Alert archive / Iowa / Mesoscale Discussions in 2024
Mesoscale Discussion 1513
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2024, 5:13 PM CDT for 8 counties in Illinois; 17 counties in Iowa; 5 counties in Missouri. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2024, 5:13 PM CDT (22:13 UTC)
- Expired
- Jul 2, 2024, 6:45 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 497
All 30 counties
Cedar County, IA, Clinton County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Carroll County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Mercer County, IL, Rock Island County, IL, Warren County, IL, Whiteside County, IL, Adair County, MO, Clark County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 78 km from the middle of the area, began a volume at 22:16 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
Davenport, (KDVN), launched 12:00Z, 10.2 hours before the alert went out and 84 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
- 1514 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 468 m²/s²
- 0-3 km storm-relative helicity
- 487 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
<!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 |
|---|---|---|---|---|
| Jul 2, 3:14 PM CDT | Tornado Watch | SPC | Carroll, Hancock, Henderson, Henry, Jo Daviess, McDonough and 4 more | 7 hr |
| Jul 2, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams | 7 hr |
| Jul 2, 6:09 PM CDT | Mesoscale Discussion | SPC | Rock Island | 66 min |
| Jul 2, 6:27 PM CDT | Mesoscale Discussion | SPC | Boone, Brown, Bureau, Cass, DeKalb, Fulton and 13 more | 2 hr |
| Jul 2, 2:24 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Benton, Clarke, Davis and 26 more | 2 hr |
Nearby
Mesoscale Discussions in Iowa, 2024Mesoscale Discussions in Illinois, 2024Mesoscale Discussions in Missouri, 2024Every mesoscale discussion in 2024
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.