Alert archive / Texas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 23, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 21, 1987, 6:37 PM CST for Mills County, San Saba County, Texas. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Mar 21, 1987, 6:37 PM CST (00:37 UTC)
- Expired
- Mar 21, 1987, 7:45 PM CST
- In force
- 68 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Mills County, TX, San Saba 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
Stephenville/Cla, TX (KSEP), launched 00:00Z, 0.6 hours before the alert went out and 115 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
- 1107 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1395 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 212 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 220037 SVRAUS TXC333-441-220145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN TX 637 PM CST SAT MAR 21 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF TEXAS...MILLS AND NORTHERN SAN SABA AT 636 PM CST A SEVERE THUNDERSTORM WAS LOCATED OVER THE NORTHWEST CORNER OF SAN SABA COUNTY MOVING EAST AND NORTHEAST. 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 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, Mar 21, 6:16 PM CST, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 610 PM CST SAT MAR 21 1987 AUSTIN RADAR INDICATES STRONG THUNDERSTORMS WITH VERY HEAVY RAINS AND SMALL HAIL WEST OF MILLS AND SAB SABA COUNTIES OR ABOUT 110 MILES NORTHWEST OF AUSTIN. MOVEMENT IS TOWARDS THE EAST AND NORTHEAST. PERSONS IN NORTHERN SAN SABA COUNTY AND MILLS COUNTY SHOULD STAY ALERT TO THE MOVEMENT OF THESE STORMS FOR THE NEXT FEW HOURS AS THEY COULD BECOME SEVERE.
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.