Alert archive / Kentucky / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 566
The Storm Prediction Center issued this severe thunderstorm watch at Jun 27, 2011, 12:01 PM CDT for 4 counties in Indiana; 60 counties in Kentucky; 26 counties in Tennessee. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2011, 12:01 PM CDT (17:01 UTC)
- Expired
- Jun 27, 2011, 4:25 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 90 counties
Perry County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren 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, Fulton County, KY, Garrard County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hickman County, KY, Hopkins 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, Ohio County, KY, Russell 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, Benton County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, White 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- 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
- 80%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 12:15 PM CDT | Tornado Warning | PAH | Livingston | 17 min |
| Jun 27, 12:21 PM CDT | Severe Thunderstorm Warning | PAH | Caldwell, Crittenden, Graves, Livingston, Lyon, Marshall and 1 more | 24 min |
| Jun 27, 12:43 PM CDT | Severe Thunderstorm Warning | PAH | Caldwell, Christian, Hopkins, Lyon, Trigg | 32 min |
| Jun 27, 12:54 PM CDT | Severe Thunderstorm Warning | PAH | Spencer | 36 min |
| Jun 27, 1:02 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 28 min |
| Jun 27, 1:10 PM CDT | Severe Thunderstorm Warning | PAH | Christian, Hopkins, Muhlenberg, Todd | 35 min |
| Jun 27, 3:28 PM CDT | Severe Thunderstorm Warning | LMK | Barren, Metcalfe | 32 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, 5.0 hours before the alert went out and 139 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.
- Mixed-layer CAPE
- 708 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 12:58 AM CDT | Mesoscale Discussion | SPC | Clay, Parke, Sullivan, Vermillion, Vigo | 92 min |
| Jun 27, 3:14 AM CDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clark, Clay, Clinton and 46 more | 91 min |
| Jun 27, 11:30 AM CDT | Mesoscale Discussion | SPC | Perry, Spencer, Vanderburgh, Warrick | 90 min |
| Jun 27, 2:20 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 35 more | 55 min |
| Jun 27, 3:17 PM CDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Estill, Floyd, Harlan and 21 more | 88 min |
Nearby
Severe Thunderstorm Watches in Kentucky, 2011Severe Thunderstorm Watches in Tennessee, 2011Severe Thunderstorm Watches in Indiana, 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.