Alert archive / Kentucky / Mesoscale Discussions in 2019
Mesoscale Discussion 1817
The Storm Prediction Center issued this mesoscale discussion at Aug 20, 2019, 5:32 PM CDT for 36 counties in Kentucky. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Aug 20, 2019, 5:32 PM CDT (22:32 UTC)
- Expired
- Aug 20, 2019, 7:30 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 36 counties
Adair County, KY, Allen County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Estill County, KY, Fayette County, KY, Garrard County, KY, Green County, KY, Harrison County, KY, Hart County, KY, Jessamine County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Nicholas County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY
The radar
The Louisville radar (KLVX), 100 km from the middle of the area, began a volume at 22:33 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
Nashville Metro, TN (KBNA), launched 12:00Z, 10.5 hours before the alert went out and 212 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
- 1377 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 64 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 |
|---|---|---|---|---|
| Aug 20, 1:53 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Anderson, Ballard, Barren, Bourbon and 61 more | 5 hr |
| Aug 20, 2:29 PM CDT | Mesoscale Discussion | SPC | Bracken, Campbell, Kenton, Pendleton | 91 min |
| Aug 20, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Campbell, Carroll, Gallatin, Grant, Kenton and 2 more | 2 hr |
Nearby
Mesoscale Discussions in Kentucky, 2019Every mesoscale discussion in 2019
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.