Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 142, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 25, 1987, 6:00 PM CDT for Jackson County, Lavaca County, Texas. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- Jun 25, 1987, 6:00 PM CDT (23:00 UTC)
- Expired
- Jun 25, 1987, 7:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Jackson County, TX, Lavaca 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
Victoria Regiona, TX (KVCT), launched 12:00Z, 11.0 hours before the alert went out and 38 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
- 1930 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 810 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KVCT 252257
SVRVCT
TXC239-285-260000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE VICTORIA TX
600 PM CDT THU JUN 25 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL TEXAS
...NORTHERN JACKSON...LAVACA
RADAR SHOWS SEVERE THUNDERSTORMS IN LAVACA AND NORTHERN JACKSON
COUNTIES OF TEXAS. THESE STORMS MOVING SOUTH ABOUT 20 MILES AN
HOUR. THE STRONGEST STORMS ABOUT 15 MILES SOUTH HALLETTSVILLE
TEXAS TO ABOUT 15 MILES NORTHWEST OF GANADO TEXAS.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...FREQUENT LIGHTNING...AND VERY HEAVY RAIN.
HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.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, Jun 25, 3:40 PM CDT, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 340 PM CDT THU JUN 25 1987 ...STRONG THUNDERSTORMS RAPIDLY DEVELOPING IN CENTRAL TEXAS... WITHIN THE PAST HOUR STRONG THUNDERSTORMS HAVE DEV ELOPED IN AND AROUND THE AUSTIN AREA. ANYONE OF THESE THUNDERSTORMS MAY PRODUCE SMALL HAIL...GUSTY WINDS AND BRIEF HEAVY RAINS ALONG WITH DANGEROUS LIGHTNING AS THEY MOVE SOUTHEASTWARD.
Special weather statement, Jun 25, 5:07 PM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 510 PM CDT THU JUN 25 1987 ...STRONG THUNDERSTORMS OVER PORTIONS OF SOUTHCENTRAL TEXAS... STRONG THUNDERSTORMS WITH HEAVY RAIN DEVELOPED DURING THE AFTERNOON AROUND THE AUSTIN AREA. DURING THE PAST HOUR THE STORMS HAVE BUILT SOUTHWARD TO BETWEEN AUSTIN AND SAN ANTONIO. THE STRONGEST STORMS WERE MOVING THROUGH COMAL AND GUADALUPE COUNTIES AND WILL BE MOVING INTO GONZALES COUNTY DURING THE NEXT HOUR. THE NEW BRAUFELS AND SEGUIN AREAS CAN EXPECT HEAVY RAINS WITH POSSIBLE HAIL...GUSTY WINDS AND FREQUENT LIGHTNING AS THESE STORMS PASS.
Special weather statement, Jun 25, 5:38 PM CDT, 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 540 PM CDT THU JUN 25 1987 ...STRONG THUNDERSTORMS IN BEXAR COUNTY... STRONG THUNDERSTORMS WHICH DEVELOPED IN NORTHWEST BEXAR COUNTY WILL MOVE SOUTHWARD ACROSS THE SAN ANTONIO METROPOLITAN AREA DURING THE NEXT HOUR. THE STORMS ARE SPOTTY AND SOME AREAS WILL MISS THE RAIN. HOWEVER...WHERE THE STORMS OCCUR...BRIEF HEAVY RAIN...GUSTY WINDS... SMALL HAIL...AND FREQUENT LIGHTNING CAN BE EXPECTED. THE STORMS WILL NOT LAST VERY LONG...AND MOST THUNDERSTORMS SHOULD HAVE DISSIPATED WITHIN THE NEXT COUPLE OF HOURS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 3:48 PM CDT | Severe Thunderstorm Warning | EWX | Travis | 57 min |
| Jun 25, 4:00 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop | 60 min |
| Jun 25, 4:42 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee, Milam, Travis, Williamson | 63 min |
| Jun 25, 4:42 PM CDT | Severe Thunderstorm Warning | EWX | Burleson | 63 min |
| Jun 25, 4:55 PM CDT | Flash Flood Warning | EWX | Travis | 3 hr |
| Jun 25, 5:42 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 63 min |
| Jun 25, 6:36 PM CDT | Tornado Warning | EWX | Travis | 39 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.