Alert archive / Texas / Mesoscale Discussions in 2009
Mesoscale Discussion 88
The Storm Prediction Center issued this mesoscale discussion at Feb 10, 2009, 5:25 PM CST for Little River County, Sevier County, Arkansas; McCurtain County, Oklahoma; 46 counties in Texas. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Feb 10, 2009, 5:25 PM CST (23:25 UTC)
- Expired
- Feb 10, 2009, 6:30 PM CST
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 49 counties
Little River County, AR, Sevier County, AR, McCurtain County, OK, Anderson County, TX, Bosque County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Comanche County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Hamilton County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Limestone County, TX, Marion County, TX, McLennan County, TX, Morris County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Smith County, TX, Somervell County, TX, Tarrant County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 136 km from the middle of the area, began a volume at 23:28 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 nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 11.4 hours before the alert went out and 127 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
- 235 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.6
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 |
|---|---|---|---|---|
| Feb 10, 2:42 PM CST | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 7 hr |
| Feb 10, 3:37 PM CST | Tornado Watch | SPC | Little River, Miller, Sevier | 6 hr |
| Feb 10, 4:50 PM CST | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Conway, Faulkner, Franklin and 16 more | 85 min |
| Feb 10, 12:17 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Cotton and 20 more | 118 min |
| Feb 10, 12:49 PM CST | Tornado Watch | SPC | Blaine, Caddo, Canadian, Carter, Cleveland, Comanche and 19 more | 9 hr |
| Feb 10, 1:29 PM CST | Mesoscale Discussion | SPC | Kay, Noble, Nowata, Osage, Pawnee, Washington | 2 hr |
| Feb 10, 2:16 PM CST | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Hughes and 12 more | 119 min |
| Feb 10, 2:33 PM CST | Mesoscale Discussion | SPC | Caddo, Canadian, Carter, Cleveland, Comanche, Cotton and 13 more | 87 min |
| Feb 10, 3:45 PM CST | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Comanche, Concho, Eastland and 16 more | 90 min |
Nearby
Mesoscale Discussions in Texas, 2009Mesoscale Discussions in Arkansas, 2009Mesoscale Discussions in Oklahoma, 2009Every mesoscale discussion in 2009
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.