A cold front moved into a warm, moist airmass and generated thunderstorms. Some of these storms produced heavy rain that led to flash flooding.
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.
A cold front moved into a warm, moist airmass and generated 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 22, 1:07 PM CST, 2 hours 11 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 207 PM CDT Mon Aug 22 2022 ...New SHORT TERM, LONG TERM... .SHORT TERM... (Tonight through Tuesday night) Issued at 203 PM CDT Mon Aug 22 2022 Key Messages: 1) High rainfall chances with pockets of locally heavy rain expected this afternoon through Wednesday across the region, especially for the Hill Country, southern Edwards Plateau and along portions of the I-35 corridor. 2) Despite ongoing long-term drought conditions, some rounds of storms this afternoon/evening and again on Tuesday could train and produce very efficient high rainfall rates across some locations in the region listed above. This could lead to some spots of quick flooding, especially low water crossings and urban areas. Latest GOES 16 Day Cloud Phase imagery depicts thunderstorms rapidly growing upscale over the Texas Hill Country along a southeastward advancing cold front early this afternoon. Based off of morning sounding at DRT with PWATs of 2.2" and continued deep moisture return from the Gulf of Mexico ahead of this front, think that heavy rain and flooding will materialize rather quickly through the afternoon and evening hours. Rainfall rates of 2-3" per hour are not out of the question given very slow storm motions and parallel wind flow at 850 mb to the frontal boundary. Morning clearing over the Hill Country has also helped to rapidly destabilize the region out ahead of the front, with upwards of 2000-2500 J/kg of long skinny cape sounding profiles noted. Hi-Res guidance continues to indicate rapid growth of storms along this front through the late afternoon and evening, then pushing southeast through the Southern Edwards Plateau/Hill Country and eventually through the I-35 corridor. One thing to note, based on Crest soil moisture, very little in the way of concerns due to the ongoing drought. However, with high rainfall rates expected and hard ground and parched soils, wouldn't be surprised to see more runoff than normal from an event like this. That being said, our current Flood Watch will be extended both spatially and temporally as the threat for flooding is increasing further south into the San Antonio metro and even points further east later this evening. Tuesday will be a tricky forecast as it is highly dependent on what happens this evening and overnight, but widespread showers and thunderstorms appear likely again Tuesday afternoon and evening, especially over the Coastal Plains and portions of the I-35 corridor. && .LONG TERM... (Wednesday through Monday) Issued at 203 PM CDT Mon Aug 22 2022 Cool and wet weather will stick around into the long term period, with some risk for locally heavy rainfall leading to localized flooding impacts Wednesday and potentially Thursday. On Wednesday, the tail end of the pesky frontal boundary is likely to still be draped across south-central Texas, and negative height anomalies overhead will continue to promote areas of showers and thunderstorms. The last few hours of available CAMs indicate a potential that some locally heavy rains could be ongoing to start the period Wednesday morning. This is a reasonable possibility given PW in excess of 2" (and maybe as high as 2.4") across much of the region and a lack of strong upper level flow promoting the potential for training along the frontal boundary. In addition, freezing levels approaching 14-15 kft will allow for ample warm rain processes. The risk for any flooding may be exacerbated in areas that receive significant rainfall today through tomorrow night. For now, WPC is holding onto a Marginal Risk of excessive rain across the region Wednesday through Wednesday night, but there is a chance this could change over the next 12-36 hours. For now, we've extended the Flood Watch through 18Z Wednesday and expanded it south a tier of counties to include the San Antonio Metro area. We do expect most shower and storm activity will diminish by Wednesday evening, however model guidance suggests a surface low will begin to develop in the vicinity of the Rio Grande between Laredo and Eagle Pass, leading to additional shower/storm development later in the evening that may spread northeastward across the rest of our region overnight and into Thursday. Chances for locally heavy rains cannot be ruled out through the day. There's potentially some relief coming around this time in the form of dry mid-upper level air filtering in on strengthening NW/NNW flow, but the NAM is much more confident in this solution than the GFS/EC at the moment, but at least for the Hill Country this could help alleviate some of the concerns for excessive rainfall by Thursday night. We do believe rain chances will slacken some on Friday through the weekend, however with the lowering PW, the lack of a surface boundary, and overall lesser agreement in the models/ensembles, we'll cap POPs Friday through Sunday at 30-40% and re-evaluate over the coming days. The good news is, many areas will see continued improvements to the ongoing drought, but it may come with some flood risk unfortunately for a few locations Wednesday and potentially Thursday. In addition, below normal daytime temperatures will dominate the forecast, which is welcome news to this Wisconsin native that's tired of the summer heat! && .AVIATION... (18Z TAFS) Issued at 1227 PM CDT Mon Aug 22 2022 Hmmm...where to even begin. Probably the trickiest TAF forecast in recent memory, with a complicated convective scenario developing through the next 24-30 hours. Will go with a blend of guidance based on the LAMP/NBM and our PoP forecast. At this time, the going thinking is that there will be at least two separate rounds of showers and thunderstorms rolling through over the forecast period, with the first round being higher confidence, and the second round being considerably less confident. Have gone with prevailing TSRA at all sites this evening through around 10pm to midnight. Beyond that, have used TEMPO groups to highlight higher confidence time frames for thunderstorms, but this is still a forecast in flux. Ceilings will be tough along with visibilities dropping to less than 2 miles at times within the heaviest thunderstorms. Winds will also be an issue, with a weak frontal boundary sliding in this evening, expect variable and somewhat chaotic winds generally less than 10 kts through the period. Any thunderstorms could produce gusty winds up to 25+ kts at times through Tuesday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 75 87 75 89 / 70 70 40 50 Austin Bergstrom Intl Airport 75 88 75 88 / 80 70 40 50 New Braunfels Muni Airport 76 90 75 91 / 70 60 50 50 Burnet Muni Airport 73 86 73 88 / 60 70 30 50 Del Rio Intl Airport 76 89 76 91 / 70 50 50 50 Georgetown Muni Airport 74 87 74 88 / 70 70 40 50 Hondo Muni Airport 75 89 75 89 / 70 50 50 50 San Marcos Muni Airport 76 89 73 89 / 70 70 50 50 La Grange - Fayette Regional 76 89 75 90 / 70 70 50 50 San Antonio Intl Airport 76 89 76 89 / 70 60 50 50 Stinson Muni Airport 77 91 76 90 / 70 50 50 50 && .EWX WATCHES/WARNINGS/ADVISORIES... Flood Watch through Wednesday afternoon for Bandera-Bastrop-Bexar- Blanco-Burnet-Caldwell-Comal-Edwards-Gillespie-Guadalupe-Hays- Kendall-Kerr-Lee-Llano-Medina-Real-Travis-Uvalde-Williamson. && Short-Term...Morris Long-Term...KCW Aviation...Morris
Hazardous Weather Outlook National Weather Service Austin/San Antonio TX 247 PM CDT Mon Aug 22 2022 TXZ171>173-183>194-202>209-217>225-228-232000- 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- 247 PM CDT Mon Aug 22 2022 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Tonight. Gusty winds and locally heavy rainfall with rates of 2-3" per hour are possible this evening and tonight as storms move through much of South-Central Texas. A Flash Flood Watch is in effect through Wednesday afternoon for the Edwards Plateau, Hill Country, I-35 corridor, and portions of the Coastal Plains. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Gusty winds and heavy rainfall are possible with showers and thunderstorms Tuesday afternoon and evening as well as Wednesday afternoon and evening. A Flash Flood Watch is in effect through Wednesday afternoon for the Edwards Plateau, Hill Country, I-35 corridor, and portions of the Coastal Plains. Gusty winds and locally heavy rainfall are possible with showers and thunderstorms Thursday through Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
The Ft Hood radar (KGRK), 65 km away, was scanning. The volume nearest the first event began at 21:16 UTC.
10 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorms produced heavy rain that led to flash flooding. ATXFloods reported the low water crossing at the Woodview Mobile Home Park on West Bouldin Creek off Oltorf St. was closed in Austin.
Thunderstorms produced heavy rain that led to flash flooding. ATXFloods reported the low water crossing at Edgegrove Dr. and Bee Caves Rd. near Eanes Creek in West Lake Hills was closed.
Thunderstorms produced heavy rain that led to flash flooding. Video on Twitter showed cars driving through approximately a foot of water on N. Lamar Blvd. at W. 24th St. in Austin.
Thunderstorms produced heavy rain that led to flash flooding in Austin. A trained spotter reported several parking lots covered with eight inches of water at the intersection of Hwy 290 and Airport Blvd.
A thunderstorm produced wind gusts measured at 52 kts by the ASOS at Del Rio International Airport.
Thunderstorms produced heavy rain that led to flash flooding in Austin. Old San Antonio Rd. was closed at Slaughter Creek just south of the Southpark Meadows Shopping Center.
Thunderstorms produced heavy rain that led to flash flooding in Austin. Waller Creek overflowed its banks and flooded W. 45th St. and Ave. F.
Thunderstorms produced heavy rain that led to flash flooding in Austin. ATXFloods reported the low water crossing on Wasson Rd. at Williamson Creek was closed.
Thunderstorms produced heavy rain that led to flash flooding in Austin. ATXFloods reported the low water crossing at W. 9th St. and Lamar Blvd. at Shoal Creek was closed.
Thunderstorms produced heavy rain that led to flash flooding in Austin. Pictures on Twitter showed water in the halls of Murchison Middle School.
Thunderstorms produced heavy rain that led to flash flooding in Del Rio. A car was stranded in flood water at Kings Way and Mary Lou 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: 1051036, 1051037, 1051040, 1051041, 1051048, 1051042, 1051043, 1051044, 1051045, 1051046, 1051047.