Alert archive / Kentucky / Tornado Watches in 2007

Tornado Watch 725

October 18, 20078 counties in Indiana; 59 counties in Kentucky; 27 counties in Ohio

The Storm Prediction Center issued this tornado watch at Oct 18, 2007, 10:22 PM EDT for 8 counties in Indiana; 59 counties in Kentucky; 27 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Oct 18, 2007, 10:22 PM EDT (02:22 UTC)
Expired: Oct 19, 2007, 3:34 AM EDT
In force: 5 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 94 counties

Dearborn County, IN, Fayette County, IN, Franklin County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 99 km from the middle of the area, began a volume at 02:22 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: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Oct 18, 10:26 PM EDT	Tornado Warning	ILN	Switzerland	49 min
Oct 18, 10:29 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Hardin, Meade	31 min
Oct 18, 10:41 PM EDT	Tornado Warning	LMK	Breckinridge, Hardin, Meade	23 min
Oct 18, 10:48 PM EDT	Tornado Warning	LMK	Butler, Ohio	27 min
Oct 18, 10:51 PM EDT	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson, Ohio	39 min
Oct 18, 11:02 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson	28 min
Oct 18, 11:08 PM EDT	Severe Thunderstorm Warning	LMK	Logan	37 min
Oct 18, 11:12 PM EDT	Tornado Warning	ILN	Ohio, Switzerland	36 min
Oct 18, 11:15 PM EDT	Tornado Warning	LMK	Butler	30 min
Oct 18, 11:35 PM EDT	Severe Thunderstorm Warning	LMK	Logan, Simpson, Warren	40 min
Oct 18, 11:37 PM EDT	Severe Thunderstorm Warning	LMK	Grayson	38 min
Oct 18, 11:39 PM EDT	Severe Thunderstorm Warning	ILN	Campbell, Kenton	51 min
Oct 18, 11:43 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson, Shelby, Spencer	32 min
Oct 18, 11:58 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Clermont, Hamilton, Warren	47 min
Oct 19, 12:02 AM EDT	Severe Thunderstorm Warning	LMK	Butler, Edmonson, Warren	28 min
Oct 19, 12:07 AM EDT	Severe Thunderstorm Warning	LMK	Franklin, Henry, Scott, Shelby	23 min
Oct 19, 12:32 AM EDT	Severe Thunderstorm Warning	ILN	Owen	28 min
Oct 19, 12:51 AM EDT	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Taylor	24 min
Oct 19, 1:17 AM EDT	Severe Thunderstorm Warning	LMK	Marion, Taylor, Washington	28 min
Oct 19, 1:27 AM EDT	Severe Thunderstorm Warning	LMK	Barren, Metcalfe, Monroe	20 min
Oct 19, 1:47 AM EDT	Severe Thunderstorm Warning	LMK	Boyle, Marion, Mercer, Washington	28 min
Oct 19, 1:55 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Fayette, Scott	35 min
Oct 19, 2:07 AM EDT	Severe Thunderstorm Warning	ILN	Highland	23 min
Oct 19, 2:14 AM EDT	Severe Thunderstorm Warning	LMK	Clark, Fayette, Garrard, Jessamine, Lincoln, Madison and 1 more	31 min
Oct 19, 2:29 AM EDT	Severe Thunderstorm Warning	LMK	Bourbon, Clark, Nicholas	31 min
Oct 19, 2:47 AM EDT	Severe Thunderstorm Warning	LMK	Clark, Madison	13 min
Oct 19, 3:15 AM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Hocking, Pickaway	30 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.4 hours before the alert went out and 101 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: 807 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 958 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 5.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 18, 8:51 PM EDT	Mesoscale Discussion	SPC	Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 13 more	84 min
Oct 18, 10:57 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Blackford, Boone, Carroll, Cass and 33 more	93 min
Oct 18, 11:50 PM EDT	Mesoscale Discussion	SPC	Clark, Dearborn, Fayette, Floyd, Franklin, Harrison and 7 more	85 min
Oct 19, 1:52 AM EDT	Mesoscale Discussion	SPC	Bath, Bell, Boyd, Breathitt, Carter, Clay and 27 more	53 min
Oct 19, 2:26 AM EDT	Tornado Watch	SPC	Bath, Bell, Boyd, Breathitt, Carter, Clay and 31 more	3 hr

Nearby

Tornado Watches in Kentucky, 2007 Tornado Watches in Ohio, 2007 Tornado Watches in Indiana, 2007 Every tornado watch in 2007

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.