Alert archive / Louisiana / Mesoscale Discussions in 2022
Mesoscale Discussion 89
The Storm Prediction Center issued this mesoscale discussion at Jan 19, 2022, 5:47 PM CST for Columbia County, Union County, Arkansas; 26 parishes in Louisiana; 25 counties in Texas. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Jan 19, 2022, 5:47 PM CST (23:47 UTC)
- Expired
- Jan 19, 2022, 7:45 PM CST
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 16
All 53 counties
Columbia County, AR, Union County, AR, Allen Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Austin County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Jasper County, TX, Jefferson County, TX, Lavaca County, TX, Liberty County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Tyler County, TX, Waller County, TX
The radar
The Shreveport radar (KSHV), 104 km from the middle of the area, began a volume at 23:48 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
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.8 hours before the alert went out and 187 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
- 24 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 938 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 259 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 |
|---|---|---|---|---|
| Jan 19, 11:53 AM CST | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Cleveland, Desha and 4 more | 3 hr |
| Jan 19, 1:07 PM CST | Severe Thunderstorm Watch | SPC | Columbia, Union | 8 hr |
| Jan 19, 2:20 PM CST | Severe Thunderstorm Watch | SPC | Ashley, Bradley, Chicot, Desha, Drew | 5 hr |
| Jan 19, 3:00 PM CST | Mesoscale Discussion | SPC | Caldwell, Catahoula, East Carroll, Franklin, Jackson, Madison and 5 more | 2 hr |
| Jan 19, 5:18 PM CST | Mesoscale Discussion | SPC | East Carroll, Franklin, Madison, Ouachita, Richland, Tensas and 1 more | 117 min |
Nearby
Mesoscale Discussions in Louisiana, 2022Mesoscale Discussions in Texas, 2022Mesoscale Discussions in Arkansas, 2022Every mesoscale discussion in 2022
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.