Alert archive / Nebraska / Mesoscale Discussions in 2009
Mesoscale Discussion 954
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2009, 5:37 PM MDT for 4 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2009, 5:37 PM MDT (23:37 UTC)
- Expired
- Jun 5, 2009, 7:00 PM MDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 31 counties
Kit Carson County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Arthur County, NE, Banner County, NE, Box Butte County, NE, Chase County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Grant County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 155 km from the middle of the area, began a volume at 23:38 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
Denver, CO (KDNR), launched 12:00Z, 11.6 hours before the alert went out and 99 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
- 997 J/kg
- Mixed-layer CIN
- -190 J/kg
- Mixed-layer LCL
- 1029 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 |
|---|---|---|---|---|
| Jun 5, 2:18 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Kit Carson, Logan, Morgan, Phillips and 3 more | 87 min |
| Jun 5, 2:48 PM MDT | Tornado Watch | SPC | Kit Carson, Logan, Morgan, Phillips, Sedgwick, Washington and 2 more | 7 hr |
| Jun 5, 2:58 PM MDT | Mesoscale Discussion | SPC | Morton, Seward, Stevens | 62 min |
| Jun 5, 3:39 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Ellis, Finney, Ford, Grant, Gray and 15 more | 9 hr |
| Jun 5, 5:06 PM MDT | Tornado Watch | SPC | Arthur, Blaine, Brown, Chase, Cherry, Frontier and 10 more | 7 hr |
Nearby
Mesoscale Discussions in Nebraska, 2009Mesoscale Discussions in Colorado, 2009Mesoscale Discussions in Wyoming, 2009Every mesoscale discussion in 2009
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.