Alert archive / Texas / Tornado Warnings in 1999
Tornado Warning 28, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at May 30, 1999, 10:14 PM CDT for Lavaca County, Texas. It was in force for 46 min. 1 report 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
- May 30, 1999, 10:14 PM CDT (03:14 UTC)
- Expired
- May 30, 1999, 11:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Lavaca County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 30, 10:15 PM CDT | Tornado F1 | Halletsville, TX | The Lavaca County Sheriff's Department reported a second tornado just west of Hallettsville. This tornado was very small and short-lived. It damaged the roof of a house and knocked down several trees before dissipating. |
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
Corpus Christi, TX (KCRP), launched 00:00Z, 3.2 hours before the alert went out and 188 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
- 3761 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 797 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 8.8
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KSAT 310316 RRA TORSAT TXC285-310400- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1014 PM CDT SUN MAY 30 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR THE FOLLOWING... LAVACA COUNTY IN TEXAS * UNTIL 1100 PM CDT * AT 1014 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH A POSSIBLE TORNADO 6 MILES EAST OF SHINER... MOVING SOUTH AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE... YOAKUM THE SAFEST PLACE TO BE DURING A TORNADO IS IN A WELL-BUILT BUILDING. IF NO BASEMENT IS AVAILABLE...GO TO A CENTRAL...SMALL ROOM ON THE LOWEST FLOOR...SUCH AS A BATHROOM...CLOSET OR HALLWAY. STAY AWAY FROM OUTSIDE WINDOWS AND DOORS. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.
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
Special weather statement, May 30, 7:15 PM CDT, 2 hours 59 minutes before
TXZ171>173-183>194-202>209-217>225-228-310300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 715 PM CDT SUN MAY 30 1999 SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH THE EVENING HOURS TODAY OVER THE DEL RIO AREA AND WESTERN HILL COUNTRY AS AN UPPER AIR DISTURBANCE INTERACTS WITH MOIST...UNSTABLE AIR WHICH CONTINUES TO BLANKET SOUTH TEXAS. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE ALSO POSSIBLE OVER THE EXTREME EASTERN COUNTIES OF SOUTH CENTRAL TEXAS...INCLUDING DEWITT...LAVACA...FAYETTE AND GONZALES COUNTIES INTO THIS EVENING...TRIGGERED BY THE OUTFLOW OF THUNDERSTORMS FURTHER EAST. BRIEF HEAVY RAINS OF 1 TO 2 INCHES PER HOUR...GUSTY WINDS AND FREQUENT LIGHTNING CAN BE EXPECTED WITH THESE THUNDERSTORMS. CAMPERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM OCCURS. IN BOTH AREAS...THE THUNDERSTORMS SHOULD DIMINISH QUICKLY AFTER SUNDOWN. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, May 30, 7:15 PM CDT, 2 hours 59 minutes before
TXZ171>173-183>194-202>209-217>225-228-310300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 715 PM CDT SUN MAY 30 1999 SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH THE EVENING HOURS TODAY OVER THE DEL RIO AREA AND WESTERN HILL COUNTRY AS AN UPPER AIR DISTURBANCE INTERACTS WITH MOIST...UNSTABLE AIR WHICH CONTINUES TO BLANKET SOUTH TEXAS. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE ALSO POSSIBLE OVER THE EXTREME EASTERN COUNTIES OF SOUTH CENTRAL TEXAS...INCLUDING DEWITT...LAVACA...FAYETTE AND GONZALES COUNTIES INTO THIS EVENING...TRIGGERED BY THE OUTFLOW OF THUNDERSTORMS FURTHER EAST. BRIEF HEAVY RAINS OF 1 TO 2 INCHES PER HOUR...GUSTY WINDS AND FREQUENT LIGHTNING CAN BE EXPECTED WITH THESE THUNDERSTORMS. CAMPERS AND OTHERS INVOLVED IN OUTDOOR ACTIVITIES SHOULD BE READY TO SEEK SAFE SHELTER IF A THUNDERSTORM OCCURS. IN BOTH AREAS...THE THUNDERSTORMS SHOULD DIMINISH QUICKLY AFTER SUNDOWN. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 9:04 PM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 56 min |
| May 30, 9:34 PM CDT | Tornado Warning | EWX | Fayette, Lavaca | 41 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.