Alert archive / Alabama / Mesoscale Discussions in 2024
Mesoscale Discussion 930
The Storm Prediction Center issued this mesoscale discussion at May 24, 2024, 12:17 PM CDT for 27 counties in Alabama; 18 counties in Mississippi. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2024, 12:17 PM CDT (17:17 UTC)
- Expired
- May 24, 2024, 1:45 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 45 counties
Bibb County, AL, Blount County, AL, Calhoun County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Cullman County, AL, Elmore County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Marion County, AL, Marshall County, AL, Perry County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Itawamba County, MS, Lee County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Quitman County, MS, Tallahatchie County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 51 km from the middle of the area, began a volume at 17:19 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
Jackson, MS (KJAN), launched 12:00Z, 5.3 hours before the alert went out and 245 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
- 1606 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 647 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- -42 m²/s²
- Significant tornado parameter
- -0.4
- Supercell composite
- -2.0
The text
As transmitted.
<!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 |
|---|---|---|---|---|
| May 24, 3:58 PM CDT | Mesoscale Discussion | SPC | Bibb, Fayette, Jefferson, Lamar, Marion, Pickens and 3 more | 92 min |
| May 24, 6:17 PM CDT | Severe Thunderstorm Watch | SPC | Bolivar, Calhoun, Carroll, Choctaw, Coahoma, Grenada and 9 more | 5 hr |
Nearby
Mesoscale Discussions in Alabama, 2024Mesoscale Discussions in Mississippi, 2024Every mesoscale discussion in 2024
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.