Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 45, NWS Louisville, KY

June 12, 2021Boyle County, Casey County, Marion County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jun 12, 2021, 6:10 PM EDT for Boyle County, Casey County, Marion County, Kentucky. It was in force for 23 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 12, 2021, 6:10 PM EDT (22:10 UTC)
Expired: Jun 12, 2021, 6:33 PM EDT
In force: 23 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Boyle County, KY, Casey County, KY, Marion County, KY

The radar

The Louisville radar (KLVX), 104 km from the middle of the area, began a volume at 22:10 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.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 6:26 PM EDT	TSTM WND DMG	4 Sse Jacktown, KY	TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.2 hours before the alert went out and 208 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: 1463 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

900 
WUUS53 KLMK 122210
SVRLMK
KYC021-045-155-122245-
/O.NEW.KLMK.SV.W.0045.210612T2210Z-210612T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
610 PM EDT Sat Jun 12 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Southeastern Marion County in central Kentucky...
  Southwestern Boyle County in central Kentucky...
  Northern Casey County in central Kentucky...

* Until 645 PM EDT.

* At 609 PM EDT, severe thunderstorms were from 11 miles east of 
  Lebanon to 8 miles southwest of Danville, moving south at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Peytons Store, Ellisburg, Gravel Switch, Chilton, Forkland,
  Middleburg, Jacktown, Butchertown, Beech Bottom, and Aliceton.

These storms blew trees down in Woodford, Mercer, and Boyle Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3740 8511 3740 8509 3741 8508 3744 8511
      3761 8509 3759 8485 3755 8484 3753 8486
      3747 8486 3743 8485 3741 8482 3732 8481
TIME...MOT...LOC 2209Z 009DEG 23KT 3758 8504 3754 8486 

HAIL...<.75IN
WIND...60MPH
 
$$

13

2 follow-up statements

116 
WWUS53 KLMK 122223
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
623 PM EDT Sat Jun 12 2021

KYC021-122232-
/O.CAN.KLMK.SV.W.0045.000000T0000Z-210612T2245Z/
Boyle KY-
623 PM EDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BOYLE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.

LAT...LON 3740 8511 3740 8509 3741 8508 3744 8511
      3752 8505 3750 8493 3750 8486 3747 8486
      3743 8485 3741 8482 3732 8481
TIME...MOT...LOC 2222Z 010DEG 35KT 3743 8496 

$$

KYC045-155-122245-
/O.CON.KLMK.SV.W.0045.000000T0000Z-210612T2245Z/
Marion KY-Casey KY-
623 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHEASTERN MARION AND NORTHERN CASEY COUNTIES...

At 622 PM EDT, a severe thunderstorm was located 7 miles north of
Liberty, moving south at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Peytons Store, Chilton, Middleburg, Jacktown, Ellisburg, and Beech 
Bottom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3740 8511 3740 8509 3741 8508 3744 8511
      3752 8505 3750 8493 3750 8486 3747 8486
      3743 8485 3741 8482 3732 8481
TIME...MOT...LOC 2222Z 010DEG 35KT 3743 8496 

HAIL...<.75IN
WIND...60MPH
 
$$

13

791 
WWUS53 KLMK 122233
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
633 PM EDT Sat Jun 12 2021

KYC045-155-122243-
/O.CAN.KLMK.SV.W.0045.000000T0000Z-210612T2245Z/
Marion KY-Casey KY-
633 PM EDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARION AND
NORTHERN CASEY COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened.

If you observed hail of at least one inch in diameter or whole trees 
blown down, please let us know via Facebook or Twitter, or notify 
local law enforcement and request that they pass the information on 
to the National Weather Service in Louisville. Thank you.

LAT...LON 3740 8511 3740 8509 3741 8508 3744 8511
      3752 8505 3750 8493 3750 8486 3747 8486
      3743 8485 3741 8482 3732 8481
TIME...MOT...LOC 2231Z 009DEG 23KT 3736 8497 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 8:13 PM EDT	Severe Thunderstorm Warning	LMK	Hart	47 min
Jun 11, 8:51 PM EDT	Special Weather Statement	LMK	Adair	54 min
Jun 11, 8:52 PM EDT	Special Weather Statement	LMK	Hardin	53 min
Jun 11, 9:07 PM EDT	Severe Thunderstorm Warning	LMK	Grayson	23 min
Jun 11, 9:17 PM EDT	Special Weather Statement	LMK	Clinton, Cumberland	58 min
Jun 11, 9:32 PM EDT	Severe Thunderstorm Warning	LMK	Edmonson, Grayson	28 min
Jun 11, 9:55 PM EDT	Severe Thunderstorm Warning	LMK	Edmonson, Warren	35 min
Jun 11, 10:30 PM EDT	Special Weather Statement	LMK	Allen, Warren	60 min
Jun 12, 2:09 PM EDT	Special Weather Statement	LMK	Nicholas	36 min
Jun 12, 3:16 PM EDT	Special Weather Statement	LMK	Madison	29 min
Jun 12, 3:50 PM EDT	Areal Flood Advisory	LMK	Clark, Madison	3 hr
Jun 12, 3:56 PM EDT	Special Weather Statement	LMK	Fayette, Garrard, Jessamine, Lincoln, Madison	34 min
Jun 12, 4:14 PM EDT	Special Weather Statement	LMK	Scott	46 min
Jun 12, 4:17 PM EDT	Severe Thunderstorm Warning	LMK	Garrard, Lincoln	28 min
Jun 12, 4:31 PM EDT	Special Weather Statement	LMK	Fayette, Franklin, Garrard, Jessamine, Scott, Woodford	44 min
Jun 12, 4:44 PM EDT	Severe Thunderstorm Warning	LMK	Casey, Lincoln	31 min
Jun 12, 5:11 PM EDT	Special Weather Statement	LMK	Mercer	34 min
Jun 12, 5:15 PM EDT	Areal Flood Advisory	LMK	Garrard, Lincoln, Madison	3 hr
Jun 12, 5:19 PM EDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine, Mercer, Woodford	26 min
Jun 12, 5:43 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Mercer	32 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.