Alert archive / Kentucky / Mesoscale Discussions in 2007
Mesoscale Discussion 603
The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2007, 7:57 PM EDT for 35 counties in Kentucky; 17 counties in Tennessee. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2007, 7:57 PM EDT (23:57 UTC)
- Expired
- Apr 26, 2007, 9:30 PM EDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 52 counties
Bath County, KY, Bell County, KY, Breathitt County, KY, Carter County, KY, Clark County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Greenup County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Lewis County, KY, Madison County, KY, Magoffin County, KY, Mason County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owsley County, KY, Perry County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Whitley County, KY, Wolfe County, KY, Anderson County, TN, Blount County, TN, Campbell County, TN, Claiborne County, TN, Cumberland County, TN, Grainger County, TN, Hancock County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Roane County, TN, Scott County, TN, Union County, TN
The radar
The Knoxville radar (KMRX), 91 km from the middle of the area, began a volume at 23:59 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
Nashville Metro, TN (KBNA), launched 12:00Z, 12.0 hours before the alert went out and 258 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
- 159 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.7
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 |
|---|---|---|---|---|
| Apr 26, 1:51 PM EDT | Mesoscale Discussion | SPC | Campbell | 54 min |
| Apr 26, 2:26 PM EDT | Tornado Watch | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more | 8 hr |
| Apr 26, 3:07 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bourbon and 46 more | 53 min |
| Apr 26, 4:18 PM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 59 more | 7 hr |
| Apr 26, 6:42 PM EDT | Mesoscale Discussion | SPC | Bracken, Campbell, Kenton, Lewis, Mason, Pendleton | 93 min |
| Apr 26, 5:33 PM EDT | Mesoscale Discussion | SPC | Bradley, Franklin, Hamilton, Marion, Polk | 57 min |
| Apr 26, 5:53 PM EDT | Tornado Watch | SPC | Bradley, Franklin, Hamilton, Marion, Polk | 5 hr |
Nearby
Mesoscale Discussions in Kentucky, 2007Mesoscale Discussions in Tennessee, 2007Every mesoscale discussion in 2007
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.