Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 20, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 25, 1990, 8:35 PM CDT for Val Verde County, Texas. It was in force for 55 min. 2 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
- Apr 25, 1990, 8:35 PM CDT (01:35 UTC)
- Expired
- Apr 25, 1990, 9:30 PM CDT
- In force
- 55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 25, 8:49 PM CDT | Thunderstorm Wind 57 | Val Verde, TX | |
| Apr 25, 9:22 PM CDT | Thunderstorm Wind 98 | Val Verde, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 1.6 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
- 2382 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDRT 260132 SVRDRT TXC465-260230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DEL RIO TX 835 PM CDT WED APR 25 1990 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY IN SOUTHCENTRAL TEXAS...VAL VERDE AT 830 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM WITH VERY HEAVY RAIN AND POSSIBLE HAIL 5 MILES SOUTHWEST OF DEL RIO MOVING TO THE EAST AT 20 MPH. SEVERAL REPORTS HAVE BEEN RECEIVED DURING THE PAST 5 MINUTES OF PEA SIZE HAIL IN THE DEL RIO AREA. 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 TORNADO WATCH IS IN EFFECT UNTIL 900 PM CDT TONIGHT FOR VAL VERDE COUNTY. R1EMEMBER ...SEVERE THUNDERSTORMS CAN AND OCCASIONAL DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
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, Apr 25, 4:55 PM CDT, 3 hours 40 minutes before
TXZ030-034-251800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 450 PM CDT TUE APR 25 1990 ...TORNDAO WATCH IS IN EFFECT UNTIL 9 PM THIS EVENING FOR GILLESPIE ...LAMPASAS...MILLS...SAN SABA...BURNET AND LLANO COUNTIES. ...FLASH FLOOD WATCH IS IN EFFECT FOR MOST OF THE CENTRAL TEXAS AREA. THIS INCLUDES THE AUSTIN AND SURROUNDING AREAS. WEATHER RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS FROM BRADY AND LAMPASAS NORTHIWARD TO NEAR FORT WORTH. OTHER WIDELY SCATTERED TO ISOLATED SHOWERS AND THUNDERSTORMS WAS FROM WEST OF SAN ANTONIO NORTHEAST ACROSS THE AUSTIN AND CENTRAL TEXAS AREAS TO EAST OF TEMPLE. THUNDERSTORMS WERE MOVING NORTH AT NEAR 25 MPH.
Special weather statement, Apr 25, 5:36 PM CDT, 2 hours 59 minutes before
TXZ054-260000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 540 PM CDT WED APR 25 1990 ...A TORNADO WATCH IS IN EFFECT FOR VAL VERDE COUNTY UNTIL 900 PM CDT TONIGHT... AT 535 PM CDT RADAR INDICATED THUNDERSTORMS 10 MILES SOUTHWEST AND 30 MILES NORTHWEST OF DEL RIO. THESE STORMS WERE MOVING TO THE NORTHEAST AT 15 MPH. HAIL...HEAVY RAIN...DAMAGING WINDS AND FREQUENT DANGEROUS LIGHTNING ARE POSSIBLE WITH THESE STORMS. BOATERS ON LAKE AMISTAD SHOULD KEEP A LOOKOUT AND BE PREPARED TO SEEK SAFE HARBOR. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 25, 6:06 PM CDT, 2 hours 29 minutes before
TXZ034-035-038-039-054-262400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 605 PM CDT WED APR 25 1990 ...A TORNADO WATCH IS IN EFFECT FOR EDWARDS KERR BANDERA REAL KINNEY AND UVALDE COUNTIES UNTIL 900 PM TONIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR KENDALL COUNTY UNTIL MIDNIGHT... A STRONG UPPER LEVEL DISTURBANCE IS NORTHERN NEW MEXICO WILL MOVE SLOWLY EASTWARD THROUGH TONIGHT. THE SYSTEM WILL PRODUCE SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS AHEAD OF IT OVER SOUTH CENTRAL TEXAS TONIGHT. THE VERY WARM...MOIST AND UNSTABLE AIR OVER SOUTH TEXAS WILL CONTINUE TO PROVIDE THE NEEDED FUEL FOR THE THUNDERSTORMS...WITH SOME POSSIBLY REACHING SEVERE LEVELS AND PRODUCING HEAVY RAINFALL OVER PORTIONS OF THE TEXAS HILL COUNTRY...EDWARDS PLATEAU AND ADJACENT AREAS. AT 600 PM...WEATHER SERVICE RADAR INDICATED SCATTERED SHOWERS AND THUNDERSTORMS FROM JUNCTION TO UVALDE TO JUST WEST OF SAN ANTONIO... NORTHWARD TO NEAR JOHNSON CITY. THE STORMS WERE MOVING TO THE NORTH AT 15 MPH. NO REPORTS OF FLOODING OR SEVERE WEATHER HAS BEEN REPORTED IN SOUTH CENTRAL TEXAS SO FAR THIS EVENING. SHOULD SEVERE WEATHER BE SIGHTED... IT SHOULD BE REPORTED AS QUICKLY AS POSSIBLE TO THE NEAREST LAW ENFORCEMENT AGENCY FOR LOCAL DISSEMINATION AND RELAY TO THE NATIONAL WEATHER SERVICE.
Special weather statement, Apr 25, 7:05 PM CDT, 1 hour 30 minutes before
TXZ034-035-038-039-054-260100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 705 PM CDT WED APR 25 1990 ...A TORNADO WATCH IS IN EFFECT FOR EDWARDS KERR BANDERA REAL KINNEY AND UVALDE COUNTIES UNTIL 900 PM TONIGHT... ...A FLASH FLOOD WATCH IS IN EFFECT FOR KENDALL COUNTY UNTIL MIDNIGHT... SCATTERED SHOWERS AND THUNDERSTORMS WERE INDICATED BY NATIONAL WEATHER SERVICE RADAR AT 700 PM TONIGHT OVER WESTERN VAL VERDE COUNTY...WEST OF THE CITY OF DEL RIO. WIDELY SCATTERED SHOWERS WERE LOCATED IN AN AREA FROM HONDO TO LEAKEY TO JUNCTION. ALL ACTIVITY WAS MOVING TO THE NORTH AT 25 MPH. A THREAT OF SEVERE THUNDERSTORMS...WITH POSSIBLE TORNADOES...AND HEAVY RAIN EXISTS TONIGHT OVER A LARGE PORTION OF THE TEXAS HILL COUNTRY... EDWARDS PLATEAU AND ADJACENT SECTIONS OF SOUTH CENTRAL TEXAS. PERSONS IN AND NEAR THE THREAT AREA ARE URGED TO KEEP AWARE OF THIS POSSIBILITY AND MONITOR THE LATEST WEATHER ADVISORIESK AND STATEMENTS.
Special weather statement, Apr 25, 7:09 PM CDT, 1 hour 26 minutes before
TXZ054-260200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 710 PM CDT WED APR 25 1990 ...A TORNADO WATCH IS IN EFFECT FOR VAL VERDE COUNTY UNTIL 900 PM CDT TONIGHT... AT 705 PM CDT RADAR INDICATED THUNDERSTORMS WITH HEAVY RAIN FROM 10 MILES WEST TO 50 MILES NORTHWEST OF DEL RIO. THESE STORMS WERE MOVING TO THE NORTH AT 25 MPH. DO NOT STAY IN A VEHICLE OR MOBILE HOME AS THEY ARE EASILY TOSSED AND ROLLED BY HIGH WINDS. BOATERS ON LAKE AMISTAD SHOULD SEEK SAFE HARBOR NOW. REMEMBER...MOST WEATHER RELATED DEATHS IN SOUTH TEXAS ARE DUE TO LIGHTNING AND FLASH FLOODING. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND PCLOSE TO THE WATCH AREA. PEOPLE IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 25, 7:44 PM CDT, 51 minutes before
TXZ030-034-260230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 740 PM CDT TUE APR 25 1990 ...TORNDAO WATCH IS IN EFFECT UNTIL 9 PM THIS EVENING FOR GILLESPIE ...LAMPASAS...MILLS...SAN SABA...BURNET AND LLANO COUNTIES. ...FLASH FLOOD WATCH IS IN EFFECT FOR MOST OF THE CENTRAL TEXAS AREA. THIS INCLUDES THE AUSTIN AND SURROUNDING AREAS. WEATHER RADAR INDICATED SCATTERED STRONG THUNDERSTORMS AND HEAVY RAIN FROM NEAR SAN SABA ACROSS MILLS COUNTY TO WEST OF STEPHENVILLE. ALSO WEST OF MENARD AND BRADY. OTHER WIDLY SCATTERED LIGHT TO MODERATE SHOWERS WAS OVER THE CENTRAL TEXAS AREA WITHIN 50 TO 75 MILES OF AUSTIN. THUNDERSTORMS WERE MOVING NORTH AT NEAR 25 MPH.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:44 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 61 min |
| Apr 25, 9:34 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 56 min |
| Apr 25, 9:41 PM CDT | Tornado Warning | EWX | Kinney | 64 min |
| Apr 25, 9:45 PM CDT | Tornado Warning | EWX | Val Verde | 55 min |
| Apr 25, 10:42 PM CDT | Severe Thunderstorm Warning | EWX | Kinney | 63 min |
| Apr 25, 11:25 PM CDT | Flash Flood Warning | EWX | Kinney | 3 hr |
| Apr 26, 12:15 AM CDT | Severe Thunderstorm Warning | EWX | Real | 60 min |
| Apr 26, 5:18 AM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal, Guadalupe | 42 min |
| Apr 26, 5:54 AM CDT | Severe Thunderstorm Warning | EWX | Hays | 66 min |
| Apr 26, 6:00 AM CDT | Severe Thunderstorm Warning | EWX | Comal, Guadalupe | 30 min |
| Apr 26, 6:52 AM CDT | Flash Flood Warning | EWX | Mills | 2 hr |
| Apr 26, 9:03 AM CDT | Flash Flood Warning | EWX | Mills | 3 hr |
| Apr 26, 12:05 PM CDT | Tornado Warning | EWX | Victoria | 25 min |
| Apr 26, 12:33 PM CDT | Tornado Warning | EWX | Victoria | 57 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.