Alert archive / Kentucky / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 28
The Storm Prediction Center issued this severe thunderstorm watch at Apr 7, 2015, 1:37 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2015, 1:37 PM CDT (18:37 UTC)
- Expired
- Apr 7, 2015, 7:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 78 counties
Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Anderson County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Casey County, KY, Clark County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Livingston County, KY, Madison County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Union County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Bollinger County, MO, Cape Girardeau County, MO, Perry County, MO
The radar
The Evansville,IN radar (KVWX), 37 km from the middle of the area, began a volume at 18:37 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
- 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
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
40 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 2:15 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Williamson | 45 min |
| Apr 7, 2:20 PM CDT | Severe Thunderstorm Warning | PAH | Vanderburgh, Warrick | 25 min |
| Apr 7, 2:24 PM CDT | Flash Flood Warning | LMK | Crawford, Dubois, Orange | 3 hr |
| Apr 7, 2:44 PM CDT | Severe Thunderstorm Warning | PAH | Spencer, Warrick | 31 min |
| Apr 7, 2:50 PM CDT | Tornado Warning | PAH | Spencer, Warrick | 25 min |
| Apr 7, 2:53 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Dubois | 32 min |
| Apr 7, 3:04 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 21 min |
| Apr 7, 3:10 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Perry | 30 min |
| Apr 7, 3:11 PM CDT | Flash Flood Warning | LMK | Clark, Crawford, Floyd, Harrison, Washington | 3 hr |
| Apr 7, 3:21 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Dubois, Perry | 24 min |
| Apr 7, 3:34 PM CDT | Severe Thunderstorm Warning | LMK | Harrison | 31 min |
| Apr 7, 3:34 PM CDT | Tornado Warning | LMK | Crawford, Harrison, Perry | 21 min |
| Apr 7, 3:37 PM CDT | Tornado Warning | LMK | Harrison | 18 min |
| Apr 7, 3:39 PM CDT | Severe Thunderstorm Warning | PAH | McLean, Webster | 17 min |
| Apr 7, 3:40 PM CDT | Flash Flood Warning | LMK | Clark | 3 hr |
| Apr 7, 3:56 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Floyd, Harrison | 29 min |
| Apr 7, 3:58 PM CDT | Severe Thunderstorm Warning | LMK | Henry, Oldham, Trimble | 32 min |
| Apr 7, 4:04 PM CDT | Severe Thunderstorm Warning | LMK | Harrison | 31 min |
| Apr 7, 4:05 PM CDT | Flash Flood Warning | LMK | Breckinridge, Grayson, Hancock, Ohio | 3 hr |
| Apr 7, 4:12 PM CDT | Severe Thunderstorm Warning | LMK | Clark | 28 min |
| Apr 7, 4:17 PM CDT | Tornado Warning | LMK | Henry | 18 min |
| Apr 7, 4:30 PM CDT | Severe Thunderstorm Warning | LMK | Hardin, Larue, Nelson | 30 min |
| Apr 7, 4:32 PM CDT | Flash Flood Warning | LMK | Jefferson, Oldham | 3 hr |
| Apr 7, 4:33 PM CDT | Severe Thunderstorm Warning | LMK | Floyd, Harrison | 32 min |
| Apr 7, 4:36 PM CDT | Severe Thunderstorm Warning | LMK | Franklin, Scott | 29 min |
| Apr 7, 4:40 PM CDT | Severe Thunderstorm Warning | LMK | Bullitt, Hardin, Jefferson, Nelson, Spencer | 30 min |
| Apr 7, 4:51 PM CDT | Severe Thunderstorm Warning | LMK | Larue, Marion, Nelson, Washington | 29 min |
| Apr 7, 4:54 PM CDT | Severe Thunderstorm Warning | LMK | Garrard, Jessamine, Mercer | 31 min |
| Apr 7, 5:01 PM CDT | Tornado Warning | LMK | Garrard, Jessamine, Madison, Mercer | 29 min |
| Apr 7, 5:08 PM CDT | Flash Flood Warning | LMK | Bourbon, Fayette, Franklin, Oldham, Scott, Shelby and 2 more | 6 hr |
| Apr 7, 5:08 PM CDT | Severe Thunderstorm Warning | LMK | Green, Hart, Larue, Taylor | 32 min |
| Apr 7, 5:21 PM CDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Marion, Mercer, Washington | 29 min |
| Apr 7, 5:21 PM CDT | Tornado Warning | LMK | Garrard, Madison | 29 min |
| Apr 7, 5:28 PM CDT | Flash Flood Warning | LMK | Butler, Edmonson, Grayson, Green, Hart, Warren | 3 hr |
| Apr 7, 5:29 PM CDT | Tornado Warning | LMK | Boyle, Casey, Marion | 26 min |
| Apr 7, 5:46 PM CDT | Tornado Warning | LMK | Madison | 24 min |
| Apr 7, 5:52 PM CDT | Severe Thunderstorm Warning | LMK | Boyle, Casey, Lincoln | 28 min |
| Apr 7, 6:12 PM CDT | Tornado Warning | LMK | Madison | 18 min |
| Apr 7, 6:15 PM CDT | Severe Thunderstorm Warning | LMK | Clark, Madison | 30 min |
| Apr 7, 6:19 PM CDT | Severe Thunderstorm Warning | LMK | Casey, Lincoln | 31 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, 6.6 hours before the alert went out and 234 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
- 593 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 594 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:17 AM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Franklin, Hamilton, Jackson, Jefferson and 11 more | 88 min |
| Apr 7, 8:34 AM CDT | Severe Thunderstorm Watch | SPC | Clinton, Franklin, Jackson, Jefferson, Johnson, Madison and 7 more | 7 hr |
| Apr 7, 10:51 AM CDT | Mesoscale Discussion | SPC | Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 11 more | 54 min |
| Apr 7, 1:14 PM CDT | Mesoscale Discussion | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 7 more | 61 min |
| Apr 7, 2:53 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 97 min |
| Apr 7, 3:34 PM CDT | Mesoscale Discussion | SPC | Anderson, Boyle, Bullitt, Edmonson, Franklin, Grayson and 13 more | 86 min |
| Apr 7, 5:34 PM CDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyle, Breathitt, Carter, Casey and 35 more | 56 min |
| Apr 7, 5:58 PM CDT | Severe Thunderstorm Watch | SPC | Bath, Breathitt, Clay, Elliott, Estill, Floyd and 17 more | 2 hr |
| Apr 7, 3:51 AM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Caldwell, Carroll, Chariton, Daviess and 9 more | 54 min |
| Apr 7, 5:03 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Cass, Cedar, Dade, Greene and 9 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Kentucky, 2015Severe Thunderstorm Watches in Illinois, 2015Severe Thunderstorm Watches in Indiana, 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.