Alert archive / Iowa / Mesoscale Discussions in 2006
Mesoscale Discussion 1968
The Storm Prediction Center issued this mesoscale discussion at Sep 15, 2006, 8:32 PM CDT for 27 counties in Iowa; 10 counties in Minnesota; 4 counties in South Dakota. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Sep 15, 2006, 8:32 PM CDT (01:32 UTC)
- Expired
- Sep 15, 2006, 9:30 PM CDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 41 counties
Adair County, IA, Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Ida County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Yellow Medicine County, MN, Brookings County, SD, Lincoln County, SD, Minnehaha County, SD, Moody County, SD
The radar
The Sioux Falls radar (KFSD), 130 km from the middle of the area, began a volume at 01:34 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
Omaha, NE (KOAX), launched 00:00Z, 1.5 hours before the alert went out and 163 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
- 262 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1732 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.1
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 |
|---|---|---|---|---|
| Sep 15, 8:50 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Fremont, Harrison, Mills, Monona, Montgomery and 2 more | 4 hr |
| Sep 16, 1:25 PM CDT | Mesoscale Discussion | SPC | Cherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more | 3 hr |
| Sep 16, 1:53 PM CDT | Tornado Watch | SPC | Lyon, Monona, Plymouth, Sioux, Woodbury | 8 hr |
| Sep 16, 3:24 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 7 more | 96 min |
| Sep 16, 3:56 PM CDT | Tornado Watch | SPC | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 7 hr |
| Sep 16, 5:07 PM CDT | Tornado Watch | SPC | Buena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 15 more | 8 hr |
| Sep 16, 6:12 PM CDT | Mesoscale Discussion | SPC | Lyon | 63 min |
| Sep 16, 5:29 PM CDT | Tornado Watch | SPC | Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 17 more | 8 hr |
Nearby
Mesoscale Discussions in Iowa, 2006Mesoscale Discussions in Minnesota, 2006Mesoscale Discussions in South Dakota, 2006Every mesoscale discussion in 2006
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.