Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 493
The Storm Prediction Center issued this mesoscale discussion at Apr 11, 2012, 5:21 PM MDT for 11 counties in New Mexico; 21 counties in Texas. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2012, 5:21 PM MDT (23:21 UTC)
- Expired
- Apr 11, 2012, 6:45 PM MDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 32 counties
Chaves County, NM, Curry County, NM, De Baca County, NM, Eddy County, NM, Guadalupe County, NM, Harding County, NM, Lea County, NM, Mora County, NM, Quay County, NM, Roosevelt County, NM, San Miguel County, NM, Andrews County, TX, Bailey County, TX, Cochran County, TX, Crane County, TX, Deaf Smith County, TX, Ector County, TX, Gaines County, TX, Hockley County, TX, Jeff Davis County, TX, Loving County, TX, Midland County, TX, Oldham County, TX, Parmer County, TX, Pecos County, TX, Reeves County, TX, Terrell County, TX, Terry County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX
The radar
The Cannon AFB radar (KFDX), 92 km from the middle of the area, began a volume at 23:24 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.4 hours before the alert went out and 253 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
- 676 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1126 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
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 |
|---|---|---|---|---|
| Apr 11, 1:05 PM MDT | Mesoscale Discussion | SPC | Chaves, Colfax, Curry, De Baca, Guadalupe, Harding and 9 more | 115 min |
| Apr 11, 1:53 PM MDT | Mesoscale Discussion | SPC | Eddy, Otero | 97 min |
| Apr 11, 2:05 PM MDT | Mesoscale Discussion | SPC | Union | 25 min |
| Apr 11, 2:11 PM MDT | Tornado Watch | SPC | Union | 7 hr |
| Apr 11, 2:43 PM MDT | Severe Thunderstorm Watch | SPC | Chaves, Colfax, Curry, De Baca, Eddy, Guadalupe and 6 more | 6 hr |
| Apr 11, 5:08 PM MDT | Mesoscale Discussion | SPC | Armstrong, Carson, Dallam, Gray, Hansford, Hartley and 7 more | 97 min |
Nearby
Mesoscale Discussions in Texas, 2012Mesoscale Discussions in New Mexico, 2012Every mesoscale discussion in 2012
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.