Alert archive / Nebraska / Mesoscale Discussions in 2007
Mesoscale Discussion 674
The Storm Prediction Center issued this mesoscale discussion at May 3, 2007, 6:34 PM MDT for 5 counties in Colorado; 6 counties in Nebraska. It was in force for 26 min.
The area
The outline as issued.
The facts
- Issued
- May 3, 2007, 6:34 PM MDT (00:34 UTC)
- Expired
- May 3, 2007, 7:00 PM MDT
- In force
- 26 min
- Issued by
- the Storm Prediction Center
Counties Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Weld County, CO, Banner County, NE, Cheyenne County, NE, Deuel County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 131 km from the middle of the area, began a volume at 00:37 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
Denver, CO (KDNR), launched 00:00Z, 0.6 hours before the alert went out and 135 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
- 394 J/kg
- Mixed-layer CIN
- -118 J/kg
- Mixed-layer LCL
- 2658 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
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 3, 6:43 PM MDT | Tornado Watch | SPC | Adams, Arapahoe, Logan, Morgan, Phillips, Sedgwick and 3 more | 5 hr |
| May 3, 8:57 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Elbert, Kit Carson, Lincoln, Logan, Morgan and 4 more | 93 min |
| May 4, 4:07 PM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln and 4 more | 83 min |
| May 4, 5:36 PM MDT | Tornado Watch | SPC | Cheyenne, Elbert, Kit Carson, Lincoln, Logan, Morgan and 4 more | 7 hr |
| May 4, 12:19 PM MDT | Mesoscale Discussion | SPC | Antelope, Boone, Boyd, Buffalo, Burt, Butler and 32 more | 86 min |
| May 4, 1:24 PM MDT | Tornado Watch | SPC | Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more | 7 hr |
| May 4, 5:20 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Cedar, Custer and 16 more | 85 min |
Nearby
Mesoscale Discussions in Nebraska, 2007Mesoscale Discussions in Colorado, 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.