Alert archive / Kentucky / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 52, NWS Louisville, KY

May 23, 2019Shelby County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at May 23, 2019, 5:31 PM EDT for Shelby County, Kentucky. It was in force for 19 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: May 23, 2019, 5:31 PM EDT (21:31 UTC)
Expired: May 23, 2019, 5:50 PM EDT
In force: 19 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

County Shelby County, KY

The radar

The Louisville radar (KLVX), 71 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 181 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: 1205 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1067 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.8

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 May 23, 3:40 PM EDT, 1 hour 51 minutes earlier.

Area forecast discussion, May 23, 3:40 PM EDT, 1 hour 51 minutes before

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Hazardous weather outlook, May 23, 3:47 PM EDT, 1 hour 44 minutes before

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In the hours before

Special weather statement, May 23, 3:26 PM EDT, 2 hours 5 minutes before

Special Weather Statement
National Weather Service Louisville KY
326 PM EDT Thu May 23 2019

KYZ033-034-232000-
Shelby-Henry-
326 PM EDT Thu May 23 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SHELBY AND SOUTHERN
HENRY COUNTIES...

At 325 PM EDT, a strong thunderstorm was located near New Castle,
moving east at 30 mph.

Wind gusts up to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
New Castle, Eminence, Pleasureville, Smithfield, North Pleasureville,
Defoe, Cropper, Bethlehem, Bagdad, and Elmburg.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3839 8492 3836 8493 3834 8499 3833 8496
      3827 8500 3824 8500 3832 8532 3836 8528
      3837 8529 3846 8524
TIME...MOT...LOC 1925Z 278DEG 25KT 3834 8520

13

Special weather statement, May 23, 4:09 PM EDT, 1 hour 22 minutes before

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Special weather statement, May 23, 4:38 PM EDT, 53 minutes before

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Local storm report, May 23, 4:51 PM EDT, 40 minutes before

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Special weather statement, May 23, 4:55 PM EDT, 36 minutes before

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Special weather statement, May 23, 5:19 PM EDT, 12 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
May 23, 9:32 AM EDT	Special Weather Statement	LMK	Franklin, Harrison, Scott	28 min
May 23, 3:14 PM EDT	Special Weather Statement	LMK	Oldham	31 min
May 23, 3:17 PM EDT	Severe Thunderstorm Warning	LMK	Henry, Oldham	28 min
May 23, 3:26 PM EDT	Special Weather Statement	LMK	Henry	34 min
May 23, 3:38 PM EDT	Severe Thunderstorm Warning	LMK	Franklin, Henry, Shelby	37 min
May 23, 4:09 PM EDT	Special Weather Statement	LMK	Franklin, Scott	36 min
May 23, 4:38 PM EDT	Special Weather Statement	LMK	Scott	37 min
May 23, 4:55 PM EDT	Special Weather Statement	LMK	Oldham	35 min
May 23, 5:00 PM EDT	Severe Thunderstorm Warning	LMK	Henry, Oldham, Shelby	30 min
May 23, 5:16 PM EDT	Severe Thunderstorm Warning	LMK	Henry	29 min
May 23, 5:19 PM EDT	Special Weather Statement	LMK	Shelby	26 min
May 23, 6:13 PM EDT	Special Weather Statement	LMK	Harrison	17 min
May 23, 7:14 PM EDT	Special Weather Statement	LMK	Bullitt	31 min
May 23, 7:50 PM EDT	Special Weather Statement	LMK	Bullitt, Spencer	25 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2019 Every severe thunderstorm warning in 2019

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.