Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 27, 1999, 5:55 PM CST for Uvalde County, Zavala County, Texas. It was in force for 90 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
- Mar 27, 1999, 5:55 PM CST (23:55 UTC)
- Expired
- Mar 27, 1999, 7:25 PM CST
- In force
- 90 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Uvalde County, TX, Zavala County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 27, 6:20 PM CST | Thunderstorm Wind | Concan, TX | |
| Mar 27, 6:35 PM CST | Tornado F1 | Concan, TX | Heavy rain and damaging winds preceded a small and short-lived tornado that knocked down trees and blew over power lines northeast of Concan. The path of the severe winds continued northeastward, knocking over trees in Garner Park. |
| Mar 27, 6:45 PM CST | Thunderstorm Wind | Utopia, TX | Trees were reported by a spotter to have been blown down in a 4 mile long path from just south of Utopia in Uvalde County into southern Real County. |
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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.9 hours before the alert went out and 109 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 507 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 324 m²/s²
- 0-3 km storm-relative helicity
- 353 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 4:55 PM CST | Tornado Warning | EWX | Kinney, Val Verde | 60 min |
| Mar 27, 5:20 PM CST | Severe Thunderstorm Warning | EWX | Maverick | 60 min |
| Mar 27, 5:29 PM CST | Severe Thunderstorm Warning | EWX | Edwards | 61 min |
| Mar 27, 5:41 PM CST | Flash Flood Warning | EWX | Val Verde | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999
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.