Alert archive / Texas / Mesoscale Discussions in 2013
Mesoscale Discussion 647
The Storm Prediction Center issued this mesoscale discussion at May 15, 2013, 5:40 PM CDT for Love County, Oklahoma; 27 counties in Texas. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2013, 5:40 PM CDT (22:40 UTC)
- Expired
- May 15, 2013, 6:45 PM CDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 28 counties
Love County, OK, Bell County, TX, Bosque County, TX, Burnet County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Ellis County, TX, Erath County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Williamson County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 47 km from the middle of the area, began a volume at 22:40 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
Fort Worth, TX (KFWD), launched 12:00Z, 10.7 hours before the alert went out and 66 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
- 109 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 15, 2:59 PM CDT | Mesoscale Discussion | SPC | Carter, Coal, Cotton, Garvin, Jefferson, Johnston and 6 more | 91 min |
| May 15, 3:04 PM CDT | Mesoscale Discussion | SPC | Carter, Coal, Cotton, Garvin, Jefferson, Johnston and 6 more | 86 min |
| May 15, 3:28 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Coal, Cotton, Garvin and 8 more | 9 hr |
| May 15, 6:01 PM CDT | Tornado Watch | SPC | Bryan, Carter, Jefferson, Johnston, Love, Marshall and 1 more | 8 hr |
| May 14, 7:55 PM CDT | Mesoscale Discussion | SPC | Bandera, Dimmit, Edwards, Frio, Kerr, Kimble and 10 more | 2 hr |
| May 15, 5:24 PM CDT | Mesoscale Discussion | SPC | Bandera, Blanco, Edwards, Gillespie, Kendall, Kerr and 9 more | 3 hr |
Nearby
Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Oklahoma, 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; radar from the NEXRAD Level II archive.