Alert archive / Kentucky / Severe Thunderstorm Watches in 2012

Severe Thunderstorm Watch 526

July 26, 20124 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2012, 1:46 PM CDT for 4 states. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued
Jul 26, 2012, 1:46 PM CDT (18:46 UTC)
Expired
Jul 26, 2012, 11:30 PM CDT
In force
10 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 172 counties

Alexander County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Ballard County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Fulton County, KY, Garrard County, KY, Graves 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, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Madison County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Scott 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, Woodford County, KY, Barry County, MO, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Phelps County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Wright County, MO

The radar

The Paducah radar (KPAH), 117 km from the middle of the area, began a volume at 18:48 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
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
90%

Warnings issued inside it

59 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 26, 2:27 PM CDTSevere Thunderstorm WarningSGFDouglas29 min
Jul 26, 2:34 PM CDTSevere Thunderstorm WarningSGFTexas36 min
Jul 26, 3:21 PM CDTSevere Thunderstorm WarningPAHDaviess24 min
Jul 26, 3:24 PM CDTSevere Thunderstorm WarningLMKBullitt, Hardin31 min
Jul 26, 3:27 PM CDTSevere Thunderstorm WarningPAHJackson, Union48 min
Jul 26, 3:27 PM CDTSevere Thunderstorm WarningSGFOzark, Taney48 min
Jul 26, 3:29 PM CDTSevere Thunderstorm WarningLMKHancock, Ohio31 min
Jul 26, 3:29 PM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau, Scott, Wayne31 min
Jul 26, 3:32 PM CDTSevere Thunderstorm WarningLMKFranklin, Henry, Shelby33 min
Jul 26, 3:40 PM CDTSevere Thunderstorm WarningPAHWilliamson35 min
Jul 26, 3:45 PM CDTSevere Thunderstorm WarningPAHAlexander45 min
Jul 26, 3:45 PM CDTSevere Thunderstorm WarningLMKBullitt, Nelson, Spencer30 min
Jul 26, 3:47 PM CDTSevere Thunderstorm WarningLSXReynolds43 min
Jul 26, 3:58 PM CDTSevere Thunderstorm WarningSGFHowell32 min
Jul 26, 4:00 PM CDTSevere Thunderstorm WarningPAHAlexander30 min
Jul 26, 4:02 PM CDTSevere Thunderstorm WarningLSXRandolph28 min
Jul 26, 4:14 PM CDTSevere Thunderstorm WarningPAHGallatin, Saline46 min
Jul 26, 4:17 PM CDTSevere Thunderstorm WarningSGFHowell, Oregon, Shannon43 min
Jul 26, 4:18 PM CDTSevere Thunderstorm WarningPAHPope, Saline, Williamson29 min
Jul 26, 4:21 PM CDTSevere Thunderstorm WarningPAHBollinger, Butler, Stoddard, Wayne39 min
Jul 26, 4:29 PM CDTSevere Thunderstorm WarningPAHAlexander31 min
Jul 26, 4:31 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Bullitt, Hardin29 min
Jul 26, 4:32 PM CDTSevere Thunderstorm WarningLMKFranklin, Scott28 min
Jul 26, 4:41 PM CDTSevere Thunderstorm WarningLMKBullitt, Nelson, Spencer39 min
Jul 26, 4:42 PM CDTSevere Thunderstorm WarningLSXIron, Madison, Saint Francois27 min
Jul 26, 4:43 PM CDTSevere Thunderstorm WarningPAHGallatin32 min
Jul 26, 4:45 PM CDTSevere Thunderstorm WarningLMKFayette, Franklin, Scott, Woodford30 min
Jul 26, 4:58 PM CDTSevere Thunderstorm WarningPAHScott32 min
Jul 26, 4:59 PM CDTSevere Thunderstorm WarningLMKAnderson, Fayette, Jessamine, Mercer, Woodford31 min
Jul 26, 5:07 PM CDTSevere Thunderstorm WarningLMKBourbon, Fayette, Harrison, Nicholas, Scott28 min
Jul 26, 5:14 PM CDTSevere Thunderstorm WarningPAHWayne46 min
Jul 26, 5:20 PM CDTSevere Thunderstorm WarningLMKAnderson, Mercer, Nelson, Washington30 min
Jul 26, 5:25 PM CDTSevere Thunderstorm WarningPAHBollinger35 min
Jul 26, 5:28 PM CDTSevere Thunderstorm WarningLMKBourbon, Clark32 min
Jul 26, 5:31 PM CDTTornado WarningLMKAnderson, Mercer13 min
Jul 26, 5:37 PM CDTSevere Thunderstorm WarningLMKClark, Floyd28 min
Jul 26, 5:40 PM CDTSevere Thunderstorm WarningPAHBollinger, Butler, Scott, Stoddard, Wayne50 min
Jul 26, 5:41 PM CDTSevere Thunderstorm WarningLMKAnderson, Garrard, Jessamine, Mercer, Washington, Woodford24 min
Jul 26, 5:41 PM CDTSevere Thunderstorm WarningPAHButler, Carter, Ripley, Wayne34 min
Jul 26, 5:46 PM CDTSevere Thunderstorm WarningPAHJackson, Union29 min
Jul 26, 5:51 PM CDTSevere Thunderstorm WarningLMKClark, Scott, Washington29 min
Jul 26, 6:00 PM CDTSevere Thunderstorm WarningPAHFranklin, Hamilton, Saline, Williamson45 min
Jul 26, 6:03 PM CDTSevere Thunderstorm WarningPAHButler, Mississippi, New Madrid, Scott, Stoddard42 min
Jul 26, 6:05 PM CDTSevere Thunderstorm WarningLMKGarrard, Jessamine, Madison, Mercer, Woodford30 min
Jul 26, 6:14 PM CDTSevere Thunderstorm WarningLMKClark16 min
Jul 26, 6:16 PM CDTSevere Thunderstorm WarningPAHButler, Ripley29 min
Jul 26, 6:20 PM CDTSevere Thunderstorm WarningLMKClark, Jefferson, Scott19 min
Jul 26, 6:26 PM CDTSevere Thunderstorm WarningPAHButler, New Madrid, Scott, Stoddard19 min
Jul 26, 6:42 PM CDTSevere Thunderstorm WarningLMKBoyle, Marion, Mercer, Washington33 min
Jul 26, 6:51 PM CDTSevere Thunderstorm WarningLMKGarrard, Madison29 min
Jul 26, 6:53 PM CDTSevere Thunderstorm WarningLMKClark, Jefferson, Scott14 min
Jul 26, 9:07 PM CDTSevere Thunderstorm WarningLMKLarue, Marion, Nelson, Washington28 min
Jul 26, 9:36 PM CDTSevere Thunderstorm WarningLMKBoyle, Casey, Marion, Taylor9 min
Jul 26, 9:38 PM CDTSevere Thunderstorm WarningLMKBullitt, Spencer27 min
Jul 26, 9:53 PM CDTSevere Thunderstorm WarningLMKGreen, Hart, Larue, Marion, Taylor20 min
Jul 26, 10:00 PM CDTSevere Thunderstorm WarningLMKFranklin, Shelby, Woodford30 min
Jul 26, 10:14 PM CDTSevere Thunderstorm WarningLMKAnderson, Fayette, Franklin, Scott, Woodford31 min
Jul 26, 10:32 PM CDTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Harrison, Scott, Woodford28 min
Jul 26, 10:50 PM CDTSevere Thunderstorm WarningLMKBourbon, Clark, Harrison, Nicholas30 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

Lincoln, IL (KILX), launched 12:00Z, 6.8 hours before the alert went out and 241 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2012-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 98 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -83 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
98 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
1355 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-83 m²/s²
0-3 km storm-relative helicity
-30 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 1:44 PM CDTMesoscale DiscussionSPCBaxter, Boone, Carroll, Clay, Cleburne, Conway and 24 more3 hr
Jul 26, 5:27 PM CDTMesoscale DiscussionSPCClark, Clay, Cleburne, Conway, Craighead, Crittenden and 42 more33 min
Jul 26, 5:46 PM CDTSevere Thunderstorm WatchSPCClark, Clay, Cleburne, Conway, Craighead, Crawford and 45 more6 hr
Jul 26, 6:29 PM CDTMesoscale DiscussionSPCClay61 min
Jul 25, 8:40 PM CDTMesoscale DiscussionSPCCarroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more65 min
Jul 25, 8:57 PM CDTSevere Thunderstorm WatchSPCCarroll, Jo Daviess, Lee, Ogle, Rock Island, Stephenson and 2 more6 hr
Jul 25, 11:34 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 7 more86 min
Jul 26, 1:40 AM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 15 more65 min
Jul 26, 12:09 PM CDTMesoscale DiscussionSPCBoone, McHenry2 hr
Jul 26, 1:25 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Cumberland, Edwards and 27 more65 min
Jul 26, 3:55 PM CDTMesoscale DiscussionSPCAlexander, Clay, Clinton, Crawford, Edwards, Franklin and 24 more35 min
Jul 26, 11:26 AM CDTMesoscale DiscussionSPCBartholomew, Blackford, Brown, Clark, Clay, Crawford and 37 more2 hr
Jul 26, 12:16 PM CDTSevere Thunderstorm WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more9 hr
Jul 26, 2:37 PM CDTMesoscale DiscussionSPCBoone, Boyd, Bracken, Campbell, Carter, Fleming and 8 more113 min
Jul 26, 3:57 PM CDTMesoscale DiscussionSPCBath, Bourbon, Breathitt, Carter, Casey, Clark and 30 more2 hr
Jul 26, 5:06 PM CDTMesoscale DiscussionSPCBoyd, Greenup, Lewis84 min
Jul 26, 5:26 PM CDTSevere Thunderstorm WatchSPCBath, Boyd, Breathitt, Carter, Clay, Elliott and 24 more7 hr
Jul 25, 7:21 PM CDTMesoscale DiscussionSPCAtchison54 min

Nearby

Severe Thunderstorm Watches in Kentucky, 2012Severe Thunderstorm Watches in Indiana, 2012Severe Thunderstorm Watches in Illinois, 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.