Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 269
The Storm Prediction Center issued this mesoscale discussion at Mar 11, 2007, 4:50 PM CDT for 39 counties in Texas. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Mar 11, 2007, 4:50 PM CDT (21:50 UTC)
- Expired
- Mar 11, 2007, 6:15 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 39 counties
Bandera County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Caldwell County, TX, Callahan County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Eastland County, TX, Erath County, TX, Gillespie County, TX, Guadalupe County, TX, Hamilton County, TX, Hays County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Medina County, TX, Menard County, TX, Mills County, TX, Real County, TX, Runnels County, TX, San Saba County, TX, Somervell County, TX, Taylor County, TX, Travis County, TX, Uvalde County, TX, Williamson County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 128 km from the middle of the area, began a volume at 21:50 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
Del Rio, TX (KDRT), launched 12:00Z, 9.8 hours before the alert went out and 232 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
- 449 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 126 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 |
|---|---|---|---|---|
| Mar 11, 3:29 AM CDT | Mesoscale Discussion | SPC | Clay, Wichita, Wilbarger | 91 min |
| Mar 11, 10:18 AM CDT | Mesoscale Discussion | SPC | Borden, Coke, Dawson, Garza, Glasscock, Howard and 13 more | 87 min |
| Mar 11, 1:58 PM CDT | Tornado Watch | SPC | Brewster, Coke, Crane, Crockett, Edwards, Irion and 13 more | 7 hr |
| Mar 11, 2:25 PM CDT | Mesoscale Discussion | SPC | Archer, Clay, Collin, Cooke, Denton, Fannin and 10 more | 95 min |
| Mar 11, 5:16 PM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bell, Bexar, Blanco, Brown and 37 more | 8 hr |
| Mar 11, 5:27 PM CDT | Mesoscale Discussion | SPC | Concho, Crockett, Edwards, Irion, Kimble, Menard and 7 more | 2 hr |
Nearby
Mesoscale Discussions in Texas, 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.