Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 231, NWS Fort Worth, TX

August 17, 2014McLennan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 17, 2014, 2:18 PM CDT for McLennan County, Texas. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 17, 2014, 2:18 PM CDT (19:18 UTC)
Expired
Aug 17, 2014, 3:15 PM CDT
In force
57 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

County McLennan County, TX

The radar

The Ft Hood radar (KGRK), 94 km from the middle of the area, began a volume at 19:21 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.3 hours before the alert went out and 142 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, Fort Worth, TX at 12:00Z on 2014-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3103 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, Fort Worth, TX at 12:00Z on 2014-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 square meters per square second.1939Sfc1 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
3103 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.8

Open this sounding in Storm Lab

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 12:28 PM CDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 17, 12:28 PM CDT, 1 hour 50 minutes before
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Hazardous weather outlook, Aug 17, 12:29 PM CDT, 1 hour 49 minutes before
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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>
      <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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In the hours before

Local storm report, Aug 17, 11:04 AM CDT, 3 hours 14 minutes before
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<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.
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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 16, 7:15 PM CDTAreal Flood AdvisoryFWDDelta, Hopkins, Lamar2 hr
Aug 17, 5:08 AM CDTAreal Flood AdvisoryFWDDenton, Wise97 min
Aug 17, 5:53 AM CDTSpecial Weather StatementFWDCollin37 min
Aug 17, 6:09 AM CDTSpecial Weather StatementFWDCollin36 min
Aug 17, 6:25 AM CDTSevere Thunderstorm WarningFWDCollin36 min
Aug 17, 6:50 AM CDTAreal Flood AdvisoryFWDCollin55 min
Aug 17, 6:57 AM CDTFlash Flood WarningFWDCollin2 hr
Aug 17, 7:16 AM CDTSpecial Weather StatementFWDDallas59 min
Aug 17, 8:54 AM CDTAreal Flood AdvisoryFWDDenton2 hr
Aug 17, 9:01 AM CDTAreal Flood AdvisoryFWDDallas3 hr
Aug 17, 9:13 AM CDTFlash Flood WarningFWDDallas, Denton2 hr
Aug 17, 9:30 AM CDTFlash Flood WarningFWDEllis2 hr
Aug 17, 10:23 AM CDTAreal Flood AdvisoryFWDJohnson, Tarrant82 min
Aug 17, 2:52 PM CDTAreal Flood AdvisoryFWDMcLennan83 min
Aug 17, 4:51 PM CDTAreal Flood AdvisoryFWDBell, Coryell, Lampasas114 min

Nearby

Severe Thunderstorm Warnings in Texas, 2014Every severe thunderstorm warning in 2014

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.