Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 11, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Mar 12, 1999, 6:13 PM CST for Travis County, Williamson County, Texas. It was in force for 57 min. 5 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 12, 1999, 6:13 PM CST (00:13 UTC)
- Expired
- Mar 12, 1999, 7:10 PM CST
- In force
- 57 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Travis County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 39 km from the middle of the area, began a volume at 00:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 12, 6:20 PM CST | Hail 1.5 | Cedar Park, TX | |
| Mar 12, 6:25 PM CST | Hail 1.75 | Cedar Park, TX | |
| Mar 12, 6:30 PM CST | Hail 1.75 | Jollyville, TX | |
| Mar 12, 6:32 PM CST | Hail 1.75 | Pflugerville, TX | |
| Mar 12, 6:45 PM CST | Hail 0.88 | Round Rock, 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.
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 12, 3:45 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 0.2 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KSAT 130011 RRA TORSAT TXC453-491-130110- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 613 PM CST FRI MAR 12 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR... WILLIAMSON IN TEXAS TRAVIS IN TEXAS * UNTIL 710 PM CST * AT 610 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR JONESTOWN... MOVING EAST AT 25 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... CEDAR PARK AT 620 PM CST JOLLEYVILLE AT 630 PM CST NORTH AUSTIN AT 640 PM CST PFLUGERVILLE AT 650 PM CST IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS. LARGE HAIL HAS ALSO BEEN ASSOCIATED WITH THIS STORM. MAB
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Mar 12, 5:33 PM CST, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
533 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM LLANO TX 1.75 INCH HAIL
03/12/99 2 NE TOW SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
UVALDE DPS REPORTLocal storm report, Mar 12, 5:33 PM CST, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
533 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM LLANO TX 1.75 INCH HAIL
03/12/99 2 NE TOW SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
UVALDE DPS REPORTLocal storm report, Mar 12, 5:50 PM CST, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
550 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM 2NE TOW TX 1.75 INCH HAIL
03/12/99 LLANO SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
03/12/99 BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
03/12/99 UVALDE DPS REPORT
0530 PM UVALDE TX .75 INCH HAIL
03/12/99 UVALDE PD REPORTLocal storm report, Mar 12, 5:50 PM CST, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
550 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM 2NE TOW TX 1.75 INCH HAIL
03/12/99 LLANO SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
03/12/99 BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
03/12/99 UVALDE DPS REPORT
0530 PM UVALDE TX .75 INCH HAIL
03/12/99 UVALDE PD REPORTLocal storm report, Mar 12, 6:10 PM CST, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM 2NE TOW TX 1.75 INCH HAIL
03/12/99 LLANO SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
03/12/99 BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
03/12/99 UVALDE DPS REPORT
0530 PM UVALDE TX .75 INCH HAIL
03/12/99 UVALDE PD REPORT
0540 PM MARBLE FALLS TX TORNADO ON GROUND
03/12/99 BURNET REPORTED BY HAMS
0557 PM MARBLE FALLS TX 2.75 HAIL
03/12/99 BURNET REPORTED BY SPOTTER
0602 PM LAGO VISTA TX 1.75 HAIL
03/12/99 TRAVIS REPORTED BY HAMS
0602 PM SPICEWOOD TX 1.75 HAIL
03/12/99 BURNET REPORTED BY HAMSLocal storm report, Mar 12, 6:10 PM CST, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
610 PM CST FRI MAR 12 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 PM LOMA ALTA TX 1.75 INCH HAIL
03/12/99 VAL VERDE SHERIFF REPORT
LASTED 20 MINUTES
0410 PM 2NE TOW TX 1.75 INCH HAIL
03/12/99 LLANO SHERIFF REPORT
0515 PM MARBLE FALLS TX 1.75 INCH HAIL
03/12/99 BURNET PD REPORT
0530 PM KNIPPA TX 1.75 INCH HAIL
03/12/99 UVALDE DPS REPORT
0530 PM UVALDE TX .75 INCH HAIL
03/12/99 UVALDE PD REPORT
0540 PM MARBLE FALLS TX TORNADO ON GROUND
03/12/99 BURNET REPORTED BY HAMS
0557 PM MARBLE FALLS TX 2.75 HAIL
03/12/99 BURNET REPORTED BY SPOTTER
0602 PM LAGO VISTA TX 1.75 HAIL
03/12/99 TRAVIS REPORTED BY HAMS
0602 PM SPICEWOOD TX 1.75 HAIL
03/12/99 BURNET REPORTED BY HAMSThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 6:32 PM CST | Severe Thunderstorm Warning | EWX | Frio, Medina, Zavala | 58 min |
| Mar 12, 6:45 PM CST | Tornado Warning | EWX | Frio | 60 min |
| Mar 12, 7:04 PM CST | Severe Thunderstorm Warning | EWX | Bastrop, Travis | 61 min |
| Mar 12, 7:48 PM CST | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 62 min |
| Mar 12, 8:01 PM CST | Severe Thunderstorm Warning | EWX | Lee | 64 min |
| Mar 12, 8:07 PM CST | Severe Thunderstorm Warning | EWX | Uvalde, Zavala | 63 min |
| Mar 12, 8:21 PM CST | Severe Thunderstorm Warning | EWX | Kinney | 64 min |
| Mar 12, 8:44 PM CST | Severe Thunderstorm Warning | EWX | Bandera, Kerr | 61 min |
| Mar 12, 8:49 PM CST | Severe Thunderstorm Warning | EWX | Gillespie | 46 min |
| Mar 12, 9:08 PM CST | Severe Thunderstorm Warning | EWX | Frio, Medina, Zavala | 62 min |
| Mar 12, 10:08 PM CST | Severe Thunderstorm Warning | EWX | Dimmit, Frio | 62 min |
| Mar 12, 10:39 PM CST | Severe Thunderstorm Warning | EWX | Maverick | 66 min |
| Mar 12, 11:10 PM CST | Severe Thunderstorm Warning | EWX | Dimmit | 30 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.