Alert archive / Texas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 49, NWS Houston/Galveston, TX

May 10, 2026Grimes County, Madison County, Walker County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 10, 2026, 8:28 PM CDT for Grimes County, Madison County, Walker County, Texas. It was in force for 32 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 10, 2026, 8:28 PM CDT (01:28 UTC)
Expired: May 10, 2026, 9:00 PM CDT
In force: 32 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Damage threat: Destructive
Hail: 2.75 in
Wind: 80.0 mph

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

The radar

The Ft Hood radar (KGRK), 149 km from the middle of the area, began a volume at 01:28 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

Fort Worth, TX (KFWD), launched 00:00Z, 1.5 hours before the alert went out and 270 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: 199 J/kg
Mixed-layer CIN: -297 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 10, 5:12 PM CDT, 3 hours 16 minutes earlier.

Area forecast discussion, May 10, 5:12 PM CDT, 3 hours 16 minutes before

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In the hours before

Special weather statement, May 10, 5:41 PM CDT, 2 hours 47 minutes before

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Special weather statement, May 10, 6:11 PM CDT, 2 hours 17 minutes before

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Special weather statement, May 10, 6:45 PM CDT, 1 hour 43 minutes before

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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
May 10, 7:00 PM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto	30 min
May 10, 7:07 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery, Walker	23 min
May 10, 7:24 PM CDT	Special Weather Statement	HGX	Washington	36 min
May 10, 7:29 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery, Walker	31 min
May 10, 7:31 PM CDT	Special Weather Statement	HGX	Polk, San Jacinto	29 min
May 10, 7:57 PM CDT	Special Weather Statement	HGX	Walker	33 min
May 10, 7:57 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery, Walker	33 min
May 10, 7:59 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery, Walker	31 min
May 10, 7:59 PM CDT	Severe Thunderstorm Warning	HGX	Polk	31 min
May 10, 8:12 PM CDT	Special Weather Statement	HGX	Trinity	33 min
May 10, 8:24 PM CDT	Special Weather Statement	HGX	Montgomery	36 min
May 10, 8:27 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Washington	33 min
May 10, 8:30 PM CDT	Severe Thunderstorm Warning	HGX	Polk	30 min
May 10, 8:49 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Houston, Madison, Walker	26 min
May 10, 8:49 PM CDT	Severe Thunderstorm Warning	HGX	Burleson, Washington	26 min
May 10, 9:00 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Madison	30 min
May 10, 9:01 PM CDT	Special Weather Statement	HGX	Montgomery	29 min
May 10, 9:02 PM CDT	Special Weather Statement	HGX	Angelina	28 min
May 10, 9:13 PM CDT	Special Weather Statement	HGX	Polk	32 min
May 10, 9:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	HGX	Madison	31 min
May 10, 9:18 PM CDT	Severe Thunderstorm Warning	HGX	Polk	27 min
May 10, 9:19 PM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Grimes, Montgomery, Walker, Washington	6 hr
May 10, 9:27 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Madison	21 min
May 10, 9:44 PM CDT	Severe Thunderstorm Warning	HGX	Houston, Madison	16 min
May 10, 9:48 PM CDT	Special Weather Statement	HGX	Polk	27 min
May 10, 10:01 PM CDT	Special Weather Statement	HGX	Brazos, Burleson, Grimes, Washington	44 min
May 10, 10:08 PM CDT	Areal Flood Advisory	HGX	Polk	3 hr
May 10, 10:41 PM CDT	Severe Thunderstorm Warning	HGX	Burleson, Washington	34 min
May 10, 11:17 PM CDT	Severe Thunderstorm Warning	HGX	Washington	28 min
May 10, 11:22 PM CDT	Areal Flood Advisory	HGX	Brazos, Burleson, Washington	3 hr
May 10, 11:43 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Washington	32 min
May 10, 11:48 PM CDT	Special Weather Statement	HGX	Colorado	42 min
May 11, 12:15 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Washington	30 min
May 11, 12:45 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Harris, Waller, Washington	30 min
May 11, 1:33 AM CDT	Special Weather Statement	HGX	Fort Bend, Montgomery, Waller	57 min
May 11, 2:08 AM CDT	Special Marine Warning	HGX		67 min
May 11, 2:31 AM CDT	Special Weather Statement	HGX	Harris, Montgomery, San Jacinto, Walker	59 min
May 11, 2:33 AM CDT	Special Marine Warning	HGX		57 min
May 11, 3:21 AM CDT	Special Marine Warning	HGX		54 min
May 11, 3:25 AM CDT	Special Weather Statement	HGX	Liberty	65 min
May 11, 4:30 AM CDT	Special Weather Statement	HGX	Chambers	45 min

Nearby

Severe Thunderstorm Warnings in Texas, 2026 Every severe thunderstorm 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.