Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 149, NWS Amarillo, TX

June 30, 1999Lipscomb County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 30, 1999, 4:54 AM CDT for Lipscomb County, Texas. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 30, 1999, 4:54 AM CDT (09:54 UTC)
Expired: Jun 30, 1999, 6:00 AM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Lipscomb County, TX

The radar

The Dodge City radar (KDDC), 167 km from the middle of the area, began a volume at 10:11 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.

What was reported inside it

Time	Report	Where	Remark
Jun 30, 5:20 AM CDT	Hail 1.75	Lipscomb, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 29, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 9.9 hours before the alert went out and 169 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: 1384 J/kg
Mixed-layer CIN: -215 J/kg
Mixed-layer LCL: 1247 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 2:45 AM CDT, 2 hours 9 minutes earlier.

Area forecast discussion, Jun 30, 2:45 AM CDT, 2 hours 9 minutes before

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In the hours before

Local storm report, Jun 30, 1:38 AM CDT, 3 hours 16 minutes before

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Local storm report, Jun 30, 1:38 AM CDT, 3 hours 16 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.
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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 Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:27 PM CDT	Tornado Warning	AMA	Hutchinson	63 min
Jun 29, 7:40 PM CDT	Tornado Warning	AMA	Carson	50 min
Jun 29, 7:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	59 min
Jun 29, 8:21 PM CDT	Tornado Warning	AMA	Hutchinson	69 min
Jun 29, 8:30 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Donley	60 min
Jun 29, 9:22 PM CDT	Tornado Warning	AMA	Carson, Hutchinson	68 min
Jun 29, 9:35 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	55 min
Jun 29, 9:42 PM CDT	Severe Thunderstorm Warning	AMA	Gray	63 min
Jun 29, 10:31 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	44 min
Jun 30, 12:11 AM CDT	Flash Flood Warning	AMA	Hansford	2 hr
Jun 30, 12:25 AM CDT	Severe Thunderstorm Warning	AMA	Hansford	65 min
Jun 30, 12:52 AM CDT	Tornado Warning	AMA	Hansford	23 min
Jun 30, 3:06 AM CDT	Severe Thunderstorm Warning	AMA	Hansford, Ochiltree	54 min
Jun 30, 3:59 AM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	46 min
Jun 30, 2:10 AM CDT	Severe Thunderstorm Warning	AMA	Texas	65 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.