Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 583
The Storm Prediction Center issued this mesoscale discussion at Apr 18, 2005, 2:09 PM CDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2005, 2:09 PM CDT (19:09 UTC)
- Expired
- Apr 18, 2005, 4:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 54 counties
Haskell County, KS, Morton County, KS, Seward County, KS, Stevens County, KS, Curry County, NM, Eddy County, NM, Lea County, NM, Roosevelt County, NM, Beaver County, OK, Texas County, OK, Andrews County, TX, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Cochran County, TX, Crane County, TX, Crosby County, TX, Dallam County, TX, Dawson County, TX, Deaf Smith County, TX, Donley County, TX, Ector County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hansford County, TX, Hartley County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Loving County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Pecos County, TX, Potter County, TX, Randall County, TX, Reeves County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX
The radar
The Cannon AFB radar (KFDX), 98 km from the middle of the area, began a volume at 19:13 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 7.2 hours before the alert went out and 145 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
- 59 J/kg
- Mixed-layer CIN
- -319 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 237 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 17, 9:18 PM CDT | Mesoscale Discussion | SPC | Clark, Comanche, Edwards, Finney, Ford, Grant and 17 more | 87 min |
| Apr 18, 12:08 PM CDT | Mesoscale Discussion | SPC | Marshall, Nemaha, Washington | 2 hr |
| Apr 18, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Ford, Grant, Gray, Haskell, Meade and 3 more | 7 hr |
| Apr 18, 5:55 PM CDT | Mesoscale Discussion | SPC | Clark, Ford, Grant, Gray, Haskell, Kearny and 4 more | 2 hr |
| Apr 18, 5:56 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Logan, Rawlins, Sherman, Thomas, Wallace | 3 hr |
| Apr 17, 9:40 PM CDT | Mesoscale Discussion | SPC | Chaves, Curry, De Baca, Eddy, Guadalupe, Lea and 2 more | 95 min |
| Apr 18, 6:43 PM CDT | Mesoscale Discussion | SPC | Greer, Harmon, Jackson | 62 min |
Nearby
Mesoscale Discussions in Texas, 2005Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in New Mexico, 2005Every mesoscale discussion in 2005
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.