Alert archive / Nebraska / Mesoscale Discussions in 2007
Mesoscale Discussion 859
The Storm Prediction Center issued this mesoscale discussion at May 22, 2007, 2:26 PM CDT for 17 counties in Kansas; 23 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2007, 2:26 PM CDT (19:26 UTC)
- Expired
- May 22, 2007, 4:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Decatur County, KS, Ellis County, KS, Gove County, KS, Graham County, KS, Lane County, KS, Logan County, KS, Ness County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wichita County, KS, Adams County, NE, Blaine County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Hall County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Phelps County, NE, Red Willow County, NE, Sherman County, NE, Valley County, NE
The radar
The Grand Island radar (KUEX), 141 km from the middle of the area, began a volume at 19:28 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.4 hours before the alert went out and 109 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
- 147 J/kg
- Mixed-layer CIN
- -221 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 135 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 22, 3:04 PM CDT | Tornado Watch | SPC | Cheyenne, Decatur, Ellis, Finney, Gove, Graham and 22 more | 8 hr |
| May 22, 6:36 PM CDT | Mesoscale Discussion | SPC | Decatur, Ellis, Gove, Graham, Greeley, Lane and 14 more | 84 min |
| May 22, 2:08 PM CDT | Mesoscale Discussion | SPC | Brown, Cherry, Keya Paha | 2 hr |
| May 22, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | Blaine, Boyd, Brown, Cherry, Garfield, Holt and 8 more | 8 hr |
Nearby
Mesoscale Discussions in Nebraska, 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.