Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 29, 1990, 10:55 PM CST for Val Verde County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Mar 29, 1990, 10:55 PM CST (04:55 UTC)
- Expired
- Mar 29, 1990, 11:55 PM CST
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde 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
Del Rio, TX (KDRT), launched 00:00Z, 4.9 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
- 663 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1799 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDRT 300452 SVRDRT TXC465-300555- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DEL RIO TX 1055 PM CST THU MAR 29 1990 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1155 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY IN SOUTHCENTRAL TEXAS...VAL VERDE AT 1050 PM CST RADAR INDICATED A SEVERE THUNDERSTORM OVER COMSTOCK MOVING TO THE EAST AT 20 MPH. SHERIFFS OFFICE REPORTED MARBLE SIZED HAIL COVERING THE GROUND. BOATERS ON LAKE AMISTAD SHOULD SEEK SAFE HARBOR NOW. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH..DESTRUCTIVE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 200 AM FRIDAY MORNING FOR VAL VERDE COUNTY...
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 29, 8:59 PM CST, 1 hour 56 minutes before
TXZ054-300800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 900 PM CDT THU MAR 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 2AM FRIDAY FOR VAL VERDE COUNTY TXAS... THUNDERSTORMS CONTINUE TO DEVELOP OVER PORTIONS OF VAL VERDE COUNTY AND ARE STARTING TO BUILD TO THE WEST OF DEL RIO. THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...BRIEF HEAVY RAIN... DANGEROUS LIGHTNING STRIKES AND POSSIBLY SMALL HAIL AS THEY MOVE THROUGH THE AREA OVER THE NEXT SEVERAL HOURS. MOTORISTS SHOULD BE ALERT FOR SOME FLOODING OF LOW LYING ROADS AND REDUCED VISIBILITIES IN THE AREA OF THESE STORMS.
Special weather statement, Mar 29, 9:00 PM CST, 1 hour 55 minutes before
TXZ054-300800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 900 PM CDT THU MAR 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 2AM FRIDAY FOR VAL VERDE COUNTY TEXAS... THUNDERSTORMS CONTINUE TO DEVELOP OVER PORTIONS OF VAL VERDE COUNTY AND ARE STARTING TO BUILD TO THE WEST OF DEL RIO. THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...BRIEF HEAVY RAIN... DANGEROUS LIGHTNING STRIKES AND POSSIBLY SMALL HAIL AS THEY MOVE THROUGH THE AREA OVER THE NEXT SEVERAL HOURS. MOTORISTS SHOULD BE ALERT FOR SOME FLOODING OF LOW LYING ROADS AND REDUCED VISIBILITIES IN THE AREA OF THESE STORMS.
Special weather statement, Mar 29, 9:05 PM CST, 1 hour 50 minutes before
TXZ034-036-038>041-300400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO, TX 905 PM CST THU MAR 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE TEXAS HILL COUNTRY... EDWARDS PLATEAU AND MUCH OF SOUTH CENTRAL TEXAS UNTIL 200 AM FRIDAY... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 200 AM FRIDAY MORNING FOR AN AREA OF SOUTH TEXAS ALONG AND WEST OF A LINE FROM GEORGETOWN TO LAGRANGE TO GONZALES TO LAREDO. THE METROPOLITAN AREAS OF SAN ANTONIO AND AUSTIN ARE INCLUDED IN THE WATCH. A LINE OF THUNDERSTORMS DEVELOPED EARLIER THIS EVENING ALONG A COLD FRONT THAT STRETCHED FROM NEAR DALLAS TO JUNCTION TO NORTH OF DEL RIO. THE VERY WARM...MOIST AND UNSTABLE AIRMASS TO THE SOUTH AND EAST OF THE FRONT HAS PROVIDED THE NEEDED FUEL FOR THE STORMS TO DEVELOP. DAMAGING WINDS...LARGE HAIL AND VERY HEAVY RAIN ARE POSSIBLE AS THE STORMS MOVE SOUTHEASTWARD ACROSS THE HILL COUNTRY LATE TONIGHT AND EARLY FRIDAY MORNIN G. ADDITIONAL INFORMATION ON THE MOVEMENT AND DEVELOPMENT OF THESE STORMS WILL BE PROVIDED WHILE THE THREAT OF SEVERE WEATHER CONTINUES.
Special weather statement, Mar 29, 9:54 PM CST, 1 hour 1 minute before
TXZ034-035-038>041-300400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO, TX 955 PM CST THU MAR 29 1990 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR TEXAS HILL COUNTRY... EDWARDS PLATEAU AND MUCH OF SOUTH CENTRAL TEXAS UNTIL 200 AM FRIDAY... THE WATCH IS IN EFFECT ALONG AND WEST OF A LINE FROM GEORGETOWN TO LAGRANGE TO GONZALES TO LAREDO. THE SAN ANTONIO METROPOLITAN AREAS IS INCLUDED IN THE WATCH. AT 950 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED SCATTERED THUNDERSTORMS...SOME WITH HEAVY RAIN...FROM NEAR DEL RIO EASTWARD TO JUST NORTH OF KERRVILLE. REPORTS FROM AROUND THE AREA INDICATED VERY DRAMATIC DISPLAYS OF LIGHTNING AND BRIEF HEAVY RAIN...ALONG WITH WINDS GUSTING TO NEAR 35 MPH IN THE MORE INTENSE STORMS. THE ACTIVITY WAS MOVING TO THE EAST AT 20 MPH. THE THUNDERSTORMS HAD CONTINUED TO FORM ALONG A COLD FRONT STRETCHING FROM DALLAS TO JUNCTION TO DEL RIO. BECAUSE OF THE VERY MOIST AND U|NSTABLE AIRMASS OVER CENTRAL TEXAS...DAMAGING WINDS ARE POSSIBLE IN THESE THUNDERSTORMS.
Special weather statement, Mar 29, 10:23 PM CST, 32 minutes before
TXZ054-300600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1020 PM CDT THU MAR 29 1990 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 2AM FRIDAY FOR VAL VERDE COUNTY TEXAS... THUNDERSTORMS ARE REDEVELOPING OVER NORTHWESTERN VAL VERDE COUNTY AND CONTINUE TO MOVE TO THE EAST AT 20 MPH. THESE STORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...BRIEF HEAVY RAIN... DANGEROUS LIGHTNING STRIKES AND POSSIBLY HAIL AS THEY MOVE THROUGH THE AREA OVER THE NEXT SEVERAL HOURS. PERSONS IN THE AFFECTED AREA SHOULD REMAIN ALERT FOR THREATENING WEATHER AS IT APPROACHES. MOTORISTS SHOULD WATCH FOR FLOODING OF LOW LYING ROADS AND REDUCED VISIBILITIES IN THE VICINITY OF THESE STORMS.
Special weather statement, Mar 29, 10:42 PM CST, 13 minutes before
TXZ034-035-038>041-300500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO, TX 1043 PM CST THU MAR 29 1990 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR TEXAS HILL COUNTRY... EDWARDS PLATEAU AND MUCH OF SOUTH CENTRAL TEXAS UNTIL 200 AM FRIDAY... THE WATCH IS IN EFFECT ALONG AND WEST OF A LINE FROM GEORGETOWN TO LAGRANGE TO GONZALES TO LAREDO. THE SAN ANTONIO METROPOLITAN AREA IS INCLUDED IN THE WATCH. AT 1035 PM CST...SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED IN AN AREA FROM NEAR KERRVILLE TO SONORA TO DEL RIO AND BACK TO KERRVILLE. SOME OF THE STORMS WERE PRODUCING VERY HEAVY RAIN. THEY WERE MOVING TO THE EAST AT 20 MPH. THE MOST RAPIDLY DEVELOPING STORMS...AS WELL AS THE MOST INTENSE RAIN... HAD FORMED BETWEEN JUNO AND DEL RIO IN VAL VERDE COUNTY IN THE PAST HALF HOUR. THESE STORMS APPEARED TO BE FORMING INTO A NORTH-SOUTH ORIENTED LINE AND WOULD LIKELY BE MOVING INTO WESTERN EDWARDS...KINNEY AND MAVERICK COUNTIES WITHIN THE NEXT HOUR. ALTHOUGH NO SEVERE WEATHER HAS YET BEEN REPORTED IN THE THUNDERSTORMS... THE POSSIBILITY EXISTS FOR THEM TO PRODUCING DAMAGING WINDS AND LARGE HAIL. BRIEF HEAVY RAIN...WINDS GUSTING TO 35 MPH AND VERY FREQUENT AND DEADLY LIGHTNING HAVE BEEN REPORTED IN THE ACTIVITY SO FAR.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 11:44 PM CST | Severe Thunderstorm Warning | EWX | Kinney | 61 min |
| Mar 30, 12:46 AM CST | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 59 min |
| Mar 30, 1:47 AM CST | Severe Thunderstorm Warning | EWX | Uvalde, Zavala | 58 min |
| Mar 30, 2:55 AM CST | Severe Thunderstorm Warning | EWX | Zavala | 65 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990
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.