Alert archive / Tennessee / Mesoscale Discussions in 2003

Mesoscale Discussion 1317

June 11, 200317 counties in Kentucky; 22 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2003, 10:57 AM EDT for 17 counties in Kentucky; 22 counties in Tennessee. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2003, 10:57 AM EDT (14:57 UTC)
Expired
Jun 11, 2003, 12:00 PM EDT
In force
63 min
Issued by
the Storm Prediction Center
All 39 counties

Bell County, KY, Clay County, KY, Clinton County, KY, Estill County, KY, Harlan County, KY, Jackson County, KY, Knox County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, McCreary County, KY, Owsley County, KY, Perry County, KY, Pulaski County, KY, Rockcastle County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bledsoe County, TN, Campbell County, TN, Cannon County, TN, Claiborne County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grundy County, TN, Meigs County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Knoxville radar (KMRX), 115 km from the middle of the area, began a volume at 14:58 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 12:00Z, 3.0 hours before the alert went out and 188 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 2003-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1603 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 2003-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 216 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
1603 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
757 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
216 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

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
Jun 10, 8:57 PM EDTMesoscale DiscussionSPCAnderson, Bath, Boone, Bourbon, Boyle, Bracken and 54 more2 hr
Jun 11, 11:30 AM EDTSevere Thunderstorm WatchSPCBell, Breathitt, Clay, Clinton, Estill, Floyd and 23 more6 hr
Jun 11, 2:13 PM EDTMesoscale DiscussionSPCBell, Breathitt, Clay, Clinton, Floyd, Harlan and 12 more92 min
Jun 11, 4:01 PM EDTMesoscale DiscussionSPCAdair, Allen, Barren, Caldwell, Calloway, Christian and 10 more29 min
Jun 11, 4:25 PM EDTSevere Thunderstorm WatchSPCBell, Clinton, Cumberland, Harlan, Knox, McCreary and 4 more5 hr
Jun 11, 4:30 PM EDTSevere Thunderstorm WatchSPCAllen, Barren, Calloway, Christian, Graves, Logan and 8 more5 hr
Jun 11, 5:57 PM EDTMesoscale DiscussionSPCAllen, Clinton, Cumberland, Logan, McCreary, Monroe and 2 more93 min
Jun 11, 5:53 AM EDTMesoscale DiscussionSPCLauderdale, Shelby, Tipton3 hr
Jun 11, 10:21 AM EDTMesoscale DiscussionSPCChester, Decatur, Fayette, Hardeman, Hardin, Haywood and 7 more54 min
Jun 11, 11:45 AM EDTSevere Thunderstorm WatchSPCBedford, Benton, Cannon, Carroll, Cheatham, Chester and 33 more5 hr
Jun 11, 1:26 PM EDTMesoscale DiscussionSPCBedford, Benton, Cannon, Carroll, Cheatham, Chester and 31 more64 min

Nearby

Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Kentucky, 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.