Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 11, NWS Houston/Galveston, TX

May 15, 2023Harris County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at May 15, 2023, 1:38 PM CDT for Harris County, Texas. It was in force for 2 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: May 15, 2023, 1:38 PM CDT (18:38 UTC)
Expired: May 15, 2023, 3:45 PM CDT
In force: 2 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

County Harris County, TX

The radar

The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 18:42 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 May 15, 6:08 AM CDT, 7 hours 30 minutes earlier.

Area forecast discussion, May 15, 6:08 AM CDT, 7 hours 30 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>

In the hours before

Special weather statement, May 15, 1:26 PM CDT, 12 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
May 14, 9:36 PM CDT	Areal Flood Warning	HGX	Harris, Montgomery, Waller	26 hr
May 14, 9:46 PM CDT	Areal Flood Warning	HGX	Walker	33 hr
May 15, 4:06 AM CDT	River Flood Warning	HGX	Austin, Colorado, Fort Bend, Wharton	4 days
May 15, 1:26 PM CDT	Special Weather Statement	HGX	Waller	34 min
May 15, 1:56 PM CDT	Areal Flood Advisory	HGX	Brazos	2 hr
May 15, 2:03 PM CDT	Areal Flood Advisory	HGX	Grimes, Houston, Madison, Walker	117 min
May 15, 2:08 PM CDT	Special Weather Statement	HGX	Washington	67 min
May 15, 2:13 PM CDT	Areal Flood Advisory	HGX	Harris, Montgomery	92 min
May 15, 2:28 PM CDT	Areal Flood Advisory	HGX	Austin, Colorado, Washington	2 hr
May 15, 2:30 PM CDT	Special Weather Statement	HGX	Montgomery	30 min
May 15, 2:43 PM CDT	Areal Flood Advisory	HGX	Harris, Waller	2 hr
May 15, 3:07 PM CDT	Areal Flood Advisory	HGX	Fort Bend, Harris, Montgomery, Waller	3 hr
May 15, 3:33 PM CDT	Areal Flood Advisory	HGX	Brazos, Grimes, Houston, Madison, Walker	4 hr
May 15, 3:56 PM CDT	Special Weather Statement	HGX	Brazos, Madison	34 min

Nearby

Flash Flood Warnings in Texas, 2023 Every flash flood warning in 2023

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.