Alert archive / Texas / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 38, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 30, 1986, 8:54 PM CDT for Atascosa County, Bexar County, Texas. It was in force for 66 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 30, 1986, 8:54 PM CDT (01:54 UTC)
- Expired
- Apr 30, 1986, 10:00 PM CDT
- In force
- 66 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Atascosa County, TX, Bexar County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 30, 9:00 PM CDT | Hail 1.75 | Bexar, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Victoria Regiona, TX (KVCT), launched 00:00Z, 1.9 hours before the alert went out and 162 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
- 2215 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 010154 SVRSAT TXC013-029-010300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 854 PM CDT WED APR 30 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL TEXAS...ATASCOSA AND SOUTHERN BEXAR AT 857 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS LOCATED FROM WEST ATASCOSA COUNTY NORTH IN TO SOUTH BEXAR COUNTY. ONE INCH DIAMETER HAIL WAS REPORTED NEAR POTEET IN ATASCOSA COUNTY BY THE ATASCOSA COUNTY SHERIFF. 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. 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, Apr 30, 4:49 PM CDT, 4 hours 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 450 PM CDT WED APR 30 1986 AT 445 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS EXTENDING FROM JUST SOUTH OF BROWNWOOD TO NEAR JUNCTION. HEAVIEST THUNDERSTORMS WERE JUST WEST OF LLANO COUNTY AND ARE MOVING TOWARD THE NORTHEAST 25 MPH. OTHER HEAVY THUNDERSTORMS.. WITH HAIL INDICATED.. ARE LOCATED NORTH EAST OF AUSTIN AND A LITTLE SOUTH OF CAMERON. THE THUNDERSTORMS TO THE NORTHWEST HAVE THE POTENTIAL TO BECOME SEVERE AND WE WILL BE WATCHING THESE STORMS CLOSELY FOR THE NEXT FEW HOURS.
Special weather statement, Apr 30, 5:51 PM CDT, 3 hours 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 550 PM CDT WED APR 30 1986 AT 545 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS WELL NORTHWEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND FROM GOLDTHWAITE TO NORTHWEST OF LLANO TO ABOUT HALF WAY BETWEEN JUNCTION AND FREDERICKSBURG. THESE THUNDERSTORMS ARE LIKELY PRODUCING BRIEF HEAVY RAIN.. SMALL HAIL AND STRONG GUSTY WINDS. MOVEMENT OF THE LINE IS TOWARD THE EAST AND SOUTHEAST AT 15 MPH. OTHER HEAVY THUNDERSTORMS ARE LOCATED NORTHEAST OF AUSTIN AND EXTEND FROM ROCKDALE AND LEXINGTON NORTHEAST TOWARD PALESTINE.
Special weather statement, Apr 30, 7:00 PM CDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 700 PM CDT WED APR 30 1986 AT 655 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS NORTHWEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND FROM LAMPASAS TO MARBLE FALLS TO FREDERICKSBURG. HEAVIEST THUNDERSTORMS WERE BETWEEN KINGSLAND AND MARBLE FALLS. LCRA AT BUCHANAN DAM REPORTED STRONG GUSTY WIND VERY HEAVY RAIN FOR 15 MINUTES AND LOTS OF PEA TO MARBLE SIZE HAIL WHICH LASTED FO2R 10 MINUTES AND NEARLY COVERED THE GROUND. THIS LINE OF THUNDERSTORMS WAS MOVING TOWARD THE SOUTHEAST AT 20 MPH. OTHER HEAVY THUNDERSTORMS ARE LOCATED NORTH AND EAST OF AUSTIN AND MOVING AWAY.
Special weather statement, Apr 30, 7:55 PM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN TX 755 PM CDT WED APR 30 1986 AT 755 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS NORTH THROUGH WEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND FROM SOUTH OF WACO TO GEORGETOWN TO NEAR KERVILLE. HEAVIEST THUNDERSTORMS WERE NORTH OF GEORGETOWN AND NORTH OF JOHNSON CITY. RADIO STATION KHLB REPORTED ALOT OF PEA AND MARBLE SIZE HAIL AND VERY HEAVY RAIN IN MARBLE FALLS. HAIL WAS ALuSO REPORTED BETWEEN LAKE BUCHANAN AND BURNET. THIS LINE OF THUNDERSTORMS WAS MOVING TOWARD THE SOUTHEAST AT 20 TO 25 MILES AN HOUR.
Special weather statement, Apr 30, 8:32 PM CDT, 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 835 PM CST WED APR 29 1986 ...THUNDERSTORMS DEVELOPING IN SOUTH BEXAR COUNTY... AT 830 PM RADAR INDICATED A LINE OF SCATTERED THUNDERSTORMS FROM NORTH ATASCOSA COUNTY ACROSS SOUTHEAST BEXAR INTO GUADALUPE COUNTY. THESE THUNDERSTORMS WILL LIKELY DEVELOP NORTH AND EASTWARD AND INTENSIFY DURING THE NEXT HOUR. ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 8:59 PM CDT | Severe Thunderstorm Warning | EWX | Real | 61 min |
| Apr 30, 10:15 PM CDT | Severe Thunderstorm Warning | EWX | La Salle, McMullen | 60 min |
| May 1, 3:35 PM CDT | Severe Thunderstorm Warning | EWX | Maverick | 55 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.