Alert archive / Kentucky / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 201, NWS Louisville, KY

August 20, 2019Simpson County, Warren County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 20, 2019, 4:50 PM CDT for Simpson County, Warren County, 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, 4:50 PM CDT (21:50 UTC)
Expired
Aug 20, 2019, 5:15 PM CDT
In force
25 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Simpson County, KY, Warren County, KY

The radar

The Nashville radar (KOHX), 69 km from the middle of the area, began a volume at 21:50 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.

IssuedProductOfficeLasted
Aug 20, 1:53 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.8 hours before the alert went out and 83 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2019-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1377 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2019-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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, 3:55 PM CDT, 55 minutes earlier.

Area forecast discussion, Aug 20, 3:55 PM CDT, 55 minutes before
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Hazardous weather outlook, Aug 20, 2:22 PM CDT, 2 hours 28 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 CDT, 29 minutes before
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Special weather statement, Aug 20, 4:27 PM CDT, 23 minutes before
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Special weather statement, Aug 20, 4:29 PM CDT, 21 minutes before
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Special weather statement, Aug 20, 4:36 PM CDT, 14 minutes before
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Special weather statement, Aug 20, 4:45 PM CDT, 5 minutes before
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Local storm report, Aug 20, 4:50 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 8:36 PM CDTSpecial Weather StatementLMKFayette24 min
Aug 19, 9:28 PM CDTSpecial Weather StatementLMKJessamine47 min
Aug 20, 12:29 PM CDTSpecial Weather StatementLMKTrimble31 min
Aug 20, 12:33 PM CDTSpecial Weather StatementLMKLarue27 min
Aug 20, 12:46 PM CDTSpecial Weather StatementLMKCumberland29 min
Aug 20, 1:32 PM CDTSpecial Weather StatementLMKScott28 min
Aug 20, 1:44 PM CDTSevere Thunderstorm WarningLMKHarrison, Scott31 min
Aug 20, 1:46 PM CDTSpecial Weather StatementLMKCasey29 min
Aug 20, 1:54 PM CDTAreal Flood AdvisoryLMKAdair3 hr
Aug 20, 1:57 PM CDTSpecial Weather StatementLMKHarrison33 min
Aug 20, 2:11 PM CDTSpecial Weather StatementLMKMarion34 min
Aug 20, 2:13 PM CDTSpecial Weather StatementLMKCasey32 min
Aug 20, 2:19 PM CDTSpecial Weather StatementLMKButler26 min
Aug 20, 2:49 PM CDTSpecial Weather StatementLMKBoyle26 min
Aug 20, 2:52 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Hancock, Meade38 min
Aug 20, 3:00 PM CDTSpecial Weather StatementLMKClark30 min
Aug 20, 3:01 PM CDTSpecial Weather StatementLMKHancock14 min
Aug 20, 3:10 PM CDTSpecial Weather StatementLMKAnderson35 min
Aug 20, 3:12 PM CDTSpecial Weather StatementLMKOhio33 min
Aug 20, 3:18 PM CDTSpecial Weather StatementLMKBreckinridge, Meade42 min
Aug 20, 3:21 PM CDTSpecial Weather StatementLMKJefferson, Oldham, Trimble39 min
Aug 20, 3:24 PM CDTSpecial Weather StatementLMKBourbon36 min
Aug 20, 3:33 PM CDTSevere Thunderstorm WarningLMKAnderson, Franklin, Shelby, Spencer27 min
Aug 20, 3:39 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Grayson, Hardin, Meade36 min
Aug 20, 3:41 PM CDTSpecial Weather StatementLMKNelson34 min
Aug 20, 3:44 PM CDTSevere Thunderstorm WarningLMKButler, Grayson, Ohio31 min
Aug 20, 3:50 PM CDTAreal Flood AdvisoryLMKAnderson, Shelby3 hr
Aug 20, 3:55 PM CDTSpecial Weather StatementLMKAnderson, Bullitt, Franklin, Henry, Jefferson, Oldham and 4 more35 min
Aug 20, 4:01 PM CDTSpecial Weather StatementLMKNelson29 min
Aug 20, 4:05 PM CDTSevere Thunderstorm WarningLMKBullitt, Grayson, Hardin, Nelson25 min
Aug 20, 4:15 PM CDTSevere Thunderstorm WarningLMKButler, Edmonson, Logan, Ohio, Warren45 min
Aug 20, 4:17 PM CDTSpecial Weather StatementLMKEdmonson, Grayson, Hart28 min
Aug 20, 4:21 PM CDTSpecial Weather StatementLMKLarue, Nelson, Washington39 min
Aug 20, 4:27 PM CDTSpecial Weather StatementLMKAnderson, Franklin, Harrison, Scott, Spencer, Woodford33 min
Aug 20, 4:29 PM CDTSpecial Weather StatementLMKHardin31 min
Aug 20, 4:36 PM CDTSpecial Weather StatementLMKBarren, Green, Hart, Simpson, Warren24 min
Aug 20, 4:45 PM CDTSpecial Weather StatementLMKLogan30 min
Aug 20, 4:58 PM CDTSpecial Weather StatementLMKAnderson, Bourbon, Boyle, Fayette, Franklin, Harrison and 7 more47 min
Aug 20, 4:58 PM CDTSevere Thunderstorm WarningLMKGreen, Hart32 min
Aug 20, 5:06 PM CDTSevere Thunderstorm WarningLMKGreen, Larue, Marion, Nelson, Taylor24 min
Aug 20, 5:09 PM CDTSevere Thunderstorm WarningLMKAllen, Simpson, Warren12 min
Aug 20, 5:17 PM CDTSpecial Weather StatementLMKMetcalfe28 min
Aug 20, 5:30 PM CDTSevere Thunderstorm WarningLMKBarren, Metcalfe30 min
Aug 20, 5:43 PM CDTSpecial Weather StatementLMKCasey32 min
Aug 20, 6:17 PM CDTSpecial Weather StatementLMKMonroe28 min
Aug 20, 12:59 PM CDTSpecial Weather StatementLMKJefferson31 min
Aug 20, 1:42 PM CDTSpecial Weather StatementLMKDubois, Orange63 min
Aug 20, 2:20 PM CDTSevere Thunderstorm WarningLMKOrange25 min
Aug 20, 2:22 PM CDTSevere Thunderstorm WarningLMKDubois38 min
Aug 20, 2:30 PM CDTSevere Thunderstorm WarningLMKCrawford, Dubois, Orange, Perry45 min
Aug 20, 2:45 PM CDTSpecial Weather StatementLMKOrange30 min
Aug 20, 2:56 PM CDTSpecial Weather StatementLMKJefferson49 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2019Every 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.