A weak frontal boundary moved into South Central Texas and generated thunderstorms. Some of these storms produced damaging wind gusts.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EWX wrote it up.
A weak frontal boundary moved into South Central Texas and generated thunderstorms. Some of these storms produced damaging wind gusts.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Jul 30, 3:46 PM CST, 8 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 446 PM CDT Sun Jul 30 2017 .UPDATE... Have issued a Heat Advisory for areas along and east of I-35 as temperatures are in the 103 to 108 range along with heat index values in the 108 to 112 range. It will run through 8 PM. Have also expanded POPs a little to the southwest for this afternoon into evening based on radar trends. Only other changes were to re-establish temperature, dewpoint, and wind trends through this evening. && .PREV DISCUSSION... /ISSUED 249 PM CDT Sun Jul 30 2017/ SHORT TERM (Tonight through Monday Night)... A weak "cold" front moved earlier across the northern portion of the Hill Country and since then, it was made little further progression. In the mean time, temperatures will continue to rise into the upper 90s and up to 108 degrees across the southwest part of Rio Grande this afternoon. Heat index values to top at 103 to 106 degrees with isolated places reaching the 108-109 degree mark for an hour or two. By the middle of this afternoon and early evening hours, enough instability should be in place for isolated showers and thunderstorms to develop along and ahead of the frontal boundary as the cap erodes. If the storms manage to develop, some of them could be strong with thunderstorm wind gusts of 40 to 50 mph. Also, precipitable water values are around 2 inches which could result in heavy downpours. Rain chances continue overnight mainly across the Edwards Plateau and Rio Grande Plains over the warmer/moist sector of the "cold" front. Lingering isolated showers and thunderstorms are expected mainly across the southwest/Rio Grande Plains area Monday morning. A drier airmass is expected to push from east Texas into our area Monday to limit any convection to the coastal plains. Surface northeasterly winds in the wake of the dissipate "cold" front and less moisture will result in lower temperatures than previous days with highs in the mid to upper 90s. LONG TERM (Tuesday through Sunday)... The upper level pattern is forecast to change and brings chances for rain, especially from Wednesday into next weekend. Several upper level short-waves are forecast to push down from the Central Plains into our region and produce several rounds of scattered to numerous showers and thunderstorms. The GFS and Canadian models suggest the wetter period to be on Thursday while the EURO solution brings it on Friday. However, overall, all medium range models are in good agreement on increased chances for rain for the latter part of the work week. There may be some lingering showers and thunderstorms for the upcoming week mainly for areas east and south of Interstate 35 and coastal plains. Due to clouds and wet grounds, daily temperatures should stay in the low to mid 90s from Wednesday through the upcoming weekend. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 76 98 76 98 76 / 10 - 0 10 10 Austin Bergstrom Intl Airport 74 97 73 97 74 / 10 - 0 10 10 New Braunfels Muni Airport 75 98 73 98 74 / 10 10 0 - 10 Burnet Muni Airport 73 94 72 93 72 / 10 - 0 10 20 Del Rio Intl Airport 79 101 78 99 77 / 10 20 - 10 10 Georgetown Muni Airport 73 96 73 96 74 / 10 0 0 10 10 Hondo Muni Airport 76 100 72 100 74 / 20 20 0 - - San Marcos Muni Airport 75 97 72 97 73 / 10 - 0 - 10 La Grange - Fayette Regional 74 97 73 97 75 / 10 0 0 10 10 San Antonio Intl Airport 77 98 75 98 76 / 20 10 0 - 10 Stinson Muni Airport 77 97 75 97 76 / 20 10 0 - 10 && .EWX WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for the following counties: Atascosa...Bastrop...Bexar...Caldwell...Comal...De Witt... Fayette...Frio...Gonzales...Guadalupe...Hays...Karnes...Lavaca... Lee...Medina...Travis...Williamson...Wilson. && Mesoscale/Aviation...Oaks Synoptic/Grids...04 Public Service/Data Collection...33
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 415 AM CDT Sun Jul 30 2017 TXZ171>173-183>194-202>209-217>225-228-310915- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 415 AM CDT Sun Jul 30 2017 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Today And Tonight. Heat indices will range from 103 to 109 across much of South Central Texas today. Please continue to take extra precautions if you work or spend time outside in the afternoon. Stay hydrated and take breaks in the shade or an air conditioned building. Limit strenuous outdoor activities and check up on the elderly, sick and those without air conditioning. Never leave children or pets unattended in a vehicle...look before you lock! Elevated fire weather conditions are possible this afternoon due to low humidities in the 20s and above normal temperatures. Additionally, dry grasses and soils could allow for the rapid spread of wildfires, should any develop. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Triple digit heat index values and elevated fire weather conditions are expected for much of South Central Texas through at least Tuesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. TB3
The Austin/San Antonio radar (KEWX), 27 km away, was scanning. The volume nearest the first event began at 21:54 UTC.
3 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced wind gusts estimated at 65 mph that broke tree limbs and damaged the roof of a hardware store in Startzville.
A thunderstorm produced wind gusts estimated at 65 mph that blew down numerous large trees over a quarter mile area between Startz Rd. and FM 3159 near Startzville.
A thunderstorm produced wind gusts estimated at 65 mph that blew a large tree down onto a house in Converse.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2017Every state in 2017This day in weather historyWarnings in Texas, July 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 713572, 713573, 713574.