Alert archive / Kentucky / Severe Thunderstorm Watches in 2011

Severe Thunderstorm Watch 324

May 22, 20117 states

The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2011, 1:18 PM CDT for 7 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 22, 2011, 1:18 PM CDT (18:18 UTC)
Expired
May 22, 2011, 8:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 201 counties

Colbert County, AL, Cullman County, AL, DeKalb County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Winston County, AL, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyle County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harlan County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, McCreary County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan 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, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Cherokee County, NC, Clay County, NC, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Carter County, TN, Cheatham County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grainger County, TN, Greene County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Hickman County, TN, Jackson County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Smith County, TN, Sullivan County, TN, Sumner County, TN, Trousdale County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Washington County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The radar

The Nashville radar (KOHX), 87 km from the middle of the area, began a volume at 18:17 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 22, 1:21 PM CDTSevere Thunderstorm WarningHUNFranklin24 min
May 22, 1:31 PM CDTSevere Thunderstorm WarningHUNMadison29 min
May 22, 1:33 PM CDTSevere Thunderstorm WarningLMKButler, Edmonson, Grayson27 min
May 22, 1:39 PM CDTSevere Thunderstorm WarningLMKBarren, Green, Hart, Metcalfe51 min
May 22, 1:55 PM CDTSevere Thunderstorm WarningLMKGrayson, Hardin17 min
May 22, 1:56 PM CDTSevere Thunderstorm WarningLMKAdair, Barren, Green, Metcalfe34 min
May 22, 1:58 PM CDTSevere Thunderstorm WarningOHXDeKalb, Putnam, Warren, White32 min
May 22, 2:00 PM CDTSevere Thunderstorm WarningLMKPerry30 min
May 22, 2:00 PM CDTSevere Thunderstorm WarningJKLElliott30 min
May 22, 2:15 PM CDTSevere Thunderstorm WarningJKLClay, Jackson, Laurel, Lee, Owsley, Rockcastle45 min
May 22, 2:22 PM CDTSevere Thunderstorm WarningJKLBell, Knox, McCreary, Whitley38 min
May 22, 2:25 PM CDTSevere Thunderstorm WarningLMKAdair, Cumberland, Russell35 min
May 22, 2:29 PM CDTSevere Thunderstorm WarningLMKCrawford, Harrison, Perry31 min
May 22, 2:40 PM CDTSevere Thunderstorm WarningJKLClay, Knox, Laurel, Leslie, Owsley35 min
May 22, 2:50 PM CDTSevere Thunderstorm WarningMRXMeigs, Rhea, Roane55 min
May 22, 2:54 PM CDTSevere Thunderstorm WarningLMKCasey36 min
May 22, 2:57 PM CDTSevere Thunderstorm WarningJKLBreathitt, Clay, Jackson, Lee, Leslie, Owsley and 2 more33 min
May 22, 3:01 PM CDTSevere Thunderstorm WarningLMKCrawford, Orange, Washington29 min
May 22, 3:06 PM CDTSevere Thunderstorm WarningMRXAnderson, Morgan, Scott24 min
May 22, 3:14 PM CDTSevere Thunderstorm WarningMRXMeigs, Rhea31 min
May 22, 3:15 PM CDTSevere Thunderstorm WarningJKLBreathitt, Clay, Knott, Knox, Laurel, Leslie and 3 more45 min
May 22, 3:16 PM CDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Wayne29 min
May 22, 3:23 PM CDTSevere Thunderstorm WarningLMKLincoln22 min
May 22, 3:28 PM CDTSevere Thunderstorm WarningMRXAnderson, Campbell, Morgan, Scott62 min
May 22, 3:45 PM CDTSevere Thunderstorm WarningMRXBradley, Loudon, McMinn, Meigs, Monroe, Roane60 min
May 22, 3:47 PM CDTSevere Thunderstorm WarningLMKGarrard, Madison35 min
May 22, 3:51 PM CDTSevere Thunderstorm WarningJKLBreathitt, Clay, Knott, Magoffin, Owsley, Perry and 1 more32 min
May 22, 3:53 PM CDTSevere Thunderstorm WarningMRXBlount, Monroe67 min
May 22, 3:55 PM CDTSevere Thunderstorm WarningJKLClay, Jackson, Knox, Laurel, Owsley, Pulaski and 2 more50 min
May 22, 3:59 PM CDTSevere Thunderstorm WarningJKLBreathitt, Floyd, Johnson, Magoffin, Martin46 min
May 22, 4:07 PM CDTSevere Thunderstorm WarningMRXAnderson, Knox, Union53 min
May 22, 4:23 PM CDTSevere Thunderstorm WarningMRXGreene52 min
May 22, 4:36 PM CDTSevere Thunderstorm WarningMRXSevier54 min
May 22, 4:47 PM CDTSevere Thunderstorm WarningMRXGrainger, Hamblen, Jefferson58 min
May 22, 5:00 PM CDTSevere Thunderstorm WarningMRXBlount25 min
May 22, 5:02 PM CDTSevere Thunderstorm WarningMRXCocke58 min
May 22, 5:44 PM CDTSevere Thunderstorm WarningMRXGreene, Hawkins61 min
May 22, 5:48 PM CDTSevere Thunderstorm WarningMRXScott, Wise, City of Norton57 min
May 22, 6:00 PM CDTSevere Thunderstorm WarningMRXScott45 min
May 22, 6:07 PM CDTSevere Thunderstorm WarningMRXHawkins, Sullivan, Washington53 min
May 22, 6:22 PM CDTSevere Thunderstorm WarningMRXRussell, Washington, City of Bristol53 min
May 22, 7:15 PM CDTSevere Thunderstorm WarningMRXWashington13 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, 6.3 hours before the alert went out and 85 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 2011-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1543 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 2011-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.19395878Sfc1 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
1543 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1025 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 12:55 PM CDTMesoscale DiscussionSPCCullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more65 min
May 22, 1:51 PM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 37 more54 min
May 22, 2:04 PM CDTTornado WatchSPCBenton, Jasper, Lake, Newton, Porter9 hr
May 22, 2:15 PM CDTMesoscale DiscussionSPCSteuben60 min
May 22, 4:16 PM CDTMesoscale DiscussionSPCAllen, Benton, Boone, Carroll, Cass, Clinton and 30 more119 min
May 22, 4:32 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 27 more7 hr
May 22, 3:44 PM CDTMesoscale DiscussionSPCBath, Bell, Bourbon, Boyd, Bracken, Breathitt and 44 more61 min
May 22, 4:40 PM CDTSevere Thunderstorm WatchSPCBoyd, Carter, Greenup, Lawrence5 hr
May 22, 6:26 PM CDTMesoscale DiscussionSPCBoyd, Carter, Elliott, Floyd, Greenup, Johnson and 4 more2 hr
May 22, 5:18 AM CDTMesoscale DiscussionSPCCrockett, Dyer, Fayette, Hardeman, Haywood, Lake and 3 more57 min
May 22, 7:03 AM CDTSevere Thunderstorm WatchSPCChester, Crockett, Decatur, Fayette, Hardeman, Hardin and 7 more7 hr
May 22, 1:09 PM CDTMesoscale DiscussionSPCChester, Fayette, Hardeman, Hardin, Haywood, McNairy and 3 more66 min

Nearby

Severe Thunderstorm Watches in Kentucky, 2011Severe Thunderstorm Watches in Tennessee, 2011Severe Thunderstorm Watches in Georgia, 2011Every severe thunderstorm watch in 2011

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.