Alert archive / North Dakota / Mesoscale Discussions in 2015
Mesoscale Discussion 1107
The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2015, 4:24 PM MDT for 7 counties in Montana; 32 counties in North Dakota; 8 counties in South Dakota. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2015, 4:24 PM MDT (22:24 UTC)
- Expired
- Jun 21, 2015, 5:30 PM MDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 47 counties
Carter County, MT, Dawson County, MT, Fallon County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Wibaux County, MT, Adams County, ND, Benson County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Burleigh County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Towner County, ND, Ward County, ND, Wells County, ND, Williams County, ND, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Harding County, SD, Meade County, SD, Perkins County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 111 km from the middle of the area, began a volume at 22:24 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, 10.4 hours before the alert went out and 115 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2128 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 21, 1:28 PM MDT | Mesoscale Discussion | SPC | Custer, Daniels, Dawson, Fallon, Garfield, McCone and 10 more | 2 hr |
| Jun 21, 2:23 PM MDT | Tornado Watch | SPC | Carter, Custer, Daniels, Dawson, Fallon, McCone and 6 more | 8 hr |
| Jun 20, 7:47 PM MDT | Mesoscale Discussion | SPC | Bennett, Oglala Lakota | 58 min |
| Jun 21, 12:05 AM MDT | Mesoscale Discussion | SPC | Bennett, Custer, Fall River, Jackson, Lawrence, Mellette and 3 more | 85 min |
| Jun 21, 4:57 PM MDT | Tornado Watch | SPC | Butte, Harding, Lawrence, Meade, Perkins, Ziebach | 5 hr |
Nearby
Mesoscale Discussions in North Dakota, 2015Mesoscale Discussions in South Dakota, 2015Mesoscale Discussions in Montana, 2015Every mesoscale discussion in 2015
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.