Alert archive / Oklahoma / Mesoscale Discussions in 2018
Mesoscale Discussion 581
The Storm Prediction Center issued this mesoscale discussion at May 30, 2018, 10:40 PM CDT for 10 counties in Kansas; 20 counties in Oklahoma; Lipscomb County, Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 30, 2018, 10:40 PM CDT (03:40 UTC)
- Expired
- May 31, 2018, 12:45 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Barber County, KS, Butler County, KS, Chautauqua County, KS, Comanche County, KS, Cowley County, KS, Elk County, KS, Harper County, KS, Kingman County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Blaine County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, Noble County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Lipscomb County, TX
The radar
The Vance AFB radar (KVNX), 32 km from the middle of the area, began a volume at 03:43 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
Dodge City, (KDDC), launched 00:00Z, 3.7 hours before the alert went out and 165 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
- 201 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 2377 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| May 30, 8:22 PM CDT | Mesoscale Discussion | SPC | Barber, Butler, Chautauqua, Comanche, Cowley, Elk and 9 more | 53 min |
| May 30, 9:14 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Barber, Butler, Chautauqua, Clark, Comanche and 12 more | 8 hr |
| May 31, 2:59 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more | 61 min |
| May 31, 1:07 AM CDT | Mesoscale Discussion | SPC | Noble, Pawnee | 53 min |
Nearby
Mesoscale Discussions in Oklahoma, 2018Mesoscale Discussions in Kansas, 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.