Alert archive / Arkansas / Mesoscale Discussions in 2008
Mesoscale Discussion 446
The Storm Prediction Center issued this mesoscale discussion at Mar 17, 2008, 9:36 PM CDT for 26 counties in Arkansas; 5 counties in Missouri; 10 counties in Oklahoma. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 17, 2008, 9:36 PM CDT (02:36 UTC)
- Expired
- Mar 17, 2008, 11:30 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 41 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Perry County, AR, Pope County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Barry County, MO, McDonald County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Creek County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Western Arkansas radar (KSRX), 81 km from the middle of the area, began a volume at 02:36 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
Springfield, MO (KSGF), launched 00:00Z, 2.6 hours before the alert went out and 116 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 931 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 442 m²/s²
- 0-3 km storm-relative helicity
- 503 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 |
|---|---|---|---|---|
| Mar 17, 7:34 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more | 56 min |
| Mar 17, 10:16 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 31 more | 8 hr |
| Mar 18, 1:13 AM CDT | Mesoscale Discussion | SPC | Washington | 62 min |
| Mar 18, 2:23 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Fulton, Madison and 2 more | 2 hr |
| Mar 18, 2:46 AM CDT | Mesoscale Discussion | SPC | Baxter, Cleburne, Conway, Crawford, Faulkner, Franklin and 27 more | 89 min |
| Mar 18, 5:54 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Madison, Washington | 2 hr |
| Mar 18, 9:26 AM CDT | Mesoscale Discussion | SPC | Calhoun, Clark, Columbia, Conway, Dallas, Garland and 19 more | 2 hr |
| Mar 18, 10:16 AM CDT | Tornado Watch | SPC | Arkansas, Clark, Clay, Cleburne, Cleveland, Columbia and 48 more | 7 hr |
| Mar 18, 10:59 AM CDT | Tornado Watch | SPC | Union | 8 hr |
| Mar 18, 11:54 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 6 more | 3 hr |
| Mar 18, 12:10 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clark, Cleburne, Cleveland, Conway, Craighead and 47 more | 2 hr |
| Mar 18, 1:51 PM CDT | Mesoscale Discussion | SPC | Polk, Sevier | 3 hr |
| Mar 18, 3:54 PM CDT | Mesoscale Discussion | SPC | Clark, Cleburne, Columbia, Dallas, Faulkner, Garland and 21 more | 2 hr |
| Mar 18, 4:46 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clark, Clay, Craighead, Crittenden, Cross and 19 more | 59 min |
| Mar 18, 5:19 PM CDT | Tornado Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 43 more | 11 hr |
| Mar 18, 6:06 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Cleburne, Conway, Craighead, Cross and 20 more | 3 hr |
| Mar 18, 6:47 PM CDT | Tornado Watch | SPC | Union | 9 hr |
| Mar 17, 7:09 PM CDT | Severe Thunderstorm Watch | SPC | Caddo, Canadian, Carter, Cleveland, Coal, Comanche and 19 more | 7 hr |
| Mar 17, 10:21 PM CDT | Mesoscale Discussion | SPC | Blaine, Caddo, Canadian, Carter, Cleveland, Coal and 25 more | 54 min |
Nearby
Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Missouri, 2008Every mesoscale discussion in 2008
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.