Alert archive / Louisiana / Flash Flood Warnings in 2025

Flash Flood Warning 34, NWS Shreveport, LA

April 30, 2025Bossier Parish, Caddo Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Apr 30, 2025, 7:32 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 30, 2025, 7:32 PM CDT (00:32 UTC)
Expired: May 1, 2025, 1:30 AM CDT
In force: 6 hr
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: None

Counties Bossier Parish, LA, Caddo Parish, LA

The radar

The Shreveport radar (KSHV), 22 km from the middle of the area, began a volume at 00:37 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

Fort Worth, TX (KFWD), launched 00:00Z, 0.5 hours before the alert went out and 333 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 926 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Apr 30, 7:24 PM CDT, 8 minutes earlier.

Area forecast discussion, Apr 30, 7:24 PM CDT, 8 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>

In the hours before

Special weather statement, Apr 30, 5:59 PM CDT, 1 hour 33 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>

Local storm report, Apr 30, 6:07 PM CDT, 1 hour 25 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>

Local storm report, Apr 30, 6:14 PM CDT, 1 hour 18 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>

Special weather statement, Apr 30, 6:14 PM CDT, 1 hour 18 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>

Local storm report, Apr 30, 6:31 PM CDT, 1 hour 1 minute 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>

Special weather statement, Apr 30, 7:04 PM CDT, 28 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:16 PM CDT	Special Weather Statement	SHV	Cherokee	44 min
Apr 30, 8:20 PM CDT	River Flood Warning	SHV	Gregg, Harrison, Marion, Upshur	38 hr
Apr 30, 8:23 PM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston	19 days
Apr 30, 9:38 PM CDT	Special Weather Statement	SHV	Rusk	37 min
Apr 30, 10:23 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches	36 min
Apr 30, 10:55 PM CDT	Areal Flood Warning	SHV	Gregg, Harrison, Marion, Smith, Upshur, Wood	6 hr
Apr 30, 11:11 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Cherokee, Nacogdoches	34 min
May 1, 1:30 AM CDT	Areal Flood Warning	SHV	Cass, Cherokee, Gregg, Harrison, Marion, Panola and 2 more	4 hr
May 1, 9:53 AM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston, Trinity	19 days
May 1, 9:59 AM CDT	River Flood Warning	SHV	Cherokee, Nacogdoches, Rusk, Smith	72 hr
May 1, 10:26 AM CDT	River Flood Warning	SHV	Cass, Marion	23 hr
May 1, 3:48 PM CDT	Special Weather Statement	SHV	San Augustine	42 min
May 1, 4:30 PM CDT	Special Weather Statement	SHV	Shelby	45 min
May 1, 5:02 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	58 min
May 1, 6:00 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	60 min
May 1, 6:34 PM CDT	Areal Flood Advisory	SHV	San Augustine	3 hr
May 1, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	63 min
Apr 30, 7:04 PM CDT	Special Weather Statement	SHV	Bossier, Caddo, De Soto, Red River, Webster	41 min
Apr 30, 10:47 PM CDT	Flash Flood Warning Considerable damage threat	SHV	Bienville, Bossier, Claiborne, Webster	4 hr
May 1, 1:08 AM CDT	Special Weather Statement	SHV	Grant, Natchitoches, Winn	52 min
May 1, 1:16 AM CDT	Areal Flood Warning	SHV	Bossier, Caddo	4 hr
May 1, 1:21 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	39 min
May 1, 1:58 AM CDT	Special Weather Statement	SHV	Caldwell, Grant, LaSalle	47 min
May 1, 8:34 AM CDT	Special Weather Statement	SHV	Bossier	26 min
May 1, 11:13 AM CDT	River Flood Warning	SHV	Webster	15 days
May 1, 11:15 AM CDT	River Flood Warning	SHV	Bossier, Webster	6 days
May 1, 5:35 PM CDT	Special Weather Statement	SHV	De Soto	55 min
May 1, 6:14 PM CDT	Special Weather Statement	SHV	De Soto	46 min
May 1, 6:44 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	61 min

Nearby

Flash Flood Warnings in Louisiana, 2025 Every flash flood warning in 2025

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.