Alert archive / Arkansas / Mesoscale Discussions in 2025
Mesoscale Discussion 409
The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2025, 9:31 AM CDT for 4 states. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2025, 9:31 AM CDT (14:31 UTC)
- Expired
- Apr 5, 2025, 11:30 AM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 80%
All 52 counties
Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Jefferson County, AR, Lafayette County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Miller County, AR, Mississippi County, AR, Monroe County, AR, Nevada County, AR, Ouachita County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, Union County, AR, Woodruff County, AR, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, Webster Parish, LA, Bolivar County, MS, Coahoma County, MS, DeSoto County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Fayette County, TN, Haywood County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN
The radar
The Little Rock radar (KLZK), 88 km from the middle of the area, began a volume at 14:32 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
Little Rock, AR (KLZK), launched 12:00Z, 2.5 hours before the alert went out and 215 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
- 26 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 816 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
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 |
|---|---|---|---|---|
| Apr 4, 8:04 PM CDT | Mesoscale Discussion | SPC | Clark, Cleburne, Cleveland, Columbia, Conway, Craighead and 28 more | 86 min |
| Apr 4, 8:50 PM CDT | Tornado Watch | SPC | Calhoun, Clark, Clay, Cleburne, Cleveland, Columbia and 29 more | 9 hr |
| Apr 4, 11:16 PM CDT | Mesoscale Discussion | SPC | Calhoun, Clark, Clay, Cleveland, Columbia, Craighead and 23 more | 119 min |
| Apr 5, 2:11 AM CDT | Mesoscale Discussion | SPC | Mississippi | 2 hr |
| Apr 5, 4:23 AM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Logan, Scott, Sebastian and 1 more | 2 hr |
| Apr 5, 9:56 AM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 31 more | 9 hr |
| Apr 5, 11:36 AM CDT | Mesoscale Discussion | SPC | Crittenden, Cross, Lee, Lonoke, Monroe, Prairie and 3 more | 114 min |
| Apr 5, 12:48 PM CDT | Mesoscale Discussion | SPC | Hempstead, Howard, Little River, Pike, Polk, Sevier | 117 min |
| Apr 5, 3:14 PM CDT | Mesoscale Discussion | SPC | Chicot, Desha, Phillips | 2 hr |
| Apr 5, 4:50 PM CDT | Tornado Watch | SPC | Ashley, Chicot | 7 hr |
| Apr 5, 10:06 AM CDT | Mesoscale Discussion | SPC | Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis, Vernon | 2 hr |
| Apr 5, 12:36 PM CDT | Tornado Watch | SPC | Beauregard, Vernon | 8 hr |
| Apr 5, 2:37 PM CDT | Mesoscale Discussion | SPC | Beauregard, Sabine, Vernon | 83 min |
| Apr 5, 6:39 PM CDT | Tornado Watch | SPC | Avoyelles, Beauregard, Caldwell, Grant, Jackson, LaSalle and 6 more | 5 hr |
| Apr 5, 2:34 PM CDT | Mesoscale Discussion | SPC | Alcorn, Benton | 116 min |
| Apr 5, 6:18 PM CDT | Mesoscale Discussion | SPC | Alcorn, Calhoun, Carroll, Chickasaw, Choctaw, Clay and 12 more | 87 min |
| Apr 5, 1:03 PM CDT | Mesoscale Discussion | SPC | Henry, Lake, Montgomery, Obion, Stewart, Weakley | 87 min |
| Apr 5, 1:43 PM CDT | Tornado Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 30 more | 7 hr |
| Apr 5, 5:42 PM CDT | Mesoscale Discussion | SPC | Campbell, Claiborne, Clay, Fentress, Grainger, Hancock and 7 more | 63 min |
Nearby
Mesoscale Discussions in Arkansas, 2025Mesoscale Discussions in Mississippi, 2025Mesoscale Discussions in Tennessee, 2025Every mesoscale discussion in 2025
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.