Alert archive / Kentucky / Mesoscale Discussions in 2014
Mesoscale Discussion 657
The Storm Prediction Center issued this mesoscale discussion at May 22, 2014, 2:09 PM CDT for 49 counties in Kentucky; 42 counties in Tennessee; Lee County, Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2014, 2:09 PM CDT (19:09 UTC)
- Expired
- May 22, 2014, 4:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 92 counties
Adair County, KY, Allen County, KY, Barren County, KY, Bell County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Casey County, KY, Christian County, KY, Clay County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Edmonson County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Harlan County, KY, Hart County, KY, Hopkins County, KY, Jackson County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Leslie County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McCreary County, KY, McLean County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Ohio County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Claiborne County, TN, Clay County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Grainger County, TN, Hamblen County, TN, Hancock County, TN, Houston County, TN, Jackson County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, Montgomery County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN, Lee County, VA
The radar
The Nashville radar (KOHX), 78 km from the middle of the area, began a volume at 19:11 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, 7.2 hours before the alert went out and 90 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
- 650 J/kg
- Mixed-layer CIN
- -141 J/kg
- Mixed-layer LCL
- 820 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 |
|---|---|---|---|---|
| May 21, 8:27 PM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Bell, Boyle, Breathitt and 60 more | 93 min |
| May 21, 11:39 PM CDT | Mesoscale Discussion | SPC | Anderson, Bourbon, Boyle, Bullitt, Carroll, Clark and 31 more | 96 min |
| May 22, 2:53 AM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Boyle, Breckinridge, Bullitt, Casey and 35 more | 97 min |
| May 22, 2:33 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Ballard, Barren, Butler, Caldwell and 26 more | 5 hr |
| May 22, 6:47 PM CDT | Mesoscale Discussion | SPC | Calloway, Carlisle, Christian, Graves, Logan, Lyon and 4 more | 88 min |
| May 22, 12:19 PM CDT | Mesoscale Discussion | SPC | Accomack, Amelia, Arlington, Caroline, Charles City, Chesterfield and 44 more | 116 min |
| May 22, 1:18 PM CDT | Severe Thunderstorm Watch | SPC | Accomack, Arlington, Caroline, Charles City, Clarke, Culpeper and 56 more | 8 hr |
| May 22, 5:36 PM CDT | Mesoscale Discussion | SPC | Accomack, Caroline, Charles City, Essex, Gloucester, Hanover and 33 more | 84 min |
Nearby
Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Tennessee, 2014Mesoscale Discussions in Virginia, 2014Every mesoscale discussion in 2014
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.