Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 19, NWS Lake Charles, LA

April 3, 1999Tyler County, Texas

NWS Lake Charles, LA issued this flash flood warning at Apr 3, 1999, 6:51 PM CST for Tyler County, Texas. 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 3, 1999, 6:51 PM CST (00:51 UTC)
Expired
Apr 3, 1999, 9:50 PM CST
In force
3 hr
Issued by
NWS Lake Charles, LA
Area
Whole counties

County Tyler County, TX

The radar

The Lake Charles radar (KLCH), 132 km from the middle of the area, began a volume at 00:51 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, 0.9 hours before the alert went out and 134 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, Lake Charles Mun, LA at 00:00Z on 1999-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 728 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, Lake Charles Mun, LA at 00:00Z on 1999-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.19395878Sfc1 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
728 J/kg
Mixed-layer CIN
-290 J/kg
Mixed-layer LCL
1318 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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 Apr 3, 2:15 PM CST, 4 hours 36 minutes earlier.

Area forecast discussion, Apr 3, 2:15 PM CST, 4 hours 36 minutes before
<!doctype html>
<html lang="en">
<head>
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<body>
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    <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>
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        Please try again in a few minutes.
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      <p class="small" id="detail">
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In the hours before

Local storm report, Apr 3, 6:32 PM CST, 19 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 Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 1:23 AM CSTFlash Flood WarningLCHRapides, Vernon3 hr
Apr 4, 1:23 AM CSTFlash Flood WarningLCHBeauregard3 hr
Apr 4, 4:40 AM CDTSevere Thunderstorm WarningLCHRapides65 min
Apr 4, 7:58 AM CDTFlash Flood WarningLCHAllen, Beauregard, Rapides, Vernon2 hr
Apr 4, 7:58 AM CDTFlash Flood WarningLCHAvoyelles, Evangeline2 hr
Apr 4, 10:30 AM CDTFlash Flood WarningLCHBeauregard4 hr
Apr 4, 3:59 PM CDTSevere Thunderstorm WarningLCHVernon61 min
Apr 4, 4:05 PM CDTTornado WarningLCHVernon55 min
Apr 4, 5:38 PM CDTSevere Thunderstorm WarningLCHRapides47 min
Apr 4, 1:23 AM CSTFlash Flood WarningLCHJasper, Newton, Tyler3 hr
Apr 4, 7:58 AM CDTFlash Flood WarningLCHJasper2 hr
Apr 4, 10:30 AM CDTFlash Flood WarningLCHTyler4 hr

Nearby

Flash Flood Warnings in Texas, 1999Every 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.