Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 13, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Mar 17, 1999, 11:08 PM CST for Val Verde County, Texas. It was in force for 32 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
- Mar 17, 1999, 11:08 PM CST (05:08 UTC)
- Expired
- Mar 17, 1999, 11:40 PM CST
- In force
- 32 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 05:08 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 17, 6:30 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 5.1 hours before the alert went out and 66 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
- 834 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 1444 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 280 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KSAT 180507 RRA TORSAT TXC465-180540- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1108 PM CST WED MAR 17 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR... VAL VERDE COUNTY IN TEXAS * UNTIL 1140 PM CST * AT 1105 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 5 MILE NORTHWEST OF COMSTOCK... MOVING NORTHEAST AT 25 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... NORTH END OF LAKE AMISTAD AT 1112 PM U.S. HIGHWAY 277/377 AT 1120 PM IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 9:39 PM CST | Severe Thunderstorm Warning | EWX | Val Verde | 61 min |
| Mar 17, 10:46 PM CST | Severe Thunderstorm Warning | EWX | Val Verde | 59 min |
| Mar 18, 12:49 AM CST | Severe Thunderstorm Warning | EWX | Val Verde | 76 min |
| Mar 18, 2:18 AM CST | Severe Thunderstorm Warning | EWX | Edwards | 72 min |
| Mar 18, 3:25 AM CST | Severe Thunderstorm Warning | EWX | Edwards | 60 min |
| Mar 18, 5:24 AM CST | Flash Flood Warning | EWX | Real | 3 hr |
| Mar 18, 8:47 AM CST | Flash Flood Warning | EWX | Gillespie | 3 hr |
| Mar 18, 9:31 AM CST | Flash Flood Warning | EWX | Kerr | 3 hr |
| Mar 18, 9:46 AM CST | Flash Flood Warning | EWX | Llano | 3 hr |
| Mar 18, 12:10 PM CST | Flash Flood Warning | EWX | Gillespie | 110 min |
| Mar 18, 12:41 PM CST | Flash Flood Warning | EWX | Llano | 114 min |
| Mar 18, 2:49 PM CST | Flash Flood Warning | EWX | Llano | 2 hr |
Nearby
Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.