Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 25, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 26, 1990, 5:18 AM CDT for Bexar County, Comal County, Guadalupe County, Texas. It was in force for 42 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
- Apr 26, 1990, 5:18 AM CDT (10:18 UTC)
- Expired
- Apr 26, 1990, 6:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bexar County, TX, Comal County, TX, Guadalupe 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 26, 5:30 AM CDT | Thunderstorm Wind 0 | Comal, 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
Corpus Christi, TX (KCRP), launched 00:00Z, 10.3 hours before the alert went out and 227 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
- 2660 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 8.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 261022
SVRSAT
TXC029-091-187-261100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
518 AM CDT THU APR 26 1990
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH TEXAS
...BEXAR...COMAL...GUADALUPE
HONDO RADAR INDICATED A LINE OF THUNDERSTORMS FROM WEST OF NEW
BRAUNFELS TO SAN ANTONIO MOVING TO THE EAST AT 20 MILE AN HOUR. GOLF
BALL SIZE HAIL WAS REPORTED BY THE SAN ANTONIO POLICE DEPATMENT ON THE
NORTHWEST SIDE OF THE CITY AND A ROOF WAS BLOWN OFF THE FOUNTAINWOOD
APARTMENTS.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
WHEN A THUNDERSTORM THREATENS...SEEK SHELTER INSIDE A HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS. REFRAIN FROM USING ELECTRICAL
APPLIANCES.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 26, 1:13 AM CDT, 4 hours 5 minutes before
TXZ054-260810- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 115 AM CDT THU APR 26 1990 ...THE TORNADO WATCH FOR VAL VERDE COUNTY HAS BEEN CANCELLED... ...A FLASH FLOOD WATCH IS IN EFFECT FOR VAL VERDE COUNTY UNTIL 600 AM CDT... AT 110 AM CDT THUNDERSTORMS WITH RAIN AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO INTERNATIONAL AIRPORT. SEVERAL STREETS AND LOW LYING AREAS ARE STILL FLOODED IN DEL RIO AND EASTERN VAL VERDE COUNTY. RADAR ALSO INDICATED THUNDERSTORMS THROUGHOUT VAL VERDE COUNTY. MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. REMEMBER...A FLASH FLOOD WATCH MEANS THAT FLOODING IS POSSIBLE IN AND NEAR THE WATCH AREA. PEOPLE IN THE WATCH AREA ARE URGE D TO CHECK PREPAREDNESS REQUIREMENTS...KEEP INFORMED AND BE READY TO MOVE TO SAFETY IF HEAVY RAIN OR FLOODING IS REPORTED OR OBSERVED.
Special weather statement, Apr 26, 1:52 AM CDT, 3 hours 26 minutes before
TXZ030-034>036-260830- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE AUSTIN TX 145 AM CDT THU APR 26 1990 ...TORNDAO WATCH CONTINUES IN EFFECT TILL 3 AM THURSDAY MORNING FOR... MILLS...SAN SABA...LAMPASAS...GILLESPIE...LLANO...BURNET AND BLANCO. ...FLASH FLOOD WATCH THROUGH TONIGHT FOR THE HILL COUNTRY FOR THE ABOVE COUNTIES. AT 130 AM WEATHER RADAR SHOWED AN AREA OF SHOWERS AND A FEW STRONG THUNDERSTORMS ABOUT 20 MILE WIDE FROM GEORGETOWN TO WEST OF WACO. THE STRONGEST STORMS WERE NEAR GEORGETOWN AND TEMPLE. THESE STORMS COULD PRODUCE SMALL HAIL...FREQUENT LIGHTNING AND STRONG GUSTY WINDS. A LARGE AREA OF SHOWERS AND THUNDERSTORMS CONTINUES FROM EAST OF DEL RIO TO 75 MILES NORTHWEST OF AUSTIN TO SOUTHWEST OF FORT WORTH. AN OTHER LIGHT RAIN AREA WAS NOTED FROM JOHNSON CITY TO SAN ANTONIO. MOVEMENT OF ALL THE RAIN ACTIVITY IS TO THE NORTH AT 25 MPH. THE AUSTIN METRO AREA SHOULD CONTINUE TO SEE LIGH^T RAIN AND A FEW THUNDERSTORMS WITHIN THE NEXT HOUR. KEEP ALERT TO THE LATEST WEATHER BULLETINS AND ADVISORIES IN THE EVENT A WARNING IS ISSUED.
Special weather statement, Apr 26, 3:35 AM CDT, 1 hour 43 minutes before
TXZ030-034>036-261030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE AUSTIN TX 330 AM CDT THU APR 26 1990 ...TORNDAO WATCH HAS EXPIRED FOR MILLS...SAN SABA...LAMPASAS... GILLESPIE...LLANO...BURNET AND BLANCO... ...FLASH FLOOD WATCH HAS BEEN REDEFINED TO INCLUDE THE ENTIRE CENTRAL TEXAS AREA AND ADJACENT HILL COUNTY... WEATHER RADAR SHOWED A LARGE AREA OF SHOWERS AND STRONG THUNDERSTORMS PRODUCING HEAVY RAIN FROM WEST OF HONDO TO JUNCTION AND NORTHEST TO SAN SABA AMD NORTHERN MILLS COUNTY. A LIGHT RAIN AREA WITH A FEW IMBEDDED SHOWERS WERE FOUND FROM LAKE BUCHANAN...JOHNSON CITY...SAN ANTONIO...LA GRANGE...BASTROP...GEORGE- TOWN AND BACK TO LAKE BUCHANAN. MOVEMENT OF THE INDIVIDUAL CELLS IS TO THE NORTH WHILE THE AREA IS SLOWLY DRIFTING TO THE EAST. PEOLPE IN GILLESPIE...SAN SABA...AND MILLS COUNTIES SHOULD MONITOR FOR POSSIBLE HEAVY RAINS AND FLASH FLOODING. KEEP ALERT TO THE LATEST WEATHER BULLETINS AND ADVISORIES IN THE EVENT A WARNING IS ISSUED.
Special weather statement, Apr 26, 4:32 AM CDT, 46 minutes before
TXZ030-034>036-261030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE AUSTIN TX 430 AM CDT THU APR 26 1990 ...FLASH FLOOD WATCH INCLUDES THE ENTIRE CENTRAL TEXAS AREA AND ADJACENT HILL COUNTY... AT 410 AM WEATHER RADAR SHOWED A LARGE AREA OF SHOWERS AND STRONG THUNDER- STORMS PRODUCING HEAVY RAIN FROM HONDO TO FREDERICKSBURG...SAN SABA AND MILLS COUNTY. THE STRONGER STORMS WERE SOUTH OF FREDERICKSBURG...NORTH OF LAMPASAS AND NEAR SAN SABA. A LIGHT RAIN AREA WITH A FEW IMBEDDED SHOWERS WERE FOUND FROM AUSTIN TO SAN ANTONIO. MOVEMENT OF THE INDIVIDUAL CELLS IS TO THE NORTH WHILE THE AREA IS SLOWLY DRIFTING TO THE EAST. PEOPLE IN GILLESPIE...SAN SABA...MILLS mAND LAMPASAS COUNTIES SHOULD SHOULD MONITOR FOR ANY TYPE OF HEAVY RAINS WHICH COULD CAUSE FLASH FLOODING. KEEP ALERT TO THE LATEST WEATHER BULLETINS AND ADVISORIES IN THE EVENT A WARNING IS ISSUED.
Special weather statement, Apr 26, 5:07 AM CDT, 11 minutes before
TXZ034-035-038-039-261200- BULLETIN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 505 AM CDT THU APR 26 1990 ...THUNDERSTORMS MOVING OVER SAN ANTONIO... AT 505 AM AN AREA OF SHOWERS AND THUNDERSTORMS WAS FROM BLANCO TO SAN ANTONIO TO THREE RIVERS MOVING EAST AT 20 MILES AN HOUR. THESE SHOWERS AND THUNDERSTORMS WERE PRODUCING PERIODS OF MODERATE TO HEAVY RAIN...WINDS OF 20 TO 36 MILES AN HOUR...FREQUENT LIGHTNING... AND SMALL HAIL. THEY WILL PERISIST OVER THE SAN ANTONIO AREA FROM 5 TO 6 AM THIS MORNING. MOTORISTS DRIVING EARLY THIS MORNING SHOULD BE VERY CAREFUL AT OR AVOID LOW WATER CROSSSINGS WHERE MINOR FLOODING MAY OCCUR FROM BRIEF PERIODS OF HEAVY RAIN. IN ADDITION...THE WET ROADS AND HIGHWAYS WILL MAKE FOR SLIPPERY DRIVING. AREAS TO THE EAST OF SAN ANTONIO WILL BE AFFECTED BY THESE THUNDERSTORMS IN THE NEXT FEW HOURS. RAINFALL AT THE AIRPORT SO FAR HAS BEEN SEVEN TENTHS OF AN INCH AS OF 508 AM CDT.
Special weather statement, Apr 26, 5:08 AM CDT, 10 minutes before
TXZ034-035-038-039-261200- BULLETIN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 508 AM CDT THU APR 26 1990 ...THUNDERSTORMS MOVING OVER SAN ANTONIO... AT 505 AM AN AREA OF SHOWERS AND THUNDERSTORMS WAS FROM BLANCO TO SAN ANTONIO TO THREE RIVERS MOVING EAST AT 20 MILES AN HOUR. THESE SHOWERS AND THUNDERSTORMS WERE PRODUCING PERIODS OF MODERATE TO HEAVY RAIN...WINDS OF 20 TO 36 MILES AN HOUR...FREQUENT LIGHTNING... AND SMALL HAIL. THEY WILL PERISIST OVER THE SAN ANTONIO AREA FROM 5 TO 6 AM THIS MORNING. MOTORISTS DRIVING EARLY THIS MORNING SHOULD BE VERY CAREFUL AT OR AVOID LOW WATER CROSSSINGS WHERE MINOR FLOODING MAY OCCUR FROM BRIEF PERIODS OF HEAVY RAIN. IN ADDITION...THE WET ROADS AND HIGHWAYS WILL MAKE FOR SLIPPERY DRIVING. AREAS TO THE EAST OF SAN ANTONIO WILL BE AFFECTED BY THESE THUNDERSTORMS IN THE NEXT FEW HOURS. RAINFALL AT THE AIRPORT SO FAR HAS BEEN SEVEN TENTHS OF AN INCH AS OF 508 AM CDT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:35 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 55 min |
| 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, 5:54 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.