Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 1, NWS Shreveport, LA

March 17, 1987Bowie County, Cass County, Texas

NWS Shreveport, LA issued this flash flood warning at Mar 17, 1987, 7:30 AM CST for Bowie County, Cass County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Mar 17, 1987, 7:30 AM CST (13:30 UTC)
Expired: Mar 17, 1987, 10:30 AM CST
In force: 3 hr
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Bowie County, TX, Cass County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Longview/Gregg, TX (KGGG), launched 12:00Z, 1.5 hours before the alert went out and 103 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: 376 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 386 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.5

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.

In the hours before

Special weather statement, Mar 17, 1:36 AM CST, 5 hours 54 minutes before

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Special weather statement, Mar 17, 2:38 AM CST, 4 hours 52 minutes before

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<head>
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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      <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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Special weather statement, Mar 17, 3:40 AM CST, 3 hours 50 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
Mar 16, 10:50 PM CST	Severe Thunderstorm Warning	SHV	Caddo	80 min
Mar 16, 11:10 PM CST	Severe Thunderstorm Warning	SHV	De Soto	75 min
Mar 17, 8:00 AM CST	Severe Thunderstorm Warning	SHV	De Soto, Red River	75 min
Mar 17, 10:10 AM CST	Severe Thunderstorm Warning	SHV	Jackson, Winn	70 min
Mar 17, 11:20 AM CST	Severe Thunderstorm Warning	SHV	Madison, Tensas	70 min
Mar 16, 8:55 PM CST	Severe Thunderstorm Warning	SHV	Harrison, Marion	65 min
Mar 16, 8:55 PM CST	Severe Thunderstorm Warning	SHV	Cass	65 min
Mar 16, 10:20 PM CST	Severe Thunderstorm Warning	SHV	Gregg	70 min
Mar 16, 10:20 PM CST	Severe Thunderstorm Warning	SHV	Cass	70 min
Mar 17, 6:10 AM CST	Severe Thunderstorm Warning	SHV	Rusk	50 min
Mar 17, 6:55 AM CST	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk	80 min
Mar 17, 6:55 AM CST	Severe Thunderstorm Warning	SHV	Gregg	80 min

Nearby

Flash Flood Warnings in Texas, 1987 Every flash flood warning in 1987

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.