Alert archive / Texas / Flash Flood Warnings in 2022

Flash Flood Warning 11, NWS Houston/Galveston, TX

August 24, 2022Colorado County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Aug 24, 2022, 5:25 PM CDT for Colorado County, Texas. It was in force for 117 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 24, 2022, 5:25 PM CDT (22:25 UTC)
Expired: Aug 24, 2022, 7:22 PM CDT
In force: 117 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

County Colorado County, TX

The radar

The Houston radar (KHGX), 141 km from the middle of the area, began a volume at 22:29 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

Corpus Christi, TX (KCRP), launched 12:00Z, 10.4 hours before the alert went out and 225 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: 1175 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 778 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 24, 3:55 PM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, Aug 24, 3:55 PM CDT, 1 hour 30 minutes before

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In the hours before

Local storm report, Aug 24, 11:58 AM CDT, 5 hours 27 minutes before

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    <section class="card" role="status" aria-live="polite">
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Special weather statement, Aug 24, 1:16 PM CDT, 4 hours 9 minutes before

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  <title>Service Notice</title>
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<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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      <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
Aug 24, 6:21 AM CDT	Areal Flood Advisory	HGX	Austin, Colorado	114 min
Aug 24, 7:18 AM CDT	Areal Flood Warning	HGX	Austin, Colorado	7 min
Aug 24, 7:25 AM CDT	Flash Flood Warning	HGX	Austin, Colorado	110 min
Aug 24, 9:10 AM CDT	Flash Flood Warning	HGX	Austin, Colorado	81 min
Aug 24, 10:26 AM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Matagorda, Wharton	94 min
Aug 24, 10:49 AM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend	30 min
Aug 24, 1:16 PM CDT	Special Weather Statement	HGX	Liberty	59 min
Aug 24, 2:20 PM CDT	Areal Flood Advisory	HGX	Harris, Montgomery	55 min
Aug 24, 3:42 PM CDT	Areal Flood Advisory	HGX	Harris, Montgomery, Waller	2 hr
Aug 24, 5:08 PM CDT	Areal Flood Advisory	HGX	Austin, Colorado	112 min

Nearby

Flash Flood Warnings in Texas, 2022 Every flash flood warning in 2022

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.