Alert archive / Texas / Flash Flood Warnings in 2026

Flash Flood Warning 18, NWS Houston/Galveston, TX

June 16, 2026Harris County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 16, 2026, 12:02 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: Jun 16, 2026, 12:02 PM CDT (17:02 UTC)
Expired: Jun 16, 2026, 2:30 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 17:06 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, 5.0 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: 279 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: 158 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 Jun 16, 6:36 AM CDT, 5 hours 26 minutes earlier.

Area forecast discussion, Jun 16, 6:36 AM CDT, 5 hours 26 minutes before

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In the hours before

Local storm report, Jun 16, 11:16 AM CDT, 46 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 9:58 PM CDT	Areal Flood Advisory	HGX	Chambers	3 hr
Jun 15, 10:10 PM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Jackson, Matagorda, Wharton	3 hr
Jun 15, 10:31 PM CDT	River Flood Warning	HGX	Brazoria, Fort Bend, Wharton	32 hr
Jun 15, 11:15 PM CDT	Flash Flood Warning	HGX	Jackson	3 hr
Jun 16, 1:59 AM CDT	Special Marine Warning	HGX		61 min
Jun 16, 2:28 AM CDT	River Flood Warning	HGX	Matagorda, Wharton	32 hr
Jun 16, 2:41 AM CDT	Special Marine Warning	HGX		64 min
Jun 16, 2:55 AM CDT	Special Marine Warning	HGX		65 min
Jun 16, 3:45 AM CDT	Special Marine Warning	HGX		60 min
Jun 16, 4:23 AM CDT	Flash Flood Warning	HGX	Jackson	3 hr
Jun 16, 7:35 AM CDT	Areal Flood Warning	HGX	Jackson	85 min
Jun 16, 8:07 AM CDT	Areal Flood Advisory	HGX	Montgomery, San Jacinto, Walker	3 hr
Jun 16, 9:24 AM CDT	Areal Flood Advisory	HGX	Grimes, Harris, Montgomery, Waller	3 hr
Jun 16, 9:41 AM CDT	Flash Flood Warning	HGX	Montgomery	5 hr
Jun 16, 9:46 AM CDT	Areal Flood Advisory	HGX	Colorado	3 hr
Jun 16, 9:56 AM CDT	Areal Flood Advisory	HGX	Harris, Liberty, Montgomery, San Jacinto, Waller	3 hr
Jun 16, 10:22 AM CDT	River Flood Warning	HGX	Brazoria	16 hr
Jun 16, 10:28 AM CDT	Small Craft Advisory	HGX		47 hr
Jun 16, 10:28 AM CDT	Tropical Storm Watch	HGX	Brazoria, Chambers, Galveston, Matagorda	25 hr
Jun 16, 10:31 AM CDT	Flash Flood Warning Considerable damage threat	HGX	Harris, Montgomery	4 hr
Jun 16, 10:32 AM CDT	Coastal Flood Warning	HGX	Galveston	32 hr
Jun 16, 10:32 AM CDT	Coastal Flood Advisory	HGX	Brazoria, Galveston, Matagorda	40 hr
Jun 16, 10:49 AM CDT	Flash Flood Warning	HGX	Harris, Montgomery, Waller	3 hr
Jun 16, 11:08 AM CDT	Flash Flood Warning	HGX	Liberty, Montgomery, San Jacinto	2 hr
Jun 16, 11:33 AM CDT	Areal Flood Advisory	HGX	Liberty, Polk, San Jacinto	3 hr
Jun 16, 2:14 PM CDT	Areal Flood Warning	HGX	Harris, Montgomery, Waller	3 hr
Jun 16, 2:57 PM CDT	Areal Flood Advisory	HGX	Chambers	3 hr
Jun 16, 4:39 PM CDT	Tropical Storm Warning	HGX	Brazoria, Chambers, Galveston	27 hr
Jun 16, 4:59 PM CDT	Areal Flood Advisory	HGX	Brazos, Burleson	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.