Alert archive / Louisiana / Flash Flood Warnings in 1999

Flash Flood Warning 14, NWS Lake Charles, LA

March 12, 1999Allen Parish, Beauregard Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Mar 12, 1999, 5:09 AM CST for Allen Parish, Beauregard Parish, Louisiana. It was in force for 111 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: Mar 12, 1999, 5:09 AM CST (11:09 UTC)
Expired: Mar 12, 1999, 7:00 AM CST
In force: 111 min
Issued by: NWS Lake Charles, LA
Area: Whole counties

Counties Allen Parish, LA, Beauregard Parish, LA

The radar

The Ft Polk radar (KPOE), 57 km from the middle of the area, began a volume at 11:10 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 00:00Z, 11.2 hours before the alert went out and 60 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: 292 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 91 kt
0-1 km storm-relative helicity: 610 m²/s²
0-3 km storm-relative helicity: 656 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Lake Charles, LA wrote its last area forecast discussion before this flash flood warning went out at Mar 12, 2:22 AM CST, 2 hours 47 minutes earlier.

Area forecast discussion, Mar 12, 2:22 AM CST, 2 hours 47 minutes before

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In the hours before

Special weather statement, Mar 12, 3:52 AM CST, 1 hour 17 minutes before

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<body>
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Special weather statement, Mar 12, 3:52 AM CST, 1 hour 17 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 Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 11, 6:42 PM CST	Severe Thunderstorm Warning	LCH	Iberia, St. Mary	48 min
Mar 11, 9:36 PM CST	Flash Flood Warning	LCH	Vermilion	2 hr
Mar 12, 6:22 AM CST	Severe Thunderstorm Warning	LCH	Allen	48 min

Nearby

Flash Flood Warnings in Louisiana, 1999 Every flash flood warning in 1999

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.