Alert archive / Kentucky / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 329
The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2012, 2:34 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 31, 2012, 2:34 PM CDT (19:34 UTC)
- Expired
- May 31, 2012, 8:53 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 69 counties
Massac County, IL, 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, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Anderson County, KY, Ballard County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Franklin County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham 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, Mississippi County, MO, New Madrid County, MO
The radar
The Louisville radar (KLVX), 82 km from the middle of the area, began a volume at 19:37 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
- 50%
- 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
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 2:35 PM CDT | Severe Thunderstorm Warning | PAH | New Madrid | 25 min |
| May 31, 2:58 PM CDT | Severe Thunderstorm Warning | PAH | New Madrid | 32 min |
| May 31, 3:25 PM CDT | Severe Thunderstorm Warning | PAH | Carlisle, Hickman | 35 min |
| May 31, 3:29 PM CDT | Severe Thunderstorm Warning | PAH | Caldwell, Crittenden, Hopkins, Webster | 31 min |
| May 31, 3:51 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 24 min |
| May 31, 3:54 PM CDT | Severe Thunderstorm Warning | PAH | Spencer | 36 min |
| May 31, 3:59 PM CDT | Severe Thunderstorm Warning | PAH | Hopkins, Webster | 31 min |
| May 31, 4:14 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 31 min |
| May 31, 4:14 PM CDT | Severe Thunderstorm Warning | PAH | Graves, Hickman | 46 min |
| May 31, 4:34 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison, Perry | 26 min |
| May 31, 4:58 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison | 47 min |
| May 31, 4:58 PM CDT | Severe Thunderstorm Warning | PAH | Calloway, Graves | 32 min |
| May 31, 5:28 PM CDT | Severe Thunderstorm Warning | LMK | Floyd, Harrison | 32 min |
| May 31, 5:56 PM CDT | Severe Thunderstorm Warning | LMK | Bullitt, Hardin, Jefferson, Nelson, Spencer | 34 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, 7.6 hours before the alert went out and 189 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1645 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 1:56 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Massac | 64 min |
| May 31, 5:30 PM CDT | Mesoscale Discussion | SPC | Floyd, Harrison | 2 hr |
| May 30, 7:32 PM CDT | Severe Thunderstorm Watch | SPC | Barry, Barton, Jasper, Lawrence, McDonald, Newton and 1 more | 8 hr |
| May 30, 11:21 PM CDT | Mesoscale Discussion | SPC | Barry, McDonald, Newton | 114 min |
| May 31, 1:52 AM CDT | Mesoscale Discussion | SPC | McDonald | 83 min |
| May 31, 11:59 AM CDT | Mesoscale Discussion | SPC | Dunklin, Pemiscot | 61 min |
| May 31, 12:59 PM CDT | Severe Thunderstorm Watch | SPC | Dunklin, Pemiscot | 6 hr |
Nearby
Severe Thunderstorm Watches in Kentucky, 2012Severe Thunderstorm Watches in Indiana, 2012Severe Thunderstorm Watches in Missouri, 2012Every severe thunderstorm watch in 2012
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.