Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 59, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 15, 1987, 3:45 AM CDT for Uvalde County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- May 15, 1987, 3:45 AM CDT (08:45 UTC)
- Expired
- May 15, 1987, 4:45 AM CDT
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Uvalde 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 00:00Z, 8.8 hours before the alert went out and 104 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
- 3535 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 150841
SVRSAT
TXC463-150945-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
345 AM CDT FRI MAY 15 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 445 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH TEXAS
...UVALDE
AT 340 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A VERY
INTENSE THUNDERSTORM OVER WESTERN UVALDE COUNTY ABOUT 10 MILES WEST
OF THE CITY OF UVALDE. MOVEMENT WAS EAST AT 10 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 HOME OR
BUILDING AWAY FROM DOORS AND WINDOWS. REFRAIN FROM USING ELECTRICAL
APPLIANCES.
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVIC<E 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 14, 11:09 PM CDT, 4 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 1107 PM CDT THU MAY 14 1987 VERY HEAVY THUNDERSTORMS OVER MEXICO AROUND 30 MILES SOUTHWEST OF DEL RIO ARE BUILDING SLOWLY TO THE NORTHEAST. IF THESE THUNDERSTORMS CONTINUE TO BUILD TO THE NORTHEAST...THERE IS A POSSIBILITY THAT A STORM COULD MOVE INTO THE CITY OF DEL RIO SOMETIME AFTER MIDNIGHT TONIGHT. STRONG GUSTY WINDS...LOCALLY HEAVY RAIN...FREQUENT LIGHTNING AND SMALL HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS. OTHER THUNDERSTORMS CONTINUE OVER MEXICO TO THE WEST AND SOUTHWEST OF EAGLE PASS. LITTLE MOVEMENT WAS NOTED OF THE INDIVIDUAL THUNDERSTORMS ALTHOUGH THE AREA OF THUNDERSTORM ACTIVITY APPREARS TO BE 9BUILDING TO THE NORTH AND NORTHEAST.
Special weather statement, May 15, 2:00 AM CDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 201 AM CDT FRI MAY 15 1987 ...THUNDERSTORMS OBSERVED IN THE DEL RIO AREA... AT 200 AM CDT THUNDERSTORMS WITH RAINSHOWERS AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO INTERNATIONAL AIRPORT. PEA SIZE HAIL WAS REPORTED DURING THE PAST HOUR FROM THUNDERSTORMS IN NORTHERN VAL VERDE COUNTY. THESE STORMS WERE MOVING TO THE EAST AT 15 MPH. HEAVY RAIN AND STRONG GUSTY WINDS ARE ALSO POSSIBLE WITH THESE STORMS.
Special weather statement, May 15, 2:10 AM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 210 AM CDT THU MAY 14 1987 VERY HEAVY THUNDERSTORMS HAVE JUST MOVED INTO WESTERN EDWARDS COUNTY. THESE STORMS ARE MOVING TO THE EAST AT AROUND 15 MPH. THE THUNDERSTORMS ARE VERY NEAR CARTA VALLEY AND SHOULD THEY CONTINUE MOVING AT THIS SPEED THEY WILL BE IN THE ROCKS SPRINGS AREA SOMETIME AFTER 3 AM THIS MORNING. STRONG GUSTY WINDS...LOCALLY HEAVY RAIN...FREQUENT LIGHTNING AND HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS. PERSONS IN EDWARDS COUNTY SHOULD REMAIN ALERT AND BE PREPARED TO TAKE NECESSARY ACTION SHOULD A WARNING BE ISSUED.
Special weather statement, May 15, 2:56 AM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 255 AM CDT FRI MAY 15 1987 ...LINE OF THUNDERSTORMS APPROACHING THE TEXAS HILL COUNTRY... A LINE OF VERY INTENSE THUNDERSTORMS IS MOVING INTO WESTERN SECTIONS OF EDWARDS AND KINNEY COUNTIES THIS MORNING. MOVEMENT OF THE LINE IS EAST AT 15 MILES AN HOUR. WEATHER SERVICE RADAR HAS INDICATED OVER THE PAST FEW MINUTES THAT A FEW OF THE STORMS WITHIN THE LINE...ESPECIALLY OVER WESTERN EDWARDS COUNTY... MAY BE PRODUCING STRONG SURFACE WIND. IN ADDITION...PERIODS OF VERY HEAVY RAIN...FREQUENT LIGHTNING AND SMALL HAIL ARE POSSIBLE AS THEY CONTINUE EAST ACROSS THE COUNTIES. RESIDENTS OF BOTH EDWARDS AND KINNEY COUNTIES SHOULD CLOSELY MONITOR THESE STORMS FOR THE NEXT HOUR OR SO AND BE PREPARED TO TAKE NECESSARY ACTIONS SHOULD A WARNING BE ISSUED. STAY TUNED TO LOCAL RADIO...TV... NOAA WEATHER RADIO.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 11:25 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 65 min |
| May 15, 12:30 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 75 min |
| May 15, 2:14 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 61 min |
| May 15, 4:45 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 30 min |
| May 15, 5:12 AM CDT | Severe Thunderstorm Warning | EWX | Medina | 48 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.