Alert archive / Texas / Tornado Warnings in 1991
Tornado Warning 5, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Jan 18, 1991, 7:20 AM CST for Austin County, Colorado County, Waller County, Texas. It was in force for 40 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 18, 1991, 7:20 AM CST (13:20 UTC)
- Expired
- Jan 18, 1991, 8:00 AM CST
- In force
- 40 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Austin County, TX, Colorado County, TX, Waller County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 18, 7:25 AM CST | Tornado F0 | Colorado, TX | |
| Jan 18, 7:30 AM CST | Tornado F0 | Colorado, TX | |
| Jan 18, 7:30 AM CST | Thunderstorm Wind 0 | Austin, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 1.3 hours before the alert went out and 257 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
- 1104 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 601 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 387 m²/s²
- 0-3 km storm-relative helicity
- 479 m²/s²
- Significant tornado parameter
- 3.4
- Supercell composite
- 12.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 7:35 AM CST | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 40 min |
| Jan 18, 8:04 AM CST | Tornado Warning | HGX | Harris | 41 min |
| Jan 18, 8:33 AM CST | Tornado Warning | HGX | Harris | 42 min |
| Jan 18, 9:18 AM CST | Tornado Warning | HGX | Liberty | 57 min |
| Jan 18, 9:43 AM CST | Severe Thunderstorm Warning | HGX | Chambers | 62 min |
| Jan 18, 10:25 AM CST | Tornado Warning | HGX | Brazoria | 50 min |
| Jan 18, 10:33 AM CST | Severe Thunderstorm Warning | HGX | Galveston | 57 min |
Nearby
Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.