Alert archive / Texas / Flash Flood Warnings in 2026

Flash Flood Warning 26, NWS Houston/Galveston, TX

June 20, 2026Brazoria County, Galveston County, Harris County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 20, 2026, 4:17 PM CDT for Brazoria County, Galveston County, Harris County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 20, 2026, 4:17 PM CDT (21:17 UTC)
Expired: Jun 20, 2026, 7:15 PM CDT
In force: 3 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

Counties Brazoria County, TX, Galveston County, TX, Harris County, TX

The radar

The Houston radar (KHGX), 13 km from the middle of the area, began a volume at 21:21 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.

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 Jun 20, 2:50 PM CDT, 1 hour 27 minutes earlier.

Area forecast discussion, Jun 20, 2:50 PM CDT, 1 hour 27 minutes before

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In the hours before

Special weather statement, Jun 20, 1:38 PM CDT, 2 hours 39 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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Special weather statement, Jun 20, 4:09 PM CDT, 8 minutes before

<!doctype html>
<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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 7:14 PM CDT	Areal Flood Advisory	HGX	Harris, Liberty	2 hr
Jun 20, 3:02 AM CDT	Areal Flood Advisory	HGX	Houston	118 min
Jun 20, 4:05 AM CDT	Flash Flood Warning	HGX	Houston	3 hr
Jun 20, 5:13 AM CDT	Areal Flood Advisory	HGX	Houston	81 min
Jun 20, 6:31 AM CDT	Flash Flood Warning	HGX	Houston	5 hr
Jun 20, 7:19 AM CDT	Areal Flood Advisory	HGX	Grimes, Houston, Madison, Trinity, Walker	3 hr
Jun 20, 11:58 AM CDT	Areal Flood Advisory	HGX	Brazoria, Galveston, Harris	62 min
Jun 20, 12:43 PM CDT	Flash Flood Warning	HGX	Galveston, Harris	2 hr
Jun 20, 1:38 PM CDT	Special Weather Statement	HGX	Waller	37 min
Jun 20, 2:17 PM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Galveston, Harris, Matagorda, Wharton	3 hr
Jun 20, 3:12 PM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend	3 hr
Jun 20, 4:08 PM CDT	Special Marine Warning	HGX		67 min
Jun 20, 4:09 PM CDT	Special Weather Statement	HGX	Chambers, Galveston	51 min
Jun 20, 4:34 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Galveston, Harris	41 min

Nearby

Flash Flood Warnings in Texas, 2026 Every flash flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.