Alert archive / Louisiana / Special Weather Statements in 2023

Special Weather Statement, NWS Shreveport, LA

February 8, 2023LaSalle Parish, Louisiana

NWS Shreveport, LA issued this special weather statement at Feb 8, 2023, 4:21 PM CST for LaSalle Parish, Louisiana. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Feb 8, 2023, 4:21 PM CST (22:21 UTC)
Expired: Feb 8, 2023, 5:00 PM CST
In force: 39 min
Issued by: NWS Shreveport, LA
Hail: 0.50 in
Wind: 40

County LaSalle Parish, LA

The radar

The Ft Polk radar (KPOE), 121 km from the middle of the area, began a volume at 22:23 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, 10.4 hours before the alert went out and 225 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 792 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Feb 7, 5:57 PM CST, 22 hours 24 minutes earlier.

Area forecast discussion, Feb 7, 5:57 PM CST, 22 hours 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.
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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 8, 2:59 AM CST	Areal Flood Advisory	SHV	Red River	4 hr
Feb 8, 3:08 AM CST	Flood Watch	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	17 hr
Feb 8, 9:49 AM CST	Areal Flood Advisory	SHV	Bowie, Cass, Marion	3 hr
Feb 8, 10:47 AM CST	Areal Flood Advisory	SHV	Bowie	5 hr
Feb 8, 12:49 PM CST	Areal Flood Advisory	SHV	Bowie, Cass, Marion	3 hr
Feb 8, 3:09 PM CST	River Flood Warning	SHV	Franklin, Morris, Red River, Titus	4 days
Feb 8, 3:10 PM CST	River Flood Warning	SHV	Smith, Wood	16 days
Feb 8, 3:46 PM CST	River Flood Warning	SHV	Franklin, Morris, Titus	6 days
Feb 8, 3:37 PM CST	Special Weather Statement	SHV	LaSalle	38 min
Feb 8, 4:03 PM CST	Special Weather Statement	SHV	Natchitoches	42 min
Feb 8, 5:03 PM CST	Areal Flood Advisory	SHV	Grant, LaSalle	3 hr
Feb 8, 5:23 PM CST	Special Weather Statement	SHV	Caldwell, LaSalle	52 min
Feb 8, 10:24 AM CST	Areal Flood Advisory	SHV	Howard, Little River, Sevier	5 hr
Feb 8, 10:41 AM CST	Flash Flood Warning Considerable damage threat	SHV	Howard, Little River, Sevier	5 hr
Feb 8, 1:46 PM CST	River Flood Warning	SHV	Howard, Little River, Sevier	69 hr
Feb 8, 3:35 PM CST	Areal Flood Warning	SHV	Hempstead, Howard, Little River, Sevier	3 hr

Nearby

Special Weather Statements in Louisiana, 2023 Every special weather statement in 2023

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.