Alert archive / Tennessee / Mesoscale Discussions in 2011
Mesoscale Discussion 1422
The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2011, 4:17 PM EDT for 5 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2011, 4:17 PM EDT (20:17 UTC)
- Expired
- Jun 27, 2011, 5:45 PM EDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 80 counties
Catoosa County, GA, Dade County, GA, Walker County, GA, Bell County, KY, Breathitt County, KY, Clay County, KY, Estill County, KY, Floyd County, KY, Harlan County, KY, Jackson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Madison County, KY, Magoffin County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Graham County, NC, Swain County, NC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Pickett County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Washington County, TN, White County, TN, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA
The radar
The Knoxville radar (KMRX), 66 km from the middle of the area, began a volume at 20:19 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 nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 8.3 hours before the alert went out and 222 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
- 708 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
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 26, 8:24 PM EDT | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bibb, Butts, Carroll and 60 more | 66 min |
| Jun 27, 2:44 PM EDT | Mesoscale Discussion | SPC | Atkinson, Bacon, Baker, Baldwin, Ben Hill, Berrien and 79 more | 2 hr |
| Jun 27, 4:14 AM EDT | Mesoscale Discussion | SPC | Ballard, Breckinridge, Bullitt, Carroll, Crittenden, Daviess and 14 more | 91 min |
| Jun 27, 12:30 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Ballard, Barren, Boyle, Breckinridge and 49 more | 90 min |
| Jun 27, 1:01 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 54 more | 4 hr |
| Jun 27, 3:20 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 35 more | 55 min |
| Jun 27, 1:15 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 44 more | 60 min |
| Jun 27, 1:34 PM EDT | Severe Thunderstorm Watch | SPC | Anson, Beaufort, Bertie, Bladen, Brunswick, Camden and 47 more | 6 hr |
| Jun 27, 4:07 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Anson, Beaufort, Bertie, Bladen and 67 more | 83 min |
Nearby
Mesoscale Discussions in Tennessee, 2011Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Virginia, 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.