Alert archive / Alabama / Mesoscale Discussions in 2017
Mesoscale Discussion 1703
The Storm Prediction Center issued this mesoscale discussion at Oct 8, 2017, 1:13 AM CDT for 18 counties in Alabama; 6 counties in Florida. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Oct 8, 2017, 1:13 AM CDT (06:13 UTC)
- Expired
- Oct 8, 2017, 2:45 AM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 24 counties
Barbour County, AL, Bullock County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Macon County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Wilcox County, AL, Escambia County, FL, Holmes County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL
The radar
The Ft Rucker radar (KEOX), 79 km from the middle of the area, began a volume at 06:13 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
Birmingham, AL (KBMX), launched 00:00Z, 6.2 hours before the alert went out and 211 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
- 599 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 707 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.1
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 |
|---|---|---|---|---|
| Oct 7, 7:05 PM CDT | Tornado Watch | SPC | Baldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more | 7 hr |
| Oct 8, 1:41 AM CDT | Tornado Watch | SPC | Autauga, Barbour, Bullock, Butler, Coffee, Conecuh and 13 more | 8 hr |
| Oct 8, 9:04 AM CDT | Mesoscale Discussion | SPC | Autauga, Barbour, Bullock, Butler, Coffee, Conecuh and 13 more | 86 min |
Nearby
Mesoscale Discussions in Alabama, 2017Mesoscale Discussions in Florida, 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.