Alert archive / Minnesota / Mesoscale Discussions in 2017
Mesoscale Discussion 1242
The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2017, 12:51 AM CDT for 34 counties in Minnesota; 4 counties in North Dakota; Burnett County, Douglas County, Wisconsin. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Jul 6, 2017, 12:51 AM CDT (05:51 UTC)
- Expired
- Jul 6, 2017, 2:45 AM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 40 counties
Aitkin County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Clay County, MN, Clearwater County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, Mahnomen County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Pine County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Richland County, ND, Steele County, ND, Traill County, ND, Burnett County, WI, Douglas County, WI
The radar
The Duluth radar (KDLH), 189 km from the middle of the area, began a volume at 05:55 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
Minneapolis, MN (KMPX), launched 00:00Z, 5.9 hours before the alert went out and 199 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
- 2692 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1493 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.7
The text
As transmitted.
<!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 |
|---|---|---|---|---|
| Jul 5, 9:51 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Mahnomen, Marshall, Norman and 4 more | 114 min |
| Jul 5, 10:12 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Clearwater, Grant, Hubbard, Kittson and 10 more | 6 hr |
| Jul 6, 3:26 AM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Carlton, Cass, Chisago and 13 more | 8 hr |
| Jul 6, 5:43 AM CDT | Mesoscale Discussion | SPC | Carlton, Pine | 2 hr |
| Jul 6, 2:00 PM CDT | Mesoscale Discussion | SPC | Cook, Lake | 60 min |
| Jul 6, 5:04 PM CDT | Mesoscale Discussion | SPC | Brown, Calumet, Florence, Forest, Green Lake, Iron and 20 more | 116 min |
| Jul 6, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | Ashland, Bayfield, Brown, Calumet, Door, Florence and 21 more | 6 hr |
Nearby
Mesoscale Discussions in Minnesota, 2017Mesoscale Discussions in North Dakota, 2017Mesoscale Discussions in Wisconsin, 2017Every mesoscale discussion in 2017
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.