Alert archive / Texas / Tornado Warnings in 1986

Tornado Warning 6, NWS Austin/San Antonio, TX

May 17, 1986Lavaca County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 17, 1986, 3:34 PM CDT for Lavaca County, Texas. It was in force for 56 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, 3:34 PM CDT (20:34 UTC)
Expired: May 17, 1986, 4:30 PM CDT
In force: 56 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Lavaca 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, 3:45 PM CDT	Thunderstorm Wind 0	Lavaca, 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 12:00Z, 8.6 hours before the alert went out and 59 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1627 J/kg
Mixed-layer CIN: -289 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KVCT 172034
TORVCT
TXC285-172130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE VICTORIA TX
334 PM CDT SAT MAY 17 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

TEXAS...LAVACA

AT 322 PM CDT A TORNADO WAS REPORTED BY THE PUBLIC TO THE
POLICE DEPARTMENT IN HALLETTSVILLE 5MI NORTH OF HIGHWAY 98
MOVING TOWARDS THE SOUTHEAST AT 30 MPH.

FREQUENT LIGHTNING..STRONG DAMAGING WIND AND POSSIBLE HAIL MAY
ACCOMPANY THIS STORM.

PLEASE LISTEN TO YOUR LOCAL RADIO..TV..OR NOAA WEATHER RADIO FOR
LATER STATEMENTS REGARDING THIS SEVERE WEATHER EPISODE.

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, 9:29 AM CDT	Severe Thunderstorm Warning	EWX	Lampasas, Mills, San Saba	61 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, 3:40 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

Tornado Warnings in Texas, 1986 Every tornado warning in 1986 Tornadoes 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.