A mid to upper level low moved over a warm, moist airmass in South Central Texas and generated slow moving thunderstorms. Some of these storms produced heavy rain that led to flash flooding.
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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 mid to upper level low moved over a warm, moist airmass in South Central Texas and generated slow moving thunderstorms. Some of these storms produced heavy rain that led to flash flooding.
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 30, 1:41 AM CST, 3 hours 45 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 241 AM CDT Tue Aug 30 2022 ...New SHORT TERM, LONG TERM... .SHORT TERM... (Today through Wednesday) Issued at 156 AM CDT Tue Aug 30 2022 The highlight of the short term period will be the potential for locally heavy rainfall as scattered to numerous showers and thunderstorms develop across the region. Current WV and upper level analysis depicts an area of low pressure associated with the ongoing showers and storms across a good portion of central into west TX. This system will continue to move southeast through this morning and will be one source for precipitation throughout the day. The other source, in combination with PWATs from 1.8 to 2.2 inches already in place across the region, will be an upper level inverted trough currently situated over Louisiana and the Upper Texas Coast. The forcing from these two upper level features in addition to diurnal heating should result in the development of scattered to numerous thunderstorms throughout the day. WPC has upgraded to a slight risk for excessive rainfall in their Day 1 outlook across the western portion of the CWA due to the potential for multiple rounds of heavy rainfall today in combination with recent rainfall from the past couple of weeks. The remainder of the CWA is under a marginal risk due to the potential for minor flooding with slow moving and/or training storms. Shower and thunderstorm coverage is expected to diminish significantly around 00Z this evening, though activity may continue into Wednesday across the Rio Grande Plains as the upper level low lingers across northern Mexico. Additional development is expected to blossom through the day Wednesday across the CWA, though slightly greater coverage of showers and storms is expected across central and western portions of the CWA as the upper level slow begins to slowly pull west. This is reflected in the Day 2 ERO as much of the CWA with the exception of the Coastal Plains is under a marginal risk for excessive rainfall. As far as QPF goes, the HREF 48-hour probability-matched mean ending 00Z Wednesday evening depicts the potential for widespread totals in the 1-2 inch range with higher totals in the 3-5 inch range possible across the Rio Grande Plains. Expect high temperatures on average to be a few degrees below normal due to the increased moisture and cloud cover. && .LONG TERM... (Wednesday night through Monday) Issued at 156 AM CDT Tue Aug 30 2022 The upper level low over West Texas today retrogrades west into northwest Mexico Wednesday with ridging expanding east through the Texas Panhandle and Oklahoma. This is temporary, as models are in good agreement with left over vorticity across West Central Texas combining into a short-wave trough eroding the ridge across North Texas and Oklahoma on Thursday, then expanding the new trough axis southwest into South Central Texas Friday. Elevated moisture content will remain pooled over much of the region through much of the extended forecast, with precipitable water values forecast to be in the 1.8-2.3 range, above the CFSR 90th percentile. Earlier runs of the ECMWF and Canadian had indicated the possibility of much lower moisture water content moving into the region Friday and Saturday, but recent runs have backed off this. It appears chances will remain good for daily scattered showers and thunderstorms Thursday through Saturday given the elevated moisture pool and weakness aloft. Mesoscale influences, and a diffuse cold front Friday, could come into play as well. There is the potential for some pockets of locally heavy rainfall, with models keying on Friday. Better confidence exists this morning with respect to the tropical wave in the western Caribbean Sea. As thought yesterday, the GFS was too aggressive with a vorticity maximum spinning off the Central American Gyre and development of a tropical cyclone. Recent runs of the GFS and it's ensemble members have backed way off this and are now in agreement with the ECMWF and Canadian ensembles that the tropical wave combines with a broad trough over the northeast Gulf and advances west as a weak inverted trough into the Mexico and Texas coasts over the weekend. This, in combination with the mid and upper level weakness, should continue rain chances Sunday and Monday across South Central Texas. The National Hurricane Center has ended the outlooked area in the northwest Caribbean Sea. && .AVIATION... (06Z TAFS) Issued at 1232 AM CDT Tue Aug 30 2022 MVFR cigs will prevail at the I-35 terminals for much of the first half of the period. MVFR conditions will be possible later this morning at KDRT as a line of thunderstorms looks to move in from the northwest. Otherwise, shower coverage will begin to increase after sunrise across the remainder of south-central Texas with thunderstorms becoming possible during the afternoon. Exact timing of showers and storms at terminals will be difficult to pin down for the most part due to their forecasted scattered nature, so for now we will continue with VCSH/VCTS mention in the TAFs. Winds will mostly be light with the possibility for strong and erratic gusts in and around storms. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 90 74 93 75 / 70 40 60 40 Austin Bergstrom Intl Airport 89 74 92 75 / 70 30 60 40 New Braunfels Muni Airport 90 74 93 74 / 70 40 60 30 Burnet Muni Airport 88 72 90 73 / 70 40 70 40 Del Rio Intl Airport 90 74 87 75 / 70 60 70 50 Georgetown Muni Airport 88 74 91 74 / 70 40 60 40 Hondo Muni Airport 92 74 90 74 / 70 50 60 30 San Marcos Muni Airport 90 74 93 74 / 70 40 60 30 La Grange - Fayette Regional 89 74 90 74 / 70 30 50 30 San Antonio Intl Airport 90 75 90 76 / 70 40 60 30 Stinson Muni Airport 91 76 92 76 / 70 40 60 30 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && Short-Term...Gale Long-Term...76 Aviation...Gale
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 310 AM CDT Tue Aug 30 2022 TXZ171>173-183>194-202>209-217>225-228-310815- 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- 310 AM CDT Tue Aug 30 2022 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Today And Tonight. Scattered to numerous showers and thunderstorms are expected across all of south central Texas today, and across the Rio Grande Plains through tonight. Quick, heavy rainfall with isolated totals over two inches could lead to minor flooding, especially across the Rio Grande Plains. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Scattered to numerous showers and thunderstorms will be possible Wednesday through Friday. A few spots could see heavy rain totals over two inches, leading to isolated flooding potential. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
The Laughlin AFB radar (KDFX), 61 km away, was scanning. The volume nearest the first event began at 11:27 UTC.
8 flash flood. Local standard time, as filed.
Thunderstorms produced heavy rain that led to flash flooding in Del Rio. A picture on social media showed the intersection of Veterans Blvd. and 10th St. flooded.
Thunderstorms produced heavy rain that led to flash flooding in rural Bandera County between Tarpley and Utopia. The Bandera County Sheriff's Office reported Seco Creek had left its banks and flooded FM 470.
Thunderstorms produced heavy rain that led to flash flooding in Del Rio. The Del Rio Police Department reported several roads flooded around the city.
Thunderstorms produced heavy rain that led to flash flooding in Real County. TxDOT closed Hwy 55 south of Camp Wood due to flooding.
Thunderstorms produced heavy rain that led to flash flooding in Edwards County. The Edwards County Sheriff's Office reported several low water crossings on Hwy 55 near Barksdale were flooded and impassable.
Thunderstorms produced heavy rain that led to flash flooding in Edwards County along the Nueces River. A video on social media showed swiftly flowing water through a low water crossing on Dry Creek Rd. near Barksdale.
Thunderstorms produced heavy rain that led to flash flooding in rural Kinney County. A trained storm spotter reported 2 to 2.5 feet of fast-moving water through a low water crossing on FM 334 at Live Oak Creek.
Thunderstorms produced heavy rain that led to flash flooding in Eagle Pass. TxDOT reported flooding on El Indio Hwy just northwest of Memo Robinson Dr.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2022Every state in 2022This day in weather historyWarnings in Texas, August 2022
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: 1051449, 1051450, 1051451, 1051452, 1051453, 1051454, 1051455, 1051456.