Alert archive / Kentucky / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 93, NWS Louisville, KY

August 10, 2021Woodford County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 10, 2021, 12:14 PM EDT for Woodford County, Kentucky. It was in force for 31 min. 3 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: Aug 10, 2021, 12:14 PM EDT (16:14 UTC)
Expired: Aug 10, 2021, 12:45 PM EDT
In force: 31 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Woodford County, KY

The radar

The Louisville radar (KLVX), 110 km from the middle of the area, began a volume at 16:16 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
Aug 10, 12:35 PM EDT	HAIL 0.75	1 N Versailles, KY	DIME (0.75 IN.).
Aug 10, 12:40 PM EDT	HAIL 1	1 N Versailles, KY	DELAYED REPORT...EM RELAYED REPORT OF HAIL, RANGING IN SIZE FROM PEAS TO QUARTERS ON CHESTNUT LN IN VERSAILLES. IN ADDITION A TREE TANGLED ITSELF UP IN POWER LINES NEARBY ON PAIGE CT. TIME ESTIMATED BASED ON RADAR.
Aug 10, 12:45 PM EDT	HAIL 0.88	1 Sse Midway, KY

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, 4.2 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-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: 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.

857 
WUUS53 KLMK 101614
SVRLMK
KYC239-101645-
/O.NEW.KLMK.SV.W.0093.210810T1614Z-210810T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
1214 PM EDT Tue Aug 10 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Northern Woodford County in central Kentucky...

* Until 1245 PM EDT.

* At 1214 PM EDT, a severe thunderstorm was located near Frankfort,
  moving east at 15 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...
  Versailles around 1230 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3803 8466 3808 8483 3810 8484 3809 8486
      3816 8483 3818 8469 3817 8468 3818 8468
      3818 8465 3817 8465 3817 8466 3816 8466
      3816 8465 3815 8464
TIME...MOT...LOC 1614Z 276DEG 15KT 3813 8481 

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

$$

CG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 8:12 PM EDT	Special Weather Statement	LMK	Warren	33 min
Aug 10, 10:51 AM EDT	Special Weather Statement	LMK	Henry	24 min
Aug 10, 11:14 AM EDT	Special Weather Statement	LMK	Franklin	16 min
Aug 10, 11:52 AM EDT	Special Weather Statement	LMK	Anderson	23 min
Aug 10, 12:38 PM EDT	Special Weather Statement	LMK	Russell	22 min
Aug 10, 12:39 PM EDT	Severe Thunderstorm Warning	LMK	Fayette, Woodford	21 min
Aug 10, 12:54 PM EDT	Special Weather Statement	LMK	Fayette	21 min
Aug 10, 1:15 PM EDT	Special Weather Statement	LMK	Madison	30 min
Aug 10, 2:27 PM EDT	Areal Flood Advisory	LMK	Clinton, Cumberland	39 min
Aug 10, 3:32 PM EDT	Heat Advisory	LMK	Allen, Barren, Breckinridge, Bullitt, Butler, Edmonson and 11 more	29 hr
Aug 10, 3:32 PM EDT	Heat Advisory	LMK	Allen, Anderson, Barren, Breckinridge, Bullitt, Butler and 25 more	53 hr

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.