Alert archive / Texas / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 74, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 5, 1989, 6:12 AM CDT for Blanco County, Burnet County, Texas. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- May 5, 1989, 6:12 AM CDT (11:12 UTC)
- Expired
- May 5, 1989, 7:15 AM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Blanco County, TX, Burnet County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Stephenville/Cla, TX (KSEP), launched 00:00Z, 11.2 hours before the alert went out and 189 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
- 3113 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 8.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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 5, 2:02 AM CDT, 4 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 200 AM CDT FRI MAY 5 1989 ...TORNADO WATCH IN EFFECT UNTIL 7 AM CDT FRIDAY MORNING FOR MUCH OF OF SOUTH CENTRAL TEXAS... AT 155 AM CDT...WEATHER SERVICE RADAR INDICATED A 20 MILE WIDE LINE OF VERY INTENSE THUNDERSTORMS FROM NORTHWEST OF LLANO TO NORTHEAST OF GEORGETOWN TO EAST OF COLLEGE STATION. OTHER THUNDERSTORMS WERE DEVELOPING FROM NEAR JUNCTION TO NEAR AUSTIN. MOVEMENT WAS TO THE SOUTHEAST AT 45 MPH. WIND GUSTS TO 50 MILES PER HOUR OCCURRED AT COLLEGE STATION AS THE THUNDERSTORMS MOVED THROUGH DURING THE PAST HOUR. IN ADDITION... THESE STORMS HAVE PRODUCED LARGE HAIL AND SOME TORNADOES IN NORTH CENTRAL TEXAS EARLIER TONIGHT. PERSONS IN SOUTH CENTRAL TEXAS SHOULD STAY TUNED TO LATER WEATHER DEVELOPMENTS AND BE PREPARED TO SEEK SAFE SHELTER IF THREATENING WEATHER IS OBSERVED OR A WARNING IS ISSUED FOR YOUR AREA.
Special weather statement, May 5, 2:48 AM CDT, 3 hours 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 250 AM CDT FRI MAY 5 1989 ...TORNADO WATCH IN EFFECT UNTIL 7 AM CDT FRIDAY MORNING FOR MUCH OF OF SOUTH CENTRAL TEXAS... AT 245 AM CDT...WEATHER SERVICE RADAR INDICATED A LARGE AREA OF STRONG THUNDERSTORMS STRETCHING EASTWARD FROM JOHNSON CITY TO HOUSTON. THIS AREA WAS MOVING RAPIDLY SOUTHEAST AT 45 MILES AN HOUR. AT PRESENT...THE GREATEST THREAT FROM THESE STORMS IS THE OCCURRENCE OF STRONG...POSSIBLY DAMAGING...WIND AHEAD OF AND DURING THEIR PASSAGE. EARLIER...COLLEGE STATION HAD REPORTED A WIND GUST TO 50 MILES AN HOUR AS THE STORMS MOVED THROUGH. HOUSTON HAD REPORTED A 45 MILE AN HOUR GUST WITHIN THE PAST FEW MINUTES WITH THE STORMS APPROACHING THE CITY. ALONG WITH THE HIGH PROBABILITY OF STRONG STRAIGHT-LINE WIND...THESE TYPE OF STORMS HAVE BEEN KNOWN TO PRODUCE ISOLATED TORNADOES AND LARGE HAIL. A TORNADO WATCH IS IN EFFECT UNTIL 7 AM FOR MUCH OF SOUTH CENTRAL TEXAS. THIS WATCH INCLUDES THE METROPOLITAN AREAS OF AUSTIN AND SAN ANTONIO. THIS IS A POTENTIALLY DANGEROUS STORM SYSTEM AND RESIDENTS ALL ACROSS SOUTH CENTRAL TEXAS NEED TO MAINTAIN A CLOSE WATCH ON THE WEATHER FOR THE NEXT 'FEW HOURS. ADDITIONAL BULLETINS WILL BE ISSUED AS NECESSARY TO KEEP YOU UPDATED. THESE BULLETINS WILL BE BROADCAST OVER NOAA WEATHER RADIO...YOUR BEST SOURCE OF WEATHER INFORMATION.
Special weather statement, May 5, 3:37 AM CDT, 2 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 335 AM CDT FRI MAY 5 1989 ...TORNADO WATCH IN EFFECT UNTIL 7 AM CDT FRIDAY MORNING FOR MUCH OF OF SOUTH CENTRAL TEXAS... AT 330 AM CDT...A LARGE AREA OF STRONG THUNDERSTORMS CONTINUED TO MOVE RAPIDLY ACROSS SOUTH CENTRAL TEXAS. THE STRONGEST STORMS WERE JUST EAST OF NEW BRAUNFELS AND SOUTHEAST OF AUSTIN. MOVEMENT WAS SOUTHEAST AT 45 MILES AN HOUR. THE STORMS HAVE EXHIBITED A CONSTANT CYCLE OF RAPID WEAKENING FOLLOWED BY REGENERATION THROUGHOUT THE NIGHT AND EARLY MORNING HOURS. THESE STORMS HAVE BEEN PROLIFIC STRONG WIND PRODUCERS DURING THEIR TREK ACROSS THE STATE...WITH GUSTS OFTEN REACHING 50 MILES AN HOUR. EARLIER... COLLEGE STATION EXPERIENCED A GUST OF 50 MILES AN HOUR AS THE STORMS ROLLED THROUGH. IN ADDITION...40 TO 45 MILE AN HOUR GUSTS WERE REPORTED AT BOTH AUSTIN AND HOUSTON...WITH A RECENT ESTIMATED REPORT OF 45 MILES AN HOUR IN THE NEW BRAUNFELS AREA. TORNADOES AND LARGE HAIL ALSO MAY ACCOMPANY THESE STORMS THIS MORNING. ACCORDINGLY...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF SOUTH CENTRAL TEXAS. THIS WATCH INCLUDES THE METROPOLITAN AREAS OF AUSTIN AND SAN ANTONIO. STAY TU>NED TO NOAA WEATHER RADIO THROUGHOUT THE MORNING FOR ADDITIONAL INFORMATION REGARDING THESE THUNDERSTORMS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 12:03 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Lampasas, San Saba | 57 min |
| May 5, 12:23 AM CDT | Tornado Warning | EWX | San Saba | 52 min |
| May 5, 1:11 AM CDT | Severe Thunderstorm Warning | EWX | Williamson | 64 min |
| May 5, 2:01 AM CDT | Severe Thunderstorm Warning | EWX | Burnet | 44 min |
| May 5, 2:14 AM CDT | Severe Thunderstorm Warning | EWX | Blanco | 61 min |
| May 5, 2:25 AM CDT | Severe Thunderstorm Warning | EWX | Travis | 50 min |
| May 5, 4:11 AM CDT | Tornado Warning | EWX | Hays | 34 min |
| May 5, 4:13 AM CDT | Tornado Warning | EWX | Guadalupe | 32 min |
| May 5, 4:25 AM CDT | Tornado Warning | EWX | Caldwell | 35 min |
| May 5, 4:37 AM CDT | Severe Thunderstorm Warning | EWX | Gonzales | 53 min |
| May 5, 5:03 AM CDT | Tornado Warning | EWX | Caldwell | 27 min |
| May 5, 5:23 AM CDT | Severe Thunderstorm Warning | EWX | Hays | 67 min |
| May 5, 6:12 AM CDT | Severe Thunderstorm Warning | EWX | Caldwell, Travis | 63 min |
| May 5, 7:30 AM CDT | Severe Thunderstorm Warning | EWX | Fayette | 45 min |
| May 5, 7:42 AM CDT | Tornado Warning | EWX | Caldwell, Hays | 63 min |
| May 5, 8:35 AM CDT | Severe Thunderstorm Warning | EWX | Gonzales | 70 min |
| May 5, 8:38 AM CDT | Tornado Warning | EWX | Caldwell, Fayette | 32 min |
| May 5, 8:44 AM CDT | Severe Thunderstorm Warning | EWX | Gonzales | 61 min |
| May 5, 8:47 AM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 58 min |
| May 5, 9:13 AM CDT | Severe Thunderstorm Warning | EWX | DeWitt | 62 min |
| May 5, 10:09 AM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Lavaca | 66 min |
| May 5, 10:23 AM CDT | Severe Thunderstorm Warning | EWX | Victoria | 67 min |
| May 5, 10:54 AM CDT | Severe Thunderstorm Warning | EWX | Gonzales | 51 min |
| May 5, 11:10 AM CDT | Severe Thunderstorm Warning | EWX | DeWitt | 65 min |
| May 5, 12:09 PM CDT | Severe Thunderstorm Warning | EWX | Karnes | 66 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1989Every severe thunderstorm warning in 1989
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.