Alert archive / Tennessee / Mesoscale Discussions in 2017
Mesoscale Discussion 209
The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2017, 8:50 PM CST for 4 counties in Alabama; 11 counties in Kentucky; 32 counties in Tennessee. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Feb 24, 2017, 8:50 PM CST (02:50 UTC)
- Expired
- Feb 24, 2017, 10:15 PM CST
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 47 counties
Jackson County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Adair County, KY, Clinton County, KY, Cumberland County, KY, Knox County, KY, Laurel County, KY, McCreary County, KY, Monroe County, KY, Pulaski County, KY, Russell County, KY, Wayne County, KY, Whitley County, KY, Bedford County, TN, Bledsoe County, TN, Campbell County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Jackson County, TN, Lincoln County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Wilson County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 2.8 hours before the alert went out and 87 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
- 391 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1931 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.5
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, 7:49 PM CST | Mesoscale Discussion | SPC | Anderson, Bath, Boone, Bourbon, Boyd, Bracken and 23 more | 116 min |
Nearby
Mesoscale Discussions in Tennessee, 2017Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Alabama, 2017Every mesoscale discussion in 2017
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.