Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 63, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 16, 1987, 8:32 AM CDT for Webb County, Texas. It was in force for 43 min.
The area
The counties it named.
The facts
- Issued
- May 16, 1987, 8:32 AM CDT (13:32 UTC)
- Expired
- May 16, 1987, 9:15 AM CDT
- In force
- 43 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, 1.5 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
- 3199 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 161332
SVRSAT
TXC479-161430-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
832 AM CDT SAT MAY 16 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 930 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...WEBB
AT 830 AM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 10 MILES
WEST OF LAREDO MOVING TOWARD THE EAST-NORTHEAST AT 15 MPH.
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.
PLEASE LISTEN TO YOUR 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 16, 6:45 AM CDT, 1 hour 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 645 AM CDT SAT MAY 16 1987 ...SCATTERED THUNDERSTORMS DEVELOPING OVER EDWARDS PLATEAU... AT 640 AM CDT THIS MORNING...NATIONAL WEATHER SERVICE RADAR INDICATED AN AREA OF SCATTERED THUNDERSTORMS...SOME PRODUCING VERY HEAVY RAIN... FROM JUST EAST OF DEL RIO TO NEAR LEAKEY TO UVALDE AND BACK TO NEAR DEL RIO. THE STORMS WERE MOVING EAST AT NEAR 15 MILES AN HOUR. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL AS THEY CONTINUE ACROSS CENTRAL TEXAS. LOW LYING AREAS AND POORLY DRAINED AREAS MAY EXPERIENCE BRIEF FLOODING AS THE STORMS PASS. IN ADDITION TO THE HEAVY RAIN...SMALL HAIL AND BRIEF GUSTY WINDS ARE ALSO POSSIBLE. MOTORISTS SHOULD USE EXTRA CAUTION WHEN TRAVELING IN OR NEAR THE MORE INTENSE STORMS...VISIBILITY CAN DROP TO NEAR ZERO WITHOUT WARNING IN THE HEAVY RAIN...AND THE GUSTY WINDS AND SLICK ROADS MAY MAKE DRIVING EVEN MORE HNAZARDOUS.
Special weather statement, May 16, 7:30 AM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 730 AM CDT SAT MAY 16 1987 SCATTERED THUNDERSTORMS...SOME WITH VERY HEAVY RAINFALL...WERE INDICATED BY RADAR AT 725 PM FROM NEAR BRACKETTVILLE TO LEAKEY TO UVALDE AND BACK TO BRACKETVILLE. THE STORMS WERE MOVING EAST AT 15 MILES AN HOUR. REPORTS FROM NEAR THE MORE INTENSE THUNDERSTORMS INDICATE VERY HEAVY RAIN AND VERY FREQUENT LIGHTNING STRIKES. NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME...BUT SMALL HAIL AND BRIEF GUSTY WINDS ARE POSSIBLE. BRIEF FLOODING OF LOW LYING AREAS AND POORLY DRAINED AREAS MAY OCCUR AS THE STORMS MOVE EASTWARD...MOTORISTS SHOULD NOT ATTEMPT TO DRIVE INTO AREAS OF HIGH WATER. LIGHTNING IS OF THE MOST FREQUENT CAUSES OF WEATHER RELATED DEATHS IN SOUTH TEXAS. FOR THE BEST PROTECTION FROM LIGHTING...MOVE INDOORS AWAY FROM WINDOWS AND DOORS. THE INSIDE OF A CAR OR BUS OR THE CAB OF A TRUCK GIVES BETTER LIGHTNING PROTECTION THAN BEING OUTSIDE IN THE OPEN. MOST OF ALL...DO NOT STAND NEAR TALL OBJECTS SUCH AS POLES OR TREES AND STAY AWAY FROM METAL SUCH AS METAL SHEDS...FENCES...BIKES...TOOLS OR SPORTS EQUIPMENT. REMEMBER ALSO THAT LIGHTNING CAN BE DISCHARGED FROM THE SIDE OF THE STORM OR EVEN THE HIGH CLOUD BLOWING OUT AHEAD OF THE STORM...IT DOES NOT HAVE TO DEVELOP FROM UNDER THE THUNDERSTORM BASE.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 8:26 AM CDT | Severe Thunderstorm Warning | EWX | Frio, Medina, Uvalde, Zavala | 64 min |
| May 16, 10:03 AM CDT | Severe Thunderstorm Warning | EWX | Kerr | 57 min |
| May 16, 10:48 AM CDT | Severe Thunderstorm Warning | EWX | Bandera | 57 min |
| May 16, 10:59 AM CDT | Severe Thunderstorm Warning | EWX | Kerr | 61 min |
| May 16, 11:34 AM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal, Kendall | 56 min |
| May 16, 11:49 AM CDT | Severe Thunderstorm Warning | EWX | Guadalupe | 56 min |
| May 16, 12:46 PM CDT | Severe Thunderstorm Warning | EWX | Gonzales, Guadalupe | 59 min |
| May 16, 2:38 PM CDT | Severe Thunderstorm Warning | EWX | Karnes | 67 min |
| May 16, 2:40 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt | 65 min |
| May 16, 3:13 PM CDT | Severe Thunderstorm Warning | EWX | Goliad | 32 min |
| May 16, 3:52 PM CDT | Severe Thunderstorm Warning | EWX | Goliad, Victoria | 63 min |
| May 16, 5:36 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 54 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.