Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Houston/Galveston, TX

May 10, 2021Polk County, Texas

NWS Houston/Galveston, TX issued this special weather statement at May 10, 2021, 5:28 PM CDT for Polk County, Texas. It was in force for 32 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: May 10, 2021, 5:28 PM CDT (22:28 UTC)
Expired: May 10, 2021, 6:00 PM CDT
In force: 32 min
Issued by: NWS Houston/Galveston, TX

County Polk County, TX

The radar

The Houston radar (KHGX), 150 km from the middle of the area, began a volume at 22:32 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.5 hours before the alert went out and 201 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: 1821 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.6

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 May 10, 3:27 PM CDT, 2 hours 1 minute earlier.

Area forecast discussion, May 10, 3:27 PM CDT, 2 hours 1 minute before

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In the hours before

Special weather statement, May 10, 5:28 PM CDT, 0 minutes before

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<head>
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  <title>Service Notice</title>
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</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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        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 9, 7:20 PM CDT	Special Weather Statement	HGX	Houston, Trinity	55 min
May 9, 8:00 PM CDT	Severe Thunderstorm Warning	HGX	Polk, Trinity	45 min
May 9, 9:47 PM CDT	Areal Flood Advisory	HGX	Houston, Trinity	58 min
May 9, 10:59 PM CDT	Areal Flood Advisory	HGX	Houston	2 hr
May 10, 6:01 PM CDT	Special Weather Statement	HGX	Polk	44 min
May 10, 6:09 PM CDT	Areal Flood Advisory	HGX	Polk, Trinity	2 hr
May 10, 6:32 PM CDT	Areal Flood Advisory	HGX	Polk	58 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.