Alert archive / Kentucky / Mesoscale Discussions in 2022
Mesoscale Discussion 2
The Storm Prediction Center issued this mesoscale discussion at Dec 31, 2021, 9:31 PM CST for 73 counties in Kentucky; 27 counties in Tennessee. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 31, 2021, 9:31 PM CST (03:31 UTC)
- Expired
- Jan 1, 2022, 12:00 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 100 counties
Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Calloway County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Fulton County, KY, Garrard County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Hickman County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Marshall County, KY, McCreary County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Woodford County, KY, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Henry County, TN, Houston County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Obion County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Weakley County, TN, White County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 71 km from the middle of the area, began a volume at 03:30 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 00:00Z, 3.5 hours before the alert went out and 84 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
- 336 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.3
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 |
|---|---|---|---|---|
| Dec 31, 11:57 PM CST | Tornado Watch | SPC | Adair, Allen, Barren, Butler, Calloway, Carlisle and 33 more | 7 hr |
| Jan 1, 2:07 AM CST | Mesoscale Discussion | SPC | Allen, Barren, Butler, Calloway, Christian, Cumberland and 9 more | 113 min |
| Jan 1, 10:29 AM CST | Mesoscale Discussion | SPC | Adair, Allen, Barren, Butler, Casey, Edmonson and 10 more | 61 min |
| Jan 1, 10:50 AM CST | Tornado Watch | SPC | Adair, Allen, Barren, Boyle, Casey, Clinton and 14 more | 7 hr |
| Jan 1, 12:38 PM CST | Mesoscale Discussion | SPC | Adair, Casey, Clay, Clinton, Cumberland, Estill and 17 more | 97 min |
| Jan 1, 12:56 PM CST | Tornado Watch | SPC | Bell, Breathitt, Clay, Harlan, Jackson, Knott and 12 more | 6 hr |
| Jan 1, 1:57 PM CST | Mesoscale Discussion | SPC | Bedford, Giles, Hardin, Lawrence, Lincoln, Marshall and 2 more | 93 min |
| Jan 1, 3:27 PM CST | Mesoscale Discussion | SPC | Anderson, Bledsoe, Campbell, Coffee, Cumberland, Franklin and 14 more | 93 min |
| Jan 1, 5:53 PM CST | Mesoscale Discussion | SPC | Anderson, Bledsoe, Blount, Bradley, Cumberland, Franklin and 19 more | 67 min |
Nearby
Mesoscale Discussions in Kentucky, 2022Mesoscale Discussions in Tennessee, 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.