Alert archive / Missouri / Mesoscale Discussions in 2004
Mesoscale Discussion 1872
The Storm Prediction Center issued this mesoscale discussion at Aug 3, 2004, 10:38 PM CDT for 9 counties in Illinois; Johnson County, Leavenworth County, Wyandotte County, Kansas; 34 counties in Missouri. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2004, 10:38 PM CDT (03:38 UTC)
- Expired
- Aug 3, 2004, 11:45 PM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 46 counties
Adams County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Greene County, IL, Jersey County, IL, Morgan County, IL, Pike County, IL, Scott County, IL, Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS, Audrain County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Pettis County, MO, Pike County, MO, Platte County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saline County, MO, Shelby County, MO, Warren County, MO
The radar
The Pleasant Hill radar (KEAX), 132 km from the middle of the area, began a volume at 03:41 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
Topeka, KS (KTOP), launched 00:00Z, 3.6 hours before the alert went out and 247 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
- 4543 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1505 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 14.3
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 3, 7:38 PM CDT | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Ford, Grundy and 14 more | 67 min |
| Aug 3, 7:55 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 21 more | 5 hr |
| Aug 3, 8:19 PM CDT | Mesoscale Discussion | SPC | Carroll, Henry, Jo Daviess, Knox, Mercer, Rock Island and 2 more | 56 min |
| Aug 3, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Fulton, Hancock, Henderson, Henry, Knox, McDonough and 3 more | 5 hr |
| Aug 3, 9:52 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Grundy, Kane, Kendall, Lake and 3 more | 53 min |
| Aug 3, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 32 more | 6 hr |
| Aug 4, 1:42 AM CDT | Mesoscale Discussion | SPC | Fulton, Henderson, Jersey, Livingston, McDonough, Mason and 5 more | 2 hr |
| Aug 4, 3:52 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 32 more | 53 min |
| Aug 4, 3:39 PM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 96 min |
| Aug 3, 11:34 PM CDT | Mesoscale Discussion | SPC | Clark, Putnam, Schuyler, Scotland | 86 min |
Nearby
Mesoscale Discussions in Missouri, 2004Mesoscale Discussions in Illinois, 2004Mesoscale Discussions in Kansas, 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.