Alert archive / Kentucky / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 529
The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2012, 6:26 PM EDT for 30 counties in Kentucky; 9 counties in West Virginia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2012, 6:26 PM EDT (22:26 UTC)
- Expired
- Jul 27, 2012, 1:15 AM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 39 counties
Bath County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Floyd County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wolfe County, KY, Boone County, WV, Fayette County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mingo County, WV, Raleigh County, WV, Wayne County, WV, Wyoming County, WV
The radar
The Jackson,KY radar (KJKL), 65 km from the middle of the area, began a volume at 22:27 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
- 70%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 6:30 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Fleming, Montgomery | 45 min |
| Jul 26, 6:50 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Greenup | 40 min |
| Jul 26, 7:01 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Fleming, Menifee, Montgomery, Rowan | 29 min |
| Jul 26, 7:18 PM EDT | Severe Thunderstorm Warning | JKL | Montgomery, Powell | 27 min |
| Jul 26, 7:26 PM EDT | Severe Thunderstorm Warning | RLX | Cabell, Mason, Wayne | 49 min |
| Jul 26, 7:36 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Menifee, Montgomery, Powell, Rowan | 39 min |
| Jul 27, 12:15 AM EDT | Flash Flood Warning | JKL | Fleming, Rowan | 3 hr |
| Jul 27, 12:53 AM EDT | Flash Flood Warning | RLX | Carter, Greenup | 112 min |
| Jul 27, 1:03 AM EDT | Flash Flood Warning | RLX | Carter, Lawrence | 117 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 12:00Z, 10.4 hours before the alert went out and 149 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
- 1791 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 262 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 12:26 PM EDT | Mesoscale Discussion | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 11 more | 2 hr |
| Jul 26, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 7 more | 9 hr |
| Jul 26, 2:25 PM EDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Livingston, McCracken | 65 min |
| Jul 26, 2:46 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Ballard, Barren, Bourbon and 65 more | 10 hr |
| Jul 26, 3:37 PM EDT | Mesoscale Discussion | SPC | Boone, Boyd, Bracken, Campbell, Carter, Fleming and 8 more | 113 min |
| Jul 26, 4:55 PM EDT | Mesoscale Discussion | SPC | Anderson, Ballard, Breckinridge, Bullitt, Butler, Caldwell and 39 more | 35 min |
| Jul 26, 4:57 PM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Breathitt, Carter, Casey, Clark and 30 more | 2 hr |
| Jul 26, 6:06 PM EDT | Mesoscale Discussion | SPC | Boyd, Greenup, Lewis | 84 min |
| Jul 26, 7:29 PM EDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 10 more | 61 min |
| Jul 26, 1:15 AM EDT | Mesoscale Discussion | SPC | Ashtabula, Columbiana, Cuyahoga, Geauga, Lake, Mahoning and 5 more | 2 hr |
| Jul 26, 4:31 AM EDT | Mesoscale Discussion | SPC | Ashtabula, Belmont, Jefferson, Monroe | 89 min |
| Jul 26, 3:08 PM EDT | Mesoscale Discussion | SPC | Hampshire, Hardy, Jefferson | 2 hr |
| Jul 26, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Berkeley, Grant, Hampshire, Hardy, Jefferson, Mineral and 2 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Kentucky, 2012Severe Thunderstorm Watches in West Virginia, 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.