Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 21, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 16, 1987, 9:28 PM CST for Frio County, Texas. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Mar 16, 1987, 9:28 PM CST (03:28 UTC)
- Expired
- Mar 16, 1987, 10:30 PM CST
- In force
- 62 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Frio 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, 3.5 hours before the alert went out and 177 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
- 1799 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 309 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 7.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSAT 170328
SVRSAT
TXC163-170430-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
928 PM CST MON MAR 16 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1030 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH CENTRAL TEXAS
...FRIO
AT 930 PM CST...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM BANDERA
COUNTY SOUTHWARD TO EASTERN FRIO COUNTY MOVING TOWARD THE EAST AT 20
TO 30 MPH. LARGE HAIL AND DAMAGING WINDS HAVE BEEN REPORTED IN SOME
OF THESE THUNDERSTORMS DURING THE EVENING.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAyIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 6:21 PM CST | Tornado Warning | EWX | Kinney | 54 min |
| Mar 16, 6:47 PM CST | Severe Thunderstorm Warning | EWX | Val Verde | 58 min |
| Mar 16, 7:15 PM CST | Severe Thunderstorm Warning | EWX | Kinney | 60 min |
| Mar 16, 7:19 PM CST | Severe Thunderstorm Warning | EWX | Edwards | 56 min |
| Mar 16, 7:35 PM CST | Severe Thunderstorm Warning | EWX | Real, Uvalde | 55 min |
| Mar 16, 8:01 PM CST | Severe Thunderstorm Warning | EWX | Maverick | 44 min |
| Mar 16, 8:32 PM CST | Tornado Warning | EWX | Uvalde | 58 min |
| Mar 16, 8:46 PM CST | Severe Thunderstorm Warning | EWX | Zavala | 44 min |
| Mar 16, 8:57 PM CST | Severe Thunderstorm Warning | EWX | Bandera, Medina | 63 min |
| Mar 16, 9:58 PM CST | Severe Thunderstorm Warning | EWX | Medina | 62 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.