Alert archive / Texas / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 64, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 17, 1986, 9:29 AM CDT for Lampasas County, Mills County, San Saba County, Texas. It was in force for 61 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
- May 17, 1986, 9:29 AM CDT (14:29 UTC)
- Expired
- May 17, 1986, 10:30 AM CDT
- In force
- 61 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Lampasas County, TX, 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 17, 10:00 AM CDT | Hail 1 | San Saba, 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
Stephenville/Cla, TX (KSEP), launched 12:00Z, 2.5 hours before the alert went out and 113 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
- 2509 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 611 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 10.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAUS 171429 SVRAUS TXC281-333-441-171530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN TX 929 AM CDT SAT MAY 17 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF TEXAS...WESTERN LAMPASAS...MILLS AND SAN SABA AT 925 AM CDT A SEVERE THUNDERSTORM WAS LOCATED JUST WEST OF SAN SABA MOVING RAPIDLY EASTWARDT. THIS STORM HAS HAD A HISTORY OF PRODUCING LARGE HAIL AND DAMAGING WINDS. IT WAS MOVING TOWARDS THE EAST AT NEAR 30 MPH. IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY.
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, May 17, 6:08 AM CDT, 3 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 600 AM CDT SAT MAY 17 1986 ...STRONG COLD FRONT TO MOVE THROUGH TEXAS HILL COUNTRY AND ADJOING AREAS TODAY AND TONIGHT... A STRONG COLD FRONT WILL MOVE THROUGH SOUTH TEXAS TODAY AND TONIGHT CAUSING SEVERE THUNDERSTORMS AND COOLER WEATHER. THE FRONT..NOW LOCATED FROM SOUTH OF MIDLAND TO ABILENE TO NEAR DALLS IS MOVING SOUTH NEAR 20 MPH AND SHOULD ENTER THE TEXAS HILL COUNTRY THIS AFTERNOON AND MOVE TO NEAR THE COAST BY SUNDAY MORNING. THE FRONT IS EXPECTED TO MOVE THROUGH THE SAN ANTONIO AREA THIS EVENING. SCATTERED TO NUMEROUS THUNDERSTORMS ARE FORMING ALONG AND JUST SOUTH OF THE COLD FRONT AND WILL ALSO MOVE SOUTH. THE ATMOSPHERE IS VERY UNSTABLE AND SOME OF THE THUNDERSTORMS WILL LIKELY BECOME SEVERE. ANYONE PLANNING OUTDOOR ACTIVITIES TODAY OR TONIGHT SHOULD BE ALERT FOR THIS DEVELOPING WEATHER SITUATION. BOATERS SHOULD BE ALERT FOR FAST MOVING THUNDERSTORMS WHICH MIGHT CATCH THEM IN THE OPEN WATER. WINDS WITH THE THUNDERSTORMS WILL LIKELY BE QUITE STRONG AND GUSTY AND CAPABLE OF CAPSIZING SMALL BOATS. CAMPERS..PICNICKERS AND SWIMMERS SHOULD ALSO BE ALERT FOR DANGEROUS LIGHTNING WITH THE THUNDERSTORMS. WINDS BEHIND THE FRONT WILL BE FROM THE NORTH NEAR 15 MPH TONIGHT BUT INCREASE TO 15 TO 20 MPH SUNDAY. WINDS ALONG THE TEXAS COAST WILL SHIFT TO THE NORTH SUNDAY AND INCREASE TO 20 TO 30 KNOTS. THE WEATHER WILL BE NOTICEABLY COOLER BEHIND THE FRONT. TEMPERATURES AT AMARILLO THIS MORNING WERE IN THE MID 40S WITH NORTH WINDS GUSTING TO NEAR 45 MPH. LIGHT SNOW ALSO FELL OVER SOUTHEAST COLORADO DURING THE NIGHT. THE COOLER AIR WILL MOVE INTO THE HILL COUNTRY TONIGHT LOWERING TEMPERATURES INTO THE UPPER 50S. READINGS SUNDAY OVER THE TEXAS HILL COUNTRY AND ADJOINING AREAS SHOULD BE IN THE LOWER 70S WITH GUSTY NORTH WINDS. THE COOL WEATHER WILL CONTINUE INTO THE EARLY PART OF THE WEEK WITH A WARMING TREND BEGINNING BY MID WEEK.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 8:01 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 59 min |
| May 16, 8:20 PM CDT | Severe Thunderstorm Warning | EWX | La Salle | 60 min |
| May 17, 11:24 AM CDT | Tornado Warning | EWX | Burnet, Williamson | 66 min |
| May 17, 11:39 AM CDT | Severe Thunderstorm Warning | EWX | Llano | 66 min |
| May 17, 11:58 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Lampasas, San Saba | 62 min |
| May 17, 11:58 AM CDT | Severe Thunderstorm Warning | EWX | Llano | 62 min |
| May 17, 12:21 PM CDT | Tornado Warning | EWX | Blanco, Burnet, Llano | 69 min |
| May 17, 12:49 PM CDT | Severe Thunderstorm Warning | EWX | Comal | 56 min |
| May 17, 12:52 PM CDT | Tornado Warning | EWX | Travis | 68 min |
| May 17, 1:09 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 66 min |
| May 17, 1:23 PM CDT | Severe Thunderstorm Warning | EWX | Hays | 67 min |
| May 17, 1:39 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee | 66 min |
| May 17, 1:59 PM CDT | Flash Flood Warning | EWX | Blanco, Hays | 3 hr |
| May 17, 1:59 PM CDT | Flash Flood Warning | EWX | Burnet | 3 hr |
| May 17, 1:59 PM CDT | Flash Flood Warning | EWX | Bastrop, Lee, Travis, Williamson | 3 hr |
| May 17, 3:20 PM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 55 min |
| May 17, 3:31 PM CDT | Tornado Warning | EWX | Guadalupe | 59 min |
| May 17, 3:34 PM CDT | Tornado Warning | EWX | Lavaca | 56 min |
| May 17, 3:40 PM CDT | Tornado Warning | EWX | Bastrop | 65 min |
| May 17, 3:40 PM CDT | Tornado Warning | EWX | Bastrop | 32 min |
| May 17, 3:41 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt | 64 min |
| May 17, 3:48 PM CDT | Tornado Warning | EWX | Gonzales | 72 min |
| May 17, 3:53 PM CDT | Tornado Warning | EWX | Lavaca | 67 min |
| May 17, 3:59 PM CDT | Tornado Warning | EWX | DeWitt | 61 min |
| May 17, 4:07 PM CDT | Severe Thunderstorm Warning | EWX | Webb | 68 min |
| May 17, 4:35 PM CDT | Tornado Warning | EWX | Lavaca | 55 min |
| May 17, 4:40 PM CDT | Tornado Warning | EWX | Victoria | 80 min |
| May 17, 4:44 PM CDT | Severe Thunderstorm Warning | EWX | Jackson, Victoria | 61 min |
| May 17, 5:17 PM CDT | Tornado Warning | EWX | Goliad | 43 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.