Alert archive / Arkansas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 18, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Feb 9, 2020, 9:59 PM CST for Columbia County, Lafayette County, Nevada County, Arkansas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 9, 2020, 9:59 PM CST (03:59 UTC)
- Expired
- Feb 9, 2020, 10:30 PM CST
- In force
- 31 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Columbia County, AR, Lafayette County, AR, Nevada County, AR
The radar
The Shreveport radar (KSHV), 111 km from the middle of the area, began a volume at 04:02 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
Jackson, MS (KJAN), launched 00:00Z, 4.0 hours before the alert went out and 330 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
- 1619 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 9, 8:35 PM CST, 1 hour 24 minutes earlier.
Area forecast discussion, Feb 9, 8:35 PM CST, 1 hour 24 minutes before
<!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>Hazardous weather outlook, Feb 9, 11:49 AM CST, 10 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 1149 AM CST Sun Feb 9 2020 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-101800- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 1149 AM CST Sun Feb 9 2020 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...This Afternoon and Tonight... A cold front will shift southeast across the region late tonight through Monday, bringing showers to the area this afternoon and thunderstorms this evening into the overnight hours. A few of the storms in East Texas, Deep East Texas, northwest Louisiana, southwestern Arkansas, and southeastern Oklahoma may become strong to severe with large hail, damaging winds, and an isolated tornado possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday... A frontal boundary will stall in the region and a series of disturbances will cross the area Monday through Wednesday. This will lead to several rounds of showers and thunderstorms with localized heavy rainfall at times. On Monday afternoon, an isolated severe thunderstorm with large hail and damaging winds cannot be ruled out across portions of Deep East Texas, central Louisiana and the ArkLaMiss. On Wednesday, severe thunderstorms will be possible for central Louisiana and the ArkLaMiss with large hail, damaging winds, and tornadoes possible. Total rainfall amounts for the event will range from 4 to 6 inches along an axis from Deep East Texas across northwest Louisiana and into the ArkLaMiss. Elsewhere, 2 to 4 inches of rain will be possible. This could lead to flash flooding, particularly in flood prone areas. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters may be needed this evening into Wednesday.
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 5:09 AM CST | Special Weather Statement | SHV | Panola | 36 min |
| Feb 10, 7:15 AM CST | Special Weather Statement | SHV | Nacogdoches | 30 min |
| Feb 10, 9:58 AM CST | River Flood Warning | SHV | Franklin, Morris, Red River, Titus | 6 days |
| Feb 10, 9:58 AM CST | River Flood Warning | SHV | Franklin, Morris, Titus | 7 days |
| Feb 10, 10:00 AM CST | River Flood Warning | SHV | Cass, Marion | 12 days |
| Feb 10, 1:48 AM CST | Special Weather Statement | SHV | Red River | 27 min |
| Feb 10, 2:13 AM CST | Special Weather Statement | SHV | Bienville | 47 min |
| Feb 10, 2:47 AM CST | Special Weather Statement | SHV | Lincoln, Union | 28 min |
| Feb 10, 9:53 AM CST | River Flood Warning | SHV | Bienville, Bossier, Red River, Webster | 21 days |
| Feb 10, 9:53 AM CST | River Flood Warning | SHV | Bienville, Bossier, Webster | 21 days |
| Feb 10, 10:28 AM CST | Areal Flood Advisory | SHV | Bossier, Caddo | 2 hr |
| Feb 10, 10:43 AM CST | River Flood Warning | SHV | Caldwell, Grant, LaSalle, Winn | 19 days |
| Feb 10, 12:53 PM CST | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 3 hr |
| Feb 10, 1:29 PM CST | Areal Flood Advisory | SHV | Jackson, Lincoln, Ouachita, Union | 3 hr |
| Feb 10, 1:44 PM CST | Flash Flood Warning | SHV | Bienville, Bossier, Claiborne, Webster | 3 hr |
| Feb 10, 2:19 PM CST | Flash Flood Warning | SHV | Claiborne, Jackson, Lincoln, Union | 3 hr |
| Feb 9, 9:27 PM CST | Severe Thunderstorm Warning | SHV | Lafayette, Miller | 17 min |
| Feb 9, 11:41 PM CST | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Nevada, Sevier | 28 min |
| Feb 10, 12:58 PM CST | Special Weather Statement | SHV | Columbia | 47 min |
| Feb 10, 4:11 PM CST | Special Weather Statement | SHV | Lafayette, Nevada | 49 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2020Every severe thunderstorm warning in 2020
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.