Alert archive / Kentucky / Mesoscale Discussions in 2017
Mesoscale Discussion 578
The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2017, 2:33 PM CDT for 50 counties in Kentucky; 19 counties in Tennessee. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2017, 2:33 PM CDT (19:33 UTC)
- Expired
- Apr 28, 2017, 4:00 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 69 counties
Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Laurel County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Owen County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Woodford County, KY, Cannon County, TN, Clay County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Jackson County, TN, Macon County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, White County, TN, Wilson County, TN
The radar
The Louisville radar (KLVX), 88 km from the middle of the area, began a volume at 19:33 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 275 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
- 1025 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 28, 1:10 PM CDT | Mesoscale Discussion | SPC | Ballard, Breckinridge, Crittenden, Daviess, Hancock, Henderson and 5 more | 2 hr |
| Apr 28, 4:59 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Ballard, Barren, Breckinridge, Butler and 36 more | 91 min |
| Apr 28, 5:48 PM CDT | Mesoscale Discussion | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 5 more | 117 min |
| Apr 28, 6:28 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Carlisle, Crittenden, Fulton, Graves and 9 more | 3 hr |
Nearby
Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Tennessee, 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; radar from the NEXRAD Level II archive.