Alert archive / Ohio / Mesoscale Discussions in 2004
Mesoscale Discussion 2031
The Storm Prediction Center issued this mesoscale discussion at Aug 17, 2004, 7:48 PM CDT for 5 states. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2004, 7:48 PM CDT (00:48 UTC)
- Expired
- Aug 17, 2004, 9:45 PM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 74 counties
Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Will County, IL, Allen County, IN, Benton County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Hillsdale County, MI, Jackson County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Ashland County, OH, Ashtabula County, OH, Crawford County, OH, Cuyahoga County, OH, Defiance County, OH, Erie County, OH, Fulton County, OH, Geauga County, OH, Hancock County, OH, Henry County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Medina County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH, Crawford County, PA, Erie County, PA, Mercer County, PA
The radar
The Northern Indiana radar (KIWX), 38 km from the middle of the area, began a volume at 00:49 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 nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 0.8 hours before the alert went out and 208 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
- 105 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1197 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 224 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Aug 18, 1:39 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 28 more | 96 min |
| Aug 18, 4:17 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Mercer, Rock Island, Warren | 118 min |
| Aug 18, 5:17 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Cass, Champaign, Christian and 48 more | 88 min |
| Aug 18, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 28 more | 5 hr |
| Aug 18, 12:27 PM CDT | Mesoscale Discussion | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 6 more | 63 min |
| Aug 18, 1:10 PM CDT | Severe Thunderstorm Watch | SPC | Alger, Baraga, Delta, Dickinson, Gogebic, Iron and 5 more | 7 hr |
| Aug 18, 3:03 PM CDT | Mesoscale Discussion | SPC | Monroe, Wayne | 57 min |
| Aug 18, 3:46 PM CDT | Mesoscale Discussion | SPC | Alger, Antrim, Benzie, Charlevoix, Cheboygan, Chippewa and 19 more | 59 min |
| Aug 18, 4:30 PM CDT | Severe Thunderstorm Watch | SPC | Alcona, Alpena, Antrim, Arenac, Benzie, Charlevoix and 23 more | 6 hr |
| Aug 18, 5:52 PM CDT | Mesoscale Discussion | SPC | Luce | 113 min |
| Aug 18, 6:41 PM CDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Arenac, Bay, Cheboygan and 23 more | 94 min |
| Aug 18, 5:01 PM CDT | Mesoscale Discussion | SPC | Adams, Ashland, Ashtabula, Athens, Carroll, Clinton and 40 more | 89 min |
| Aug 18, 12:24 PM CDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lancaster, Lehigh, Montgomery and 2 more | 96 min |
Nearby
Mesoscale Discussions in Ohio, 2004Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Michigan, 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.