Alert archive / Texas / Mesoscale Discussions in 2015
Mesoscale Discussion 314
The Storm Prediction Center issued this mesoscale discussion at Apr 16, 2015, 4:06 PM CDT for Jackson County, Oklahoma; 52 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 16, 2015, 4:06 PM CDT (21:06 UTC)
- Expired
- Apr 16, 2015, 6:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 53 counties
Jackson County, OK, Archer County, TX, Baylor County, TX, Borden County, TX, Brown County, TX, Callahan County, TX, Childress County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Cottle County, TX, Crockett County, TX, Dickens County, TX, Eastland County, TX, Edwards County, TX, Fisher County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Kent County, TX, Kimble County, TX, King County, TX, Knox County, TX, McCulloch County, TX, Menard County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX
The radar
The San Angelo radar (KSJT), 50 km from the middle of the area, began a volume at 21:10 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
Midland Regional, TX (KMAF), launched 12:00Z, 9.1 hours before the alert went out and 150 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
- 97 J/kg
- Mixed-layer CIN
- -316 J/kg
- Mixed-layer LCL
- 2063 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 200 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 |
|---|---|---|---|---|
| Apr 16, 12:17 PM CDT | Mesoscale Discussion | SPC | Beaver, Harper | 118 min |
| Apr 16, 1:48 PM CDT | Tornado Watch | SPC | Beaver, Texas | 8 hr |
| Apr 16, 2:42 PM CDT | Mesoscale Discussion | SPC | Love | 63 min |
| Apr 16, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | Comanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more | 7 hr |
| Apr 16, 4:44 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Custer, Dewey, Ellis, Greer and 7 more | 3 hr |
| Apr 16, 4:59 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Custer, Dewey and 9 more | 7 hr |
| Apr 16, 5:06 PM CDT | Mesoscale Discussion | SPC | Beaver, Texas | 84 min |
| Apr 16, 5:29 PM CDT | Mesoscale Discussion | SPC | Cimarron | 91 min |
| Apr 16, 5:41 PM CDT | Mesoscale Discussion | SPC | Beckham, Roger Mills | 94 min |
| Apr 16, 6:09 PM CDT | Tornado Watch | SPC | Beckham, Ellis, Greer, Harmon, Roger Mills | 6 hr |
| Apr 16, 12:49 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Castro, Crosby, Donley and 15 more | 116 min |
| Apr 16, 1:34 PM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Bell, Bexar, Blanco, Bosque and 48 more | 116 min |
| Apr 16, 2:22 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Aransas, Austin, Bastrop, Bee, Bell and 81 more | 8 hr |
| Apr 16, 4:59 PM CDT | Mesoscale Discussion | SPC | Angelina, Cherokee, Gregg, Hardin, Houston, Jasper and 12 more | 91 min |
| Apr 16, 6:19 PM CDT | Mesoscale Discussion | SPC | Anderson, Aransas, Austin, Bastrop, Bell, Bexar and 84 more | 86 min |
Nearby
Mesoscale Discussions in Texas, 2015Mesoscale Discussions in Oklahoma, 2015Every mesoscale discussion in 2015
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.