Alert archive / Minnesota / Mesoscale Discussions in 2020
Mesoscale Discussion 1252
The Storm Prediction Center issued this mesoscale discussion at Jul 17, 2020, 5:09 PM CDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 17, 2020, 5:09 PM CDT (22:09 UTC)
- Expired
- Jul 17, 2020, 7:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 95%
All 56 counties
Aitkin County, MN, Anoka County, MN, Becker County, MN, Beltrami County, MN, Benton County, MN, Big Stone County, MN, Carlton County, MN, Cass County, MN, Chippewa 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, Lac qui Parle County, MN, Mahnomen County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Norman County, MN, Otter Tail County, MN, Pennington 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, Wright County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Marshall County, SD, Roberts County, SD, Burnett County, WI
The radar
The Fargo/Grand Forks radar (KMVX), 180 km from the middle of the area, began a volume at 22:13 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 12:00Z, 10.2 hours before the alert went out and 239 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
- 1028 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 17, 9:55 AM CDT | Mesoscale Discussion | SPC | Murray, Nobles, Pipestone, Rock | 95 min |
| Jul 17, 12:30 PM CDT | Severe Thunderstorm Watch | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 10 hr |
| Jul 17, 5:39 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Becker, Beltrami, Benton, Big Stone, Carlton and 29 more | 8 hr |
| Jul 17, 6:04 PM CDT | Mesoscale Discussion | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 116 min |
| Jul 17, 12:10 PM CDT | Mesoscale Discussion | SPC | Bottineau, Burleigh, Dunn, Grant, Hettinger, McHenry and 14 more | 95 min |
| Jul 17, 2:25 PM CDT | Mesoscale Discussion | SPC | Benson, Cavalier, Eddy, McHenry, McLean, Nelson and 7 more | 95 min |
| Jul 17, 3:47 PM CDT | Mesoscale Discussion | SPC | Grant, Hettinger, McLean, Mercer, Morton, Oliver | 88 min |
Nearby
Mesoscale Discussions in Minnesota, 2020Mesoscale Discussions in North Dakota, 2020Mesoscale Discussions in South Dakota, 2020Every mesoscale discussion in 2020
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.