Alert archive / Kentucky / Tornado Warnings in 2021

Tornado Warning 17, NWS Wilmington, OH

December 11, 2021Bracken County, Mason County, Robertson County, Kentucky

NWS Wilmington, OH issued this tornado warning at Dec 11, 2021, 3:16 AM EST for Bracken County, Mason County, Robertson County, Kentucky. It was in force for 29 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, 3:16 AM EST (08:16 UTC)
Expired: Dec 11, 2021, 3:45 AM EST
In force: 29 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Bracken County, KY, Mason County, KY, Robertson County, KY

The radar

The Cincinnati radar (KILN), 103 km from the middle of the area, began a volume at 08:17 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.

Issued	Product	Office	Lasted
Dec 11, 12:20 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.3 hours before the alert went out and 105 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: 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.

010 
WFUS51 KILN 110816
TORILN
KYC023-161-201-110845-
/O.NEW.KILN.TO.W.0017.211211T0816Z-211211T0845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington OH
316 AM EST Sat Dec 11 2021

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Western Mason County in northern Kentucky...
  Robertson County in northern Kentucky...
  Southeastern Bracken County in northern Kentucky...

* Until 345 AM EST.
    
* At 316 AM EST, a severe thunderstorm capable of producing a tornado
  was located 8 miles northeast of Cynthiana, 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...
  Maysville, Washington, Mount Olivet, Germantown, Sardis, Minerva,
  US Route 62 at State Route 875, Blue Licks Battlefield, Abigail,
  Milford, Murphysville, Moranburg, Burika, Alhambra, Stonewall, Mays
  Lick, Mitchells Mill, Santa Fe, Lowell and Kentontown.

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.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3843 8400 3844 8402 3846 8410 3848 8413
      3848 8415 3849 8415 3849 8417 3850 8416
      3850 8418 3856 8416 3855 8421 3872 8395
      3871 8381 3856 8376 3848 8390 3849 8393
      3845 8398 3842 8400
TIME...MOT...LOC 0816Z 236DEG 53KT 3848 8419 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

KC

3 follow-up statements

077 
WWUS51 KILN 110826
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
326 AM EST Sat Dec 11 2021

KYC023-161-201-110845-
/O.CON.KILN.TO.W.0017.000000T0000Z-211211T0845Z/
Mason KY-Robertson KY-Bracken KY-
326 AM EST Sat Dec 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 AM EST FOR WESTERN
MASON...ROBERTSON AND SOUTHEASTERN BRACKEN COUNTIES...
    
At 326 AM EST, a severe thunderstorm capable of producing a tornado
was located 8 miles south of Brooksville, 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...
Maysville, Washington, Mount Olivet, Germantown, Sardis, Minerva, US
Route 62 at State Route 875, Abigail, Milford, Murphysville,
Moranburg, Stonewall, Santa Fe, Lowell, Tuckahoe, US Route 62 at
State Route 616 and Hittville.

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.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3847 8409 3858 8416 3872 8395 3871 8381
      3858 8377 3853 8387 3851 8392
TIME...MOT...LOC 0826Z 236DEG 53KT 3857 8403 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

KC

763 
WWUS51 KILN 110833
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
333 AM EST Sat Dec 11 2021

KYC023-201-110842-
/O.CAN.KILN.TO.W.0017.000000T0000Z-211211T0845Z/
Robertson KY-Bracken KY-
333 AM EST Sat Dec 11 2021

...THE TORNADO WARNING FOR ROBERTSON AND SOUTHEASTERN BRACKEN
COUNTIES IS CANCELLED...
    
The tornadic 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 600 AM EST for northern
Kentucky...and southwestern Ohio.

LAT...LON 3856 8397 3859 8397 3859 8398 3860 8399
      3872 8393 3871 8382 3871 8381 3861 8378
      3857 8388 3855 8396
TIME...MOT...LOC 0832Z 236DEG 53KT 3863 8392 

$$

KYC161-110845-
/O.CON.KILN.TO.W.0017.000000T0000Z-211211T0845Z/
Mason KY-
333 AM EST Sat Dec 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 AM EST FOR
NORTHWESTERN MASON COUNTY...
    
At 332 AM EST, a severe thunderstorm capable of producing a tornado
was located near Washington, 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...
Maysville, Washington, Germantown, Minerva, Lowell, Moranburg and
Tuckahoe.

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.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3856 8397 3859 8397 3859 8398 3860 8399
      3872 8393 3871 8382 3871 8381 3861 8378
      3857 8388 3855 8396
TIME...MOT...LOC 0832Z 236DEG 53KT 3863 8392 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

KC

131 
WWUS51 KILN 110841
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
341 AM EST Sat Dec 11 2021

KYC161-110851-
/O.EXP.KILN.TO.W.0017.000000T0000Z-211211T0845Z/
Mason KY-
341 AM EST Sat Dec 11 2021

...THE TORNADO WARNING FOR NORTHWESTERN MASON COUNTY WILL EXPIRE AT
345 AM EST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 600 AM EST for northern
Kentucky...and southwestern Ohio.

Please report previous tornadoes, wind damage or hail to the National
Weather Service by going to our website at weather.gov/iln and
submitting your report via social media.

LAT...LON 3856 8397 3859 8397 3859 8398 3860 8399
      3872 8393 3871 8382 3871 8381 3861 8378
      3857 8388 3855 8396
TIME...MOT...LOC 0841Z 236DEG 53KT 3871 8377 

$$

KC

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 11, 1:34 AM EST	Severe Thunderstorm Warning	ILN	Boone	28 min
Dec 11, 3:12 AM EST	Special Weather Statement	ILN	Owen	33 min
Dec 11, 3:41 AM EST	Severe Thunderstorm Warning	ILN	Lewis, Mason	49 min
Dec 11, 3:55 AM EST	Severe Thunderstorm Warning	ILN	Bracken, Mason, Robertson	32 min
Dec 11, 4:08 AM EST	Areal Flood Advisory	ILN	Bracken, Mason, Robertson	3 hr
Dec 11, 4:59 AM EST	Special Weather Statement	ILN	Lewis, Mason	46 min

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.