Alert archive / Kentucky / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 29
The Storm Prediction Center issued this severe thunderstorm watch at Apr 7, 2015, 6:58 PM EDT for 23 counties in Kentucky. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2015, 6:58 PM EDT (22:58 UTC)
- Expired
- Apr 7, 2015, 9:23 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 23 counties
Bath County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Floyd County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Magoffin County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wolfe County, KY
The radar
The Jackson,KY radar (KJKL), 34 km from the middle of the area, began a volume at 23:01 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:10 PM EDT | Tornado Warning | JKL | Estill, Jackson, Lee | 50 min |
| Apr 7, 7:19 PM EDT | Severe Thunderstorm Warning | JKL | Jackson, Laurel, Pulaski, Rockcastle | 56 min |
| Apr 7, 7:23 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Estill, Lee, Menifee, Montgomery, Morgan and 3 more | 52 min |
| Apr 7, 7:35 PM EDT | Flash Flood Warning | JKL | Bath, Menifee, Montgomery | 6 hr |
| Apr 7, 7:55 PM EDT | Tornado Warning | JKL | Breathitt, Estill, Lee, Wolfe | 35 min |
| Apr 7, 7:57 PM EDT | Flash Flood Warning | JKL | Estill, Jackson, Lee, Owsley, Powell, Wolfe | 6 hr |
| Apr 7, 8:28 PM EDT | Tornado Warning | JKL | Breathitt, Lee, Magoffin, Wolfe | 20 min |
| Apr 7, 8:45 PM EDT | Severe Thunderstorm Warning | JKL | Laurel, McCreary, Pulaski, Whitley | 30 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, 11.0 hours before the alert went out and 196 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
- 631 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 11:51 AM EDT | Mesoscale Discussion | SPC | Union | 54 min |
| Apr 7, 2:14 PM EDT | Mesoscale Discussion | SPC | Crittenden, Daviess, Hancock, Henderson, McLean, Union and 1 more | 61 min |
| Apr 7, 2:37 PM EDT | Severe Thunderstorm Watch | SPC | Anderson, Bourbon, Boyle, Breckinridge, Bullitt, Butler and 41 more | 5 hr |
| Apr 7, 3:53 PM EDT | Mesoscale Discussion | SPC | Ballard, Breckinridge, Bullitt, Butler, Caldwell, Christian and 21 more | 97 min |
| Apr 7, 4:34 PM EDT | Mesoscale Discussion | SPC | Anderson, Boyle, Bullitt, Edmonson, Franklin, Grayson and 13 more | 86 min |
| Apr 7, 6:34 PM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyle, Breathitt, Carter, Casey and 35 more | 56 min |
Nearby
Severe Thunderstorm Watches in Kentucky, 2015Every severe thunderstorm watch in 2015
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.