Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 45, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 1987, 10:17 AM CDT for Dimmit County, Texas. It was in force for 73 min.
The area
The counties it named.
The facts
- Issued
- May 4, 1987, 10:17 AM CDT (15:17 UTC)
- Expired
- May 4, 1987, 11:30 AM CDT
- In force
- 73 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Dimmit 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, 3.3 hours before the alert went out and 149 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 041517 SVRSAT TXC127-041630- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 1017 AM CDT MON MAY 4 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF TEXAS...DIMMIT AT 1010 AM CDT A SEVERE THUNDERSTORM WAS 10 MILES SOUTH OF CARRIZO SPRINGS MOVING TO THE EAST AT ABOUT 15 MPH. FREQUENT LIGHTNING..STRONG DAMAGING WINDS AND LARGE HAIL WILL LIKELY OCCUR IN THIS STORM. IN ADDITION..LOCALLY HEAVY RAINFALL AND FLOODING OFTEN ACCOMPANY SEVERE THUNDERSTORMS. REMEMBER..SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO WARNING. IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE. PLEASE LISTEN TO YOUxR LOCAL RADIO..TV OR NOAA WEATHER RADIO STATION FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.
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, 6:55 AM CDT, 3 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 645 AM CDT MON MAY 4 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 AM CDT THIS MONDAY MORNING FOR HAYS AND CALDWELL COUNTIES... AT 640 AM CDT WEATHER SERVICE RADAR INDICATED MODERATE TO STRONG THUNDERSTORMS OCCURRING ALONG A LINE FROM AUSTIN TO SAN MARCOS TO SAN ANTONIO. DANGEROUS LIGHTNING...BRIEF HEAVY RAIN...SMALL HAIL AND STRONG WINDS WILL LIKELY ACCOMPANY THESE THUNDERSTORMS. OTHER SHOWERS AND THUNDERSTORMS ARE INDICATED FROM NORTH OF WACO TO TEMPLE TO AUSTIN...GENERALLY ALONG INTERSTATE 35. THE LINE OF THUNDERSTORMS MOVING SOUTHEAST AT 20 MPH. PERSONS IN AND NEAR THE WATCH AREA ARE URGED TO LISTERN FOR THE L}ATEST INFORMATION AND POSSIBLE WARNINGS.
Special weather statement, May 4, 7:59 AM CDT, 2 hours 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 800 AM CDT MON MAY 4 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 AM CDT THIS MONDAY MORNING FOR HAYS AND CALDWELL COUNTIES... AT 750 AM CDT WEATHER SERVICE RADAR INDICATED MODERATE TO STRONG THUNDERSTORMS OCCURRING BETWEEN DRIPPING SPRINGS AND SAN MARCOS AND EAST OF AUSTIN FROM ELGIN TO BASTROP. AN AREA OF WIDESPREAD LIGHT RAIN AND THUNDERSHOWERS WERE INDICATED FROM EAST WACO TO GEORGETOWN TO AUSTIN TO SOUTH OF SAN ANTONIO. THIS AREA EXTENDS EASTWARD TO NEAR HOUSTON. AT THIS TIME NO SEVERE WEATHER HAS BEEN REPORTED TO THIS OFFICE. MOVEMENT IS TO THE EAST 20 MPH. PERSONS IN AND NEAR THE WATCH AREA ARE URGED TO LISTERN FOR THE LATEST INFORMATION AND POSSIBLE WARNINGS.
Special weather statement, May 4, 8:10 AM CDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 800 AM CDT MON MAY 2 1987 ...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF SOUTH CENTRAL TEXAS UNTIL 11 AM... WHAT STARTED AS TWO INDIVIDUAL THUNDERSTORMS IN VAL VERDE AND EDWARDS COUTIES BLOSSOMED INTO A SOLID LINE OF THUNDERSTORMS. SOME OF THESE STORMS PRODUCED HAIL. MOST HAD BRIEF HEAVY DOWNPOURS WITH AMOUNTS UP TO TWO INCHES IN A COUPLE OF HOURS. ONE THUNDERSTORM THAT PASSED OVER THE SAN ANTONIO AIRPORT THIS MORNING GAVE A WIND GUST OF 55 MPH. THE BAND OF SHOWERS AND THUNDERSTORMS EXTENDS FROM MAVERICK COUNTY ALONG THE RIO GRANDE NORTHEAST TO BEYOND AUSTIN.THIS LINE HAS WEAKENED DURING THE MORNING BUT ISOLATED INTENSE THUNDERSTORMS CONTINUE TO REDEVELOP ALONG THE WESTERN END OF THIS LINE. ALL OF THIS MUCH NEEDED RAIN IS ASSOCIATED WITH A TROUGH OF LOW PRESSURE MOVING EAST THROUGH TEXAS. MORE RAIN AND THUNDERSTORMS CAN BE EXPECTED THROUGH TUESDAY. STAY TUNED TO YOUR NOAA WEATHER RADIO, LOCAL TV STATION FOR MORE INFORMATION ON ANY WEATHER THAT CAN AFFECT YOU.
Special weather statement, May 4, 8:50 AM CDT, 1 hour 27 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, 1 hour 15 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, 47 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.
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, 11:49 AM CDT | Severe Thunderstorm Warning | EWX | Webb | 56 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.