Alert archive / Tennessee / Mesoscale Discussions in 2025
Mesoscale Discussion 72
The Storm Prediction Center issued this mesoscale discussion at Feb 6, 2025, 7:41 PM EST for 11 counties in Kentucky; 24 counties in Tennessee; 5 counties in Virginia. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Feb 6, 2025, 7:41 PM EST (00:41 UTC)
- Expired
- Feb 6, 2025, 9:15 PM EST
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 4
All 40 counties
Bell County, KY, Clay County, KY, Harlan County, KY, Knox County, KY, Laurel County, KY, Leslie County, KY, Letcher County, KY, McCreary County, KY, Perry County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Blount County, TN, Campbell County, TN, Claiborne County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Roane County, TN, Scott County, TN, Sevier County, TN, Sullivan County, TN, Union County, TN, Washington County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Scott County, VA, Wise County, VA
The radar
The Knoxville radar (KMRX), 47 km from the middle of the area, began a volume at 00:45 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 00:00Z, 0.7 hours before the alert went out and 268 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
- 335 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 248 m²/s²
- 0-3 km storm-relative helicity
- 294 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.6
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 |
|---|---|---|---|---|
| Feb 6, 7:27 PM EST | Severe Thunderstorm Watch | SPC | Bell, Clay, Harlan, Knox, Leslie, Letcher and 4 more | 4 hr |
| Feb 6, 9:28 PM EST | Mesoscale Discussion | SPC | Anderson, Claiborne, Cocke, Grainger, Greene, Hamblen and 6 more | 62 min |
Nearby
Mesoscale Discussions in Tennessee, 2025Mesoscale Discussions in Kentucky, 2025Mesoscale Discussions in Virginia, 2025Every mesoscale discussion in 2025
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.