Alert archive / Texas / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

May 1, 20254 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 1, 2025, 7:30 PM CDT for 4 counties in Texas. It was in force for 30 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: May 1, 2025, 7:30 PM CDT (00:30 UTC)
Expired: May 1, 2025, 8:00 PM CDT
In force: 30 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Grimes County, TX, Madison County, TX, Montgomery County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 145 km from the middle of the area, began a volume at 00:29 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 1, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.5 hours before the alert went out and 284 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: 2995 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 8.0

Open this sounding in Storm Lab

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 May 1, 6:21 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, May 1, 6:21 PM CDT, 1 hour 9 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 1, 4:19 PM CDT, 3 hours 11 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>

Local storm report, May 1, 4:59 PM CDT, 2 hours 31 minutes before

Preliminary Local Storm Report...Summary
National Weather Service Houston/Galveston TX
459 PM CDT Thu May 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1035 PM     Hail             5 ENE Madisonville      30.98N 95.82W
04/30/2025  M0.25 Inch       Madison            TX   County Official

1000 PM     Hail             1 NW Grapeland          31.50N 95.50W
04/30/2025  M1.00 Inch       Houston            TX   Emergency Mngr

            Quarter sized hail west off Grapeland.

1025 PM     Tstm Wnd Dmg     13 WNW Lovelady         31.19N 95.65W
04/30/2025                   Houston            TX   Emergency Mngr

            Multiple trees down west of Austonio. A
            secondary roof over a trailer house was
            blown off.

1026 PM     Hail             10 W Lovelady           31.16N 95.60W
04/30/2025  E0.50 Inch       Houston            TX   Public

            Report from mPING: Half-inch (0.50 in.).

1050 PM     Tstm Wnd Dmg     10 E Midway             31.00N 95.58W
04/30/2025                   Houston            TX   Public

            Tree branches down, blocking roads near
            Weldon.

1100 PM     Tstm Wnd Dmg     4 NE Kennard            31.41N 95.14W
04/30/2025                   Houston            TX   Emergency Mngr

            One tree down blocking both lanes at FM 227
            near CR1165, north of Ratcliff.

&&

Special weather statement, May 1, 6:41 PM CDT, 49 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>

Special weather statement, May 1, 7:03 PM CDT, 27 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 1, 7:03 PM CDT	Special Weather Statement	HGX	Brazos, Grimes, Madison, Walker	27 min
May 1, 7:57 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery, San Jacinto, Walker	33 min
May 1, 8:29 PM CDT	Special Weather Statement	HGX	Montgomery, San Jacinto	31 min
May 1, 8:49 PM CDT	Special Weather Statement	HGX	Burleson	26 min
May 1, 8:57 PM CDT	Special Weather Statement	HGX	Montgomery, San Jacinto	33 min
May 1, 9:13 PM CDT	Special Weather Statement	HGX	Burleson	32 min
May 1, 9:29 PM CDT	Special Weather Statement	HGX	San Jacinto	31 min
May 1, 9:45 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Washington	30 min
May 1, 10:43 PM CDT	Rip Current Statement	HGX	Brazoria, Galveston, Matagorda	22 hr
May 2, 11:14 AM CDT	Special Weather Statement	HGX	Liberty	46 min
May 2, 12:04 PM CDT	Special Weather Statement	HGX	Polk, San Jacinto	26 min
May 2, 12:07 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty, Montgomery	23 min
May 2, 12:30 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty, Montgomery	30 min
May 2, 12:38 PM CDT	Special Weather Statement	HGX	Waller	37 min
May 2, 1:20 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty	40 min
May 2, 1:35 PM CDT	Special Weather Statement	HGX	Waller	25 min
May 2, 1:37 PM CDT	Tornado Warning	HGX	Harris, Liberty	23 min
May 2, 1:52 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Waller	23 min
May 2, 1:58 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty	47 min
May 2, 2:20 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty, Montgomery	25 min
May 2, 2:42 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty, Montgomery	33 min
May 2, 2:44 PM CDT	Areal Flood Advisory	HGX	Liberty	2 hr
May 2, 2:46 PM CDT	Areal Flood Advisory	HGX	Austin, Fort Bend, Waller	119 min
May 2, 2:49 PM CDT	Special Weather Statement	HGX	Colorado	26 min
May 2, 2:52 PM CDT	Areal Flood Advisory	HGX	Harris, Liberty, Montgomery	113 min
May 2, 2:56 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Colorado	34 min
May 2, 3:07 PM CDT	Special Weather Statement	HGX	Walker	23 min
May 2, 3:13 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty	32 min
May 2, 3:24 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Trinity, Walker	66 min
May 2, 3:31 PM CDT	Areal Flood Advisory	HGX	Colorado	3 hr
May 2, 3:31 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Colorado	44 min
May 2, 3:54 PM CDT	Special Weather Statement	HGX	Liberty	51 min
May 2, 4:09 PM CDT	Special Weather Statement	HGX	Brazos, Houston, Madison	36 min
May 2, 4:30 PM CDT	Special Weather Statement	HGX	Colorado	60 min
May 2, 4:31 PM CDT	Special Weather Statement	HGX	Burleson	29 min
May 2, 4:42 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes, Houston, Madison, Walker	48 min
May 2, 4:56 PM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Grimes, Houston, Madison, Walker and 1 more	2 hr
May 2, 5:15 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Colorado	45 min
May 2, 5:23 PM CDT	Areal Flood Advisory	HGX	Grimes, Montgomery, San Jacinto, Walker	4 hr
May 2, 5:40 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Colorado	18 min
May 2, 5:50 PM CDT	Special Weather Statement	HGX	Montgomery	25 min
May 2, 6:22 PM CDT	Special Weather Statement	HGX	Colorado	53 min
May 2, 6:48 PM CDT	Special Weather Statement	HGX	Liberty	27 min
May 2, 6:54 PM CDT	Special Weather Statement	HGX	Harris	36 min

Nearby

Severe Thunderstorm Warnings in Texas, 2025 Every severe thunderstorm warning in 2025

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.