Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 49, NWS Lubbock, TX

May 9, 1999Crosby County, Floyd County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at May 9, 1999, 3:10 PM CDT for Crosby County, Floyd County, Texas. It was in force for 65 min. 2 reports 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
May 9, 1999, 3:10 PM CDT (20:10 UTC)
Expired
May 9, 1999, 4:15 PM CDT
In force
65 min
Issued by
NWS Lubbock, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Crosby County, TX, Floyd County, TX

The radar

The Lubbock radar (KLBB), 52 km from the middle of the area, began a volume at 20:09 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

TimeReportWhereRemark
May 9, 3:20 PM CDTHail 1Lorenzo, TX
May 9, 3:30 PM CDTThunderstorm Wind 78Aiken, TXStrong thunderstorm wind blew the roof off a module shed, destroyed a barn, and blew down 30 power poles on Farm-to-Market Road 788.

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.

IssuedProductOfficeLasted
May 9, 2:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.2 hours before the alert went out and 158 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, Amarillo Airport, TX at 12:00Z on 1999-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1086 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, Amarillo Airport, TX at 12:00Z on 1999-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 square meters per square second.193958Sfc1 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
1086 J/kg
Mixed-layer CIN
-314 J/kg
Mixed-layer LCL
1716 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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 severe thunderstorm 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, May 9, 11:30 AM CDT, 3 hours 40 minutes before
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Special weather statement, May 9, 11:30 AM CDT, 3 hours 40 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 Lubbock, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 2:25 PM CDTSevere Thunderstorm WarningLUBLynn, Terry50 min
May 9, 2:29 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock46 min
May 9, 2:41 PM CDTSevere Thunderstorm WarningLUBLubbock49 min
May 9, 2:44 PM CDTSevere Thunderstorm WarningLUBHale61 min
May 9, 2:59 PM CDTSevere Thunderstorm WarningLUBSwisher61 min
May 9, 4:10 PM CDTSevere Thunderstorm WarningLUBLynn50 min
May 9, 4:32 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock43 min
May 9, 4:59 PM CDTSevere Thunderstorm WarningLUBLynn31 min
May 9, 5:07 PM CDTTornado WarningLUBLynn53 min
May 9, 5:19 PM CDTSevere Thunderstorm WarningLUBFloyd41 min
May 9, 5:23 PM CDTTornado WarningLUBGarza52 min
May 9, 5:51 PM CDTSevere Thunderstorm WarningLUBMotley39 min
May 9, 5:54 PM CDTSevere Thunderstorm WarningLUBCrosby51 min
May 9, 6:12 PM CDTTornado WarningLUBGarza, Kent63 min
May 9, 6:29 PM CDTFlash Flood WarningLUBLubbock2 hr
May 9, 6:33 PM CDTTornado WarningLUBGarza57 min
May 9, 6:44 PM CDTSevere Thunderstorm WarningLUBCrosby46 min
May 9, 6:53 PM CDTSevere Thunderstorm WarningLUBChildress37 min
May 9, 6:56 PM CDTSevere Thunderstorm WarningLUBDickens49 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999Every 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.