Alert archive / Minnesota / Mesoscale Discussions in 2007
Mesoscale Discussion 1995
The Storm Prediction Center issued this mesoscale discussion at Sep 21, 2007, 3:08 AM CDT for 8 counties in Minnesota; 8 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2007, 3:08 AM CDT (08:08 UTC)
- Expired
- Sep 21, 2007, 5:15 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
Counties Aitkin County, MN, Carlton County, MN, Cook County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Pine County, MN, Saint Louis County, MN, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Iron County, WI, Price County, WI, Sawyer County, WI, Washburn County, WI
The radar
The Duluth radar (KDLH), 71 km from the middle of the area, began a volume at 08:08 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
International Fa, MN (KINL), launched 00:00Z, 8.1 hours before the alert went out and 174 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
- 757 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 555 m²/s²
- 0-3 km storm-relative helicity
- 616 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 |
|---|---|---|---|---|
| Sep 20, 8:40 PM CDT | Mesoscale Discussion | SPC | Murray, Nobles, Pipestone, Rock | 95 min |
| Sep 20, 11:13 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 4 more | 7 hr |
| Sep 21, 12:00 AM CDT | Tornado Watch | SPC | Becker, Beltrami, Benton, Big Stone, Chippewa, Clay and 28 more | 6 hr |
| Sep 21, 3:29 AM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Benton, Big Stone, Chippewa, Clay and 27 more | 2 hr |
| Sep 21, 6:04 AM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Carlton, Carver, Cass and 24 more | 5 hr |
| Sep 21, 1:34 PM CDT | Mesoscale Discussion | SPC | Chisago, Cook, Dakota, Dodge, Fillmore, Freeborn and 10 more | 116 min |
| Sep 21, 3:17 PM CDT | Mesoscale Discussion | SPC | Houston | 88 min |
| Sep 21, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | Houston | 4 hr |
| Sep 20, 11:09 PM CDT | Mesoscale Discussion | SPC | Barron, Burnett, Chippewa, Clark, Dunn, Eau Claire and 9 more | 81 min |
| Sep 21, 10:24 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calumet, Clark, Columbia, Dodge and 27 more | 66 min |
| Sep 21, 2:46 PM CDT | Tornado Watch | SPC | Adams, Ashland, Bayfield, Chippewa, Clark, Eau Claire and 25 more | 8 hr |
| Sep 21, 6:17 PM CDT | Mesoscale Discussion | SPC | Columbia, Dane, Dodge, Grant, Green, Iowa and 7 more | 88 min |
| Sep 21, 6:49 PM CDT | Mesoscale Discussion | SPC | Brown, Door, Kewaunee, Manitowoc, Sheboygan | 86 min |
Nearby
Mesoscale Discussions in Minnesota, 2007Mesoscale Discussions in Wisconsin, 2007Every mesoscale discussion in 2007
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.