Alert archive / Alabama / Mesoscale Discussions in 2014
Mesoscale Discussion 1883
The Storm Prediction Center issued this mesoscale discussion at Oct 13, 2014, 7:33 PM CDT for 15 counties in Alabama; 9 counties in Tennessee. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2014, 7:33 PM CDT (00:33 UTC)
- Expired
- Oct 13, 2014, 8:30 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 24 counties
Blount County, AL, Cullman County, AL, Fayette County, AL, Jackson County, AL, Jefferson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Shelby County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Bedford County, TN, Coffee County, TN, Franklin County, TN, Giles County, TN, Lawrence County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN
The radar
The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 00:36 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
Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 145 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
- 880 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 338 m²/s²
- 0-3 km storm-relative helicity
- 406 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 13.0
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 |
|---|---|---|---|---|
| Oct 13, 7:23 PM CDT | Tornado Watch | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more | 7 hr |
| Oct 13, 8:57 PM CDT | Mesoscale Discussion | SPC | Barbour, Bullock, Calhoun, Chambers, Cherokee, Clay and 11 more | 2 hr |
| Oct 13, 10:44 PM CDT | Tornado Watch | SPC | Barbour, Bullock, Chambers, Coffee, Coosa, Dale and 10 more | 6 hr |
| Oct 13, 11:52 PM CDT | Mesoscale Discussion | SPC | Autauga, Butler, Coffee, Coosa, Covington, Crenshaw and 5 more | 53 min |
| Oct 14, 2:07 AM CDT | Mesoscale Discussion | SPC | Barbour, Chambers, Dale, Henry, Houston, Lee and 2 more | 83 min |
| Oct 14, 3:27 AM CDT | Tornado Watch | SPC | Houston | 8 hr |
| Oct 14, 6:23 AM CDT | Mesoscale Discussion | SPC | Jackson | 2 hr |
| Oct 13, 10:41 PM CDT | Mesoscale Discussion | SPC | Anderson, Bledsoe, Campbell, Cumberland, Fentress, Knox and 9 more | 64 min |
Nearby
Mesoscale Discussions in Alabama, 2014Mesoscale Discussions in Tennessee, 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.