Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 43, NWS Louisville, KY

June 12, 20214 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jun 12, 2021, 5:19 PM EDT for 4 counties in Kentucky. It was in force for 26 min. 2 reports 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, 5:19 PM EDT (21:19 UTC)
Expired: Jun 12, 2021, 5:45 PM EDT
In force: 26 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Garrard County, KY, Jessamine County, KY, Mercer County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 101 km from the middle of the area, began a volume at 21:21 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, 5:20 PM EDT	TSTM WND DMG	3 Nnw Nonesuch, KY	TREE DOWN ON POWER LINE NEAR OREGON RD AND HIFNER RD. TIME ESTIMATED FROM RADAR.
Jun 12, 5:23 PM EDT	TSTM WND DMG	Salvisa, KY	TREE AND LARGE LIMB DOWN. REPORTED VIA TWITTER.

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.3 hours before the alert went out and 189 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: 656 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

655 
WUUS53 KLMK 122119
SVRLMK
KYC079-113-167-239-122145-
/O.NEW.KLMK.SV.W.0043.210612T2119Z-210612T2145Z/

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

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Central Mercer County in central Kentucky...
  Southern Woodford County in central Kentucky...
  Northwestern Garrard County in central Kentucky...
  Western Jessamine County in central Kentucky...

* Until 545 PM EDT.

* At 518 PM EDT, severe thunderstorms were located from near Blue 
  Grass Field to 7 miles south of Versailles to near Lawrenceburg, 
  moving south at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Harrodsburg, Versailles, Ebenezer, Talmage, Braxton, and Jackson.

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 3775 8484 3778 8496 3794 8490 3795 8489
      3794 8489 3794 8488 3797 8480 3797 8482
      3799 8482 3798 8477 3801 8466 3800 8466
      3800 8464 3779 8463
TIME...MOT...LOC 2118Z 015DEG 23KT 3796 8465 3795 8478 3797 8486 

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

13

1 follow-up statement

524 
WWUS53 KLMK 122133
SVSLMK

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

KYC079-113-167-239-122145-
/O.CON.KLMK.SV.W.0043.000000T0000Z-210612T2145Z/
Mercer KY-Woodford KY-Garrard KY-Jessamine KY-
533 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR CENTRAL MERCER...SOUTH CENTRAL WOODFORD...NORTHWESTERN GARRARD
AND SOUTHWESTERN JESSAMINE COUNTIES...

At 532 PM EDT, severe thunderstorms were from near Nicholasville to 
7 miles north of Harrodsburg to 10 miles south of Lawrenceburg, 
moving south at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Harrodsburg, Wilmore, Oregon, Shakertown, Vanarsdell, Ebenezer,
Talmage, Bohon, High Bridge, and Nonesuch.

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 3775 8484 3778 8496 3792 8490 3791 8480
      3790 8466 3790 8464 3779 8463
TIME...MOT...LOC 2132Z 013DEG 25KT 3787 8467 3786 8480 3788 8488 

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

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, 5:43 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Mercer	32 min
Jun 12, 6:10 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Casey, Marion	23 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.