Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 15, NWS Houston/Galveston, TX

May 28, 1999Colorado County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at May 28, 1999, 1:35 AM CDT for Colorado 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: May 28, 1999, 1:35 AM CDT (06:35 UTC)
Expired: May 28, 1999, 4:30 AM CDT
In force: 3 hr
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

County Colorado County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.6 hours before the alert went out and 225 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: 3478 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 664 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.7

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 Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at May 27, 9:37 PM CDT, 3 hours 58 minutes earlier.

Area forecast discussion, May 27, 9:37 PM CDT, 3 hours 58 minutes before

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In the hours before

Special weather statement, May 27, 9:22 PM CDT, 4 hours 13 minutes before

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Local storm report, May 27, 10:52 PM CDT, 2 hours 43 minutes before

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Local storm report, May 27, 10:52 PM CDT, 2 hours 43 minutes before

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<head>
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  <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.
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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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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 7:00 PM CDT	Severe Thunderstorm Warning	HGX	Harris	60 min
May 27, 7:32 PM CDT	Tornado Warning	HGX	Montgomery	43 min
May 27, 8:00 PM CDT	Severe Thunderstorm Warning	HGX	Harris	60 min
May 27, 8:15 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery	45 min
May 27, 9:00 PM CDT	Severe Thunderstorm Warning	HGX	Harris	45 min
May 27, 10:00 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	60 min
May 28, 4:00 AM CDT	Severe Thunderstorm Warning	HGX	Colorado, Wharton	45 min
May 28, 5:40 AM CDT	Severe Thunderstorm Warning	HGX	Wharton	50 min
May 28, 5:58 PM CDT	Severe Thunderstorm Warning	HGX	Waller	32 min
May 28, 6:14 PM CDT	Severe Thunderstorm Warning	HGX	Jackson	46 min
May 28, 6:35 PM CDT	Flash Flood Warning	HGX	Jackson	115 min

Nearby

Flash Flood Warnings in Texas, 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.