Alert archive / Tennessee / Mesoscale Discussions in 2022
Mesoscale Discussion 149
The Storm Prediction Center issued this mesoscale discussion at Feb 17, 2022, 5:32 PM CST for 12 counties in Kentucky; 19 counties in Tennessee. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Feb 17, 2022, 5:32 PM CST (23:32 UTC)
- Expired
- Feb 17, 2022, 7:00 PM CST
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 31 counties
Adair County, KY, Boyle County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Garrard County, KY, Jessamine County, KY, Lincoln County, KY, Mercer County, KY, Pulaski County, KY, Russell County, KY, Wayne County, KY, Bedford County, TN, Bledsoe 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, Overton County, TN, Pickett County, TN, Putnam County, TN, Sequatchie County, TN, Smith County, TN, Van Buren County, TN, Warren County, TN, White County, TN
The radar
The Nashville radar (KOHX), 97 km from the middle of the area, began a volume at 23:35 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, 11.5 hours before the alert went out and 103 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1210 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 499 m²/s²
- 0-3 km storm-relative helicity
- 576 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 |
|---|---|---|---|---|
| Feb 17, 1:11 PM CST | Mesoscale Discussion | SPC | Allen, Barren, Calloway, Christian, Edmonson, Hart and 6 more | 2 hr |
| Feb 17, 10:05 AM CST | Mesoscale Discussion | SPC | Chester, Fayette, Hardeman, McNairy, Shelby | 2 hr |
| Feb 17, 10:49 AM CST | Tornado Watch | SPC | Crockett, Fayette, Hardeman, Haywood, Lauderdale, Madison and 2 more | 7 hr |
| Feb 17, 1:46 PM CST | Tornado Watch | SPC | Chester, Decatur, Giles, Hardin, Henderson, Hickman and 8 more | 6 hr |
Nearby
Mesoscale Discussions in Tennessee, 2022Mesoscale Discussions in Kentucky, 2022Every mesoscale discussion in 2022
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.