Louisville, KY

Weather Forecast Office

Storm Event Summary December 5-6, 2021

Overview

A potent cold front combined with energy crossing the region aloft to allow a widespread area of showers and thunderstorms to develop late Sunday night through early Monday morning. Some wind damage and minor flooding occurred, along with two EF1 tornadoes.

EF1 Tornado Damage at a Mobile Home Park in Stamping Ground, KY

Tornado
Photos & Video
Radar
Storm Reports
Rainfall
Environment

Tornadoes:

Tornado - Stamping Ground, KY
Scott County, Kentucky

Date	12/6/2021
Time (Local)	4:22 AM EST
EF Rating	EF-1
Est. Peak Winds	95 mph
Path Length	0.25 miles
Max Width	60 yards
Injuries/Deaths	2 injuries
Summary: The National Weather Service in Louisville, Kentucky conducted a storm survey in Scott County, Kentucky of storm damage that occurred early Monday morning. The survey team determined that a tornado touched down just southwest of the Parkers mobile home park in Stamping Ground. The initial touchdown was in a wooden fenced area with uprooted trees and significant damage to the wooden fence. Wind speeds were estimated to be between 80 and 85 mph initially. The tornado increased in speed and diameter, striking the mobile home park causing significant damage. Trailers were lifted off their foundation, some trailers were flipped over and or turned in a different direction. Insulation and metal siding from the trailers were thrown up into the trees. Deck pieces were thrown and impaled into the ground, trees were twisted and snapped, and numerous air conditioner units were thrown several feet. The tornado increased to around 95 mph with a width of 60 yards. The most obvious sign of the tornado were outbuildings were picked up and thrown upwind, with insulation on both sides of the buildings. The damage direction from the trees, and insulation from mobile homes ranged north to southeasterly. The tornado became more of a skipping tornado as it moved to the east with the last damage being some power poles and trees at the corner of Edgewood Way and 227. Just east of Stamping Ground, the survey team found a significant area of straight line winds along Duvall Station Road. A third of a mile swath of concentrated wind damage occurred 2 miles east of Stamping Ground. It started out in a grove of trees with large branches and trees knocked down all facing from the southwesterly to the east northeast direction. Wind speeds were estimated initially to be 65 to 70 mph. A well constructed barn had its roof panels ripped off and doors blown in. Metal sheeting from the barn was thrown up to 500 yards down wind. Two other barns on the other side of the road had similar type damage. Shingles from two family homes were thrown a hundred yards. Wind speeds from the well constructed barn, were determined to be 80 mph. The damage area was about a quarter mile by a third of a mile. The National Weather Service would like to thank Scott county emergency manager Mike Hennigan for his assistance with the survey.

Tornado Path

Track Map EF-Scale

Straight Line Wind Path

Straight Line Wind Map

EF-Scale

Tornado - North of Frankfort
Franklin County, Kentucky

Date	December 6, 2021
Time (Local)	4:10 AM EST
EF Rating	EF-1
Est. Peak Winds	90 mph
Path Length	1.5 mile
Max Width	50 yards
Injuries/Deaths	0/0
Summary: The National Weather Service conducted a storm damage survey in Franklin County from storms that occurred early Monday morning. The survey team determined that a tornado touched down on the 1100 block of Manley Leestown Road, about two miles north of Frankfort. Drone imagery showed a well built 40 by 60 barn had significant roof damage and the south wall blown out. The skipping tornado then went through a large grove of trees. Dozens of trees were twisted and uprooted, ranging from cedar to maple to Osage orange trees. About a dozen cedar trees were twisted and laying in multiple directions. The tornado then hit a well-built two-story house on the 100 block of Shadrick Ferry Road. The southwest side of the house had significant damage and that portion of the roof fell to the north northeasterly direction. Insulation from the house went from the north all the way to a southwesterly direction. A Ring doorbell camera showed the distinct tornado with debris being thrown in all directions around 411 AM EST. The tornado appeared to lift briefly before touching down on the 6000 block of Owenton Road. A brand new, well constructed 30 by 50 barn took significant damage to the roof. Both garage doors were blown in with tool chests and many heavier items being scattered about the garage. Throughout the entire barn the thick concrete foundation was shifted about an inch. Immediately next to the barn, there was a one story family residence that had no damage whatsoever. Large sections of roof were thrown 60 yards into the neighbors trees and yard. The tornado lifted at this point. The winds were consistently between 85 and 90 mph along this narrow path, and the width was between 40 and 50 yards. The National Weather Service would like to thank Franklin County Emergency Management Deputy Ray Kinney for his assistance with the survey.

Tornado Path

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Photos & Video

Scott County, KY EF-1 Tornado Damage

An EF-1 tornado blew this mobile home on its side in Stamping Ground, KY

(NWS Storm Survey)

An EF-1 tornado blew the roof off of this home in Stamping Ground, KY

(NWS Storm Survey)

One mobile home was flipped and blown onto another in Stamping Ground, KY

(NWS Storm Survey)

Kentucky Utilities works to restore power in Stamping Ground, KY

(NWS Storm Survey)

Franklin County, KY EF-1 Tornado Damage

Drone photo of a clear tornado path in Franklin County, KY

(NWS Storm Survey)

Additional drone photo of damage path in Franklin County, KY
(NWS Storm Survey)

Drone photo of a damaged garage and debris in Franklin County, KY
(NWS Storm Survey)

Doorbell Camera Video of Franklin County, KY EF-1 Tornado

Video courtesy of Greg Tigges

Radar

Several waves of thunderstorms affected the region last night, bringing moderate to occasionally heavy rainfall as well as plenty of lightning. Winds generally topped out in the 40-50 mph range, but a few spots saw higher amounts, with several reports of trees down across the region. In addition, an EF1 tornado quickly developed over Stamping Ground, KY. Radar imagery below did not show the typical pattern of a tornado across the region.


Radar Loop Through the Event	Reflectivity at 522 AM EST, Approx time of tornado touchdown	Storm minus Relative Motion not showing a big signal for a tornado	Correlation Coefficient, also not showing signs of tornadic debris

Storm Reports


PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LOUISVILLE KY
248 PM EST MON DEC 6 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0100 AM     TSTM WND DMG     1 N LEBANON             37.58N 85.25W
12/06/2021                   MARION             KY   911 CALL CENTER  

            TREES AND WIRES DOWN ACROSS BOLDRICK AVE 
            NEAR WOODLAWN AVE. TIME APPROXIMATED FROM 
            RADAR. 

0105 AM     TSTM WND DMG     3 ENE LEBANON           37.58N 85.21W
12/06/2021                   MARION             KY   911 CALL CENTER  

            TREE 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. 

0127 AM     TSTM WND DMG     1 W PARKSVILLE          37.60N 84.91W
12/06/2021                   BOYLE              KY   911 CALL CENTER  

            TREES DOWN ON TANK POND ROAD. TIME 
            APPROXIMATED FROM RADAR. 

0136 AM     TSTM WND DMG     1 NNW DANVILLE          37.65N 84.78W
12/06/2021                   BOYLE              KY   911 CALL CENTER  

            TREE DOWN NEAR INTERSECTION OF HIGH STREET 
            AND FIFTH STREET. TIME ESTIMATED FROM RADAR. 

0139 AM     TSTM WND DMG     2 WNW JUNCTION CITY     37.60N 84.82W
12/06/2021                   BOYLE              KY   911 CALL CENTER  

            TREES DOWN ON YATES ROAD OFF HWY 300. TIME 
            ESTIMATED FROM RADAR. DISPATCHER ALSO 
            REPORTED HIGH WATER THERE. 

0139 AM     TSTM WND DMG     4 ENE DANVILLE          37.67N 84.71W
12/06/2021                   BOYLE              KY   911 CALL CENTER  

            TREES DOWN. TIME ESTIMATED FROM RADAR. 

0312 AM     TSTM WND GST     LOUISVILLE BOWMAN FIELD 38.22N 85.67W
12/06/2021  M46 MPH          JEFFERSON          KY   ASOS             

            A PEAK WIND GUST OF 46MPH WAS MEASURED AT 
            THE LOUISVILLE BOWMAN FIELD ASOS STATION. 

0415 AM     TSTM WND GST     2 WSW FRANKFORT         38.18N 84.90W
12/06/2021  M49 MPH          FRANKLIN           KY   ASOS             

            THE FRANKFORT ASOS STATION MEASURED 49MPH AS 
            A PEAK WIND GUST. 

0422 AM     TORNADO          STAMPING GROUND         38.27N 84.68W
12/06/2021                   SCOTT              KY   NWS STORM SURVEY 

            *** 2 INJ *** 
            AN EF1 TORNADO WITH PEAK WINDS AROUND 95 MPH 
            BRIEFLY TOUCHED IN STAMPING GROUND. IT WAS 
            ON THE GROUND FOR A QUARTER OF A MILE WITH A 
            MAXIMUM WIDTH OF 60 YARDS. IT CAUSED DAMAGE 
            TO MULTIPLE MOBILE HOMES AND TREES AS WELL 
            AS OUTBUILDINGS. 

0425 AM     TSTM WND DMG     2 E STAMPING GROUND     38.27N 84.65W
12/06/2021                   SCOTT              KY   NWS STORM SURVEY 

            NWS STORM SURVEY FOUND STRAIGHT-LINED WIND 
            DAMAGE PEAKING AT 80 MPH IN AN AREA ROUGHLY 
            A QUARTER OF A MILE BY A THIRD OF A MILE. 
            DAMAGE WAS CONCENTRATED ALONG DUVALL STATION 
            RD. SEVERAL TREES WERE DOWNED AND A WELL 
            CONSTRUCTED BARN HAD ITS ROOF PANELS RIPPED 
            OFF AND DOORS BLOWN IN. SHINGLES FROM 2 
            RESIDENCES ALSO WERE THROWN A HUNDRED YARDS. 

0446 AM     TSTM WND GST     6 W LEXINGTON           38.04N 84.61W
12/06/2021  M46 MPH          FAYETTE            KY   ASOS             

            LEX ASOS. 

0551 AM     TSTM WND DMG     2 E OLMSTEAD            36.75N 86.97W
12/06/2021                   LOGAN              KY   911 CALL CENTER  

            DISPATCH REPORTED A TREE ACROSS OLD VOLNEY 
            RD. TIME APPROXIMATED FROM RADAR. 

0621 AM     TSTM WND DMG     1 E LANCASTER           37.62N 84.56W
12/06/2021                   GARRARD            KY   911 CALL CENTER  

            TREES DOWN ON WESLEY RD. AREA HAD THREE 
            ROUNDS OF STORMS FROM 1 TO 7 AM. ESTIMATED 
            THE LAST WAVE CAUSED THIS DAMAGE. 

0627 AM     TSTM WND DMG     1 SSE CAMPBELLSVILLE    37.33N 85.34W
12/06/2021                   TAYLOR             KY   EMERGENCY MNGR   

            POWER POLE AND LINES DOWN ON LINCOLN AVE AT 
            RED LANE. TIME ESTIMATED FROM RADAR. 

0630 AM     TSTM WND DMG     3 WNW OXFORD            38.29N 84.58W
12/06/2021                   SCOTT              KY   COUNTY OFFICIAL  

            POWERLINES ARE DOWN AROUND SCOTT COUNTY, KY. 
            DUE TO THIS, THE SCOTT COUNTY SCHOOLS HAVE 
            BEEN CLOSED FOR TODAY. 

0630 AM     FLOOD            1 NNW DANVILLE          37.66N 84.78W
12/06/2021                   BOYLE              KY   911 CALL CENTER  

            DISPATCHER REPORTED HIGH WATER AT MAPLE AVE 
            AT THE RAILROAD UNDERPASS. ALSO ON E MAIN ST 
            NEAR STANFORD RD. 

0700 AM     FLOOD            GRAVEL SWITCH           37.58N 85.05W
12/06/2021                   MARION             KY   911 CALL CENTER  

            DISPATCHERS REPORTED EARLIER THAT WATER WAS 
            ACROSS A GOOD PORTION OF THE ROAD AT HIGHWAY 
            243. ALSO A REPORT OF WATER AT INTERSECTION 
            OF HARDIN AND CHANDLER AND IN HAMILTON 
            HEIGHTS IN LEBANON, NEAR HARDIN CREEK. 

0700 AM     TSTM WND DMG     3 E PREACHERSVILLE      37.54N 84.50W
12/06/2021                   GARRARD            KY   911 CALL CENTER  

            TREES DOWN AT FALL LICK RD AND DRAKES CREEK 
            RD. TIME ESTIMATED FROM RADAR. 

0715 AM     TSTM WND DMG     3 NW WINDSOR            37.16N 84.96W
12/06/2021                   CASEY              KY   TRAINED SPOTTER  

            NEARBY KY MESONET STATIONS GUSTED 40MPH 
            CAUSING MANY SNAPPED PINE TREES NEAR 
            DUNNVILLE, KY. 

0800 AM     FLOOD            1 ESE CAMPBELLSVILLE    37.35N 85.33W
12/06/2021                   TAYLOR             KY   EMERGENCY MNGR   

            ALLEN STREET NEAR BUCK HORN CREEK IS CLOSED 
            DUE TO FLOODING. OTHER ROADS IN THE COUNTY, 
            INCLUDING BEAR TRACK RD, PALESTINE RD, 
            FAIRVIEW RD, AND SALEM CHURCH RD ARE ALSO 
            CLOSED DUE TO MINOR FLOODING. MOST ARE 
            TYPICALLY FLOOD PRONE LOCATIONS.