Alert archive / Kentucky / Mesoscale Discussions in 2017
Mesoscale Discussion 153
The Storm Prediction Center issued this mesoscale discussion at Feb 7, 2017, 4:57 PM CST for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 7, 2017, 4:57 PM CST (22:57 UTC)
- Expired
- Feb 7, 2017, 7:00 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 41 counties
Massac County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Spencer County, IN, Washington County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Oldham County, KY, Trigg County, KY, Trimble County, KY, Webster County, KY, Mississippi County, MO
The radar
The Evansville,IN radar (KVWX), 78 km from the middle of the area, began a volume at 22:59 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 nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 11.0 hours before the alert went out and 179 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
- 806 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 367 m²/s²
- 0-3 km storm-relative helicity
- 336 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 |
|---|---|---|---|---|
| Feb 6, 11:20 PM CST | Mesoscale Discussion | SPC | Brown, Cass, Champaign, Christian, Clark, Clay and 36 more | 115 min |
| Feb 7, 1:52 AM CST | Mesoscale Discussion | SPC | Alexander | 113 min |
| Feb 7, 7:28 AM CST | Mesoscale Discussion | SPC | Allen, Logan, Simpson, Todd, Warren | 2 hr |
| Feb 6, 10:31 PM CST | Mesoscale Discussion | SPC | Butler, Dunklin, Pemiscot, Ripley | 2 hr |
| Feb 6, 10:59 PM CST | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Howell and 9 more | 9 hr |
Nearby
Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Indiana, 2017Mesoscale Discussions in Illinois, 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.