An upper level trough and dissipating frontal boundary combined to generate isolated showers and thunderstorms over South Central Texas. Some of these storms produced damaging wind gusts.
Every event with a place to put it. Tap one for its entry below.
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.
An upper level trough and dissipating frontal boundary combined to generate isolated showers and thunderstorms over South Central Texas. 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 Aug 2, 11:32 AM CST, 1 hour 31 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 1232 PM CDT Sun Aug 2 2020 .AVIATION... Thunderstorms forming to the northwest of the AUS terminal with SE movement. Included temporary conditions for TS that may reach the terminal over the next couple of hours. Less activity further south along the corridor, and San Antonio sites may get some vicinity showers. Otherwise, light winds and no significant ceilings overnight. && PREV DISCUSSION... /ISSUED 300 AM CDT Sun Aug 2 2020/ SHORT TERM (Today through Monday)... Early this morning, the satellite Layer Pwat product shows the mid- level moisture layer pulling south toward the Coastal Bend with drier air moving into South Central TX. So while the NW flow pattern aloft over South Central TX looks plenty unstable for the afternoon, the convection generated by global and mesoscale models have continued to trend toward less coverage and intensity. And while the NAM and Texas Tech WRF depicts QPF/Sim Ref indicative of 5-10 percent coverage of convection over the Hill Country for Monday afternoon into evening, the downward trends in the blends and lack of a significant vorticity feature upstream in the GFS/ECM has us leaning towards PoPs too low to mention. On temps, parts of the Hill Country might have received enough rainfall to modify Max T potential as the upper ridge tries to build back over TX. Looking at the QPF, it looks as if the greater majority of the area received well below 1/2 inch of rain and that's probably not enough to modify soil and vegetation for a meaningful adjustment to daytime heating. Thus a slight warming trend overall is expected for today and a bigger jump in Max Temps is expected for Monday. Surface winds in the day should have a minimal influence from onshore Gulf flow, so at least that should contribute to lower relative heat index values in the short range as compared to what will develop in the medium range. LONG TERM (Monday Night through Saturday)... The Subtropical Ridge over the southwestern United States and northwestern Mexico mid week shifts to over Texas late week into next weekend. Subsidence under the Ridge and drier air aloft will keep rain out of the forecast for most areas. Somewhat deeper lower level moisture drifts back into parts of our area next weekend. This may allow the seabreeze to generate isolated showers and thunderstorms over our areas near the Coastal Plains. High temperatures remain a few degrees above normal with the typical early August only mildly elevated afternoon heat index values. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 75 100 76 100 76 / - 10 10 - 0 Austin Bergstrom Intl Airport 72 99 75 100 76 / - 10 10 0 - New Braunfels Muni Airport 72 99 75 100 74 / - 10 10 0 0 Burnet Muni Airport 73 97 73 100 75 / 0 10 10 - - Del Rio Intl Airport 75 101 78 106 78 / 0 - 10 0 0 Georgetown Muni Airport 72 99 75 101 76 / - 10 10 - - Hondo Muni Airport 72 99 75 103 74 / - 10 10 0 0 San Marcos Muni Airport 72 99 75 100 74 / - 10 10 0 0 La Grange - Fayette Regional 74 99 76 100 76 / - 10 10 - 0 San Antonio Intl Airport 76 100 77 102 76 / - 10 10 0 0 Stinson Muni Airport 74 100 76 101 76 / - 10 10 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && Short-Term/Aviation...YBVP Long-Term...KCW
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 348 AM CDT Sun Aug 2 2020 TXZ171>173-183>194-202>209-217>225-228-030900- 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- 348 AM CDT Sun Aug 2 2020 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Today And Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
Special Weather Statement National Weather Service Austin/San Antonio TX 1232 PM CDT Sun Aug 2 2020 TXZ173-192-021815- Williamson TX-Travis TX- 1232 PM CDT Sun Aug 2 2020 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WILLIAMSON AND CENTRAL TRAVIS COUNTIES UNTIL 115 PM CDT... At 1232 PM CDT, Doppler radar was tracking a strong thunderstorm over Anderson Mill, moving southeast at 15 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Austin, Round Rock, Cedar Park, Pflugerville, Anderson Mill, Windemere, Austin Bergstrom Int Airport, Leander, Manor, Lago Vista, West Lake Hills, Hudson Bend, Rollingwood, Mansfield Dam, Jonestown, Volente, Brushy Creek, Wells Branch, Jollyville and Camp Mabry. LAT...LON 3041 9799 3060 9777 3039 9745 3020 9768 TIME...MOT...LOC 1732Z 313DEG 14KT 3049 9778 KCW
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1239 PM CDT SUN AUG 2 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1239 PM HAIL 1 SW BRUSHY CREEK 30.50N 97.76W
08/02/2020 E0.70 INCH WILLIAMSON TX PUBLIC
SOCIAL MEDIA REPORT OF DIME SIZE HAIL.
&&
YBVPSpecial Weather Statement
National Weather Service Austin/San Antonio TX
1247 PM CDT Sun Aug 2 2020
TXZ192-021830-
Travis TX-
1247 PM CDT Sun Aug 2 2020
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL TRAVIS COUNTY UNTIL
130 PM CDT...
At 1247 PM CDT, Doppler radar was tracking a strong thunderstorm over
Mansfield Dam, or 10 miles southwest of Anderson Mill, moving south
at 10 mph.
Nickel size hail will be possible with this storm.
Locations impacted include...
Austin, Lakeway, Lago Vista, Bee Cave, West Lake Hills, Hudson Bend,
The Hills, Rollingwood, Bear Creek, Barton Creek, Mansfield Dam,
Shady Hollow, Point Venture, Sunset Valley and Lost Creek.
LAT...LON 3043 9786 3019 9776 3017 9791 3021 9797
3023 9799 3041 9800
TIME...MOT...LOC 1747Z 348DEG 10KT 3036 9793
KCWSpecial Weather Statement
National Weather Service Austin/San Antonio TX
116 PM CDT Sun Aug 2 2020
TXZ192-193-208-021900-
Caldwell TX-Bastrop TX-Travis TX-
116 PM CDT Sun Aug 2 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CALDWELL...SOUTH
CENTRAL TRAVIS AND WEST CENTRAL BASTROP COUNTIES UNTIL 200 PM CDT...
At 116 PM CDT, Doppler radar was tracking a strong thunderstorm over
Austin Bergstrom Int Airport, moving southeast at 20 mph.
Half inch hail will be possible with this storm.
Locations impacted include...
Austin, Austin Bergstrom Int Airport, Mustang Ridge, Niederwald,
Onion Creek, Creedmoor, McKinney Falls State Park, Maha, Del Valle,
Mendoza, Pilot Knob and Garfield.
LAT...LON 3000 9746 2996 9773 3000 9775 3003 9771
3007 9778 3019 9783 3029 9766
TIME...MOT...LOC 1816Z 329DEG 18KT 3018 9771
KCWSpecial Weather Statement
National Weather Service Austin/San Antonio TX
129 PM CDT Sun Aug 2 2020
TXZ191-206-207-021915-
Guadalupe TX-Comal TX-Hays TX-
129 PM CDT Sun Aug 2 2020
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL HAYS...NORTHERN
GUADALUPE AND EAST CENTRAL COMAL COUNTIES UNTIL 215 PM CDT...
At 129 PM CDT, Doppler radar was tracking a strong thunderstorm near
Woodcreek, or near Wimberley, moving south at 20 mph.
Half inch hail will be possible with this storm.
Locations impacted include...
San Marcos, Kyle, Wimberley, Woodcreek, Staples, Hunter, Hays City,
Redwood and San Marcos Regional Airport.
LAT...LON 2990 9786 2988 9789 2986 9790 2986 9788
2984 9785 2983 9784 2980 9784 2979 9783
2978 9783 2979 9782 2977 9781 2976 9810
3009 9815 3013 9795
TIME...MOT...LOC 1829Z 347DEG 19KT 3004 9804
KCWSpecial Weather Statement
National Weather Service Austin/San Antonio TX
147 PM CDT Sun Aug 2 2020
TXZ191-192-208-021930-
Caldwell TX-Hays TX-Travis TX-
147 PM CDT Sun Aug 2 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CALDWELL...
SOUTHEASTERN HAYS AND SOUTH CENTRAL TRAVIS COUNTIES UNTIL 230 PM
CDT...
At 147 PM CDT, Doppler radar was tracking a strong thunderstorm over
Buda, moving south at 15 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Austin, San Marcos, Kyle, Buda, Lockhart, Martindale, Uhland, Mustang
Ridge, Niederwald, Onion Creek, Manchaca, Mountain City, San Leanna,
Hays, Creedmoor, San Marcos Regional Airport, Maxwell, Reehdville
and Redwood.
LAT...LON 2986 9762 2980 9784 2981 9785 2983 9784
2985 9786 2985 9789 2982 9792 2983 9792
3011 9797 3017 9777
TIME...MOT...LOC 1847Z 343DEG 14KT 3008 9786
KCWThe Austin/San Antonio radar (KEWX), 31 km away, was scanning. The volume nearest the first event began at 19:06 UTC.
2 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced wind gusts estimated at 60 mph by an NWS employee.
A thunderstorm produced wind gusts estimated at 60 mph that knocked down a large tree limb at a house.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2020Every state in 2020This day in weather historyWarnings in Texas, August 2020
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: 913833, 913831.