Alert archive / Texas / Flash Flood Warnings in 2024

Flash Flood Warning 6, NWS Houston/Galveston, TX

January 24, 20246 counties in Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jan 24, 2024, 1:46 AM CST for 6 counties in Texas. It was in force for 6 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: Jan 24, 2024, 1:46 AM CST (07:46 UTC)
Expired: Jan 24, 2024, 7:45 AM CST
In force: 6 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: None

Counties Grimes County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 136 km from the middle of the area, began a volume at 07:47 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 00:00Z, 7.8 hours before the alert went out and 217 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 141 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 Jan 23, 11:44 PM CST, 2 hours 2 minutes earlier.

Area forecast discussion, Jan 23, 11:44 PM CST, 2 hours 2 minutes before

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In the hours before

Local storm report, Jan 23, 9:32 PM CST, 4 hours 14 minutes before

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Local storm report, Jan 23, 9:41 PM CST, 4 hours 5 minutes before

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Local storm report, Jan 23, 9:48 PM CST, 3 hours 58 minutes before

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Local storm report, Jan 24, 12:10 AM CST, 1 hour 36 minutes before

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Local storm report, Jan 24, 1:10 AM CST, 36 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jan 24, 1:26 AM CST, 20 minutes before

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<body>
  <main class="wrap">
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      <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
Jan 23, 6:07 PM CST	Areal Flood Advisory	HGX	Brazos, Grimes, Montgomery, Walker, Waller, Washington	3 hr
Jan 23, 6:17 PM CST	Areal Flood Advisory	HGX	San Jacinto	100 min
Jan 23, 6:42 PM CST	Areal Flood Advisory	HGX	Montgomery, San Jacinto, Trinity, Walker	2 hr
Jan 23, 6:47 PM CST	Special Weather Statement	HGX	Trinity, Walker	43 min
Jan 23, 7:19 PM CST	Flash Flood Warning	HGX	Brazos, Grimes, Waller, Washington	12 hr
Jan 23, 7:23 PM CST	River Flood Warning	HGX	Polk, San Jacinto, Trinity, Walker	6 days
Jan 23, 7:49 PM CST	Flash Flood Warning	HGX	San Jacinto	6 hr
Jan 23, 8:00 PM CST	Areal Flood Advisory	HGX	Polk, San Jacinto, Trinity	3 hr
Jan 23, 8:13 PM CST	Flash Flood Warning	HGX	Austin, Washington	12 hr
Jan 23, 8:51 PM CST	Flash Flood Warning	HGX	Montgomery, San Jacinto, Trinity, Walker	5 hr
Jan 23, 9:30 PM CST	Flash Flood Warning	HGX	Polk, Trinity	3 hr
Jan 24, 1:16 AM CST	River Flood Warning	HGX	Polk, San Jacinto	26 hr
Jan 24, 2:20 AM CST	Areal Flood Warning	HGX	Colorado	4 hr
Jan 24, 3:10 AM CST	Special Weather Statement	HGX	Colorado	35 min
Jan 24, 4:02 AM CST	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Matagorda	3 hr
Jan 24, 4:51 AM CST	Areal Flood Advisory	HGX	Chambers, Galveston	3 hr
Jan 24, 5:01 AM CST	Flash Flood Warning	HGX	Brazoria, Matagorda	3 hr
Jan 24, 5:09 AM CST	Areal Flood Warning	HGX	Waller	8 hr
Jan 24, 5:28 AM CST	Areal Flood Advisory	HGX	Brazoria, Galveston	3 hr
Jan 24, 5:34 AM CST	Areal Flood Advisory	HGX	Brazoria, Chambers, Galveston, Harris	3 hr
Jan 24, 6:04 AM CST	Areal Flood Warning	HGX	Colorado	24 hr
Jan 24, 7:01 AM CST	River Flood Warning	HGX	Brazoria	7 days
Jan 24, 7:42 AM CST	Areal Flood Warning	HGX	Grimes, Montgomery, Polk, San Jacinto, Trinity, Walker	5 hr
Jan 24, 7:45 AM CST	Areal Flood Warning	HGX	Austin, Washington	5 hr
Jan 24, 7:48 AM CST	Areal Flood Warning	HGX	Brazos, Grimes, Waller, Washington	5 hr
Jan 24, 9:51 AM CST	River Flood Warning	HGX	Lavaca	48 hr
Jan 24, 9:55 AM CST	River Flood Warning	HGX	Colorado, Wharton	48 hr
Jan 24, 9:59 AM CST	River Flood Warning	HGX	Liberty, Polk, San Jacinto	3 days
Jan 24, 10:06 AM CST	River Flood Warning	HGX	Harris, Montgomery	5 days
Jan 24, 10:08 AM CST	River Flood Warning	HGX	Harris, Montgomery	47 hr
Jan 24, 10:13 AM CST	River Flood Warning	HGX	Montgomery	3 days
Jan 24, 10:15 AM CST	River Flood Warning	HGX	Hardin, Liberty, Polk	28 hr
Jan 24, 10:18 AM CST	River Flood Warning	HGX	Harris, Montgomery	43 hr
Jan 24, 10:42 AM CST	Rip Current Statement	HGX	Brazoria, Galveston, Matagorda	8 hr
Jan 24, 12:22 PM CST	Small Craft Advisory	HGX		18 hr
Jan 24, 12:47 PM CST	Areal Flood Warning	HGX	Austin, Brazos, Burleson, Colorado, Grimes, Harris and 10 more	23 hr
Jan 24, 1:04 PM CST	Special Marine Warning	HGX		26 min
Jan 24, 2:48 PM CST	River Flood Warning	HGX	Montgomery	71 hr
Jan 24, 4:10 PM CST	River Flood Warning	HGX	Harris	21 days

Nearby

Flash Flood Warnings in Texas, 2024 Every flash flood warning in 2024

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.