Alert archive / Alabama / Mesoscale Discussions in 2013
Mesoscale Discussion 147
The Storm Prediction Center issued this mesoscale discussion at Feb 10, 2013, 9:32 PM CST for 4 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Feb 10, 2013, 9:32 PM CST (03:32 UTC)
- Expired
- Feb 10, 2013, 11:00 PM CST
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 34 counties
Butler County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Calhoun County, GA, Clay County, GA, Early County, GA, Miller County, GA, Randolph County, GA, East Baton Rouge Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Forrest County, MS, George County, MS, Greene County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 105 km from the middle of the area, began a volume at 03:33 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
Birmingham, AL (KBMX), launched 00:00Z, 3.5 hours before the alert went out and 228 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
- 14 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -133 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
<!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 10, 6:05 PM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Butler, Conecuh, Covington, Crenshaw and 2 more | 85 min |
| Feb 10, 6:23 PM CST | Mesoscale Discussion | SPC | Bullock, Butler, Choctaw, Clarke, Conecuh, Crenshaw and 7 more | 97 min |
| Feb 11, 1:55 AM CST | Mesoscale Discussion | SPC | Butler, Clarke, Conecuh, Monroe, Washington, Wilcox | 95 min |
| Feb 11, 11:58 AM CST | Mesoscale Discussion | SPC | Geneva, Houston | 92 min |
| Feb 11, 1:01 PM CST | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, East Baton Rouge and 12 more | 89 min |
Nearby
Mesoscale Discussions in Alabama, 2013Mesoscale Discussions in Mississippi, 2013Mesoscale Discussions in Louisiana, 2013Every mesoscale discussion in 2013
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.