Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Houston/Galveston, TX

December 11, 2021Houston County, Texas

NWS Houston/Galveston, TX issued this special weather statement at Dec 11, 2021, 12:28 AM CST for Houston County, Texas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 11, 2021, 12:28 AM CST (06:28 UTC)
Expired: Dec 11, 2021, 1:30 AM CST
In force: 62 min
Issued by: NWS Houston/Galveston, TX
Hail: 0.25 in
Wind: 30

County Houston County, TX

The radar

The Ft Hood radar (KGRK), 184 km from the middle of the area, began a volume at 06:31 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

Shreveport, LA (KSHV), launched 00:00Z, 6.5 hours before the alert went out and 214 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: 1338 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1005 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 10, 11:33 PM CST, 55 minutes earlier.

Area forecast discussion, Dec 10, 11:33 PM CST, 55 minutes before

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In the hours before

Special weather statement, Dec 11, 12:28 AM CST, 0 minutes before

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<html lang="en">
<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.
      </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 Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 11, 12:49 AM CST	Special Weather Statement	HGX	Brazos, Burleson, Madison	56 min
Dec 11, 1:40 AM CST	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Houston, Madison, Trinity and 2 more	65 min
Dec 11, 2:44 AM CST	Special Weather Statement	HGX	Washington	61 min
Dec 11, 2:44 AM CST	Wind Advisory	HGX	Brazoria, Galveston, Jackson, Matagorda	15 hr
Dec 11, 2:46 AM CST	Gale Warning	HGX		17 hr
Dec 11, 3:05 AM CST	Special Weather Statement	HGX	Montgomery, Polk, San Jacinto	55 min

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.