Alert archive / Arkansas / Mesoscale Discussions in 2018
Mesoscale Discussion 897
The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2018, 6:49 PM CDT for 26 counties in Arkansas; 4 counties in Missouri. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2018, 6:49 PM CDT (23:49 UTC)
- Expired
- Jun 26, 2018, 8:45 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 30 counties
Baxter County, AR, Boone County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Marion County, AR, Newton County, AR, Poinsett County, AR, Pope County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Howell County, MO, Oregon County, MO, Ozark County, MO, Ripley County, MO
The radar
The Little Rock radar (KLZK), 126 km from the middle of the area, began a volume at 23:51 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
Springfield, MO (KSGF), launched 12:00Z, 11.8 hours before the alert went out and 182 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
- 710 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 326 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.7
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 |
|---|---|---|---|---|
| Jun 26, 12:56 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Madison, Washington | 64 min |
| Jun 26, 1:26 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Madison, Washington | 6 hr |
| Jun 26, 2:46 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Washington | 89 min |
| Jun 26, 5:26 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Clay, Cleburne, Conway, Craighead and 22 more | 6 hr |
| Jun 25, 8:08 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Franklin, Jefferson, Mississippi, Perry and 7 more | 2 hr |
| Jun 26, 2:19 AM CDT | Mesoscale Discussion | SPC | Barry, Benton, Callaway, Camden, Cedar, Christian and 32 more | 116 min |
| Jun 26, 7:39 AM CDT | Mesoscale Discussion | SPC | Benton, Bollinger, Boone, Callaway, Camden, Cape Girardeau and 43 more | 2 hr |
| Jun 26, 12:16 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Cass, Cedar, Dade and 10 more | 59 min |
| Jun 26, 12:35 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Benton, Camden, Carroll, Cass and 31 more | 7 hr |
| Jun 26, 1:53 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 13 more | 67 min |
| Jun 26, 2:22 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Boone, Callaway, Cape Girardeau, Cole, Crawford and 19 more | 6 hr |
Nearby
Mesoscale Discussions in Arkansas, 2018Mesoscale Discussions in Missouri, 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.