Alert archive / North Dakota / Mesoscale Discussions in 2012
Mesoscale Discussion 1157
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2012, 8:34 PM MDT for 16 counties in North Dakota; 9 counties in South Dakota. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2012, 8:34 PM MDT (02:34 UTC)
- Expired
- Jun 13, 2012, 10:00 PM MDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 25 counties
Adams County, ND, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Morton County, ND, Ransom County, ND, Sargent County, ND, Sioux County, ND, Stutsman County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Perkins County, SD, Walworth County, SD
The radar
The Bismarck radar (KBIS), 94 km from the middle of the area, began a volume at 02:34 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.6 hours before the alert went out and 94 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
- 220 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 1942 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Jun 13, 9:53 PM MDT | Severe Thunderstorm Watch | SPC | Barnes, Burleigh, Cass, Dickey, Emmons, Foster and 13 more | 5 hr |
| Jun 14, 2:01 AM MDT | Mesoscale Discussion | SPC | Dickey, Richland, Sargent | 89 min |
| Jun 14, 12:44 PM MDT | Mesoscale Discussion | SPC | Lincoln | 2 hr |
Nearby
Mesoscale Discussions in North Dakota, 2012Mesoscale Discussions in South Dakota, 2012Every mesoscale discussion in 2012
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.