Alert archive / Kentucky / Tornado Watches in 2009

Tornado Watch 131

April 10, 200970 counties in Kentucky; 52 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Apr 10, 2009, 8:53 AM CDT for 70 counties in Kentucky; 52 counties in Tennessee. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2009, 8:53 AM CDT (13:53 UTC)
Expired: Apr 10, 2009, 3:40 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 70 kt

All 122 counties

Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle 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, Fulton County, KY, Garrard County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hickman 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, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Shelby County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN

What SPC expected

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

Two or more tornadoes: 60%
One or more EF2 to EF5 tornadoes: 40%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 40%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:38 AM CDT	Severe Thunderstorm Warning	MEG	Carroll	52 min
Apr 10, 9:47 AM CDT	Severe Thunderstorm Warning	MEG	Obion, Weakley	28 min
Apr 10, 9:49 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman, Shelby	41 min
Apr 10, 9:51 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Henry	39 min
Apr 10, 9:56 AM CDT	Severe Thunderstorm Warning	PAH	Fulton, Graves, Hickman	49 min
Apr 10, 9:56 AM CDT	Tornado Warning	MEG	Carroll, Henry	49 min
Apr 10, 10:02 AM CDT	Tornado Warning	MEG	Obion	13 min
Apr 10, 10:07 AM CDT	Tornado Warning	PAH	Fulton, Graves, Hickman	23 min
Apr 10, 10:20 AM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	25 min
Apr 10, 10:20 AM CDT	Severe Thunderstorm Warning	PAH	Christian, Trigg	25 min
Apr 10, 10:20 AM CDT	Tornado Warning	OHX	Benton, Houston, Stewart	55 min
Apr 10, 10:22 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Decatur, Henderson, Madison	38 min
Apr 10, 10:27 AM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	48 min
Apr 10, 10:28 AM CDT	Tornado Warning	PAH	Graves	32 min
Apr 10, 10:32 AM CDT	Severe Thunderstorm Warning	PAH	McCracken	25 min
Apr 10, 10:34 AM CDT	Severe Thunderstorm Warning	MEG	Henry	13 min
Apr 10, 10:36 AM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardeman, Hardin, Henderson, McNairy	54 min
Apr 10, 10:40 AM CDT	Flash Flood Warning	MEG	Decatur	3 hr
Apr 10, 10:42 AM CDT	Severe Thunderstorm Warning	LMK	Jefferson	33 min
Apr 10, 10:45 AM CDT	Tornado Warning	OHX	Benton, Houston, Humphreys, Stewart	30 min
Apr 10, 10:46 AM CDT	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Taylor	29 min
Apr 10, 10:51 AM CDT	Severe Thunderstorm Warning	PAH	Calloway, Graves, Marshall	24 min
Apr 10, 11:01 AM CDT	Severe Thunderstorm Warning	MEG	Decatur	29 min
Apr 10, 11:02 AM CDT	Tornado Warning	OHX	Houston, Montgomery, Stewart	43 min
Apr 10, 11:06 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys, Perry	24 min
Apr 10, 11:07 AM CDT	Severe Thunderstorm Warning	PAH	Livingston, Lyon, McCracken, Marshall	23 min
Apr 10, 11:07 AM CDT	Tornado Warning	MEG	McNairy	53 min
Apr 10, 11:12 AM CDT	Tornado Warning	MEG	Decatur, Hardin	33 min
Apr 10, 11:13 AM CDT	Severe Thunderstorm Warning	PAH	Calloway, Marshall	32 min
Apr 10, 11:19 AM CDT	Tornado Warning	MEG	Hardin, McNairy	41 min
Apr 10, 11:22 AM CDT	Tornado Warning	OHX	Perry, Wayne	38 min
Apr 10, 11:26 AM CDT	Severe Thunderstorm Warning	LMK	Marion, Taylor	34 min
Apr 10, 11:27 AM CDT	Tornado Warning	OHX	Dickson, Montgomery	33 min
Apr 10, 11:30 AM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Hopkins, Trigg	30 min
Apr 10, 11:30 AM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys	30 min
Apr 10, 11:34 AM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Crittenden, Livingston, Lyon	41 min
Apr 10, 11:36 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery	39 min
Apr 10, 11:37 AM CDT	Severe Thunderstorm Warning	OHX	Maury, Williamson	38 min
Apr 10, 11:40 AM CDT	Severe Thunderstorm Warning	MEG	Hardin, McNairy	50 min
Apr 10, 11:44 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Perry	46 min
Apr 10, 11:45 AM CDT	Tornado Warning	PAH	Christian, Hopkins	30 min
Apr 10, 11:47 AM CDT	Tornado Warning	MEG	Hardin, McNairy	43 min
Apr 10, 11:51 AM CDT	Tornado Warning	OHX	Lewis, Perry	24 min
Apr 10, 11:55 AM CDT	Tornado Warning	PAH	Christian, Hopkins, McLean, Muhlenberg	50 min
Apr 10, 11:57 AM CDT	Tornado Warning	OHX	Cheatham, Davidson, Montgomery, Robertson	33 min
Apr 10, 12:00 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Williamson	45 min
Apr 10, 12:06 PM CDT	Severe Thunderstorm Warning	PAH	Livingston	39 min
Apr 10, 12:06 PM CDT	Tornado Warning	OHX	Wayne	24 min
Apr 10, 12:07 PM CDT	Tornado Warning	OHX	Davidson, Rutherford, Williamson	38 min
Apr 10, 12:14 PM CDT	Tornado Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	31 min
Apr 10, 12:16 PM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Mercer	29 min
Apr 10, 12:18 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury, Williamson	42 min
Apr 10, 12:19 PM CDT	Tornado Warning	OHX	Lawrence, Wayne	26 min
Apr 10, 12:20 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Trigg	40 min
Apr 10, 12:23 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Marshall, Maury	37 min
Apr 10, 12:23 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Williamson	52 min
Apr 10, 12:25 PM CDT	Tornado Warning	OHX	Lawrence, Wayne	50 min
Apr 10, 12:29 PM CDT	Tornado Warning	OHX	Robertson, Sumner	46 min
Apr 10, 12:31 PM CDT	Tornado Warning	OHX	Giles, Marshall, Maury	29 min
Apr 10, 12:33 PM CDT	Tornado Warning Emergency	OHX	Cannon, Rutherford, Wilson	42 min
Apr 10, 12:34 PM CDT	Severe Thunderstorm Warning	LMK	Ohio	26 min
Apr 10, 12:37 PM CDT	Severe Thunderstorm Warning	OHX	Maury	23 min
Apr 10, 12:42 PM CDT	Tornado Warning	PAH	Christian, Hopkins	33 min
Apr 10, 12:43 PM CDT	Tornado Warning	OHX	Maury, Williamson	32 min
Apr 10, 12:46 PM CDT	Tornado Warning	OHX	Giles, Marshall	29 min
Apr 10, 12:48 PM CDT	Flash Flood Warning	LMK	Boyle, Garrard, Mercer	117 min
Apr 10, 12:49 PM CDT	Tornado Warning	OHX	Giles, Lawrence, Maury	26 min
Apr 10, 12:50 PM CDT	Tornado Warning	OHX	Davidson, Williamson, Wilson	25 min
Apr 10, 12:52 PM CDT	Severe Thunderstorm Warning	LMK	Boyle, Garrard, Jessamine, Mercer	23 min
Apr 10, 12:52 PM CDT	Tornado Warning	OHX	Macon, Sumner	23 min
Apr 10, 12:55 PM CDT	Tornado Warning	PAH	Christian, Hopkins, Muhlenberg, Todd	50 min
Apr 10, 12:56 PM CDT	Tornado Warning	OHX	Marshall, Maury	34 min
Apr 10, 12:57 PM CDT	Tornado Warning	OHX	Cannon, DeKalb, Rutherford, Smith, Trousdale, Wilson	48 min
Apr 10, 12:58 PM CDT	Tornado Warning	OHX	Giles, Lawrence	32 min
Apr 10, 1:00 PM CDT	Tornado Warning	OHX	Bedford, Marshall	30 min
Apr 10, 1:03 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	27 min
Apr 10, 1:12 PM CDT	Tornado Warning	OHX	Bedford, Giles, Marshall	33 min
Apr 10, 1:18 PM CDT	Severe Thunderstorm Warning	LMK	Fayette, Garrard, Jessamine, Madison, Mercer	27 min
Apr 10, 1:20 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	25 min
Apr 10, 1:22 PM CDT	Tornado Warning	OHX	Clay, Macon	23 min
Apr 10, 1:22 PM CDT	Tornado Warning	OHX	Bedford, Coffee, Rutherford	38 min
Apr 10, 1:32 PM CDT	Tornado Warning	OHX	Giles	43 min
Apr 10, 1:35 PM CDT	Tornado Warning	LMK	Butler, Ohio	25 min
Apr 10, 1:36 PM CDT	Tornado Warning	OHX	DeKalb, Putnam, Smith, White	39 min
Apr 10, 1:42 PM CDT	Tornado Warning	OHX	Bedford, Cannon, Coffee, Warren	48 min
Apr 10, 1:48 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	27 min
Apr 10, 1:51 PM CDT	Tornado Warning	OHX	DeKalb, Jackson, Overton, Putnam	39 min
Apr 10, 1:57 PM CDT	Tornado Warning	OHX	Bedford, Coffee, Grundy	48 min
Apr 10, 1:59 PM CDT	Tornado Warning	LMK	Butler, Ohio	21 min
Apr 10, 2:09 PM CDT	Severe Thunderstorm Warning	LMK	Clark, Madison	36 min
Apr 10, 2:09 PM CDT	Tornado Warning	OHX	Fentress, Overton, Putnam, White	51 min
Apr 10, 2:15 PM CDT	Tornado Warning	LMK	Clark, Madison	30 min
Apr 10, 2:15 PM CDT	Tornado Warning	OHX	Cumberland, DeKalb, Putnam, Van Buren, Warren, White	30 min
Apr 10, 2:23 PM CDT	Severe Thunderstorm Warning	LMK	Garrard, Jessamine	22 min
Apr 10, 2:25 PM CDT	Tornado Warning	LMK	Garrard, Lincoln, Madison	25 min
Apr 10, 2:25 PM CDT	Tornado Warning	OHX	Coffee, Grundy	35 min
Apr 10, 2:32 PM CDT	Tornado Warning	OHX	Cumberland, Fentress, Overton, Putnam	43 min
Apr 10, 2:47 PM CDT	Severe Thunderstorm Warning	LMK	Grayson, Hardin	28 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, 1.9 hours before the alert went out and 113 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: 1414 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -4 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
Apr 9, 10:52 PM CDT	Severe Thunderstorm Watch	SPC	Ballard, Calloway, Carlisle, Crittenden, Fulton, Graves and 5 more	4 hr
Apr 10, 12:50 AM CDT	Mesoscale Discussion	SPC	Ballard, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 26 more	85 min
Apr 10, 1:22 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Barren, Breckinridge, Bullitt, Butler, Caldwell and 23 more	4 hr
Apr 10, 3:33 AM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Breckinridge, Bullitt, Butler and 28 more	57 min
Apr 10, 8:22 AM CDT	Mesoscale Discussion	SPC	Calloway, Marshall, Todd, Trigg	83 min
Apr 10, 10:30 AM CDT	Mesoscale Discussion	SPC	Anderson, Bourbon, Boyle, Breckinridge, Bullitt, Clark and 14 more	60 min
Apr 10, 11:14 AM CDT	Mesoscale Discussion	SPC	Allen, Calloway, Christian, Logan, Lyon, Marshall and 4 more	76 min
Apr 10, 1:26 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 87 more	64 min
Apr 10, 1:51 PM CDT	Tornado Watch	SPC	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	6 hr
Apr 10, 2:56 PM CDT	Mesoscale Discussion	SPC	Breathitt, Clark, Elliott, Estill, Floyd, Jackson and 12 more	64 min
Apr 10, 3:06 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Breckinridge, Bullitt, Edmonson and 15 more	54 min
Apr 10, 3:42 PM CDT	Mesoscale Discussion	SPC	Breathitt, Clay, Elliott, Floyd, Harlan, Johnson and 14 more	63 min
Apr 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Harlan, Letcher	67 min
Apr 9, 10:48 PM CDT	Tornado Watch	SPC	Crockett, Dyer, Fayette, Gibson, Haywood, Lake and 4 more	4 hr
Apr 10, 1:24 AM CDT	Mesoscale Discussion	SPC	Hardeman, Hardin, McNairy	96 min
Apr 10, 11:23 AM CDT	Tornado Watch PDS	SPC	Anderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 43 more	8 hr
Apr 10, 12:58 PM CDT	Mesoscale Discussion	SPC	Bedford, Cannon, Coffee, DeKalb, Franklin, Giles and 17 more	92 min
Apr 10, 3:43 PM CDT	Mesoscale Discussion	SPC	Polk	92 min

Nearby

Tornado Watches in Kentucky, 2009 Tornado Watches in Tennessee, 2009 Every tornado watch in 2009

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.