Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 124, NWS Louisville, KY

July 6, 2020Henry County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 6, 2020, 5:54 PM EDT for Henry County, Kentucky. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 6, 2020, 5:54 PM EDT (21:54 UTC)
Expired: Jul 6, 2020, 6:30 PM EDT
In force: 36 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Henry County, KY

The radar

The Louisville radar (KLVX), 89 km from the middle of the area, began a volume at 21:58 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, 9.9 hours before the alert went out and 158 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: 532 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1524 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 6, 3:04 PM EDT, 2 hours 50 minutes earlier.

Area forecast discussion, Jul 6, 3:04 PM EDT, 2 hours 50 minutes before

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Hazardous weather outlook, Jul 6, 3:08 PM EDT, 2 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
308 PM EDT Mon Jul 6 2020

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-071915-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-
Oldham-Trimble-Henry-Shelby-Franklin-Spencer-Anderson-Woodford-
Fayette-Bourbon-Nicholas-Nelson-Mercer-Jessamine-Larue-Marion-Boyle-
Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell-
Cumberland-Clinton-
Including the cities of Paoli, Salem, Scottsburg, Madison, Jasper,
English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport,
Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield,
Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford,
Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana,
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle,
Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester,
Hodgenville, Lebanon, Danville, Lancaster, Richmond, Morgantown,
Brownsville, Horse Cave, Greensburg, Campbellsville, Liberty,
Stanford, Russellville, Bowling Green, Franklin, Providence,
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown,
Burkesville, and Albany
308 PM EDT Mon Jul 6 2020 /208 PM CDT Mon Jul 6 2020/

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Tonight.

Isolated to scattered thunderstorms are possible again this afternoon
and evening. A few of the storms may become strong with the main
threats being heavy rainfall, frequent lightning, and gusty winds. A
few localized flooding concerns may arise along with a few localized
damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Scattered afternoon thunderstorms will be possible each day. Main
hazards will be isolated heavy rainfall that could lead to localized
flooding, locally gusty winds, and frequent lightning. Most flood
deaths occur in automobiles. Remember...Turn Around, Don't Drown!

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report flooding or wind damage to the
National Weather Service throughout the week.

KDW

In the hours before

Special weather statement, Jul 6, 3:40 PM EDT, 2 hours 14 minutes before

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Special weather statement, Jul 6, 4:02 PM EDT, 1 hour 52 minutes before

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Special weather statement, Jul 6, 4:30 PM EDT, 1 hour 24 minutes before

Special Weather Statement
National Weather Service Louisville KY
430 PM EDT Mon Jul 6 2020

KYZ036-037-062115-
Scott-Harrison-
430 PM EDT Mon Jul 6 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL SCOTT AND
NORTHERN HARRISON COUNTIES...

At 430 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 8 miles north of Cynthiana to 11 miles
south of Williamstown. Movement was north at 10 mph.

Winds in excess of 40 mph and half inch hail are possible with these
storms.

Locations impacted include...
Breckinridge, Sadieville, Berry, Robinson, Colemansville, Oddville,
Renaker, Rutland, Boyd and Stonewall.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3847 8416 3839 8459 3843 8463 3849 8456
      3851 8452 3851 8449 3854 8448 3853 8446
      3854 8443 3857 8441 3858 8420 3857 8420
      3856 8422 3855 8421 3856 8417 3850 8418
      3850 8416 3849 8417 3849 8416
TIME...MOT...LOC 2030Z 158DEG 7KT 3852 8428 3847 8453

RJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:46 PM EDT	Special Weather Statement	LMK	Woodford	29 min
Jul 5, 8:47 PM EDT	Special Weather Statement	LMK	Madison	28 min
Jul 5, 9:31 PM EDT	Special Weather Statement	LMK	Woodford	14 min
Jul 5, 9:57 PM EDT	Special Weather Statement	LMK	Anderson	18 min
Jul 5, 10:27 PM EDT	Special Weather Statement	LMK	Anderson	33 min
Jul 5, 11:03 PM EDT	Special Weather Statement	LMK	Spencer	27 min
Jul 6, 12:01 AM EDT	Special Weather Statement	LMK	Trimble	14 min
Jul 6, 9:28 AM EDT	Areal Flood Advisory	LMK	Logan	3 hr
Jul 6, 10:43 AM EDT	Areal Flood Advisory	LMK	Logan	3 hr
Jul 6, 3:40 PM EDT	Special Weather Statement	LMK	Nicholas	35 min
Jul 6, 4:02 PM EDT	Special Weather Statement	LMK	Scott	28 min
Jul 6, 4:24 PM EDT	Areal Flood Advisory	LMK	Harrison, Scott	113 min
Jul 6, 4:30 PM EDT	Special Weather Statement	LMK	Harrison	45 min
Jul 6, 5:18 PM EDT	Areal Flood Advisory	LMK	Fayette	97 min
Jul 6, 5:41 PM EDT	Areal Flood Advisory	LMK	Franklin	101 min
Jul 6, 6:11 PM EDT	Special Weather Statement	LMK	Jefferson	34 min
Jul 6, 6:27 PM EDT	Areal Flood Advisory	LMK	Henry	2 hr
Jul 6, 6:42 PM EDT	Special Weather Statement	LMK	Jefferson	33 min
Jul 6, 7:08 PM EDT	Special Weather Statement	LMK	Grayson, Hardin	52 min
Jul 6, 7:50 PM EDT	Severe Thunderstorm Warning	LMK	Grayson	25 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2020 Every severe thunderstorm warning in 2020

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.