Alert archive / Texas / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 20, 1989, 8:37 PM CST for Guadalupe County, Texas. It was in force for 53 min.
The area
The counties it named.
The facts
- Issued
- Mar 20, 1989, 8:37 PM CST (02:37 UTC)
- Expired
- Mar 20, 1989, 9:30 PM CST
- In force
- 53 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Guadalupe 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
Victoria Regiona, TX (KVCT), launched 00:00Z, 2.6 hours before the alert went out and 130 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
- 2294 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 860 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 210238
SVRSAT
TXC187-210345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
837 PM CST MON MAR 20 1989
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH
...GUADALUPE
REPORTS OF MARBLE TO GOLFBALL SIZE HAIL HAS FALLEN IN AND NEAR THE
CITY OF SEGUIN. THE SEVERE THUNDERSTORMS PRODUCING THE HAIL WERE
MOVING TO THE SOUTH AT 25 TO 30 MPH.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
WHEN A THUNDERSTORM THREATENS...SEEK SHELTER INSIDE A HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS. REFRAIN FROM USING ELECTRICAL
APPLIANCES.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH 9LITTLE OR NO WARNING.
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.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, Mar 20, 3:10 PM CST, 5 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 310 PM CST MON MAR 20 1989 ...COLDER WEATHER ON ITS WAY AFTER THE WARM WEATHER WE HAVE TODAY... COLD AND WINDY WEATHER IS EXPECTED TONIGHT AND TUESDAY IN THE TEXAS HILL COUNTRY AND SOUTHCENTRAL TEXAS. A STRONG COLD FRONT IN NORTH AND NORTHWEST TEXAS WILL MOVE INTO THE HILL COUNTRY AND SOUTHCENTRAL TEXAS THIS EVENING. THE COLD FRONT IS FORECAST TO MOVE INTO THE NORTHWEST GULF OF MEXICO TUESDAY...LEAVING UNSEASONABLY COLD WEATHER OVER SOUTH TEXAS FOR LATE MARCH. DAMP AND CHILLY WEATHER COULD COME LATER TONIGHT OR TUESDAY IF RAIN DEVELOPS. AT THE PRESENT TIME THERE IS A 20 PERCENT CHANCE OF RAIN IN THE FORECAST TONIGHT...INCREASING TO 30 PERCENT TUESDAY. IN THE HILL COUNTRY TEMPERATURES ARE FORECAST TO FALL TO NEAR 40 TONIGHT. WITH NORTH WINDS OF 20 TO 30 MPH WITH ...THE WIND CHILL INDEX WILL BE IN THE TEENS OR POSSIBLY SINGLE DIGITS. AS A RESULT A WIND CHILL ADVISORY IS IN EFFECT TONIGHT FOR THE HILL COUNTRY. HIGH TEMPERATURES TUESDAY ARE EXPECTED TO BE NEAR 50 ALONG WITH STRONG NORTH WINDS OF 20 TO 30 MPH. TEMPERATURES TUESDAY NIGHT ARE EXPECTED TO DROP TO THE 30S. OVER SOUTHCENTRAL TEXAS WARM TEMPERATURES IN THE 80S THIS AFTERNOON WILL FALL TO THE 40S TONIGHT ALONG WITH NORTH WINDS OF 20 TO 30 MPH. TUESDAYS HIGH IS EXPECTED TO BE IN THE LOW 50S WITH NORTH WINDS OF 20 TO 30 MPH CONTINUING. LOWS TUESDAY NIGHT ARE EXPECTED IN THE 30S. THE COLD AND WINDY WEATHER WILL PRODUCE MODERATE LIVESTOCK COLD STRESS TONIGHT AND TUESDAY. HERDS SHOULD BE GIVEN HIGH ENERGY FEED...AND YOUNG...SICK OR EXPECTANT ANIMALS WILL NEED EXTRA CARE. IF POSSIBLE... LOCATE HERDS IN AREAS OFFERING THE BEST PROTECTION FROM NORTHERLY WINDS. IN ADDITION...NEWLY SHORN SHEEP AND GOATS SHOULD BE SHELTERED. POULTRY MANAGERS SHOULD PREPARE FOR A SUDDEN CHANGE TO COLD AND WINDY WEATHER LATE TONIGHT. HEATERS WILL BE NEEDED FOR MUCH OF THE TIME FROM LATE TONIGHT INTO WEDNESDAY. POULTRY HOUSES WILL NEED TO BE TIGHTENED UP TO COUNTERACT GUSTY WINDS.
Special weather statement, Mar 20, 3:40 PM CST, 4 hours 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 340 PM CST MON MAR 20 1989 ...COLDER WEATHER ON ITS WAY AFTER THE WARM WEATHER WE HAVE TODAY... COLD AND WINDY WEATHER IS EXPECTED TONIGHT AND TUESDAY IN THE TEXAS HILL COUNTRY AND SOUTHCENTRAL TEXAS. A STRONG COLD FRONT IN NORTH AND NORTHWEST TEXAS WILL MOVE INTO THE HILL COUNTRY AND SOUTHCENTRAL TEXAS THIS EVENING. THE COLD FRONT IS FORECAST TO MOVE INTO THE NORTHWEST GULF OF MEXICO TUESDAY...LEAVING UNSEASONABLY COLD WEATHER OVER SOUTH TEXAS FOR LATE MARCH. DAMP AND CHILLY WEATHER COULD COME LATER TONIGHT OR TUESDAY IF RAIN DEVELOPS. AT THE PRESENT TIME THERE IS A 20 PERCENT CHANCE OF RAIN IN THE FORECAST TONIGHT...INCREASING TO 30 PERCENT TUESDAY. IN THE HILL COUNTRY TEMPERATURES ARE FORECAST TO FALL TO NEAR 40 TONIGHT. WITH NORTH WINDS OF 20 TO 30 MPH WITH ...THE WIND CHILL INDEX WILL BE IN THE TEENS OR POSSIBLY SINGLE DIGITS. AS A RESULT A WIND CHILL ADVISORY IS IN EFFECT TONIGHT FOR THE HILL COUNTRY. HIGH TEMPERATURES TUESDAY ARE EXPECTED TO BE NEAR 50 ALONG WITH STRONG NORTH WINDS OF 20 TO 30 MPH. TEMPERATURES TUESDAY NIGHT ARE EXPECTED TO DROP TO THE 30S. OVER SOUTHCENTRAL TEXAS WARM TEMPERATURES IN THE 80S THIS AFTERNOON WILL FALL TO THE 40S TONIGHT ALONG WITH NORTH WINDS OF 20 TO 30 MPH. TUESDAYS HIGH IS EXPECTED TO BE IN THE LOW 50S WITH NORTH WINDS OF 20 TO 30 MPH CONTINUING. LOWS TUESDAY NIGHT ARE EXPECTED IN THE 30S. THE COLD AND WINDY WEATHER WILL PRODUCE MODERATE LIVESTOCK COLD STRESS TONIGHT AND TUESDAY. HERDS SHOULD BE GIVEN HIGH ENERGY FEED...AND YOUNG...SICK OR EXPECTANT ANIMALS WILL NEED EXTRA CARE. IF POSSIBLE... LOCATE HERDS IN AREAS OFFERING THE BEST PROTECTION FROM NORTHERLY WINDS. IN ADDITION...NEWLY SHORN SHEEP AND GOATS SHOULD BE SHELTERED. POULTRY MANAGERS SHOULD PREPARE FOR A SUDDEN CHANGE TO COLD AND WINDY WEATHER LATE TONIGHT. HEATERS WILL BE NEEDED FOR MUCH OF THE TIME FROM LATE TONIGHT INTO WEDNESDAY. POULTRY HOUSES WILL NEED TO BE TIGHTENED UP TO COUNTERACT GUSTY WINDS. ALL OTHER OUTDOOR INTERESTS IN SOUTH TEXAS...INCLUDING CAMPERS AND VACATIONERS ON SPRING BREAK...SHOULD BE PREPARED FOR COLD AND WINDY WEATHER.
Special weather statement, Mar 20, 4:29 PM CST, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 420 PM CST MON MAR 20 1989 SHOWERS AND THUNDERSTORMS DEVELOPING ALONG COLD FROM NORTH OF AUSTIN. JUST AFTER 4 PM RADAR INDICATED A LINE OF MOSTLY SHOWERS DEVELOPING ALONG AND NEAR THE COLD FRONT FROM NEAR LLANO TO NEAR TEMPLE AND SHOWERS AND THUNDERSTORMS BETWEEN WACO AND DALLAS. THIS LINE OF SHOWERS AND THUNDERSTORMS COULD CONTINUE DEVELOPING AND MOVE THROUGH THE AUSTIN AND CENTRAL TEXAS AREA DURING THE EVENING ALONG WITH A COLD FRONT.
Special weather statement, Mar 20, 5:52 PM CST, 2 hours 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 545 PM CST MON MAR 20 1989 ...A SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF THE HILL COUNTRY EXTENDING NORTHEAST INTO CENTRAL TEXAS... A FAST MOVING COLD FRONT IS RAPIDILY MOVING TOWARDS THE SAN ANTONIO AREA. THE COLD FRONT...ALONG ITS LEADING EDGE...HAS DEVELOPED A LINE OF SHOWERS AND THUNDERSTORMS. THE FRONT AT THIS TIME IS LOCATED FROM JUST NORTHWEST OF AUSTIN TO NEAR KERRVILLE TO NEAR DEL RIO. WHILE THE MOST INTENSE AND SEVERE THUNDERSTORMS ARE EXPECTED TO FORM TO THE NORTH OF THE SAN ANTONIO AREA THERE IS A POSSIBILITY OF BRIEF HEAVY RAINS..SMALL HAIL...AND STRONG GUSTY WINDS UP TO 50 MPH AND DANGEROUS LIGHTNING. THE FRONT IS EXPECTED TO MOVE INTO THE BEXAR COUNTY AREA AROUND 730 PM CST. ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED.
Special weather statement, Mar 20, 6:17 PM CST, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 610 PM CST MON MAR 20 1989 A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR TRAVIS AND MOST SUROUNDING COUNTIES IN CENTRAL TEXAS. THIS WATCH IS IN EFFECT INTIL 11 PM CST THIS EVENING. A SEVERE THUNDERSTORM WARNING WAS BEEN ISSUED FOR MILAM COUNTY. A THUNDERSTORM THAT PRODUCED 3/4 INCH HAIL AS IT MOVED ACROSS BELL COUNTY HAS NOW MOVED INTO MILAM COUNTY. THIS SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 7 PM. WEATHER RADAR INDICATED A FAST MOVING LINE OF THUNDERSTORMS FROM EAST OF THE WACO AREA SOUTHWESTWARD ACROSS GEORGETOWM AND JOHNSON CITY. THE STRONGEST THUNDERSTORMS WERE NORTH OF THE AUSTIN AREA HOWEVER THIS LINE OF THUNDERSTORMS COULD PRODUCE STRONG GUSTY WINDS, HAIL, AND HEAVY RAIN IN THE AUSTIN AND CENTRAL TEXAS DURNING THE NEXT FEW HOURS HOURS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 6:46 PM CST | Severe Thunderstorm Warning | EWX | Hays, Travis | 34 min |
| Mar 20, 7:02 PM CST | Severe Thunderstorm Warning | EWX | Lee | 58 min |
| Mar 20, 10:38 PM CST | Severe Thunderstorm Warning | EWX | Karnes | 52 min |
| Mar 21, 6:45 AM CST | Severe Thunderstorm Warning | EWX | Travis | 60 min |
| Mar 21, 7:29 AM CST | Severe Thunderstorm Warning | EWX | Bastrop, Lee, Travis, Williamson | 46 min |
| Mar 21, 7:29 AM CST | Severe Thunderstorm Warning | EWX | Milam | 46 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.