Alert archive / Missouri / Mesoscale Discussions in 2007
Mesoscale Discussion 1880
The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2007, 11:12 AM CDT for 30 counties in Illinois; 40 counties in Missouri. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 2007, 11:12 AM CDT (16:12 UTC)
- Expired
- Aug 24, 2007, 12:45 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 70 counties
Bond County, IL, Calhoun County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Greene County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Shelby County, IL, Washington County, IL, Wayne County, IL, Bollinger County, MO, Camden County, MO, Cape Girardeau County, MO, Christian County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Osage County, MO, Perry County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 16:14 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
Springfield, MO (KSGF), launched 12:00Z, 4.2 hours before the alert went out and 244 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
- 1334 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 948 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.3
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 23, 7:10 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Cook, Ford, Fulton, Grundy, Hancock and 20 more | 5 hr |
| Aug 23, 11:07 PM CDT | Mesoscale Discussion | SPC | Bureau, Grundy, Henderson, Henry, Kankakee, Kendall and 11 more | 53 min |
| Aug 24, 12:19 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 37 more | 8 hr |
| Aug 24, 2:44 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 34 more | 91 min |
| Aug 24, 3:04 PM CDT | Severe Thunderstorm Watch | SPC | Ford, Iroquois | 7 hr |
| Aug 24, 5:50 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 39 more | 85 min |
| Aug 23, 7:47 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, DeKalb, Gentry, Harrison and 5 more | 118 min |
| Aug 23, 7:55 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, DeKalb, Gentry, Harrison and 5 more | 2 hr |
| Aug 23, 11:01 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 9 more | 119 min |
| Aug 24, 3:05 AM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Caldwell, Carroll, Clay, Clinton and 6 more | 115 min |
| Aug 24, 1:31 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Christian, Dade, Greene, Jasper and 5 more | 89 min |
Nearby
Mesoscale Discussions in Missouri, 2007Mesoscale Discussions in Illinois, 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.