Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 53, NWS Houston/Galveston, TX

April 25, 1997Harris County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 25, 1997, 9:35 AM CDT for Harris County, Texas. It was in force for 55 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: Apr 25, 1997, 9:35 AM CDT (14:35 UTC)
Expired: Apr 25, 1997, 10:30 AM CDT
In force: 55 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

County Harris County, TX

The radar

The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 14:38 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
Apr 25, 9:45 AM CDT	Hail 1	Katy, 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 nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 2.6 hours before the alert went out and 213 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1388 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 472 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.4

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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 25, 9:19 AM CDT, 16 minutes earlier.

Area forecast discussion, Apr 25, 9:19 AM CDT, 16 minutes before

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In the hours before

Special weather statement, Apr 25, 4:40 AM CDT, 4 hours 55 minutes before

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  <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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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 25, 8:24 AM CDT	Severe Thunderstorm Warning	HGX	Wharton	66 min
Apr 25, 8:47 AM CDT	Severe Thunderstorm Warning	HGX	Fort Bend	58 min
Apr 25, 9:05 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Waller	55 min
Apr 25, 9:56 AM CDT	Severe Thunderstorm Warning	HGX	Waller	64 min
Apr 25, 10:18 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes, Washington	57 min
Apr 25, 10:48 AM CDT	Severe Thunderstorm Warning	HGX	Montgomery	57 min
Apr 25, 11:16 AM CDT	Severe Thunderstorm Warning	HGX	Harris	59 min
Apr 25, 11:25 AM CDT	Severe Thunderstorm Warning	HGX	Walker	65 min
Apr 25, 12:01 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Liberty	59 min
Apr 25, 3:17 PM CDT	Severe Thunderstorm Warning	HGX	San Jacinto	43 min
Apr 25, 3:25 PM CDT	Severe Thunderstorm Warning	HGX	Polk, Trinity	65 min
Apr 25, 3:54 PM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend, Harris	4 hr
Apr 25, 3:54 PM CDT	Flash Flood Warning	HGX	Galveston	4 hr
Apr 25, 4:38 PM CDT	Tornado Warning	HGX	Grimes	67 min
Apr 25, 5:48 PM CDT	Flash Flood Warning	HGX	Waller	4 hr
Apr 25, 5:56 PM CDT	Severe Thunderstorm Warning	HGX	Polk	64 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997 Every severe thunderstorm warning in 1997

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.