Alert archive / Tennessee / Mesoscale Discussions in 2017
Mesoscale Discussion 828
The Storm Prediction Center issued this mesoscale discussion at May 24, 2017, 11:47 AM CDT for 17 counties in Kentucky; 35 counties in Tennessee. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2017, 11:47 AM CDT (16:47 UTC)
- Expired
- May 24, 2017, 12:45 PM CDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 52 counties
Adair County, KY, Allen County, KY, Barren County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Green County, KY, Lincoln County, KY, Marion County, KY, McCreary County, KY, Metcalfe County, KY, Monroe County, KY, Pulaski County, KY, Russell County, KY, Taylor 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, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grundy County, TN, Hamilton County, TN, Jackson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, Marion 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, Scott County, TN, Sequatchie County, TN, Smith County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 125 km from the middle of the area, began a volume at 16:51 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, 4.8 hours before the alert went out and 131 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
- 13 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 805 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 6:41 AM CDT | Mesoscale Discussion | SPC | Bell, Clay, Harlan, Jackson, Knox, Laurel and 7 more | 3 hr |
| May 24, 10:47 AM CDT | Mesoscale Discussion | SPC | Boone, Campbell, Kenton | 58 min |
| May 24, 12:19 PM CDT | Tornado Watch | SPC | Adair, Anderson, Bath, Bell, Bourbon, Boyle and 51 more | 7 hr |
| May 24, 2:50 PM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Bath, Bell, Bourbon, Boyle and 53 more | 55 min |
| May 24, 5:51 PM CDT | Mesoscale Discussion | SPC | Carter, Elliott, Floyd, Johnson, Knott, Lawrence and 6 more | 24 min |
| May 24, 9:04 AM CDT | Tornado Watch | SPC | Polk | 11 hr |
Nearby
Mesoscale Discussions in Tennessee, 2017Mesoscale Discussions in Kentucky, 2017Every mesoscale discussion in 2017
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.