Alert archive / Kentucky / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 268
The Storm Prediction Center issued this severe thunderstorm watch at May 10, 2011, 1:10 PM EDT for 4 states. It took effect at May 10, 2011, 1:15 PM EDT. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 10, 2011, 1:10 PM EDT (17:10 UTC)
- In effect from
- May 10, 2011, 1:15 PM EDT
- Expired
- May 10, 2011, 8:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 184 counties
Bartholomew County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Floyd County, IN, Fountain County, IN, Franklin County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Perry County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Switzerland County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Washington County, IN, Wayne County, IN, Anderson County, KY, Bath County, KY, Bell County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harlan County, KY, Harrison County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, McCreary County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Jackson County, OH, Lawrence County, OH, Logan County, OH, Madison County, OH, Meigs County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Vinton County, OH, Warren County, OH, Boone County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Roane County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV
The radar
The Cincinnati radar (KILN), 122 km from the middle of the area, began a volume at 17:13 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
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
66 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 1:10 PM EDT | Severe Thunderstorm Warning | IND | Clinton, Montgomery, Tippecanoe | 35 min |
| May 10, 1:42 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Hancock, Madison | 33 min |
| May 10, 1:58 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Madison | 32 min |
| May 10, 2:15 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Madison | 45 min |
| May 10, 2:29 PM EDT | Tornado Warning | IND | Delaware, Madison | 36 min |
| May 10, 2:36 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Henry, Madison | 24 min |
| May 10, 2:44 PM EDT | Severe Thunderstorm Warning | ILN | Mason, Robertson | 46 min |
| May 10, 2:45 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Estill, Fleming, Menifee, Montgomery, Powell and 1 more | 60 min |
| May 10, 2:49 PM EDT | Severe Thunderstorm Warning | LMK | Bourbon, Harrison, Nicholas | 26 min |
| May 10, 2:53 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Randolph | 52 min |
| May 10, 2:56 PM EDT | Severe Thunderstorm Warning | IND | Henry, Madison | 18 min |
| May 10, 3:05 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Madison | 40 min |
| May 10, 3:11 PM EDT | Severe Thunderstorm Warning | ILN | Bracken, Pendleton | 49 min |
| May 10, 3:15 PM EDT | Severe Thunderstorm Warning | LMK | Bourbon, Nicholas | 30 min |
| May 10, 3:33 PM EDT | Severe Thunderstorm Warning | ILN | Bracken, Mason, Pendleton, Robertson | 57 min |
| May 10, 3:35 PM EDT | Severe Thunderstorm Warning | LMK | Harrison, Nicholas | 25 min |
| May 10, 3:43 PM EDT | Severe Thunderstorm Warning | IND | Delaware, Randolph | 62 min |
| May 10, 3:44 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Fleming, Menifee, Montgomery, Rowan | 46 min |
| May 10, 3:45 PM EDT | Severe Thunderstorm Warning | LMK | Nicholas | 15 min |
| May 10, 3:51 PM EDT | Flash Flood Warning | ILN | Bracken, Pendleton, Robertson | 3 hr |
| May 10, 3:55 PM EDT | Severe Thunderstorm Warning | LMK | Harrison, Nicholas | 35 min |
| May 10, 3:57 PM EDT | Severe Thunderstorm Warning | ILN | Ross | 48 min |
| May 10, 3:58 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Carter, Greenup, Lawrence | 47 min |
| May 10, 4:01 PM EDT | Severe Thunderstorm Warning | ILN | Auglaize, Darke, Mercer | 59 min |
| May 10, 4:07 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Fleming | 53 min |
| May 10, 4:07 PM EDT | Severe Thunderstorm Warning | ILN | Pike, Scioto | 32 min |
| May 10, 4:12 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Greenup | 48 min |
| May 10, 4:17 PM EDT | Severe Thunderstorm Warning | RLX | Gallia, Jackson, Lawrence | 58 min |
| May 10, 4:22 PM EDT | Severe Thunderstorm Warning | LMK | Nicholas | 23 min |
| May 10, 4:28 PM EDT | Severe Thunderstorm Warning | RLX | Gallia, Jackson, Meigs, Vinton | 62 min |
| May 10, 4:32 PM EDT | Severe Thunderstorm Warning | ILN | Hocking, Ross | 58 min |
| May 10, 4:36 PM EDT | Flash Flood Warning | JKL | Bath, Menifee, Montgomery | 3 hr |
| May 10, 4:42 PM EDT | Severe Thunderstorm Warning | JKL | Bath, Fleming, Montgomery, Rowan | 55 min |
| May 10, 4:45 PM EDT | Flash Flood Warning | LMK | Nicholas | 84 min |
| May 10, 4:45 PM EDT | Severe Thunderstorm Warning | LMK | Nicholas | 30 min |
| May 10, 5:08 PM EDT | Severe Thunderstorm Warning | RLX | Gallia, Lawrence | 52 min |
| May 10, 5:16 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Greenup | 59 min |
| May 10, 5:19 PM EDT | Severe Thunderstorm Warning | RLX | Fayette, Kanawha | 56 min |
| May 10, 5:22 PM EDT | Severe Thunderstorm Warning | ILN | Hocking, Pickaway, Ross | 53 min |
| May 10, 5:24 PM EDT | Severe Thunderstorm Warning | RLX | Athens, Gallia, Jackson, Meigs, Vinton | 66 min |
| May 10, 5:25 PM EDT | Severe Thunderstorm Warning | ILN | Mercer | 50 min |
| May 10, 5:29 PM EDT | Flash Flood Warning | RLX | Boyd, Greenup | 10 hr |
| May 10, 5:32 PM EDT | Severe Thunderstorm Warning | RLX | Clay, Jackson, Kanawha, Putnam | 58 min |
| May 10, 5:41 PM EDT | Flash Flood Warning | RLX | Boone, Fayette, Kanawha, Putnam | 3 hr |
| May 10, 5:49 PM EDT | Flash Flood Warning | RLX | Gallia, Jackson, Lawrence, Meigs, Vinton | 10 hr |
| May 10, 5:56 PM EDT | Severe Thunderstorm Warning | RLX | Jackson | 34 min |
| May 10, 6:00 PM EDT | Severe Thunderstorm Warning | RLX | Clay, Fayette, Kanawha, Nicholas, Raleigh | 45 min |
| May 10, 6:11 PM EDT | Severe Thunderstorm Warning | RLX | Lawrence | 39 min |
| May 10, 6:20 PM EDT | Flash Flood Warning | ILN | Hocking, Pickaway, Ross | 7 hr |
| May 10, 6:21 PM EDT | Severe Thunderstorm Warning | ILN | Scioto | 39 min |
| May 10, 6:22 PM EDT | Severe Thunderstorm Warning | RLX | Kanawha, Mason, Putnam | 36 min |
| May 10, 6:23 PM EDT | Severe Thunderstorm Warning | RLX | Gallia, Jackson, Lawrence, Vinton | 67 min |
| May 10, 6:32 PM EDT | Flash Flood Warning | RLX | Clay, Fayette, Kanawha, Nicholas | 119 min |
| May 10, 6:45 PM EDT | Severe Thunderstorm Warning | ILN | Lewis, Mason | 45 min |
| May 10, 6:49 PM EDT | Tornado Warning | RLX | Gallia, Jackson, Lawrence | 26 min |
| May 10, 7:03 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Greenup, Lawrence | 57 min |
| May 10, 7:14 PM EDT | Severe Thunderstorm Warning | JKL | Fleming, Rowan | 46 min |
| May 10, 7:14 PM EDT | Flash Flood Warning | ILN | Pike, Scioto | 5 hr |
| May 10, 7:14 PM EDT | Severe Thunderstorm Warning | RLX | Clay, Fayette, Kanawha, Nicholas, Roane | 46 min |
| May 10, 7:16 PM EDT | Tornado Warning | ILN | Lewis | 29 min |
| May 10, 7:27 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Carter, Greenup, Lawrence | 48 min |
| May 10, 7:27 PM EDT | Severe Thunderstorm Warning | ILN | Scioto | 48 min |
| May 10, 7:30 PM EDT | Severe Thunderstorm Warning | RLX | Logan, Mingo, Wayne | 45 min |
| May 10, 7:43 PM EDT | Flash Flood Warning | RLX | Boyd, Carter, Greenup, Lawrence | 8 hr |
| May 10, 7:43 PM EDT | Severe Thunderstorm Warning | RLX | Fayette, Kanawha, Raleigh, Wyoming | 47 min |
| May 10, 7:58 PM EDT | Severe Thunderstorm Warning | RLX | Boyd, Greenup, Lawrence | 62 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, 5.2 hours before the alert went out and 124 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
- 9 J/kg
- Mixed-layer CIN
- -487 J/kg
- Mixed-layer LCL
- 1473 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 11:21 AM EDT | Mesoscale Discussion | SPC | Bartholomew, Clark, Dearborn, Decatur, Fayette, Franklin and 13 more | 114 min |
| May 10, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Benton, Blackford, Cass, DeKalb and 19 more | 4 hr |
| May 10, 4:32 PM EDT | Mesoscale Discussion | SPC | Adams, Blackford, Delaware, Grant, Huntington, Jay and 4 more | 88 min |
| May 10, 7:17 PM EDT | Mesoscale Discussion | SPC | Bath, Boyd, Breathitt, Carter, Elliott, Fleming and 17 more | 28 min |
| May 10, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | Bath, Boyd, Carter, Elliott, Fleming, Floyd and 10 more | 5 hr |
| May 10, 2:18 PM EDT | Mesoscale Discussion | SPC | Bland, Carroll, Grayson, Russell, Smyth, Tazewell and 4 more | 87 min |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Bland, Buchanan, Carroll, Dickenson, Floyd, Giles and 16 more | 8 hr |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | Bland, Buchanan, Carroll, Dickenson, Grayson, Russell and 9 more | 58 min |
Nearby
Severe Thunderstorm Watches in Kentucky, 2011Severe Thunderstorm Watches in Indiana, 2011Severe Thunderstorm Watches in Ohio, 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; radar from the NEXRAD Level II archive.