Alert archive / South Dakota / Mesoscale Discussions in 2003
Mesoscale Discussion 2131
The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2003, 11:02 AM CDT for 8 counties in North Dakota; 10 counties in South Dakota. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2003, 11:02 AM CDT (16:02 UTC)
- Expired
- Aug 9, 2003, 1:00 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
Counties Barnes County, ND, Dickey County, ND, Emmons County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Stutsman County, ND, Brown County, SD, Campbell County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, McPherson County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 111 km from the middle of the area, began a volume at 16:04 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 4.0 hours before the alert went out and 119 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
- 1113 J/kg
- Mixed-layer CIN
- -157 J/kg
- Mixed-layer LCL
- 842 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 |
|---|---|---|---|---|
| Aug 8, 7:03 PM CDT | Mesoscale Discussion | SPC | Billings, Bottineau, Burke, Burleigh, Divide, Dunn and 17 more | 87 min |
| Aug 8, 10:20 PM CDT | Mesoscale Discussion | SPC | Billings, Bottineau, Burke, Burleigh, Divide, Dunn and 18 more | 55 min |
| Aug 9, 1:19 PM CDT | Mesoscale Discussion | SPC | Burke, Divide, Dunn, McKenzie, Mountrail, Williams | 116 min |
| Aug 9, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bennett, Brookings, Brown, Brule and 29 more | 5 hr |
| Aug 9, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Tripp | 5 hr |
| Aug 9, 3:38 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bennett, Brookings, Brown, Brule and 28 more | 2 hr |
| Aug 9, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 15 more | 6 hr |
Nearby
Mesoscale Discussions in South Dakota, 2003Mesoscale Discussions in North Dakota, 2003Every mesoscale discussion in 2003
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.