Alert archive / Tennessee / Mesoscale Discussions in 2017
Mesoscale Discussion 349
The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2017, 5:59 PM CDT for Lauderdale County, Alabama; Allen County, Simpson County, Kentucky; 42 counties in Tennessee. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2017, 5:59 PM CDT (22:59 UTC)
- Expired
- Mar 27, 2017, 7:30 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 45 counties
Lauderdale County, AL, Allen County, KY, Simpson County, KY, Bedford County, TN, Benton County, TN, Cannon County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Hardin County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Moore County, TN, Overton County, TN, Perry County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale 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), 69 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 58 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
- 48 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 1296 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 173 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 |
|---|---|---|---|---|
| Mar 27, 1:49 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Cherokee, Chilton, Coosa and 19 more | 56 min |
| Mar 27, 1:54 PM CDT | Severe Thunderstorm Watch | SPC | Bibb, Blount, Calhoun, Cherokee, Cleburne, Colbert and 25 more | 7 hr |
| Mar 27, 3:33 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Cherokee, Chilton, Clay and 26 more | 87 min |
| Mar 27, 11:26 AM CDT | Mesoscale Discussion | SPC | Allen, Ballard, Barren, Butler, Caldwell, Calloway and 18 more | 3 hr |
| Mar 27, 12:08 PM CDT | Severe Thunderstorm Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 13 more | 8 hr |
| Mar 27, 1:58 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Breckinridge, Bullitt, Butler and 30 more | 2 hr |
| Mar 27, 2:24 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Barren, Bourbon, Boyle and 46 more | 8 hr |
| Mar 27, 3:39 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 13 more | 2 hr |
| Mar 27, 4:43 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 71 more | 92 min |
| Mar 27, 5:02 PM CDT | Severe Thunderstorm Watch | SPC | Bath, Bell, Breathitt, Clay, Elliott, Estill and 25 more | 5 hr |
Nearby
Mesoscale Discussions in Tennessee, 2017Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Alabama, 2017Every mesoscale discussion in 2017
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.