Alert archive / Arkansas / Mesoscale Discussions in 2004
Mesoscale Discussion 2438
The Storm Prediction Center issued this mesoscale discussion at Nov 23, 2004, 1:40 PM CST for 20 counties in Arkansas; Coahoma County, Mississippi. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Nov 23, 2004, 1:40 PM CST (19:40 UTC)
- Expired
- Nov 23, 2004, 3:15 PM CST
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 21 counties
Arkansas County, AR, Conway County, AR, Cross County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lee County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Perry County, AR, Phillips County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Coahoma County, MS
The radar
The Little Rock radar (KLZK), 35 km from the middle of the area, began a volume at 19:43 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
Shreveport, LA (KSHV), launched 12:00Z, 7.7 hours before the alert went out and 293 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
- 472 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
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 |
|---|---|---|---|---|
| Nov 23, 8:45 AM CST | Tornado Watch | SPC | Lafayette, Miller | 6 hr |
| Nov 23, 10:37 AM CST | Mesoscale Discussion | SPC | Lafayette, Miller | 113 min |
| Nov 23, 12:48 PM CST | Mesoscale Discussion | SPC | Lafayette, Miller | 117 min |
| Nov 23, 2:00 PM CST | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 25 more | 7 hr |
| Nov 23, 3:21 PM CST | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 25 more | 114 min |
| Nov 22, 6:03 PM CST | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 11 more | 2 hr |
| Nov 23, 11:10 AM CST | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Clarke, Copiah, Covington and 30 more | 3 hr |
Nearby
Mesoscale Discussions in Arkansas, 2004Mesoscale Discussions in Mississippi, 2004Every mesoscale discussion in 2004
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.