Alert archive / Texas / Mesoscale Discussions in 2013
Mesoscale Discussion 979
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2013, 12:28 PM CDT for Calcasieu Parish, Cameron Parish, Jefferson Davis Parish, Louisiana; 25 counties in Texas. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2013, 12:28 PM CDT (17:28 UTC)
- Expired
- Jun 6, 2013, 2:00 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 28 counties
Calcasieu Parish, LA, Cameron Parish, LA, Jefferson Davis Parish, LA, Austin County, TX, Brazoria County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, Fayette County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Jackson County, TX, Jefferson County, TX, Lavaca County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, Orange County, TX, Polk County, TX, San Jacinto County, TX, Victoria County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.5 hours before the alert went out and 175 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
- 2370 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- -29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.0
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 |
|---|---|---|---|---|
| Jun 6, 5:35 PM CDT | Mesoscale Discussion | SPC | Jefferson, Lafourche, Plaquemines, Saint Bernard | 115 min |
| Jun 5, 9:44 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Archer, Baylor, Borden, Brown, Callahan and 47 more | 7 hr |
| Jun 5, 11:19 PM CDT | Mesoscale Discussion | SPC | Andrews, Archer, Bailey, Baylor, Borden, Callahan and 37 more | 116 min |
| Jun 6, 3:05 AM CDT | Mesoscale Discussion | SPC | Clay, Cooke, Denton, Montague, Parker, Tarrant and 2 more | 55 min |
| Jun 6, 2:28 PM CDT | Severe Thunderstorm Watch | SPC | Angelina, Austin, Brazoria, Brazos, Burleson, Chambers and 22 more | 8 hr |
| Jun 6, 4:57 PM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Fort Bend and 17 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Louisiana, 2013Every mesoscale discussion in 2013
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.