Tornadoes

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Tornado - Jefferson/Shelby County, Kentucky Date 4/1/2023 Time (Local) 12:30-12:34 AM EDT EF Rating EF-1 Est. Peak Winds 90 mph Path Length 4.28 miles Max Width 130 yards Injuries/Deaths 0/0 Summary: The National Weather Service conducted a storm assessment survey across eastern Jefferson County from storms early Saturday morning just after midnight on April 1. The survey team found an EF1 tornado with maximum winds of 90 mph. The tornado went a little over 4 miles intermittently and crossed over into extreme northwestern Shelby County.  The tornado first touched down just east of I-265 (Gene Snyder Freeway) at a large warehouse by Terra View Trail. The western edge of the warehouse was partially peeled back and insulation was thrown of to the north through easterly directions. A portion of the tornado was aloft, based on the lack of tree damage initially, until it hit a plastic surgery center off of Bush Farm Road which sustained roof damage. This consisted of shingle and fascia damage. Most of that was cleaned up and repaired by the time of the survey. There was insulation on the back side of the three-story building.  The street sign was bent back and turned to the northeast at Arnold Palmer Boulevard near Chestnut Ridge. There was sporadic tree damage along Chestnut Ridge Circle, and at 15107 Chestnut Ridge Circle a doorbell camera showed an intense loud 20 second burst of wind and rain. The homeowner stated that the entire house was shaking, and several trees were snapped and twisted, and their garbage tote was found two houses over behind that house. Behind their house across Lake Forest Country Club were several uprooted and twisted trees. Most of the trees were laying from the north-northeast to due east. There was sporadic wind damage along Champion Lakes Way, with several houses sustaining gutter and fascia damage. The maximum wind speed in Lake Forest was 85 mph with a width of 75 yards.  The tornado took a southward jog along Flat Rock Road and increased in wind speed and width. All along Flat Rock Road there were dozens and dozens of trees snapped, twisted and uprooted. The width of the tornado increased to 130 yards wide and the wind speed increased to 90 mph. Several residents heard a distinct roar and had their ears pop. There was shingle and fascia damage.  The tornado took a northward jog and crossed into northwestern Shelby County. The twister did sporadic wind damage along Crabapple Lane. Trees were snapped and twisted and some uprooted. Wind speeds were between 80 and 85 mph and the width decreased to less than 100 yards. The tornado crossed Kentucky Route 362 (Ash Ave) along the southern portion of Persimmon Ridge Golf Club. The main damage was shingle loss to homes, and sporadic tree damage.  The last damage point was along Persimmon Ridge Road, paralleling Aiken Road.  Track Map Downloadable KMZ File

Roof Damage near Old Henry Road and Bush Farm Road A bent light post in the Lake Forest subdivision Fallen trees along Flat Rock Road Tree damage at Persimmon Ridge Golf Club in Shelby County

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

Radar - Jefferson/Shelby County Tornado

Reflectivity from KLVX at 12:30am EDT (Jefferson/Shelby County, KY)	Reflectivity from KLVX at 12:32am EDT (Jefferson/Shelby County, KY)	Reflectivity from KLVX at 12:34am EDT (Jefferson/Shelby County, KY)
Velocity from KLVX at 12:30am EDT (Jefferson/Shelby County, KY)	Velocity from KLVX at 12:32am EDT (Jefferson/Shelby County, KY)	Velocity from KLVX at 12:34am EDT (Jefferson/Shelby County, KY)

Storm Reports

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

0458 PM     HAIL             ORLEANS                 38.66N 86.45W 
03/31/2023  E1.00 IN         ORANGE IN               PUBLIC REPORT 

            FROM MPING: QUARTER-SIZE HAIL (1.00 IN.).

1157 PM     TSTM WND DMG     CORYDON                 38.21N 86.13W 
03/31/2023                   HARRISON IN             911 CALL CENTER 

            REPORTS OF TREES DOWN.

1225 AM     TSTM WND DMG     4 NNE BEDFORD           38.65N 85.30W 
04/01/2023                   TRIMBLE KY              PUBLIC 

            40 BY 60 FOOT BARN DESTROYED. TIME ESTIMATED FROM RADAR.

1225 AM     TSTM WND GST     2 S SAINT MATTHEWS      38.22N 85.63W 
04/01/2023  E60 MPH          JEFFERSON KY            NWS EMPLOYEE 

            RETIRED NWS EMPLOYEE REPORTED AN ESTIMATED WIND GUST 
            NEAR 60 MPH.

1227 AM     TSTM WND GST     2 SW SAINT MATTHEWS     38.23N 85.66W 
04/01/2023  M60 MPH          JEFFERSON KY            ASOS 

            KLOU REPORTED A THUNDERSTORM WIND GUST OF 60 MPH.

1228 AM     TSTM WND DMG     2 SW ANCHORAGE          38.25N 85.56W 
04/01/2023                   JEFFERSON KY            NWS EMPLOYEE 

            LARGE HEALTHY OLDER MAPLE TREE WAS DOWN, BLOCKING DORSEY LN 
            NEAR WARD AVE. POWER LINES WERE DOWN IN THIS AREA TOO. 
            TIME ESTIMATED FROM RADAR.

1230 AM     TORNADO          2 E ANCHORAGE           38.27N 85.50W 
04/01/2023                   JEFFERSON KY            NWS STORM SURVEY 

            THE NATIONAL WEATHER SERVICE IN LOUISVILLE CONDUCTED A 
            STORM SURVEY AND FOUND DAMAGE IN NORTHEASTERN JEFFERSON COUNTY 
            AND NORTHWESTERN SHELBY COUNTY CONSISTENT WITH AN EF1 TORNADO 
            WITH MAXIMUM WINDS OF 90 MPH. THE PATH LENGTH WAS APPROXIMATELY 
            4.3 MILES, AND THE MAXIMUM PATH WIDTH WAS 130 YARDS.

1255 AM     TSTM WND DMG     2 S LOUISVILLE          38.23N 85.76W 
04/01/2023                   JEFFERSON KY            PUBLIC 

            VIA SOCIAL MEDIA - IMAGES OF A LARGE TREE BLOWN ONTO A CAR ON 
            ST. JAMES COURT IN LOUISVILLE.

1256 AM     TSTM WND DMG     1 SSE IBERIA            37.36N 86.16W 
04/01/2023                   GRAYSON KY              PUBLIC 

            TREES UPROOTED, GARAGE DOOR BLOWN IN, OUTBUILDINGS DAMAGED 
            ON NOLIN ESTATES ROAD.

105 AM      TSTM WND DMG     1 S MAMMOTH CAVE        37.19N 86.10W 
04/01/2023                   EDMONSON KY             911 CALL CENTER 

            DISPATCH REPORTED MULTIPLE TREES DOWN IN MAMMOTH CAVE. 
            TIME ESTIMATED FROM RADAR.

105 AM      TSTM WND DMG     3 S KESSINGER           37.26N 85.97W 
04/01/2023                   HART KY                 911 CALL CENTER 

            TREES AND POWER LINES DOWN IN LOGSDON VALLEY.

110 AM      TSTM WND DMG     1 SE MUNFORDVILLE       37.27N 85.89W 
04/01/2023                   HART KY                 911 CALL CENTER 

            DISPATCH REPORT OF TREES AND POWER LINES DOWN IN MUNFORDVILLE.

114 AM      TSTM WND DMG     3 NNW HALFWAY           36.84N 86.31W 
04/01/2023                   ALLEN KY                911 CALL CENTER 

            DISPATCH REPORTED TREES AND POWER LINES DOWN ON 
            ALLEN SPRINGS ROAD.

122 AM      TSTM WND DMG     LYNDON                  38.26N 85.58W 
04/01/2023                   JEFFERSON KY            911 CALL CENTER 

            DISPATCH REPORTED TREE DOWN AT WILLOW SPRINGS DRIVE AND 
            WHIPPS MILL ROAD. TIME ESTIMATED FROM RADAR.

122 AM      TSTM WND DMG     3 W CAVE CITY           37.14N 86.03W 
04/01/2023                   BARREN KY               911 CALL CENTER 

            DISPATCH REPORTED TREE DOWN ON JENNY ROAD. TIME ESTIMATED 
            FROM RADAR.

122 AM      TSTM WND DMG     2 N SUMMERSVILLE        37.34N 85.61W 
04/01/2023                   GREEN KY                EMERGENCY MANAGER 

            EMERGENCY MANAGER REPORTED TREES DOWN OVER HUDGINS WAY.

127 AM      TSTM WND DMG     4 W TODDS POINT         38.29N 85.42W 
04/01/2023                   SHELBY KY               911 CALL CENTER 

            DISPATCH REPORTED TREE DOWN ON AIKEN ROAD AND LONG RUN ROAD. 
            TIME ESTIMATED FROM RADAR.

127 AM      TSTM WND DMG     2 SSE BERRY             38.49N 84.37W 
04/01/2023                   HARRISON KY             TRAINED SPOTTER 

            THUNDERSTORM WIND DAMAGE WAS OBSERVED NEAR ROBINSON, 
            WHERE A ROOF WAS BLOWN OFF A BARN. ALL DEBRIS FROM THE ROOF 
            WAS BLOWN TO THE NORTHEAST CORNER OF THE PROPERTY. 
            TIME ESTIMATED FROM RADAR.

Environment

Synoptic Fields

500mb Analysis at 8:00pm EDT 03/31/2023	850mb Analysis at 8:00pm EDT 03/31/2023	925mb Analysis at Midnight EDT 04/01/2023	Surface Analysis at Midnight EDT 04/01/2023

Instability, Shear, and Helicity Parameters

Surface-based Convective Available Potential Energy (SBCAPE) at 10pm EDT 03/31/2023	SBCAPE at 2am EDT 04/01/2023	Mixed-Layer CAPE at Midnight EDT 04/01/2023
Effective Bulk Shear at 10pm EDT 03/31/2023	Effective Bulk Shear at 2am EDT 04/01/2023	0-1 km Storm-Relative Helicity at Midnight EDT 04/01/2023

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