Alert archive / Kentucky / Mesoscale Discussions in 2017
Mesoscale Discussion 1547
The Storm Prediction Center issued this mesoscale discussion at Aug 22, 2017, 11:54 AM EDT for 5 states. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Aug 22, 2017, 11:54 AM EDT (15:54 UTC)
- Expired
- Aug 22, 2017, 1:00 PM EDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 113 counties
Clark County, IN, Floyd County, IN, Harrison County, IN, Perry County, IN, Anderson County, KY, Bath County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Clark County, KY, Elliott County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Green County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Lewis County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Rowan County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Carroll County, OH, Clermont County, OH, Columbiana County, OH, Coshocton County, OH, Fairfield County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Greene County, PA, Indiana County, PA, Lawrence County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Cabell County, WV, Doddridge County, WV, Hancock County, WV, Jackson County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Ritchie County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Cincinnati radar (KILN), 85 km from the middle of the area, began a volume at 15:56 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 3.9 hours before the alert went out and 84 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
- 793 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 939 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.7
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 22, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | Clark, Floyd, Harrison, Perry, Switzerland | 8 hr |
| Aug 22, 2:44 PM EDT | Mesoscale Discussion | SPC | Anderson, Bath, Bourbon, Boyd, Boyle, Bracken and 56 more | 91 min |
| Aug 22, 3:06 PM EDT | Mesoscale Discussion | SPC | Caldwell, Calloway, Carlisle, Christian, Crittenden, Fulton and 11 more | 2 hr |
| Aug 22, 4:39 PM EDT | Mesoscale Discussion | SPC | Anderson, Bath, Bourbon, Boyd, Boyle, Bracken and 56 more | 66 min |
| Aug 22, 11:55 AM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Clinton, Lycoming, McKean, Potter and 4 more | 3 hr |
| Aug 22, 12:23 PM EDT | Tornado Watch | SPC | Bradford, Cameron, Clinton, Elk, Lycoming, McKean and 5 more | 9 hr |
| Aug 22, 2:44 PM EDT | Mesoscale Discussion | SPC | Bradford, Potter, Tioga | 2 hr |
| Aug 22, 3:08 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 18 more | 67 min |
| Aug 22, 4:19 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 26 more | 8 hr |
| Aug 22, 4:48 PM EDT | Mesoscale Discussion | SPC | Bradford, Lycoming, McKean, Potter, Sullivan, Tioga | 87 min |
| Aug 22, 7:07 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 24 more | 113 min |
Nearby
Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Ohio, 2017Mesoscale Discussions in West Virginia, 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.