Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 94, NWS Louisville, KY

August 10, 2021Fayette County, Woodford County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 10, 2021, 12:39 PM EDT for Fayette County, Woodford County, Kentucky. It was in force for 21 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
Aug 10, 2021, 12:39 PM EDT (16:39 UTC)
Expired
Aug 10, 2021, 1:00 PM EDT
In force
21 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Fayette County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 118 km from the middle of the area, began a volume at 16:40 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.7 hours before the alert went out and 164 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2021-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1366 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2021-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1366 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted.

406 
WUUS53 KLMK 101639
SVRLMK
KYC067-239-101715-
/O.NEW.KLMK.SV.W.0094.210810T1639Z-210810T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
1239 PM EDT Tue Aug 10 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Northeastern Woodford County in central Kentucky...
  Northwestern Fayette County in central Kentucky...

* Until 115 PM EDT.

* At 1238 PM EDT, a severe thunderstorm was located near Versailles,
  moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Cardinal Hill around 1255 PM EDT.

Other locations in the path of this severe thunderstorm include
Lexington, Highlands and Meadowthorpe.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3801 8451 3806 8470 3812 8469 3813 8464
      3812 8463 3812 8465 3811 8463 3813 8462
      3815 8449
TIME...MOT...LOC 1638Z 276DEG 19KT 3810 8465 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CG
1 follow-up statement
680 
WWUS53 KLMK 101700
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
100 PM EDT Tue Aug 10 2021

KYC067-239-101710-
/O.CAN.KLMK.SV.W.0094.000000T0000Z-210810T1715Z/
Woodford KY-Fayette KY-
100 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WOODFORD AND
NORTHWESTERN FAYETTE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However heavy rain and 
frequent lightning is still possible with this thunderstorm.

LAT...LON 3801 8451 3806 8470 3812 8469 3813 8464
      3812 8463 3812 8465 3811 8463 3813 8462
      3815 8449
TIME...MOT...LOC 1655Z 276DEG 19KT 3809 8450 

$$

JML

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:12 PM EDTSpecial Weather StatementLMKWarren33 min
Aug 10, 10:51 AM EDTSpecial Weather StatementLMKHenry24 min
Aug 10, 11:14 AM EDTSpecial Weather StatementLMKFranklin16 min
Aug 10, 11:52 AM EDTSpecial Weather StatementLMKAnderson23 min
Aug 10, 12:14 PM EDTSevere Thunderstorm WarningLMKWoodford31 min
Aug 10, 12:38 PM EDTSpecial Weather StatementLMKRussell22 min
Aug 10, 12:54 PM EDTSpecial Weather StatementLMKFayette21 min
Aug 10, 1:15 PM EDTSpecial Weather StatementLMKMadison30 min
Aug 10, 2:27 PM EDTAreal Flood AdvisoryLMKClinton, Cumberland39 min
Aug 10, 3:32 PM EDTHeat AdvisoryLMKAllen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 11 more29 hr
Aug 10, 3:32 PM EDTHeat AdvisoryLMKAllen, Anderson, Barren, Breckinridge, Bullitt, Butler and 25 more53 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.