Alert archive / Louisiana / Flash Flood Warnings in 2024

Flash Flood Warning 12, NWS Shreveport, LA

April 9, 2024Bossier Parish, Caddo Parish, Webster Parish, Louisiana; Columbia County, Lafayette County, Arkansas

NWS Shreveport, LA issued this flash flood warning at Apr 9, 2024, 7:09 AM CDT for Bossier Parish, Caddo Parish, Webster Parish, Louisiana; Columbia County, Lafayette County, Arkansas. It was in force for 3 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 9, 2024, 7:09 AM CDT (12:09 UTC)
Expired
Apr 9, 2024, 10:15 AM CDT
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Flood severity
None

Counties Columbia County, AR, Lafayette County, AR, Bossier Parish, LA, Caddo Parish, LA, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 56 km from the middle of the area, began a volume at 12:08 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

Shreveport, LA (KSHV), launched 12:00Z, 0.2 hours before the alert went out and 50 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2024-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2024-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2 J/kg
Mixed-layer CIN
-355 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 9, 7:02 AM CDT, 7 minutes earlier.

Area forecast discussion, Apr 9, 7:02 AM CDT, 7 minutes before
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Hazardous weather outlook, Apr 9, 3:37 AM CDT, 3 hours 32 minutes before
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</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.
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      <p id="message2">
        Please try again in a few minutes.
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      <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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In the hours before

Local storm report, Apr 9, 6:48 AM CDT, 21 minutes before
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<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>
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  <script src="index.js"></script>
</body>
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 8:08 PM CDTSpecial Weather StatementSHVGregg, Rusk, Smith, Upshur37 min
Apr 8, 8:57 PM CDTAreal Flood AdvisorySHVGregg, Harrison, Panola, Rusk, Smith, Upshur33 min
Apr 8, 8:59 PM CDTSpecial Weather StatementSHVHarrison, Marion46 min
Apr 8, 9:01 PM CDTRiver Flood WarningSHVAnderson, Cherokee, Houston42 days
Apr 8, 9:20 PM CDTFlood WatchSHVAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more52 hr
Apr 8, 9:30 PM CDTFlash Flood WarningSHVGregg, Harrison, Panola, Rusk, Smith, Upshur7 hr
Apr 8, 9:49 PM CDTSpecial Weather StatementSHVHarrison, Marion41 min
Apr 8, 10:05 PM CDTSpecial Weather StatementSHVRusk40 min
Apr 8, 10:28 PM CDTSpecial Weather StatementSHVSmith47 min
Apr 8, 10:43 PM CDTRiver Flood WarningSHVCass, Marion9 days
Apr 8, 10:46 PM CDTRiver Flood WarningSHVGregg, Harrison, Marion, Upshur7 days
Apr 8, 10:50 PM CDTRiver Flood WarningSHVAnderson, Cherokee, Houston13 hr
Apr 8, 10:58 PM CDTRiver Flood WarningSHVGregg13 hr
Apr 8, 11:01 PM CDTRiver Flood WarningSHVGregg, Smith, Upshur, Wood10 days
Apr 8, 11:01 PM CDTRiver Flood WarningSHVSmith, Upshur, Wood5 days
Apr 8, 11:01 PM CDTSpecial Weather StatementSHVHarrison, Marion44 min
Apr 8, 11:07 PM CDTRiver Flood WarningSHVFranklin, Morris, Red River, Titus4 days
Apr 8, 11:08 PM CDTRiver Flood WarningSHVFranklin, Morris, Titus5 days
Apr 8, 11:10 PM CDTFlash Flood WarningSHVSmith5 hr
Apr 9, 12:43 AM CDTAreal Flood AdvisorySHVPanola3 hr
Apr 9, 6:29 AM CDTFlash Flood WarningSHVCass, Cherokee, Gregg, Harrison, Marion, Panola and 2 more4 hr
Apr 9, 10:01 AM CDTAreal Flood AdvisorySHVPanola5 hr
Apr 9, 10:30 AM CDTAreal Flood WarningSHVCass, Cherokee, Gregg, Harrison, Marion, Panola and 2 more4 hr
Apr 9, 11:24 AM CDTSpecial Weather StatementSHVSmith51 min
Apr 9, 11:59 AM CDTRiver Flood WarningSHVNacogdoches, Rusk3 days
Apr 9, 12:00 PM CDTRiver Flood WarningSHVGregg, Rusk8 days
Apr 9, 12:01 PM CDTRiver Flood WarningSHVCherokee, Nacogdoches, Rusk, Smith4 days
Apr 9, 12:02 PM CDTRiver Flood WarningSHVGregg, Harrison, Panola, Rusk9 days
Apr 9, 1:53 PM CDTSpecial Weather StatementSHVCherokee37 min
Apr 9, 2:22 PM CDTAreal Flood WarningSHVCherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 2 more3 hr
Apr 9, 2:29 PM CDTSpecial Weather StatementSHVRusk31 min
Apr 9, 2:40 PM CDTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Panola, Rusk, Shelby33 min
Apr 9, 3:11 PM CDTSevere Thunderstorm WarningSHVNacogdoches, Panola, Rusk, Shelby49 min
Apr 9, 3:36 PM CDTFlash Flood WarningSHVCherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 2 more5 hr
Apr 9, 3:37 PM CDTSpecial Weather StatementSHVSan Augustine, Shelby23 min
Apr 9, 3:41 PM CDTFlash Flood WarningSHVHarrison, Panola10 hr
Apr 9, 3:52 PM CDTSevere Thunderstorm WarningSHVHarrison, Panola, Shelby38 min
Apr 9, 4:48 PM CDTFlash Flood WarningSHVAngelina, Nacogdoches, Sabine, San Augustine, Shelby9 hr
Apr 8, 9:11 PM CDTSpecial Weather StatementSHVCaddo49 min
Apr 8, 10:37 PM CDTRiver Flood WarningSHVClaiborne, Lincoln, Union13 hr
Apr 8, 10:37 PM CDTRiver Flood WarningSHVLincoln, Ouachita, Union6 days
Apr 8, 10:40 PM CDTRiver Flood WarningSHVWebster22 days
Apr 8, 10:40 PM CDTRiver Flood WarningSHVBienville, Bossier, Webster11 days
Apr 8, 10:40 PM CDTRiver Flood WarningSHVBienville, Bossier, Red River, Webster12 days
Apr 8, 10:52 PM CDTAreal Flood AdvisorySHVBienville, Claiborne, Lincoln, Webster5 hr
Apr 8, 11:45 PM CDTFlash Flood WarningSHVBienville, Caldwell, Jackson, Lincoln, Ouachita5 hr
Apr 9, 7:35 AM CDTSpecial Weather StatementSHVDe Soto, Red River40 min
Apr 9, 8:18 AM CDTSpecial Weather StatementSHVBienville, Lincoln42 min
Apr 9, 9:52 AM CDTSpecial Weather StatementSHVLincoln, Ouachita, Union38 min
Apr 9, 10:14 AM CDTAreal Flood AdvisorySHVBossier, Caddo, De Soto3 hr
Apr 9, 11:04 AM CDTRiver Flood WarningSHVCaddo, De Soto13 days
Apr 9, 11:28 AM CDTSpecial Weather StatementSHVUnion32 min
Apr 9, 4:35 PM CDTSpecial Weather StatementSHVBienville, Natchitoches, Red River, Sabine40 min
Apr 9, 5:18 PM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln, Natchitoches, Ouachita, Winn42 min
Apr 9, 5:47 PM CDTFlash Flood WarningSHVBienville, Caldwell, Claiborne, Jackson, Lincoln, Ouachita and 1 more5 hr
Apr 9, 5:52 PM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, Lincoln, Ouachita, Union, Winn38 min
Apr 9, 6:03 PM CDTSpecial Weather StatementSHVCaldwell, Winn42 min
Apr 9, 6:07 PM CDTRiver Flood WarningSHVCaddo5 days
Apr 9, 6:32 PM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, LaSalle, Ouachita, Winn43 min
Apr 9, 6:58 PM CDTAreal Flood AdvisorySHVBienville, Caldwell, Jackson, LaSalle, Natchitoches, Red River and 1 more3 hr
Apr 8, 7:12 PM CDTSevere Thunderstorm WarningSHVHempstead, Howard, Little River48 min
Apr 8, 10:54 PM CDTRiver Flood WarningSHVAshley, Union38 days

Nearby

Flash Flood Warnings in Louisiana, 2024Flash Flood Warnings in Arkansas, 2024Every flash flood warning in 2024

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.