Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 936

May 11, 20037 states

The Storm Prediction Center issued this mesoscale discussion at May 11, 2003, 1:46 AM CDT for 7 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued
May 11, 2003, 1:46 AM CDT (06:46 UTC)
Expired
May 11, 2003, 3:15 AM CDT
In force
89 min
Issued by
the Storm Prediction Center
All 217 counties

Colbert County, AL, Lauderdale County, AL, Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Hancock County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Fountain County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks 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, Orange County, IN, Owen County, IN, Parke County, IN, Perry County, IN, Pike County, IN, Putnam County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Anderson 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, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby 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, Webster County, KY, Woodford County, KY, City of Saint Louis, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Madison County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Shelby County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN

The radar

The Paducah radar (KPAH), 66 km from the middle of the area, began a volume at 06:50 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 6.8 hours before the alert went out and 243 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 00:00Z on 2003-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1200 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2003-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 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
1200 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1378 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 11:20 PM CDTTornado WatchSPCColbert, Franklin, Lauderdale6 hr
May 11, 3:10 AM CDTMesoscale DiscussionSPCBibb, Blount, Cullman, DeKalb, Fayette, Greene and 17 more95 min
May 11, 3:20 AM CDTSevere Thunderstorm WatchSPCBlount, Cullman, Fayette, Jackson, Jefferson, Lamar and 8 more5 hr
May 11, 5:22 AM CDTMesoscale DiscussionSPCBlount, Cullman, Fayette, Jackson, Jefferson, Lamar and 8 more83 min
May 11, 12:20 PM CDTMesoscale DiscussionSPCBaldwin, Barbour, Bullock, Butler, Clarke, Coffee and 18 more115 min
May 11, 1:15 PM CDTSevere Thunderstorm WatchSPCAutauga, Barbour, Bullock, Butler, Chambers, Chilton and 20 more6 hr
May 11, 3:00 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Choctaw, Clarke and 14 more2 hr
May 10, 7:06 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Hardin, Jackson, Johnson, Massac and 7 more54 min
May 10, 8:05 PM CDTTornado WatchSPCBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more6 hr
May 10, 8:18 PM CDTMesoscale DiscussionSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 8 more117 min
May 10, 8:41 PM CDTMesoscale DiscussionSPCCrawford, Lawrence, Richland, Wabash2 hr
May 10, 8:45 PM CDTTornado WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more5 hr
May 10, 9:10 PM CDTTornado WatchSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 45 more5 hr
May 10, 9:35 PM CDTTornado WatchSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 11 more3 hr
May 10, 10:56 PM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Ford and 19 more94 min
May 10, 10:40 PM CDTMesoscale DiscussionSPCDeKalb, Elkhart, Kosciusko, LaGrange, LaPorte, Marshall and 5 more2 hr
May 10, 11:00 PM CDTTornado WatchSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 15 more6 hr
May 10, 11:28 PM CDTMesoscale DiscussionSPCDearborn, Fayette, Franklin, Jay, Ohio, Randolph and 4 more2 hr
May 10, 8:28 PM CDTMesoscale DiscussionSPCBreathitt, Floyd, Johnson, Knott, Magoffin, Martin and 1 more62 min
May 10, 10:04 PM CDTMesoscale DiscussionSPCAllen, Barren, Breckinridge, Butler, Caldwell, Calloway and 23 more116 min
May 11, 4:16 AM CDTMesoscale DiscussionSPCAdair, Anderson, Barren, Bath, Bell, Bourbon and 68 more59 min
May 11, 5:05 AM CDTSevere Thunderstorm WatchSPCBath, Bell, Bourbon, Boyle, Breathitt, Casey and 38 more4 hr
May 11, 5:55 AM CDTSevere Thunderstorm WatchSPCBell, Harlan5 hr

Nearby

Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Illinois, 2003Every mesoscale discussion in 2003

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.