Alert archive / Oklahoma / Mesoscale Discussions in 2018
Mesoscale Discussion 88
The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2018, 6:17 AM CST for 19 counties in Oklahoma; 15 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Feb 24, 2018, 6:17 AM CST (12:17 UTC)
- Expired
- Feb 24, 2018, 8:15 AM CST
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 34 counties
Bryan County, OK, Caddo County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Pontotoc County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Denton County, TX, Grayson County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX
The radar
The Altus AFB radar (KFDR), 98 km from the middle of the area, began a volume at 12:17 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, 0.3 hours before the alert went out and 151 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
- 19 J/kg
- Mixed-layer CIN
- -307 J/kg
- Mixed-layer LCL
- 445 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 391 m²/s²
- 0-3 km storm-relative helicity
- 518 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
<!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 24, 10:26 AM CST | Mesoscale Discussion | SPC | McCurtain | 64 min |
| Feb 24, 11:01 AM CST | Tornado Watch | SPC | McCurtain | 8 hr |
| Feb 24, 1:39 PM CST | Mesoscale Discussion | SPC | Choctaw, McCurtain | 2 hr |
| Feb 24, 4:09 AM CST | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Comanche and 18 more | 2 hr |
| Feb 24, 5:29 PM CST | Mesoscale Discussion | SPC | Angelina, Nacogdoches, Sabine, San Augustine, Shelby | 91 min |
Nearby
Mesoscale Discussions in Oklahoma, 2018Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.