Alert archive / Kentucky / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 668

July 22, 2004Spencer County, Indiana; 69 counties in Kentucky; Montgomery County, Robertson County, Stewart County, Tennessee

The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2004, 3:45 PM CDT for Spencer County, Indiana; 69 counties in Kentucky; Montgomery County, Robertson County, Stewart County, Tennessee. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 22, 2004, 3:45 PM CDT (20:45 UTC)
Expired
Jul 22, 2004, 9:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 73 counties

Spencer County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jackson County, KY, Jessamine County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Owsley County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Montgomery County, TN, Robertson County, TN, Stewart County, TN

The radar

The Louisville radar (KLVX), 60 km from the middle of the area, began a volume at 20:47 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 22, 3:52 PM CDTSevere Thunderstorm WarningLMKHardin, Larue, Nelson38 min
Jul 22, 3:53 PM CDTSevere Thunderstorm WarningPAHSpencer52 min
Jul 22, 4:20 PM CDTFlash Flood WarningPAHUnion3 hr
Jul 22, 4:41 PM CDTSevere Thunderstorm WarningPAHHenderson49 min
Jul 22, 4:58 PM CDTSevere Thunderstorm WarningPAHDaviess47 min
Jul 22, 5:13 PM CDTSevere Thunderstorm WarningPAHMcLean32 min
Jul 22, 5:23 PM CDTSevere Thunderstorm WarningLMKMeade52 min
Jul 22, 5:25 PM CDTSevere Thunderstorm WarningLMKBullitt, Jefferson35 min
Jul 22, 5:30 PM CDTSevere Thunderstorm WarningLMKOhio60 min
Jul 22, 5:31 PM CDTSevere Thunderstorm WarningLMKHardin29 min
Jul 22, 5:58 PM CDTSevere Thunderstorm WarningLMKNelson47 min
Jul 22, 5:59 PM CDTSevere Thunderstorm WarningLMKButler46 min
Jul 22, 6:07 PM CDTSevere Thunderstorm WarningLMKLarue38 min
Jul 22, 6:19 PM CDTSevere Thunderstorm WarningLMKMarion41 min
Jul 22, 6:36 PM CDTSevere Thunderstorm WarningLMKTaylor39 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, 8.8 hours before the alert went out and 154 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, Nashville Metro, TN at 12:00Z on 2004-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 459 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, Nashville Metro, TN at 12:00Z on 2004-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
459 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
923 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 7:49 PM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 41 more56 min
Jul 21, 9:16 PM CDTMesoscale DiscussionSPCAdams, Bartholomew, Blackford, Brown, Clay, Dearborn and 21 more59 min
Jul 22, 11:59 AM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 34 more2 hr
Jul 22, 12:20 PM CDTSevere Thunderstorm WatchSPCBenton, Clay, Fountain, Jasper, Lake, Montgomery and 9 more6 hr
Jul 22, 1:52 PM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Benton, Blackford, Boone and 80 more83 min
Jul 22, 3:05 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Bartholomew, Benton, Blackford, Boone and 78 more6 hr
Jul 22, 6:42 PM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Clark, Crawford and 38 more93 min
Jul 22, 6:49 AM CDTMesoscale DiscussionSPCBreathitt, Floyd, Harlan, Knott, Leslie, Letcher and 4 more116 min

Nearby

Severe Thunderstorm Watches in Kentucky, 2004Severe Thunderstorm Watches in Tennessee, 2004Severe Thunderstorm Watches in Indiana, 2004Every severe thunderstorm watch in 2004

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.