Alert archive / Kentucky / Severe Thunderstorm Watches in 2018

Severe Thunderstorm Watch 221

June 26, 20188 counties in Illinois; 15 counties in Indiana; 64 counties in Kentucky

The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2018, 9:26 AM CDT for 8 counties in Illinois; 15 counties in Indiana; 64 counties in Kentucky. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 26, 2018, 9:26 AM CDT (14:26 UTC)
Expired: Jun 26, 2018, 2:53 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 87 counties

Edwards County, IL, Gallatin County, IL, Hardin County, IL, Massac County, IL, Pope County, IL, Saline County, IL, Wabash County, IL, White County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Scott County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Ballard County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Madison County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 34 km from the middle of the area, began a volume at 14:28 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 10%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 20%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

56 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 26, 9:30 AM CDT	Severe Thunderstorm Warning	LMK	Taylor	30 min
Jun 26, 9:33 AM CDT	Severe Thunderstorm Warning	PAH	Gallatin, Hardin, Pope, Saline	42 min
Jun 26, 9:35 AM CDT	Severe Thunderstorm Warning	PAH	White	40 min
Jun 26, 9:41 AM CDT	Tornado Warning	PAH	White	34 min
Jun 26, 9:50 AM CDT	Severe Thunderstorm Warning	PAH	Edwards, Wabash, Wayne	40 min
Jun 26, 9:51 AM CDT	Severe Thunderstorm Warning	LMK	Casey, Marion, Taylor	24 min
Jun 26, 10:01 AM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Crittenden	29 min
Jun 26, 10:06 AM CDT	Severe Thunderstorm Warning	LMK	Anderson, Mercer, Woodford	24 min
Jun 26, 10:15 AM CDT	Severe Thunderstorm Warning	PAH	Gibson, Posey, Vanderburgh	45 min
Jun 26, 10:28 AM CDT	Severe Thunderstorm Warning	LMK	Orange, Washington	32 min
Jun 26, 10:28 AM CDT	Severe Thunderstorm Warning	PAH	Hopkins, Webster	47 min
Jun 26, 10:30 AM CDT	Flash Flood Warning	PAH	Wabash	2 hr
Jun 26, 10:39 AM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike	36 min
Jun 26, 10:46 AM CDT	Severe Thunderstorm Warning	LMK	Fayette, Franklin, Scott, Woodford	29 min
Jun 26, 10:47 AM CDT	Severe Thunderstorm Warning	LMK	Dubois	28 min
Jun 26, 10:48 AM CDT	Severe Thunderstorm Warning	PAH	Daviess, Henderson, McLean, Muhlenberg	42 min
Jun 26, 10:52 AM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Marion, Mercer, Nelson, Washington	38 min
Jun 26, 10:53 AM CDT	Severe Thunderstorm Warning	PAH	Spencer, Vanderburgh, Warrick	37 min
Jun 26, 11:05 AM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Fayette, Harrison, Scott	40 min
Jun 26, 11:07 AM CDT	Severe Thunderstorm Warning	LMK	Hancock, Ohio	23 min
Jun 26, 11:12 AM CDT	Severe Thunderstorm Warning	LMK	Crawford, Dubois, Orange, Perry	33 min
Jun 26, 11:15 AM CDT	Flash Flood Warning	PAH	Pike, Spencer, Warrick	2 hr
Jun 26, 11:25 AM CDT	Severe Thunderstorm Warning	LMK	Crawford, Perry	20 min
Jun 26, 11:29 AM CDT	Severe Thunderstorm Warning	LMK	Perry	31 min
Jun 26, 11:34 AM CDT	Severe Thunderstorm Warning	LMK	Clark, Scott, Washington	26 min
Jun 26, 11:40 AM CDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison, Orange, Washington	35 min
Jun 26, 11:46 AM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson, Hardin, Hart, Larue, Meade	29 min
Jun 26, 11:58 AM CDT	Severe Thunderstorm Warning	LMK	Clark, Jefferson, Scott	47 min
Jun 26, 12:04 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Floyd, Harrison, Washington	41 min
Jun 26, 12:07 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Taylor	23 min
Jun 26, 12:08 PM CDT	Severe Thunderstorm Warning	LMK	Hardin, Larue, Nelson	37 min
Jun 26, 12:14 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Bullitt, Hardin, Meade	35 min
Jun 26, 12:17 PM CDT	Severe Thunderstorm Warning	LMK	Barren, Edmonson, Grayson, Hart, Warren	43 min
Jun 26, 12:23 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Jefferson	37 min
Jun 26, 12:30 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Green, Hart, Metcalfe, Taylor	30 min
Jun 26, 12:32 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Larue, Marion, Nelson, Washington	43 min
Jun 26, 12:34 PM CDT	Severe Thunderstorm Warning	LMK	Clark	41 min
Jun 26, 12:46 PM CDT	Tornado Warning	LMK	Jefferson, Oldham, Shelby	14 min
Jun 26, 12:48 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Simpson, Warren	27 min
Jun 26, 12:52 PM CDT	Flash Flood Warning	LMK	Scott	3 hr
Jun 26, 12:55 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Barren, Cumberland, Green, Metcalfe	35 min
Jun 26, 12:58 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Henry, Shelby, Spencer, Trimble	32 min
Jun 26, 1:00 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Barren, Casey, Green, Hart, Metcalfe and 1 more	30 min
Jun 26, 1:13 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	32 min
Jun 26, 1:13 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Garrard, Jessamine, Mercer, Washington, Woodford	32 min
Jun 26, 1:20 PM CDT	Tornado Warning	LMK	Adair, Cumberland, Metcalfe	17 min
Jun 26, 1:26 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Barren, Cumberland, Green, Metcalfe	34 min
Jun 26, 1:28 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Harrison, Scott, Woodford	32 min
Jun 26, 1:31 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Russell	29 min
Jun 26, 1:38 PM CDT	Severe Thunderstorm Warning	LMK	Adair, Cumberland, Metcalfe	14 min
Jun 26, 1:40 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Clinton, Cumberland, Monroe, Russell	35 min
Jun 26, 1:41 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Fayette, Jessamine, Madison, Woodford	34 min
Jun 26, 1:49 PM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Jessamine, Lincoln, Madison	26 min
Jun 26, 1:51 PM CDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland, Russell	24 min
Jun 26, 2:01 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Nicholas, Scott	29 min
Jun 26, 2:14 PM CDT	Severe Thunderstorm Warning	LMK	Clinton, Cumberland, Monroe, Russell	31 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 2.4 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: 2005 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 737 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 8:08 PM CDT	Mesoscale Discussion	SPC	Alexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 19 more	2 hr
Jun 26, 2:19 AM CDT	Mesoscale Discussion	SPC	Monroe	116 min
Jun 26, 7:39 AM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Christian, Clark, Clay, Clinton and 39 more	2 hr
Jun 26, 1:31 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, Jo Daviess, Kane and 5 more	89 min
Jun 26, 1:53 PM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Jackson, Johnson, Perry, Pulaski and 3 more	67 min
Jun 26, 2:22 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 10 more	6 hr
Jun 26, 11:08 AM CDT	Mesoscale Discussion	SPC	Perry, Spencer	67 min
Jun 26, 12:18 PM CDT	Mesoscale Discussion	SPC	Dearborn	87 min
Jun 26, 1:43 PM CDT	Mesoscale Discussion	SPC	McCreary, Wayne	62 min
Jun 26, 5:26 PM CDT	Severe Thunderstorm Watch	SPC	Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more	6 hr

Nearby

Severe Thunderstorm Watches in Kentucky, 2018 Severe Thunderstorm Watches in Indiana, 2018 Severe Thunderstorm Watches in Illinois, 2018 Every severe thunderstorm watch in 2018

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.