Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 866

May 8, 2003Hamilton County, White County, Illinois; 11 counties in Indiana; 32 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at May 8, 2003, 7:06 PM CDT for Hamilton County, White County, Illinois; 11 counties in Indiana; 32 counties in Kentucky. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
May 8, 2003, 7:06 PM CDT (00:06 UTC)
Expired
May 8, 2003, 8:00 PM CDT
In force
54 min
Issued by
the Storm Prediction Center
All 45 counties

Hamilton County, IL, White County, IL, 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, Adair County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Warren County, KY, Washington County, KY

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.1 hours before the alert went out and 162 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 2003-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1485 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 00:00Z on 2003-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 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
1485 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
791 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.1

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 8, 7:55 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Hancock, Henderson, Pike, Scott5 hr
May 8, 9:10 PM CDTSevere Thunderstorm WatchSPCBureau, Carroll, Cass, Champaign, DeKalb, DeWitt and 32 more6 hr
May 8, 9:27 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Carroll, Cass, Champaign and 40 more93 min
May 8, 11:50 PM CDTMesoscale DiscussionSPCAdams, Brown, Hancock, Henderson, Pike, Scott55 min
May 9, 12:05 AM CDTSevere Thunderstorm WatchSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 28 more6 hr
May 9, 2:02 PM CDTMesoscale DiscussionSPCEdwards, Lawrence, Wabash, Wayne, White2 hr
May 9, 2:48 PM CDTMesoscale DiscussionSPCClinton, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more117 min
May 9, 4:17 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 21 more28 min
May 9, 4:45 PM CDTTornado WatchSPCCalhoun, Greene, Morgan, Pike, Scott6 hr
May 9, 5:44 PM CDTMesoscale DiscussionSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 15 more31 min
May 9, 6:05 PM CDTTornado WatchSPCBond, Champaign, Christian, Clark, Clinton, Coles and 13 more5 hr
May 9, 1:21 AM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 51 more84 min
May 9, 1:45 AM CDTSevere Thunderstorm WatchSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 34 more5 hr
May 9, 5:04 AM CDTMesoscale DiscussionSPCAdams, Allen, Blackford, Boone, Carroll, Cass and 34 more86 min
May 9, 2:40 PM CDTSevere Thunderstorm WatchSPCBartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 22 more5 hr
May 9, 5:00 PM CDTSevere Thunderstorm WatchSPCBoyd, Johnson, Lawrence, Martin5 hr
May 9, 5:26 PM CDTMesoscale DiscussionSPCAnderson, Bath, Bourbon, Boyle, Breathitt, Bullitt and 41 more64 min
May 9, 6:35 PM CDTSevere Thunderstorm WatchSPCBell, Boyle, Breathitt, Casey, Clay, Clinton and 24 more5 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.