Alert archive / Tennessee / Mesoscale Discussions in 2005
Mesoscale Discussion 656
The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2005, 2:49 PM CDT for 8 counties in Alabama; 6 counties in Mississippi; 33 counties in Tennessee. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2005, 2:49 PM CDT (19:49 UTC)
- Expired
- Apr 22, 2005, 4:15 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 47 counties
Colbert County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Alcorn County, MS, Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Prentiss County, MS, Tishomingo County, MS, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham 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, Marshall County, TN, Maury County, TN, Montgomery County, TN, Moore County, TN, Perry County, TN, Rutherford County, TN, Smith County, TN, Trousdale County, TN, Warren County, TN, Wayne County, TN, Williamson County, TN, Wilson County, TN
The radar
The Columbus AFB radar (KGWX), 154 km from the middle of the area, began a volume at 19:53 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, 7.8 hours before the alert went out and 149 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
- 280 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1102 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 9:23 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Chilton, Colbert, Cullman, Fayette and 15 more | 97 min |
| Apr 22, 5:36 AM CDT | Mesoscale Discussion | SPC | Colbert, Cullman, Franklin, Jackson, Lauderdale, Lawrence and 5 more | 84 min |
| Apr 22, 9:15 AM CDT | Mesoscale Discussion | SPC | Bibb, Chilton, Fayette, Greene, Hale, Jefferson and 4 more | 90 min |
| Apr 22, 9:50 AM CDT | Severe Thunderstorm Watch | SPC | Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 24 more | 5 hr |
| Apr 22, 12:41 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Chambers, Chilton, Clay, Coosa and 12 more | 64 min |
| Apr 22, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bibb, Blount, Bullock, Butler and 38 more | 6 hr |
| Apr 22, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Colbert, DeKalb, Jackson, Lauderdale, Lawrence, Limestone and 2 more | 5 hr |
| Apr 22, 5:40 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Cherokee, Cleburne, DeKalb, Etowah, Jackson | 5 hr |
| Apr 22, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Barbour, Coffee, Dale, Geneva, Henry, Houston and 1 more | 6 hr |
| Apr 22, 6:40 PM CDT | Mesoscale Discussion | SPC | Jackson, Madison | 95 min |
| Apr 22, 11:06 AM CDT | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 8 more | 114 min |
| Apr 22, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Amite, Claiborne, Copiah, Covington, Franklin and 13 more | 8 hr |
| Apr 22, 2:25 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Covington, Franklin and 13 more | 95 min |
| Apr 22, 6:40 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Amite, Covington, Forrest, Franklin, Jefferson Davis and 10 more | 7 hr |
| Apr 21, 8:19 PM CDT | Mesoscale Discussion | SPC | Dyer, Lake, Obion | 86 min |
| Apr 22, 3:09 AM CDT | Mesoscale Discussion | SPC | Dyer, Lake, Obion | 66 min |
| Apr 22, 11:18 AM CDT | Mesoscale Discussion | SPC | Blount, Sevier | 117 min |
| Apr 22, 5:17 PM CDT | Mesoscale Discussion | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 23 more | 58 min |
Nearby
Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Alabama, 2005Mesoscale Discussions in Mississippi, 2005Every mesoscale discussion in 2005
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.