Alert archive / Texas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 33, NWS Houston/Galveston, TX

May 1, 2026Chambers County, Galveston County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 1, 2026, 1:00 AM CDT for Chambers County, Galveston County, Texas. It was in force for 16 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, 2026, 1:00 AM CDT (06:00 UTC)
Expired
May 1, 2026, 1:16 AM CDT
In force
16 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Chambers County, TX, Galveston County, TX

The radar

The Houston radar (KHGX), 33 km from the middle of the area, began a volume at 06:03 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

Corpus Christi, TX (KCRP), launched 00:00Z, 6.0 hours before the alert went out and 321 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-pSkew-T log-p diagram, Corpus Christi, TX at 00:00Z on 2026-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1072 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 2026-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1072 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 8:03 PM CDTSmall Craft AdvisoryHGX23 hr
Apr 30, 11:16 PM CDTSpecial Weather StatementHGXHarris44 min
Apr 30, 11:33 PM CDTGale WarningHGX33 hr
May 1, 12:02 AM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend, Galveston, Harris28 min
May 1, 12:30 AM CDTSevere Thunderstorm WarningHGXBrazoria, Galveston, Harris30 min
May 1, 12:35 AM CDTSpecial Marine WarningHGX40 min
May 1, 2:40 AM CDTSevere Thunderstorm WarningHGXColorado, Wharton50 min
May 1, 3:29 AM CDTSpecial Weather StatementHGXAustin, Fort Bend, Waller31 min
May 1, 3:40 AM CDTSpecial Weather StatementHGXHarris35 min
May 1, 4:28 AM CDTSpecial Weather StatementHGXLiberty32 min
May 1, 4:58 AM CDTAreal Flood AdvisoryHGXFort Bend, Harris, Montgomery, Waller3 hr
May 1, 7:41 AM CDTSpecial Weather StatementHGXJackson49 min
May 1, 9:37 AM CDTSpecial Marine WarningHGX38 min
May 1, 11:39 AM CDTSpecial Marine WarningHGX51 min
May 1, 12:01 PM CDTSpecial Marine WarningHGX29 min
May 1, 12:21 PM CDTSpecial Marine WarningHGX39 min
May 1, 12:25 PM CDTSpecial Weather StatementHGXGalveston20 min
May 1, 1:24 PM CDTSpecial Weather StatementHGXJackson51 min
May 1, 1:55 PM CDTSpecial Marine WarningHGX95 min
May 1, 1:58 PM CDTSevere Thunderstorm WarningHGXJackson, Matagorda, Wharton47 min
May 1, 2:45 PM CDTSevere Thunderstorm WarningHGXJackson, Matagorda, Wharton30 min
May 1, 3:03 PM CDTSpecial Marine WarningHGX27 min
May 1, 3:17 PM CDTSevere Thunderstorm Warning Considerable damage threatHGXBrazoria, Matagorda28 min
May 1, 3:27 PM CDTSpecial Marine WarningHGX93 min
May 1, 3:32 PM CDTAreal Flood AdvisoryHGXBrazoria, Chambers, Fort Bend, Galveston, Harris, Liberty and 1 more3 hr
May 1, 3:33 PM CDTSpecial Weather StatementHGXBrazoria57 min
May 1, 5:48 PM CDTSpecial Marine WarningHGX57 min

Nearby

Severe Thunderstorm Warnings in Texas, 2026Every 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.