Alert archive / Nebraska / Mesoscale Discussions in 2017
Mesoscale Discussion 1681
The Storm Prediction Center issued this mesoscale discussion at Oct 1, 2017, 8:14 PM CDT for 7 counties in Kansas; 38 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 1, 2017, 8:14 PM CDT (01:14 UTC)
- Expired
- Oct 1, 2017, 10:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Decatur County, KS, Graham County, KS, Jewell County, KS, Norton County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Lincoln County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 84 km from the middle of the area, began a volume at 01:16 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.2 hours before the alert went out and 121 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
- 825 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1777 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 7.1
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 |
|---|---|---|---|---|
| Oct 1, 10:54 PM CDT | Mesoscale Discussion | SPC | Ellis, Graham, Jewell, Mitchell, Osborne, Phillips and 5 more | 2 hr |
| Oct 2, 3:19 PM CDT | Mesoscale Discussion | SPC | Finney, Grant, Gray, Haskell, Kearny, Lane and 7 more | 116 min |
| Oct 2, 5:25 PM CDT | Tornado Watch | SPC | Finney, Gove, Graham, Greeley, Hamilton, Kearny and 10 more | 6 hr |
| Oct 2, 6:40 PM CDT | Mesoscale Discussion | SPC | Burt, Butler, Clay, Colfax, Cuming, Dakota and 13 more | 3 hr |
Nearby
Mesoscale Discussions in Nebraska, 2017Mesoscale Discussions in Kansas, 2017Every mesoscale discussion in 2017
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.