Alert archive / Tennessee / Mesoscale Discussions in 2003
Mesoscale Discussion 576
The Storm Prediction Center issued this mesoscale discussion at Apr 25, 2003, 11:04 AM CDT for 4 states. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2003, 11:04 AM CDT (16:04 UTC)
- Expired
- Apr 25, 2003, 1:00 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 38 counties
Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Marion County, AL, Winston County, AL, Caldwell County, KY, Calloway County, KY, Christian County, KY, Graves County, KY, Hopkins County, KY, Lyon County, KY, Marshall County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Alcorn County, MS, Itawamba County, MS, Lee County, MS, Prentiss County, MS, Tishomingo County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Decatur County, TN, Dickson County, TN, Hardin County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lewis County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Stewart County, TN, Wayne County, TN, Weakley County, TN
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, 4.1 hours before the alert went out and 132 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
- 3 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 296 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 25, 1:15 AM CDT | Mesoscale Discussion | SPC | Choctaw, Clarke, Greene, Hale, Marengo, Pickens and 2 more | 90 min |
| Apr 25, 3:05 AM CDT | Mesoscale Discussion | SPC | Baldwin, Bibb, Butler, Choctaw, Clarke, Conecuh and 17 more | 85 min |
| Apr 25, 5:40 AM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Covington, Dale, Escambia, Geneva and 2 more | 65 min |
| Apr 25, 6:05 AM CDT | Tornado Watch | SPC | Coffee, Covington, Geneva, Houston | 6 hr |
| Apr 25, 7:41 AM CDT | Mesoscale Discussion | SPC | Houston | 94 min |
| Apr 25, 12:45 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Bullock, Butler, Calhoun and 45 more | 5 hr |
| Apr 25, 12:59 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Chilton, Choctaw, Coosa and 15 more | 2 hr |
| Apr 25, 3:08 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 24 more | 2 hr |
| Apr 25, 5:16 PM CDT | Mesoscale Discussion | SPC | Autauga, Barbour, Bibb, Bullock, Butler, Chilton and 15 more | 59 min |
| Apr 25, 5:40 PM CDT | Tornado Watch | SPC | Barbour, Bullock, Butler, Choctaw, Clarke, Coffee and 10 more | 5 hr |
| Apr 25, 11:50 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Barren, Butler, Caldwell, Calloway and 16 more | 5 hr |
| Apr 25, 3:22 PM CDT | Mesoscale Discussion | SPC | Allen, Caldwell, Calloway, Christian, Livingston, Logan and 6 more | 113 min |
| Apr 25, 4:40 PM CDT | Tornado Watch | SPC | Adair, Allen, Barren, Breckinridge, Butler, Caldwell and 34 more | 4 hr |
| Apr 25, 6:29 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Breckinridge, Bullitt, Butler and 33 more | 91 min |
| Apr 24, 7:50 PM CDT | Tornado Watch | SPC | Adams, Attala, Carroll, Choctaw, Claiborne, Clarke and 35 more | 4 hr |
| Apr 24, 9:03 PM CDT | Mesoscale Discussion | SPC | Bolivar, Coahoma, DeSoto, Panola, Quitman, Tallahatchie and 1 more | 117 min |
| Apr 24, 10:51 PM CDT | Mesoscale Discussion | SPC | Adams, Attala, Carroll, Choctaw, Claiborne, Clarke and 35 more | 84 min |
| Apr 24, 11:45 PM CDT | Tornado Watch | SPC | Alcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 49 more | 5 hr |
| Apr 25, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | Amite, Covington, Forrest, Franklin, George, Greene and 13 more | 5 hr |
| Apr 25, 1:55 PM CDT | Mesoscale Discussion | SPC | Cheatham, Davidson, Dickson, Hickman, Houston, Lewis and 4 more | 2 hr |
| Apr 25, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Bedford, Bledsoe, Bradley, Cannon, Clay, Coffee and 28 more | 4 hr |
| Apr 25, 6:48 PM CDT | Mesoscale Discussion | SPC | Bledsoe, Bradley, Clay, Cumberland, DeKalb, Fentress and 13 more | 87 min |
Nearby
Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Alabama, 2003Every mesoscale discussion in 2003
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.