Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 1987, 11:49 AM CDT for Webb County, Texas. It was in force for 56 min.
The area
The counties it named.
The facts
- Issued
- May 4, 1987, 11:49 AM CDT (16:49 UTC)
- Expired
- May 4, 1987, 12:45 PM CDT
- In force
- 56 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Webb 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 12:00Z, 4.8 hours before the alert went out and 232 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
- 2 J/kg
- Mixed-layer CIN
- -303 J/kg
- Mixed-layer LCL
- 1459 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 041649
SVRSAT
TXC479-041745-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1149 AM CDT MON MAY 4 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1245 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...WEBB
AT 1148 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM ABOUT 10 MILES NORTHWEST OF LAREDO MOVING TOWARD THE CITY
AT NEAR 15 MILES AN HOUR.
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 H,OME 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, May 4, 8:50 AM CDT, 2 hours 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 850 AM CDT MON MAY 2 1987 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF SOUTH CENTRAL TEXAS UNTIL 11 AM... ...THE SEVERE THUNDERSTORM WARNING FOR ZAVALA COUNTY HAS EXPIRED... STORMS THAT PRODUCED HAIL...DAMAGING WIND AND VERY HEAVY DOWNPOURS OVER SOUTH CENTRAL TEXAS THIS MORNING CONTINUED AT 845 AM EAST OF A LINE FROM AUSTIN TO FLORESVILLE...PEARSALL AND CRYSTAL CITY. THE STORMS CONTINUED TO MOVE TO THE SOUTHEAST AT 5 TO 10 MILES AN HOUR. THE PUBLIC REPORTED MARBLE SIZED HAIL AND VERY HEAVY RAIN JUST EAST OF FRIO TOWN IN NORTHERN FRIO COUNTY ABOUT 830 AM THIS MORNING. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED OR INDICATED BY RADAR OVER SOUYH CENTRAL TEXAS IN THE PAST HOUR...THE STORM SYSTEM IS STILL VERY STRONG. THE POTENTIAL EXISTS FOR ADDITIONAL HAIL OR DAMAGING WINDS IN THE MORE INTENSE THUNDERSTORMS. BRIEF PERIODS OF HEAVY RAIN ARE ALSO EXPECTED WITH THE STORMS...AS WELL AS VERY FREQUENT AND DANGEROUS LIGHTNING. THE RAIN IS ENDING AND CLOUDS ARE BEGINNING TO DISSIPATE OVER THE HILL COUNTRY AT THIS TIME...INDICATING THE END TO THE THREAT OF SEVERE WEATHER IS CLOSE FOR THE WESTERN PORTION OF THE WATCH AREA.
Special weather statement, May 4, 9:02 AM CDT, 2 hours 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 900 AM CDT MON MAY 4 1987 ...SEVERE THUNDERSTORM WATCH NO LONGER IN EFFECT FOR HAYS AND CALDWELL COUNTIES. AT 855 AM CDT WEATHER SERVICE RADAR INDICATED AN AREA OF WIDESPREAD LIGHT RAIN WITH EMBEBBED SHOWERS AND THUNDERSTORMS ACROSS PORTION OF SOUTH CENTRAL AND SOUTH TEXAS GENERALLY EAST OF A LINE FROM CORSICANA TO AUSTIN TO SAN ANTONIO TO CRYSTAL CITY IN ZAVALA COUNTY. THE STRONGEST )THUNDERSTORM INDICATED NEAR BRENHAN IN WASHINGTON COUNTY. THIS STORM BE ACCOMPANIED BY STRONG DAMAGING WINDS...HAIL AND FREQUENT LIGHTNING. THE THUNDERSTORMS ARE MOVING EAST 20 MPH.
Special weather statement, May 4, 9:30 AM CDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 930 AM CDT MON MAY 4 1987 ...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED ALONG AND NORTHWEST OF A LINE FROM SEGUIN TO SAN ANTONIO TO HONDO... ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A PORTION OF SOUTH CENTRAL TEXAS UNTIL 11 AM... SCATTERED THUNDERSTORMS...SOME WITH VERY HEAVY RAINFALL...CONTINUED OVER THE SOUTHEAST SECTION OF CENTRAL TEXAS AT 925 AM THIS MORNING. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED IN THE PAST HOUR...THE POTENTIAL FOR HAIL...DAMAGING WIND AND HEAVY RAIN CONTINUES. THE WATCH REMAINS IN EFFECT SOUTHEAST OF A LINE FROM FROM GONZALES TO PEARSALL TO CARRIZO SPRINGS. IN ADDITION TO THE HEAVY RAIN...FREQUENT AND VERY DANGEROUS LIGHTNING HAVE ALSO BEEN REPORTED IN THESE STORMS. THE GREATER SAN ANTONIO METROPOLITAN AREA IS NO LONGER IN THE WATCH AREA.
Local storm report, May 4, 11:23 AM CDT, 26 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
1100 AM CDT MON MAY 04 1987
2238 CDT SUNDAY NIGHT MAY 3... LOCAL TV METEOROLOGIST RELAYED REPORT
OF 1 TO 11/4 INCH HAIL AT PFLUGERVILLE.
2240 CDT SUNDAY NIGHT MAY 3... TEXAS DEPARTMENT OF PUBLIC SAFETY
REPORTED WIND DAMAGE AT PFLUGERVILLE.
SHERIFFS OFFICE REPORTED IT LOOKED
LIKE STRAIGHT LINE WINDS.
2240 CDT SUNDAY NIGHT MAY 3... MARBLE TO GOLFBALL SIZE HAIL AT HUTTO.
1200 MIDNIGHT...DPS UNIT NEAR LULING CONFIRMED TWO...TWIN...TORNADOES
ON THE GROUND JUST WEST OF LULING. NO DAMAGE WAS FOUND.
END.Special weather statement, May 4, 11:44 AM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 1145 AM CDT MON MAY 4 1987 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF SOUTH CENTRAL TEXAS UNTIL 400 PM THIS AFTERNOON... ...THE SEVERE THUNDERSTORM WARNING FOR MCMULLEN COUNTY HAS EXPIRED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM THIS AFTERNOON ALONG AND SOUTHEAST OF A LINE FROM GONZALES TO CARIZZO SPRINGS. THE CITY OF SAN ANTONIO IS NOT INCLUDED IN THE WATCH. SCATTERED THUNDERSTORMS CONTINUED IN AN AREA FROM NEAR NEW BRAUNFELS TO EAGLE PASS SOUTHEASTWARD TO NEAR LAREDO...KARNES CITY AND BACK TO NEW BRAUNFELS AT 1140 PM THIS MORNING. RAIN WAS FALLING JUST TO THE SOUTH AND EAST OF THE CITY OF SAN ANTONIO...BUT NOT IN THE CITY ITSELF. ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED IN THE PAST HOUR ACROSS SOUTH CENTRAL TEXAS. HOWECER...WEATHER CONDITIONS REMAIN FAVORABLE FOR ADDITIONAL SEVERE STORMS TO DEVELOP THIS AFTERNOON IN THE WATCH AREA. STORMS THIS MORNING PRODUCED SPOTTY AREAS OF SMALL HAIL ALONG WITH BRIEF GUSTY WINDS AND VERY HEAVY DOWNPOURS. THE THREAT OVER THE WATCH AREA THIS AFTERNOON IS FOR LARGE HAIL AND DAMAGING WINDS. HEAVY RAIN AND DANGEROUS LIGHTNING ARE ALSO EXPECTED WITH THE THUNDERSTORMS.
Special weather statement, May 4, 11:46 AM CDT, 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 1145 AM CDT MON MAY 4 1987 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PORTION OF SOUTH CENTRAL AND SOUTHEAST TEXAS UNTIL 400 PM CDT THIS AFTERNOON. THE ONLY COUNTY IN OUR CENTRAL TEXAS AREA WHICH IS INCLUDED IN THE WATCH IS FAYETTE. FAYETTE COUNTY IS ON THE COLORADO RIVER SOME 50 TO 80 MILES SOUTHEAST OF AUSTIN. OUR LOCAL RADAR INDICATES ONLY LIGHT SHOWERS IN FAYETTE COUNTY AND NO SIGNIFICANT PRECIPITATION IN OTHER AREAS AROUND AUSTIN.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 10:12 PM CDT | Severe Thunderstorm Warning | EWX | Travis | 63 min |
| May 3, 10:37 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 68 min |
| May 3, 11:10 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell | 65 min |
| May 3, 11:44 PM CDT | Tornado Warning | EWX | Caldwell | 61 min |
| May 4, 12:09 AM CDT | Tornado Warning | EWX | Gonzales | 66 min |
| May 4, 12:56 AM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 64 min |
| May 4, 1:39 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 66 min |
| May 4, 2:47 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Edwards, Kerr, Real, Uvalde | 58 min |
| May 4, 2:47 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 58 min |
| May 4, 3:47 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina, Uvalde | 58 min |
| May 4, 3:47 AM CDT | Severe Thunderstorm Warning | EWX | Kendall, Kerr | 58 min |
| May 4, 4:39 AM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina | 66 min |
| May 4, 5:59 AM CDT | Severe Thunderstorm Warning | EWX | Bexar | 61 min |
| May 4, 6:21 AM CDT | Severe Thunderstorm Warning | EWX | Guadalupe, Wilson | 69 min |
| May 4, 6:39 AM CDT | Severe Thunderstorm Warning | EWX | Maverick | 66 min |
| May 4, 7:37 AM CDT | Severe Thunderstorm Warning | EWX | Zavala | 68 min |
| May 4, 10:17 AM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 73 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987
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.