path of this tornadic thunderstorm include
Knowlton and Bowen.

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.

&&

LAT...LON 3792 8376 3790 8376 3782 8364 3779 8366
      3765 8411 3767 8409 3774 8410 3774 8408
      3777 8409 3778 8411 3780 8408 3781 8408
      3791 8385 3790 8382
TIME...MOT...LOC 1043Z 243DEG 53KT 3766 8422 

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

$$

GREIF
2 follow-up statements
072 
WWUS53 KJKL 111058
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
558 AM EST Sat Dec 11 2021

KYC065-197-111115-
/O.CON.KJKL.TO.W.0006.000000T0000Z-211211T1115Z/
Powell KY-Estill KY-
558 AM EST Sat Dec 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 AM EST FOR POWELL
AND NORTHWESTERN ESTILL COUNTIES...
    
At 558 AM EST, a severe thunderstorm capable of producing a tornado
was located over Hardwick, or near Irvine, moving northeast at 60
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.

Locations impacted include...
  Stanton and Bowen.

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.

&&

LAT...LON 3792 8376 3790 8376 3782 8364 3779 8366
      3770 8406 3767 8409 3774 8410 3774 8408
      3777 8409 3778 8411 3780 8408 3781 8408
      3791 8385 3790 8382
TIME...MOT...LOC 1058Z 243DEG 53KT 3776 8396 

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

$$

GREIF
252 
WWUS53 KJKL 111110
SVSJKL

Severe Weather Statement
National Weather Service JACKSON KY
610 AM EST Sat Dec 11 2021

KYC065-197-111120-
/O.EXP.KJKL.TO.W.0006.000000T0000Z-211211T1115Z/
Powell KY-Estill KY-
610 AM EST Sat Dec 11 2021

...THE TORNADO WARNING FOR POWELL AND NORTHWESTERN ESTILL COUNTIES
WILL EXPIRE AT 615 AM EST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 900 AM EST for east central
Kentucky.

LAT...LON 3792 8376 3790 8376 3782 8364 3779 8366
      3770 8406 3767 8409 3774 8410 3774 8408
      3777 8409 3778 8411 3780 8408 3781 8408
      3791 8385 3790 8382
TIME...MOT...LOC 1110Z 243DEG 53KT 3783 8378 

$$

GREIF

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 11, 4:45 AM ESTSevere Thunderstorm WarningJKLBath, Estill, Menifee, Montgomery, Powell30 min
Dec 11, 4:55 AM ESTSevere Thunderstorm WarningJKLBath, Fleming, Menifee, Rowan35 min
Dec 11, 5:13 AM ESTTornado WarningJKLEstill, Lee, Montgomery, Powell17 min
Dec 11, 5:27 AM ESTSevere Thunderstorm WarningJKLEstill, Menifee, Montgomery, Morgan, Powell, Rowan and 1 more48 min
Dec 11, 5:49 AM ESTSevere Thunderstorm WarningJKLMcCreary, Pulaski, Wayne, Whitley41 min
Dec 11, 5:56 AM ESTTornado WarningJKLMcCreary, Wayne19 min
Dec 11, 6:08 AM ESTAreal Flood AdvisoryJKLEstill, Menifee, Montgomery, Powell3 hr
Dec 11, 6:17 AM ESTSpecial Weather StatementJKLElliott, Menifee, Morgan, Powell, Rowan58 min
Dec 11, 6:30 AM ESTSevere Thunderstorm WarningJKLClay, Knox, Laurel, McCreary, Pulaski, Whitley30 min
Dec 11, 6:38 AM ESTSevere Thunderstorm WarningJKLBath, Estill, Jackson, Menifee, Montgomery, Powell and 3 more37 min
Dec 11, 6:53 AM ESTTornado WarningJKLKnox, Whitley22 min
Dec 11, 6:58 AM ESTSevere Thunderstorm WarningJKLBell, Clay, Jackson, Knox, Laurel, Leslie and 4 more32 min
Dec 11, 7:08 AM ESTSevere Thunderstorm WarningJKLBath, Estill, Jackson, Lee, Menifee, Morgan and 4 more37 min
Dec 11, 7:24 AM ESTSevere Thunderstorm WarningJKLBell, Clay, Harlan, Knox, Leslie, Letcher and 2 more51 min
Dec 11, 7:39 AM ESTSevere Thunderstorm WarningJKLBreathitt, Elliott, Lee, Magoffin, Morgan, Owsley and 2 more36 min
Dec 11, 7:42 AM ESTAreal Flood AdvisoryJKLMcCreary, Whitley3 hr
Dec 11, 8:04 AM ESTSpecial Weather StatementJKLJohnson, Magoffin, Martin26 min
Dec 11, 8:15 AM ESTSevere Thunderstorm WarningJKLBell, Knox, Whitley30 min
Dec 11, 8:20 AM ESTFlash Flood WarningJKLMcCreary, Whitley3 hr
Dec 11, 8:45 AM ESTSevere Thunderstorm WarningJKLBell, Harlan, Knox, Leslie, Whitley30 min
Dec 11, 9:14 AM ESTAreal Flood WarningJKLPowell3 hr
Dec 11, 9:15 AM ESTSpecial Weather StatementJKLBell, Harlan, Letcher, Pike45 min
Dec 11, 9:57 AM ESTSpecial Weather StatementJKLHarlan33 min
Dec 11, 12:06 PM ESTSpecial Weather StatementJKLBath, Estill, Fleming, Jackson, Menifee, Montgomery and 3 more39 min
Dec 11, 12:45 PM ESTSpecial Weather StatementJKLBath, Elliott, Estill, Jackson, Lee, Menifee and 7 more45 min

Nearby

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