Alert archive / Kentucky / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 199, NWS Louisville, KY

August 20, 20194 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 20, 2019, 5:05 PM EDT for 4 counties in Kentucky. It was in force for 25 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 20, 2019, 5:05 PM EDT (21:05 UTC)
Expired: Aug 20, 2019, 5:30 PM EDT
In force: 25 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bullitt County, KY, Grayson County, KY, Hardin County, KY, Nelson County, KY

The radar

The Louisville radar (KLVX), 28 km from the middle of the area, began a volume at 21:07 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 20, 2:53 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.1 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: 1377 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1142 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 64 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 20, 4:55 PM EDT, 10 minutes earlier.

Area forecast discussion, Aug 20, 4:55 PM EDT, 10 minutes before

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Hazardous weather outlook, Aug 20, 3:22 PM EDT, 1 hour 43 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
322 PM EDT Tue Aug 20 2019

KYZ035>037-039>043-046>049-054>057-061>067-070>078-081-082-211930-
Franklin-Scott-Harrison-Anderson-Woodford-Fayette-Bourbon-Nicholas-
Washington-Mercer-Jessamine-Clark-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 Frankfort, Georgetown, Cynthiana,
Lawrenceburg, Versailles, Lexington, Paris, Carlisle, Springfield,
Harrodsburg, Nicholasville, Winchester, 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
322 PM EDT Tue Aug 20 2019 /222 PM CDT Tue Aug 20 2019/

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

.DAY ONE...Tonight.

Scattered thunderstorms will produce frequent cloud-to-ground
lightning, brief heavy rainfall, and locally gusty winds through
early evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Additional rounds of thunderstorms are expected Wednesday night
through early Friday. Slow moving storms could produce heavy
rainfall, which could result in localized flooding.

Outside of these cooling rains, heat index values Wednesday afternoon
will reach around 100 degrees, possibly approaching 105 in the
Louisville and Bowling Green metro areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested this afternoon and evening.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

INZ076>079-083-084-089>092-KYZ023>034-038-045-053-211930-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-
Oldham-Trimble-Henry-Shelby-Spencer-Nelson-Larue-
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, Taylorsville, Bardstown,
and Hodgenville
322 PM EDT Tue Aug 20 2019 /222 PM CDT Tue Aug 20 2019/

...SEVERE THUNDERSTORM WATCH 604 IN EFFECT UNTIL 9 PM EDT /8 PM CDT/
THIS EVENING...

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

.DAY ONE...Tonight.

A line of strong to severe storms late this afternoon and early this
evening will produce locally damaging winds, mainly in southern
Indiana and north central Kentucky. Frequent cloud-to-ground
lightning will also be a hazard from these storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Additional rounds of thunderstorms are expected Wednesday night
through early Friday. Slow moving storms could produce heavy
rainfall, which could result in localized flooding.

Outside of these cooling rains, it will be hot during peak heating
Wednesday afternoon. Look for peak heat indices generally around 100
degrees, possibly approaching 105 in the Louisville and Bowling
Green metro areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested this afternoon and evening.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

RAS/AMS

In the hours before

Special weather statement, Aug 20, 4:21 PM EDT, 44 minutes before

Special Weather Statement
National Weather Service Louisville KY
421 PM EDT Tue Aug 20 2019

INZ077>079-090>092-KYZ029>034-202100-
Washington-Jefferson-Floyd-Clark-Scott-Harrison-Jefferson-Oldham-
Shelby-Bullitt-Henry-Trimble-
421 PM EDT Tue Aug 20 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN
HARRISON...SOUTHERN JEFFERSON...CLARK...FLOYD...SCOTT...SOUTHEASTERN
WASHINGTON...OLDHAM...NORTHWESTERN SHELBY...TRIMBLE...WESTERN
HENRY...JEFFERSON AND NORTH CENTRAL BULLITT COUNTIES...

At 420 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles west of Madison to 6 miles east
of Corydon. Movement was east at 40 mph.

Wind gusts up to 45 mph are possible with these storms or the gust
front ahead of the storms.

Locations impacted include...
Louisville, Jeffersonville, New Albany, Jeffersontown, St. Matthews,
Shively, Madison, Lyndon, La Grange and Middletown.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3873 8520 3869 8520 3874 8527 3874 8533
      3863 8523 3858 8521 3860 8508 3856 8506
      3857 8504 3857 8503 3802 8567 3826 8610
      3879 8581 3880 8552
TIME...MOT...LOC 2020Z 291DEG 34KT 3873 8550 3825 8601

AMS

Special weather statement, Aug 20, 4:24 PM EDT, 41 minutes before

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Local storm report, Aug 20, 4:40 PM EDT, 25 minutes before

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Special weather statement, Aug 20, 4:41 PM EDT, 24 minutes before

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Special weather statement, Aug 20, 4:55 PM EDT, 10 minutes before

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Special weather statement, Aug 20, 5:01 PM EDT, 4 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 19, 9:36 PM EDT	Special Weather Statement	LMK	Fayette	24 min
Aug 19, 10:28 PM EDT	Special Weather Statement	LMK	Jessamine	47 min
Aug 20, 1:29 PM EDT	Special Weather Statement	LMK	Trimble	31 min
Aug 20, 1:33 PM EDT	Special Weather Statement	LMK	Larue	27 min
Aug 20, 1:46 PM EDT	Special Weather Statement	LMK	Cumberland	29 min
Aug 20, 2:32 PM EDT	Special Weather Statement	LMK	Scott	28 min
Aug 20, 2:44 PM EDT	Severe Thunderstorm Warning	LMK	Harrison, Scott	31 min
Aug 20, 2:46 PM EDT	Special Weather Statement	LMK	Casey	29 min
Aug 20, 2:54 PM EDT	Areal Flood Advisory	LMK	Adair	3 hr
Aug 20, 2:57 PM EDT	Special Weather Statement	LMK	Harrison	33 min
Aug 20, 3:11 PM EDT	Special Weather Statement	LMK	Marion	34 min
Aug 20, 3:13 PM EDT	Special Weather Statement	LMK	Casey	32 min
Aug 20, 3:19 PM EDT	Special Weather Statement	LMK	Butler	26 min
Aug 20, 3:49 PM EDT	Special Weather Statement	LMK	Boyle	26 min
Aug 20, 3:52 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock, Meade	38 min
Aug 20, 4:00 PM EDT	Special Weather Statement	LMK	Clark	30 min
Aug 20, 4:01 PM EDT	Special Weather Statement	LMK	Hancock	14 min
Aug 20, 4:10 PM EDT	Special Weather Statement	LMK	Anderson	35 min
Aug 20, 4:12 PM EDT	Special Weather Statement	LMK	Ohio	33 min
Aug 20, 4:18 PM EDT	Special Weather Statement	LMK	Breckinridge, Meade	42 min
Aug 20, 4:21 PM EDT	Special Weather Statement	LMK	Jefferson, Oldham, Trimble	39 min
Aug 20, 4:24 PM EDT	Special Weather Statement	LMK	Bourbon	36 min
Aug 20, 4:33 PM EDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Shelby, Spencer	27 min
Aug 20, 4:39 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson, Hardin, Meade	36 min
Aug 20, 4:41 PM EDT	Special Weather Statement	LMK	Nelson	34 min
Aug 20, 4:44 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Grayson, Ohio	31 min
Aug 20, 4:50 PM EDT	Areal Flood Advisory	LMK	Anderson, Shelby	3 hr
Aug 20, 4:55 PM EDT	Special Weather Statement	LMK	Anderson, Bullitt, Franklin, Henry, Jefferson, Oldham and 4 more	35 min
Aug 20, 5:01 PM EDT	Special Weather Statement	LMK	Nelson	29 min
Aug 20, 5:15 PM EDT	Severe Thunderstorm Warning	LMK	Butler, Edmonson, Logan, Ohio, Warren	45 min
Aug 20, 5:17 PM EDT	Special Weather Statement	LMK	Edmonson, Grayson, Hart	28 min
Aug 20, 5:21 PM EDT	Special Weather Statement	LMK	Larue, Nelson, Washington	39 min
Aug 20, 5:27 PM EDT	Special Weather Statement	LMK	Anderson, Franklin, Harrison, Scott, Spencer, Woodford	33 min
Aug 20, 5:29 PM EDT	Special Weather Statement	LMK	Hardin	31 min
Aug 20, 5:36 PM EDT	Special Weather Statement	LMK	Barren, Green, Hart, Simpson, Warren	24 min
Aug 20, 5:45 PM EDT	Special Weather Statement	LMK	Logan	30 min
Aug 20, 5:50 PM EDT	Severe Thunderstorm Warning	LMK	Simpson, Warren	25 min
Aug 20, 5:58 PM EDT	Special Weather Statement	LMK	Anderson, Bourbon, Boyle, Fayette, Franklin, Harrison and 7 more	47 min
Aug 20, 5:58 PM EDT	Severe Thunderstorm Warning	LMK	Green, Hart	32 min
Aug 20, 6:06 PM EDT	Severe Thunderstorm Warning	LMK	Green, Larue, Marion, Nelson, Taylor	24 min
Aug 20, 6:09 PM EDT	Severe Thunderstorm Warning	LMK	Allen, Simpson, Warren	12 min
Aug 20, 6:17 PM EDT	Special Weather Statement	LMK	Metcalfe	28 min
Aug 20, 6:30 PM EDT	Severe Thunderstorm Warning	LMK	Barren, Metcalfe	30 min
Aug 20, 6:43 PM EDT	Special Weather Statement	LMK	Casey	32 min
Aug 20, 7:17 PM EDT	Special Weather Statement	LMK	Monroe	28 min
Aug 20, 1:59 PM EDT	Special Weather Statement	LMK	Jefferson	31 min
Aug 20, 2:42 PM EDT	Special Weather Statement	LMK	Dubois, Orange	63 min
Aug 20, 3:20 PM EDT	Severe Thunderstorm Warning	LMK	Orange	25 min
Aug 20, 3:22 PM EDT	Severe Thunderstorm Warning	LMK	Dubois	38 min
Aug 20, 3:30 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois, Orange, Perry	45 min
Aug 20, 3:45 PM EDT	Special Weather Statement	LMK	Orange	30 min
Aug 20, 3:56 PM EDT	Special Weather Statement	LMK	Jefferson	49 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.