Alert archive / Kentucky / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 257, NWS Louisville, KY

July 18, 2023Casey County, Lincoln County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 18, 2023, 4:22 AM EDT for Casey County, Lincoln County, Kentucky. It was in force for 38 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 18, 2023, 4:22 AM EDT (08:22 UTC)
Expired: Jul 18, 2023, 5:00 AM EDT
In force: 38 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Casey County, KY, Lincoln County, KY

The radar

The Louisville radar (KLVX), 120 km from the middle of the area, began a volume at 08:21 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.4 hours before the alert went out and 213 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: 1308 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1604 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

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 18, 3:05 AM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Jul 18, 3:05 AM EDT, 1 hour 17 minutes before

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Hazardous weather outlook, Jul 18, 3:16 AM EDT, 1 hour 6 minutes before

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In the hours before

Special weather statement, Jul 18, 2:32 AM EDT, 1 hour 50 minutes before

Special Weather Statement
National Weather Service Louisville KY
232 AM EDT Tue Jul 18 2023

KYZ028>030-180700-
Jefferson KY-Bullitt KY-Hardin KY-
232 AM EDT Tue Jul 18 2023

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN JEFFERSON...
NORTHERN HARDIN AND BULLITT COUNTIES THROUGH 300 AM EDT...

At 232 AM EDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Valley Station, moving east at 25 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Shepherdsville, Pioneer Village, Valley Station, Mount Washington,
Lebanon Junction, Hebron Estates, West Point, Fox Chase, Brooks and
Cupio.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3806 8558 3782 8569 3798 8596 3800 8595
      3802 8592 3806 8592 3810 8590
TIME...MOT...LOC 0632Z 287DEG 23KT 3799 8588

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

CJP

Special weather statement, Jul 18, 3:02 AM EDT, 1 hour 20 minutes before

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Local storm report, Jul 18, 3:07 AM EDT, 1 hour 15 minutes before

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Local storm report, Jul 18, 3:35 AM EDT, 47 minutes before

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Special weather statement, Jul 18, 3:46 AM EDT, 36 minutes before

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Special weather statement, Jul 18, 4:13 AM EDT, 9 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
Jul 17, 10:35 PM EDT	Special Weather Statement	LMK	Nicholas	25 min
Jul 17, 10:56 PM EDT	Severe Thunderstorm Warning	LMK	Trimble	34 min
Jul 17, 11:54 PM EDT	Areal Flood Advisory	LMK	Trimble	3 hr
Jul 18, 12:57 AM EDT	Severe Thunderstorm Warning	LMK	Jefferson, Oldham, Shelby	18 min
Jul 18, 1:20 AM EDT	Special Weather Statement	LMK	Shelby	25 min
Jul 18, 1:52 AM EDT	Severe Thunderstorm Warning	LMK	Jefferson, Oldham, Shelby, Spencer	25 min
Jul 18, 2:15 AM EDT	Severe Thunderstorm Warning	LMK	Shelby	18 min
Jul 18, 2:22 AM EDT	Areal Flood Advisory	LMK	Anderson, Bourbon, Fayette, Franklin, Jefferson, Oldham and 3 more	3 hr
Jul 18, 2:26 AM EDT	Special Weather Statement	LMK	Fayette, Jessamine	34 min
Jul 18, 2:32 AM EDT	Special Weather Statement	LMK	Bullitt	28 min
Jul 18, 2:38 AM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Hardin	23 min
Jul 18, 2:59 AM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Nelson	31 min
Jul 18, 3:02 AM EDT	Special Weather Statement	LMK	Garrard, Madison	43 min
Jul 18, 3:09 AM EDT	Severe Thunderstorm Warning	LMK	Fayette, Jessamine, Woodford	36 min
Jul 18, 3:28 AM EDT	Severe Thunderstorm Warning	LMK	Marion, Nelson, Washington	32 min
Jul 18, 3:32 AM EDT	Areal Flood Advisory	LMK	Anderson, Jessamine, Mercer, Woodford	2 hr
Jul 18, 3:46 AM EDT	Special Weather Statement	LMK	Madison	29 min
Jul 18, 3:54 AM EDT	Severe Thunderstorm Warning	LMK	Boyle, Casey, Lincoln	36 min
Jul 18, 4:13 AM EDT	Special Weather Statement	LMK	Casey	47 min
Jul 18, 4:26 AM EDT	Special Weather Statement	LMK	Garrard	34 min
Jul 18, 5:01 AM EDT	Special Weather Statement	LMK	Russell	29 min
Jul 18, 10:02 AM EDT	Severe Thunderstorm Warning	LMK	Meade	43 min
Jul 18, 10:44 AM EDT	Severe Thunderstorm Warning	LMK	Meade	14 min
Jul 18, 12:30 PM EDT	Special Weather Statement	LMK	Hart	30 min
Jul 18, 12:31 PM EDT	Flood Watch	LMK	Allen, Butler, Edmonson, Grayson, Logan, Ohio and 2 more	21 hr
Jul 18, 12:57 PM EDT	Special Weather Statement	LMK	Meade	18 min
Jul 18, 1:09 PM EDT	Special Weather Statement	LMK	Metcalfe	36 min
Jul 18, 1:14 PM EDT	Special Weather Statement	LMK	Hardin	16 min
Jul 18, 1:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	LMK	Barren, Green, Hart, Metcalfe	40 min
Jul 18, 1:32 PM EDT	Special Weather Statement	LMK	Bullitt	28 min
Jul 18, 1:54 PM EDT	Special Weather Statement	LMK	Metcalfe	21 min
Jul 18, 1:57 PM EDT	Special Weather Statement	LMK	Hardin	18 min
Jul 18, 2:02 PM EDT	Special Weather Statement	LMK	Shelby	28 min
Jul 18, 2:03 PM EDT	Special Weather Statement	LMK	Anderson	27 min
Jul 18, 2:17 PM EDT	Special Weather Statement	LMK	Casey	13 min
Jul 18, 2:28 PM EDT	Special Weather Statement	LMK	Mercer	32 min
Jul 18, 2:30 PM EDT	Special Weather Statement	LMK	Shelby	30 min
Jul 18, 2:33 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Lincoln	42 min
Jul 18, 2:43 PM EDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine, Mercer, Woodford	32 min
Jul 18, 2:54 PM EDT	Special Weather Statement	LMK	Fayette, Woodford	36 min
Jul 18, 3:05 PM EDT	Special Weather Statement	LMK	Lincoln	25 min
Jul 18, 3:10 PM EDT	Special Weather Statement	LMK	Garrard	35 min
Jul 18, 3:11 PM EDT	Special Weather Statement	LMK	Clark, Fayette	34 min
Jul 18, 3:26 PM EDT	Special Weather Statement	LMK	Bourbon	34 min
Jul 18, 3:35 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Logan	55 min
Jul 18, 3:37 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Madison, Nicholas	38 min
Jul 18, 3:53 PM EDT	Special Weather Statement	LMK	Larue	37 min
Jul 18, 4:13 PM EDT	Severe Thunderstorm Warning	LMK	Larue, Marion, Taylor	17 min
Jul 18, 4:15 PM EDT	Severe Thunderstorm Warning	LMK	Allen, Butler, Edmonson, Logan, Simpson, Warren	60 min
Jul 18, 5:02 PM EDT	Special Weather Statement	LMK	Breckinridge, Hancock	28 min
Jul 18, 5:03 PM EDT	Special Weather Statement	LMK	Allen, Barren, Edmonson, Hart	42 min
Jul 18, 5:27 PM EDT	Special Weather Statement	LMK	Washington	33 min
Jul 18, 5:36 PM EDT	Special Weather Statement	LMK	Breckinridge	24 min
Jul 18, 5:37 PM EDT	Areal Flood Advisory	LMK	Breckinridge, Hancock, Ohio	3 hr
Jul 18, 5:42 PM EDT	Severe Thunderstorm Warning	LMK	Marion, Washington	18 min
Jul 18, 5:44 PM EDT	Special Weather Statement	LMK	Adair, Cumberland, Green, Hart, Larue, Metcalfe and 2 more	46 min
Jul 18, 5:47 PM EDT	Special Weather Statement	LMK	Meade	28 min
Jul 18, 6:09 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	36 min
Jul 18, 6:13 PM EDT	Special Weather Statement	LMK	Hardin	32 min
Jul 18, 6:28 PM EDT	Special Weather Statement	LMK	Adair, Casey, Clinton, Cumberland, Larue, Marion and 3 more	62 min
Jul 18, 6:31 PM EDT	Areal Flood Advisory	LMK	Marion, Nelson, Washington	3 hr
Jul 18, 6:39 PM EDT	Special Weather Statement	LMK	Jefferson	36 min
Jul 18, 6:42 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson	18 min
Jul 18, 7:01 PM EDT	Flash Flood Warning	LMK	Marion, Nelson, Washington	3 hr
Jul 18, 7:06 PM EDT	Areal Flood Advisory	LMK	Jefferson, Oldham, Shelby	3 hr
Jul 18, 7:10 PM EDT	Special Weather Statement	LMK	Boyle, Garrard	35 min
Jul 18, 7:14 PM EDT	Flash Flood Warning	LMK	Jefferson, Oldham, Shelby	3 hr
Jul 17, 10:41 PM EDT	Special Weather Statement	LMK	Jefferson	34 min
Jul 18, 12:21 AM EDT	Severe Thunderstorm Warning	LMK	Washington	24 min
Jul 18, 12:27 AM EDT	Special Weather Statement	LMK	Clark	33 min
Jul 18, 12:45 AM EDT	Special Weather Statement	LMK	Scott	30 min
Jul 18, 1:15 AM EDT	Special Weather Statement	LMK	Clark	45 min
Jul 18, 1:55 AM EDT	Special Weather Statement	LMK	Washington	35 min
Jul 18, 9:16 AM EDT	Special Weather Statement	LMK	Clark	29 min
Jul 18, 9:50 AM EDT	Special Weather Statement	LMK	Crawford	25 min
Jul 18, 10:23 AM EDT	Special Weather Statement	LMK	Harrison	22 min
Jul 18, 10:46 AM EDT	Special Weather Statement	LMK	Floyd	29 min
Jul 18, 5:51 PM EDT	Special Weather Statement	LMK	Floyd	24 min
Jul 18, 6:17 PM EDT	Special Weather Statement	LMK	Harrison	28 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 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.