Alert archive / Tennessee / Mesoscale Discussions in 2020
Mesoscale Discussion 519
The Storm Prediction Center issued this mesoscale discussion at May 3, 2020, 3:08 PM CDT for 18 counties in Kentucky; 67 counties in Tennessee. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- May 3, 2020, 3:08 PM CDT (20:08 UTC)
- Expired
- May 3, 2020, 4:15 PM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 85 counties
Allen County, KY, Barren County, KY, Bell County, KY, Christian County, KY, Clinton County, KY, Cumberland County, KY, Knox County, KY, Logan County, KY, McCreary County, KY, Metcalfe County, KY, Monroe County, KY, Russell County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Chester County, TN, Claiborne County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Fayette County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grainger County, TN, Grundy County, TN, Hamilton County, TN, Hardeman County, TN, Hardin County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Knox County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Madison County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, McNairy County, TN, Meigs County, TN, Montgomery County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 44 km from the middle of the area, began a volume at 20:08 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, 8.1 hours before the alert went out and 35 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
- 1582 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 208 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 3, 11:44 AM CDT | Severe Thunderstorm Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 11 more | 7 hr |
| May 3, 12:50 PM CDT | Mesoscale Discussion | SPC | Ballard, Butler, Caldwell, Calloway, Carlisle, Christian and 13 more | 85 min |
| May 3, 5:35 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Bath, Bell, Bourbon and 63 more | 55 min |
| May 3, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | Bell, Breathitt, Casey, Clay, Clinton, Cumberland and 30 more | 3 hr |
| May 3, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | Bedford, Bledsoe, Cannon, Cheatham, Clay, Coffee and 34 more | 4 hr |
| May 3, 6:18 PM CDT | Mesoscale Discussion | SPC | Bedford, Benton, Bledsoe, Cannon, Carroll, Cheatham and 54 more | 57 min |
Nearby
Mesoscale Discussions in Tennessee, 2020Mesoscale Discussions in Kentucky, 2020Every mesoscale discussion in 2020
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.