Alert archive / Texas / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 1, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 5, 2025, 3:43 PM CST for Brazoria County, Galveston County, Texas. It was in force for 17 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
- Jan 5, 2025, 3:43 PM CST (21:43 UTC)
- Expired
- Jan 5, 2025, 4:00 PM CST
- In force
- 17 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brazoria County, TX, Galveston County, TX
The radar
The Houston radar (KHGX), 27 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 210 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.
- Mixed-layer CAPE
- 502 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 688 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 254 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 4:38 AM CST | Cold Weather Advisory | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 30 hr |
| Jan 5, 4:38 AM CST | Freeze Warning | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 28 hr |
| Jan 5, 4:50 AM CST | Rip Current Statement | HGX | Brazoria, Galveston, Matagorda | 13 hr |
| Jan 5, 9:01 AM CST | Gale Warning | HGX | 24 hr | |
| Jan 5, 11:52 AM CST | Wind Advisory | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 10 more | 21 hr |
| Jan 5, 1:47 PM CST | Special Weather Statement | HGX | Liberty | 28 min |
| Jan 5, 2:14 PM CST | Special Weather Statement | HGX | Harris | 31 min |
| Jan 5, 2:49 PM CST | Special Weather Statement | HGX | Chambers, Liberty | 71 min |
| Jan 5, 2:58 PM CST | Special Marine Warning | HGX | 92 min | |
| Jan 5, 3:36 PM CST | Special Weather Statement | HGX | Galveston | 39 min |
| Jan 5, 4:10 PM CST | Special Weather Statement | HGX | Chambers | 65 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2025Every 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.