Alert archive / Texas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 71, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 12, 2020, 1:15 PM CDT for Brazos County, Burleson County, 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 12, 2020, 1:15 PM CDT (18:15 UTC)
- Expired
- May 12, 2020, 1:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brazos County, TX, Burleson County, TX
The radar
The Ft Hood radar (KGRK), 90 km from the middle of the area, began a volume at 18:14 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 12:00Z, 6.3 hours before the alert went out and 263 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
- 332 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 271 m²/s²
- 0-3 km storm-relative helicity
- 405 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.1
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 12, 12:51 PM CDT, 24 minutes earlier.
Area forecast discussion, May 12, 12:51 PM CDT, 24 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 6:19 AM CDT | Beach Hazards Statement | HGX | Brazoria, Galveston, Matagorda | 17 hr |
| May 12, 12:25 PM CDT | Tornado Warning | HGX | Burleson | 50 min |
| May 12, 1:45 PM CDT | Special Weather Statement | HGX | Burleson | 30 min |
| May 12, 4:42 PM CDT | Special Weather Statement | HGX | Austin, Brazos, Colorado, Grimes, Montgomery, Waller and 1 more | 63 min |
| May 12, 5:05 PM CDT | Areal Flood Advisory | HGX | Austin, Brazos, Grimes, Harris, Waller, Washington | 55 min |
| May 12, 5:51 PM CDT | Areal Flood Advisory | HGX | Grimes, Madison, Walker | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020
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.