Alert archive / Indiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 290, NWS Louisville, KY

August 7, 20234 counties in Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Aug 7, 2023, 1:13 AM EDT for 4 counties in Indiana. It was in force for 47 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: Aug 7, 2023, 1:13 AM EDT (05:13 UTC)
Expired: Aug 7, 2023, 2:00 AM EDT
In force: 47 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Clark County, IN, Jefferson County, IN, Scott County, IN, Washington County, IN

The radar

The Louisville radar (KLVX), 76 km from the middle of the area, began a volume at 05:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 6, 9:37 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.2 hours before the alert went out and 190 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: 52 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1238 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 35 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 Aug 7, 1:09 AM EDT, 4 minutes earlier.

Area forecast discussion, Aug 7, 1:09 AM EDT, 4 minutes before

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Hazardous weather outlook, Aug 6, 9:51 PM EDT, 3 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
951 PM EDT Sun Aug 6 2023

KYZ023-024-026>028-035>037-039>043-045>049-053>057-061>067-070>078-
081-082-080200-
Hancock-Breckinridge-Ohio-Grayson-Hardin-Franklin-Scott KY-
Harrison KY-Anderson-Woodford-Fayette-Bourbon-Nicholas-Nelson-
Washington KY-Mercer-Jessamine-Clark KY-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 Lewisport, Hawesville, Hardinsburg,
Hartford, Leitchfield, Elizabethtown, Frankfort, Georgetown,
Cynthiana, 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
951 PM EDT Sun Aug 6 2023 /851 PM CDT Sun Aug 6 2023/

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

.DAY ONE...Tonight.

Strong to severe storms will be possible late this evening and
overnight ahead of an approaching cold front. The highest risk of
thunderstorms will be in areas along and north of the Western
Kentucky and Bluegrass Parkways. Damaging winds, heavy rainfall,
and frequent lightning will be the main threats with this
activity.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

An additional round of thunderstorms is likely on Monday, mainly in
areas east of I-65. Some of the storms on Monday could be strong to
severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required tonight and Monday.

INZ076>079-083-084-089>092-KYZ025-029>034-038-080200-
Orange-Washington IN-Scott IN-Jefferson IN-Dubois-Crawford-Perry-
Harrison IN-Floyd-Clark IN-Meade-Bullitt-Jefferson KY-Oldham-Trimble-
Henry-Shelby-Spencer-
Including the cities of Paoli, Salem, Scottsburg, Madison, Jasper,
English, Tell City, Corydon, New Albany, Jeffersonville,
Brandenburg, Shepherdsville, Louisville, La Grange, Bedford, Milton,
New Castle, Shelbyville, and Taylorsville
951 PM EDT Sun Aug 6 2023 /851 PM CDT Sun Aug 6 2023/

...TORNADO WATCH 598 IN EFFECT UNTIL 5 AM EDT /4 AM CDT/ MONDAY...

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

.DAY ONE...Tonight.

Strong to severe storms will be possible late this evening and
overnight ahead of an approaching cold front. A tornado watch is
currently in effect for portions of the region. Please see that
product for the latest information.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

An additional round of thunderstorms is likely on Monday, mainly in
areas east of I-65. Some of the storms on Monday could be strong to
severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required tonight and Monday.

DM

In the hours before

Local storm report, Aug 7, 12:55 AM EDT, 18 minutes before

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Local storm report, Aug 7, 12:58 AM EDT, 15 minutes before

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Local storm report, Aug 7, 12:59 AM EDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 1:01 AM EDT	Severe Thunderstorm Warning	LMK	Meade	29 min
Aug 7, 1:30 AM EDT	Severe Thunderstorm Warning	LMK	Jefferson, Oldham, Shelby, Trimble	45 min
Aug 7, 1:54 AM EDT	Special Weather Statement	LMK	Trimble	36 min
Aug 7, 2:03 AM EDT	Special Weather Statement	LMK	Franklin, Henry, Jefferson, Shelby, Spencer	42 min
Aug 7, 2:54 AM EDT	Special Weather Statement	LMK	Jefferson, Oldham	36 min
Aug 7, 3:28 AM EDT	Special Weather Statement	LMK	Ohio	47 min
Aug 7, 4:01 AM EDT	Special Weather Statement	LMK	Breckinridge	29 min
Aug 7, 4:09 AM EDT	Special Weather Statement	LMK	Henry, Jefferson, Oldham, Shelby	36 min
Aug 7, 4:44 AM EDT	Special Weather Statement	LMK	Jefferson	31 min
Aug 7, 5:13 AM EDT	Special Weather Statement	LMK	Franklin, Shelby	32 min
Aug 7, 5:37 AM EDT	Special Weather Statement	LMK	Franklin, Scott	23 min
Aug 7, 10:49 AM EDT	Special Weather Statement	LMK	Clinton	26 min
Aug 7, 11:14 AM EDT	Special Weather Statement	LMK	Franklin, Scott	46 min
Aug 7, 11:24 AM EDT	Severe Thunderstorm Warning	LMK	Franklin, Scott	36 min
Aug 7, 11:43 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Fayette, Harrison, Scott	32 min
Aug 7, 12:05 PM EDT	Special Weather Statement	LMK	Scott	25 min
Aug 7, 12:15 PM EDT	Special Weather Statement	LMK	Bourbon, Nicholas	45 min
Aug 7, 12:27 PM EDT	Special Weather Statement	LMK	Bourbon, Scott	33 min
Aug 7, 12:52 PM EDT	Special Weather Statement	LMK	Clark, Fayette	38 min
Aug 7, 12:53 PM EDT	Special Weather Statement	LMK	Bourbon, Nicholas	52 min
Aug 7, 12:56 PM EDT	Areal Flood Advisory	LMK	Bourbon, Fayette, Harrison, Nicholas, Scott	2 hr
Aug 7, 1:11 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Fayette	34 min
Aug 7, 12:19 AM EDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois, Orange	41 min
Aug 7, 12:33 AM EDT	Tornado Warning	LMK	Dubois, Orange	27 min
Aug 7, 12:52 AM EDT	Tornado Warning	LMK	Orange, Washington	23 min
Aug 7, 2:00 AM EDT	Special Weather Statement	LMK	Crawford, Perry	30 min
Aug 7, 2:27 AM EDT	Special Weather Statement	LMK	Harrison	33 min
Aug 7, 3:22 AM EDT	Special Weather Statement	LMK	Harrison	23 min
Aug 7, 3:36 AM EDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison, Washington	24 min
Aug 7, 4:00 AM EDT	Special Weather Statement	LMK	Crawford, Floyd	45 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2023 Every severe thunderstorm warning in 2023

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.