Alert archive / Louisiana / Areal Flood Warnings in 2011

Areal Flood Warning 9, NWS Lake Charles, LA

May 26, 2011Avoyelles Parish, Louisiana

NWS Lake Charles, LA issued this areal flood warning at May 26, 2011, 1:53 PM CDT for Avoyelles Parish, Louisiana. It was in force for 5 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 26, 2011, 1:53 PM CDT (18:53 UTC)
Expired: May 31, 2011, 2:00 PM CDT
In force: 5 days
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

County Avoyelles Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 6.9 hours before the alert went out and 228 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: 1916 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 14.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before this areal flood warning went out at May 26, 12:11 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, May 26, 12:11 PM CDT, 1 hour 42 minutes before

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Hazardous weather outlook, May 26, 5:02 AM CDT, 8 hours 51 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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:55 PM CDT	Special Weather Statement	LCH	Vernon	65 min
May 25, 8:22 PM CDT	Severe Thunderstorm Warning	LCH	Vernon	38 min
May 25, 10:50 PM CDT	Special Weather Statement	LCH	Rapides	55 min
May 25, 11:15 PM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	60 min
May 25, 11:30 PM CDT	Special Weather Statement	LCH	Rapides	60 min
May 26, 12:12 AM CDT	Severe Thunderstorm Warning	LCH	Avoyelles, Rapides	63 min
May 26, 12:47 AM CDT	Special Weather Statement	LCH	Jefferson	58 min
May 26, 2:37 AM CDT	Special Weather Statement	LCH	Jefferson	53 min

Nearby

Areal Flood Warnings in Louisiana, 2011 Every areal flood warning in 2011

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.