Alert archive / Tennessee / Mesoscale Discussions in 2011
Mesoscale Discussion 1297
The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2011, 3:12 PM CDT for 7 counties in Kentucky; 38 counties in Tennessee. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2011, 3:12 PM CDT (20:12 UTC)
- Expired
- Jun 19, 2011, 5:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Clinton County, KY, Cumberland County, KY, Knox County, KY, McCreary County, KY, Monroe County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Claiborne County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grainger County, TN, Grundy County, TN, Hamilton County, TN, Jackson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 137 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 139 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.
- Mixed-layer CAPE
- 1891 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 255 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 2:14 AM CDT | Mesoscale Discussion | SPC | Ballard, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 22 more | 61 min |
| Jun 19, 2:55 AM CDT | Tornado Watch | SPC | Adair, Allen, Ballard, Barren, Breckinridge, Bullitt and 47 more | 6 hr |
| Jun 19, 4:39 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Ballard, Barren, Breckinridge and 48 more | 66 min |
| Jun 19, 5:46 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Ballard, Barren, Breckinridge and 51 more | 59 min |
| Jun 19, 7:51 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Casey, Clinton, Cumberland and 9 more | 114 min |
| Jun 19, 12:23 PM CDT | Mesoscale Discussion | SPC | Adair, Bell, Casey, Clinton, Cumberland, Knox and 9 more | 67 min |
| Jun 19, 12:52 PM CDT | Tornado Watch | SPC | Allen, Bell, Clinton, Cumberland, Knox, Logan and 5 more | 8 hr |
| Jun 19, 4:30 PM CDT | Mesoscale Discussion | SPC | Allen, Ballard, Barren, Caldwell, Calloway, Carlisle and 20 more | 30 min |
| Jun 19, 5:01 PM CDT | Tornado Watch | SPC | Allen, Ballard, Barren, Caldwell, Calloway, Carlisle and 16 more | 5 hr |
| Jun 19, 6:18 PM CDT | Mesoscale Discussion | SPC | Allen, Clinton, Cumberland, Logan, McCreary, Monroe and 4 more | 57 min |
Nearby
Mesoscale Discussions in Tennessee, 2011Mesoscale Discussions in Kentucky, 2011Every mesoscale discussion in 2011
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.