Alert archive / Texas / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 31, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 19, 1986, 4:35 PM CST for Gillespie County, Texas. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Apr 19, 1986, 4:35 PM CST (22:35 UTC)
- Expired
- Apr 19, 1986, 5:30 PM CST
- In force
- 55 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Gillespie 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, 10.6 hours before the alert went out and 211 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
- 2658 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 585 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 192235 SVRAUS TXC031-053-171-192330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN TX 435 PM CST SAT APR 19 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF TEXAS...NORTHERN BLANCO...BURNET AND GILLESPIE AT 430 PM CST SEVERE THUNDERSTORMS WERE LOCATED OVER LLANO AND EXTREME NORTHERN GILLISPIE COUNTIES..OR SOME 50 TO 60 MILES NORTHWEST OF AUSTIN. THEY WERE MOVING TOWARDS THE EAST AT NEAR 40 MPH. LARGE HAIL AND DAMAGING THUNDERSTORM WINDS WILL LIKELY ENTER BURNET..GILLESPIE AND NORTHERN BLANCO COUNTIES WITHIN THE NEXT HOUR. NEAR ONE INCH HAIL WAS REPORTED 10 MILES WEST OF LLANO BETWEEN 355 AND 4 PM. FREQUENT LIGHTNING..STRONG DAMAGING WIND AND POSSIBLE HAIL MAY ACCOMPANY THIS STORM. REMEMBER..A TORNADO WATCH CONTINUES IN EFFECT UNTIL 9 PM FOR MANY COUNTIES IN CENTRAL AND SOUTH CENTRAL TEXAS. CONTINUE TO MONITOR THIS STATION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY AND YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOSUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
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, Apr 19, 1:45 PM CST, 2 hours 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 145 PM CST SAT APR 19 1986 ...SPRING STORM REMAINS A THREAT TO PORTIONS OF SOUTH TEXAS... A MAJOR UPPER-LEVEL DISTURBANCE AND ASSOCIATED SURFACE COLD FRONT OVER WEST TEXAS CONTINUE TO MOVE SLOWLY EAST THIS AFTERNOON..THUS MAINTAINING THE THREAT OF SEVERE WEATHER DEVELOPMENT OVER CENTRAL AND NORTHERN SECTIONS OF SOUTH TEXAS LATE THIS AFTERNOON AND TONIGHT. SEVERAL FAVORABLE INGREDIENTS ARE INTERACTING TO PRODUCE THIS SIGNIFICANT THREAT TO THE AREA. STRONG LOW-LEVEL WIND CONTINUES TO SPREAD ABUNDANT MOISTURE NORTHWARD ACROSS THE STATE AHEAD OF THE COLD FRONT. IN ADDITION..THE AIR MASS REMAINS VERY UNSTABLE WITH ADDITIONAL DESTABILIZATION LIKELY INTO TONIGHT AS THE UPPER SYSTEM APPROACHES. A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PORTION OF NORTHCENTRAL TEXAS UNTIL 400 PM THIS AFTERNOON. THUNDERSTORMS TRIGGERED BY THIS STORM SYSTEM HAVE ALREADY PRODUCED AT LEAST ONE TORNADO WITHIN THE WATCH AREA WHICH HAS RESULTED IN ONE FATALITY AND SEVERAL INJURIES IN THE TOWN OF SWEETWATER NEAR ABILENE. SEVERAL REPORTS OF LARGE HAIL HAVE ALSO BEEN RECEIVED. WHILE THE MOST SIGNIFICANT THREAT OF SEVERE WEATHER IS EXPECTED TO CONTINUE OVER NORTH AND CENTRAL TEXAS..RESIDENTS ACROSS OUR AREA.. ESPECIALLY OVER THE HILL COUNTRY..ADJACENT SOUTHCENTRAL AND SOUTHEAST TEXAS SHOULD MAINTAIN A CONSTANT VIGIL ON THE WEATHER THIS AFTERNOON AND TONIGHT. REMEMBER..SEVERE THUNDERSTORMS CAN BE EXPECTED TO PRODUCE HAIL THREE-QUARTERS OF AN INCH IN DIAMETER OR LARGER..SURFACE WIND GUSTS ABOVE 58 MILES AN HOUR..FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. STAY TUNED TO LOCAL RADIO..TELEVISION OR NOAA WEATHER RADIO FOR ADDITIONAL WEATHER STATEMENTS AND/OR WARNINGS THROUGHOUT THIS AFTERNOON AND TONIGHT.
Special weather statement, Apr 19, 2:57 PM CST, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 300 PM CST SAT APR 19 1986 ...SEVERE THUNDERSTORMS CONTINUE TO FORM TO THE DISTANT NORTHWEST... AT 3 PM..RADAR SHOWED NEWLY DEVELOPING THUNDERSTORMS ABOUT 100 MILES WEST AND NORTHWEST OF AUSTIN. ONE WAS CENTERED OVER KIMBLE COUNTY.. JUST NORTH OF JUNCTION AND ANOTHER WAS OVER MCCULLOCH COUNTY..NEAR BRADY. THEY WERE MOVING TOWARDS THE NORTHEAST AT 25 MPH. THE POTENTIAL FOR SEVERE THUNDERSTORMS AND POSSIBLY TORNADOES APPEARS TO BE RELATIVELY HIGH FOR THE REMAINDER OF THIS AFTERNOON AND INTO THE EVENING. MANY COUNTIES OF CENTRAL AND NORTH TEXAS REMAIN UNDER A TORNADO WATCH UNTIL 9PM. TRAVIS AND ALL SURROUNDING COUNTIES ARE INFCLUDED IN THIS WATCH. BEGIN NOW TO MAKE PREPARATIONS FOR SEVERE WEATHER CONDITIONS LATER TODAY AND INTO THE NIGHT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 3:13 PM CST | Severe Thunderstorm Warning | EWX | Lampasas, Mills | 62 min |
| Apr 19, 3:52 PM CST | Severe Thunderstorm Warning | EWX | Llano | 98 min |
| Apr 19, 4:35 PM CST | Severe Thunderstorm Warning | EWX | Blanco, Burnet | 55 min |
| Apr 19, 5:07 PM CST | Severe Thunderstorm Warning | EWX | Williamson | 68 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm warning in 1986
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.