Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 146, NWS Louisville, KY

July 17, 20205 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 17, 2020, 12:35 PM EDT for 5 counties in Kentucky. It was in force for 40 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 17, 2020, 12:35 PM EDT (16:35 UTC)
Expired: Jul 17, 2020, 1:15 PM EDT
In force: 40 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Anderson County, KY, Mercer County, KY, Nelson County, KY, Spencer County, KY, Washington County, KY

The radar

The Louisville radar (KLVX), 69 km from the middle of the area, began a volume at 16:38 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, 4.6 hours before the alert went out and 209 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 985 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 16 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 Jul 17, 12:15 PM EDT, 20 minutes earlier.

Area forecast discussion, Jul 17, 12:15 PM EDT, 20 minutes before

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Hazardous weather outlook, Jul 17, 10:21 AM EDT, 2 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
1021 AM EDT Fri Jul 17 2020

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-181430-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-
Oldham-Trimble-Henry-Shelby-Franklin-Spencer-Anderson-Woodford-
Fayette-Bourbon-Nicholas-Nelson-Mercer-Jessamine-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 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, Frankfort, Georgetown, Cynthiana,
Taylorsville, 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
1021 AM EDT Fri Jul 17 2020 /921 AM CDT Fri Jul 17 2020/

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

.DAY ONE...Today and Tonight.

Scattered thunderstorms are expected today. In addition to lightning,
locally heavy downpours will be the main threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Afternoon heat index values around 100 degrees are expected this
weekend.

Isolated to scattered thunderstorms will be possible each afternoon
and evening. The main threats with these storms will be locally
heavy rainfall, gusty winds, and lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected.

MJ/13/KDW

In the hours before

Special weather statement, Jul 17, 11:48 AM EDT, 47 minutes before

Special Weather Statement
National Weather Service Louisville KY
1148 AM EDT Fri Jul 17 2020

KYZ029-030-034-038-045-171645-
Jefferson-Shelby-Bullitt-Spencer-Nelson-
1148 AM EDT Fri Jul 17 2020

...A STRONG THUNDERSTORM WILL AFFECT SPENCER...SOUTHWESTERN SHELBY...
NORTHERN NELSON...SOUTHEASTERN JEFFERSON AND BULLITT COUNTIES...

At 1148 AM EDT, a strong thunderstorm was located over Pioneer
Village, moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Shelbyville, Bardstown, Shepherdsville, Pioneer Village, Hollow
Creek, Taylorsville, Hollyvilla, Spring Mill, South Park View and
Minor Lane Heights.

Torrential rainfall is also occurring with this storm, and may cause
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 3804 8511 3799 8515 3799 8516 3800 8516
      3800 8517 3797 8517 3785 8527 3785 8528
      3783 8529 3783 8530 3779 8533 3778 8536
      3777 8536 3787 8578 3816 8573 3818 8512
TIME...MOT...LOC 1548Z 273DEG 23KT 3807 8564

MJ

Special weather statement, Jul 17, 11:49 AM EDT, 46 minutes before

Special Weather Statement
National Weather Service Louisville KY
1149 AM EDT Fri Jul 17 2020

KYZ067-171615-
Lincoln-
1149 AM EDT Fri Jul 17 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN LINCOLN COUNTY...

At 1149 AM EDT, a strong thunderstorm was located near Bee Lick,
moving east at 25 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Crab Orchard, Ottenheim, Turkeytown, Broughtentown and Dog Walk.

Torrential rainfall is also occurring with this storm, and may cause
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 3733 8450 3735 8456 3728 8467 3745 8465
      3746 8446
TIME...MOT...LOC 1549Z 273DEG 23KT 3736 8457

MJ

Special weather statement, Jul 17, 11:50 AM EDT, 45 minutes before

Special Weather Statement
National Weather Service Louisville KY
1150 AM EDT Fri Jul 17 2020

KYZ045-053-054-063>065-171615-
Hart-Marion-Taylor-Nelson-Larue-Green-
1150 AM EDT Fri Jul 17 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL NELSON...GREEN...
LARUE...SOUTHERN MARION...EASTERN HART AND TAYLOR COUNTIES...

At 1149 AM EDT/1049 AM CDT/, a strong thunderstorm was located 11
miles south of Hodgenville, moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Campbellsville, Lebanon, Hodgenville, Greensburg, Munfordville,
Monroe, Bradfordsville, Raywick, Boundary Oak and Lobb.

Torrential rainfall is also occurring with this storm, and may cause
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 3720 8594 3757 8583 3758 8582 3758 8505
      3719 8537
TIME...MOT...LOC 1549Z 269DEG 23KT 3742 8580

MJ

Special weather statement, Jul 17, 12:19 PM EDT, 16 minutes before

Special Weather Statement
National Weather Service Louisville KY
1219 PM EDT Fri Jul 17 2020

KYZ045-053-054-063>066-077-171645-
Hart-Marion-Taylor-Nelson-Casey-Larue-Adair-Green-
1219 PM EDT Fri Jul 17 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL NELSON...GREEN...
LARUE...MARION...EASTERN HART...TAYLOR...WEST CENTRAL CASEY AND
NORTHEASTERN ADAIR COUNTIES...

At 1219 PM EDT/1119 AM CDT/, a strong thunderstorm was located 10
miles south of Hodgenville, moving east at 30 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Campbellsville, Lebanon, Hodgenville, Greensburg, Monroe,
Bradfordsville, Raywick, Absher, Lobb and Romine.

Torrential rainfall is also occurring with this storm, and may cause
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 3719 8580 3762 8578 3762 8505 3715 8507
      3713 8508
TIME...MOT...LOC 1619Z 265DEG 24KT 3742 8571

MJ

Special weather statement, Jul 17, 12:32 PM EDT, 3 minutes before

Special Weather Statement
National Weather Service Louisville KY
1232 PM EDT Fri Jul 17 2020

KYZ034-035-038>040-045>047-171730-
Shelby-Mercer-Woodford-Franklin-Spencer-Washington-Nelson-Anderson-
1232 PM EDT Fri Jul 17 2020

...A STRONG THUNDERSTORM WILL AFFECT SPENCER...SOUTHERN SHELBY...
NORTHEASTERN NELSON...MERCER...WESTERN WOODFORD...ANDERSON...
WASHINGTON AND SOUTHWESTERN FRANKLIN COUNTIES...

At 1232 PM EDT, a strong thunderstorm was located near Taylorsville,
moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Lawrenceburg, Versailles, Harrodsburg, Taylorsville, Ballard,
Bloomfield, Willisburg, Mackville, Yoder and Wayside.

Torrential rainfall is also occurring with this storm, and may cause
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 3771 8480 3771 8539 3773 8540 3772 8542
      3817 8536 3814 8473 3796 8473
TIME...MOT...LOC 1632Z 269DEG 22KT 3796 8536

MJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 11:48 AM EDT	Special Weather Statement	LMK	Bullitt, Nelson, Spencer	57 min
Jul 17, 11:49 AM EDT	Special Weather Statement	LMK	Lincoln	26 min
Jul 17, 11:50 AM EDT	Special Weather Statement	LMK	Green, Hart, Larue, Marion, Taylor	25 min
Jul 17, 12:17 PM EDT	Areal Flood Advisory	LMK	Hart, Larue	3 hr
Jul 17, 12:19 PM EDT	Special Weather Statement	LMK	Green, Larue, Marion, Taylor	26 min
Jul 17, 12:32 PM EDT	Special Weather Statement	LMK	Anderson, Mercer, Spencer, Washington, Woodford	58 min
Jul 17, 1:03 PM EDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Washington, Woodford	42 min
Jul 17, 1:12 PM EDT	Special Weather Statement	LMK	Taylor	33 min
Jul 17, 1:41 PM EDT	Special Weather Statement	LMK	Taylor	34 min
Jul 17, 1:44 PM EDT	Special Weather Statement	LMK	Jessamine, Madison	61 min
Jul 17, 1:52 PM EDT	Flash Flood Warning	LMK	Hart, Larue	3 hr
Jul 17, 2:15 PM EDT	Special Weather Statement	LMK	Casey	45 min
Jul 17, 2:37 PM EDT	Areal Flood Advisory	LMK	Grayson	3 hr
Jul 17, 3:18 PM EDT	Areal Flood Advisory	LMK	Edmonson	3 hr
Jul 17, 3:38 PM EDT	Areal Flood Advisory	LMK	Hart	3 hr
Jul 17, 4:31 PM EDT	Areal Flood Advisory	LMK	Barren	3 hr
Jul 17, 5:06 PM EDT	Areal Flood Advisory	LMK	Hart, Larue	3 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 2020 Every severe thunderstorm warning in 2020

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.