Alert archive / Michigan / Mesoscale Discussions in 2004
Mesoscale Discussion 1450
The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2004, 2:15 PM EDT for 13 counties in Michigan; Carlton County, Pine County, Minnesota; 9 counties in Wisconsin. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2004, 2:15 PM EDT (18:15 UTC)
- Expired
- Jun 30, 2004, 3:45 PM EDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 24 counties
Alger County, MI, Baraga County, MI, Chippewa County, MI, Dickinson County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Keweenaw County, MI, Luce County, MI, Mackinac County, MI, Marquette County, MI, Ontonagon County, MI, Schoolcraft County, MI, Carlton County, MN, Pine County, MN, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Florence County, WI, Iron County, WI, Sawyer County, WI, Vilas County, WI, Washburn County, WI
The radar
The Marquette radar (KMQT), 151 km from the middle of the area, began a volume at 18:19 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, 6.3 hours before the alert went out and 364 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
- 1785 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 15 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 30, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Charlevoix, Cheboygan, Chippewa, Delta and 12 more | 7 hr |
| Jun 30, 5:52 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Charlevoix, Cheboygan, Chippewa, Delta and 11 more | 83 min |
| Jun 30, 3:57 PM EDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 19 more | 2 hr |
Nearby
Mesoscale Discussions in Michigan, 2004Mesoscale Discussions in Wisconsin, 2004Mesoscale Discussions in Minnesota, 2004Every mesoscale discussion in 2004
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.