Alert archive / Nebraska / Mesoscale Discussions in 2007
Mesoscale Discussion 794
The Storm Prediction Center issued this mesoscale discussion at May 14, 2007, 3:51 PM CDT for 8 counties in Iowa; 4 counties in Kansas; 26 counties in Nebraska. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- May 14, 2007, 3:51 PM CDT (20:51 UTC)
- Expired
- May 14, 2007, 5:15 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 38 counties
Buena Vista County, IA, Cherokee County, IA, Ida County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Woodbury County, IA, Jewell County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Burt County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Platte County, NE, Polk County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 96 km from the middle of the area, began a volume at 20:52 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
Omaha, NE (KOAX), launched 12:00Z, 8.9 hours before the alert went out and 124 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
- 106 J/kg
- Mixed-layer CIN
- -500 J/kg
- Mixed-layer LCL
- 1678 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 141 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 |
|---|---|---|---|---|
| May 14, 4:27 PM CDT | Severe Thunderstorm Watch | SPC | Harrison, Mills, Monona, Pottawattamie, Shelby | 7 hr |
| May 14, 3:24 PM CDT | Mesoscale Discussion | SPC | Banner, Cheyenne, Deuel, Garden, Kimball, Morrill | 96 min |
Nearby
Mesoscale Discussions in Nebraska, 2007Mesoscale Discussions in Iowa, 2007Mesoscale Discussions in Kansas, 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.