A cold front moved into an unusually warm, moist airmass and generated thunderstorms. Some thunderstorms produced locally 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 an unusually warm, moist airmass and generated thunderstorms. Some thunderstorms produced locally 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 Oct 24, 5:29 PM CST, 46 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 629 PM CDT Thu Oct 24 2019 .AVIATION... A strong cold front is currently progressing across the area and has already passed over KDRT. Scattered to widespread thunderstorms are ongoing ahead and along the front with both the AUS and SAT under an Airport Weather Warning for lighting within 5 miles. Winds will be gusty behind the front gusting up to 35 kts from the north. The front will approach the I-35 terminals within the next couple of hours. Showers and thunderstorms will continue along and slightly behind the front, before clearing all terminals early tomorrow morning. && .PREV DISCUSSION... /ISSUED 310 PM CDT Thu Oct 24 2019/ SHORT TERM (Tonight through Friday Night)... At 3PM the cold front was just south of a Brady to Sonora line with the dry line pushing into far northwest Val Verde County. As mentioned in the morning update, the 12Z HREF guidance has converged nicely on the timing of the front and convective evolution across the area. Capping has almost completely eroded and SPC mesoanalysis reveals MLCAPE of around 1500-2000 J/kg developing through portions of the southern Edwards Plataea and northwest Hill Country. We expect additional shower and storm development through the late afternoon across this region as forcing from the front arrives and overtakes the dryline. Initially some storms could produce small to marginally severe hail in addition to stronger downdrafts producing gusty winds. Guidance is in agreement with a line of storms evolving this evening into the remainder of the Hill Country and I-35 corridor trailing all the way back to the Rio Grande. There still could be a window for strong to marginally severe storms up through the I-35 corridor, before updrafts begin to get undercut by the cold pool. However, the main threat as the storms develop into portions of the southeast Hill Country and urban areas of the I-35 corridor will be heavy rainfall. Rainfall rates could lead to localized areas of flash flooding concerns. A widespread 1-2 inches of rainfall is indicated across this region. However, convective allowing and global models have been consistent with indicating pockets of 3-4 inches. Where these pockets occur is difficult to pinpoint, but will likely be the locations for the potential for flooding. Hi resolution and global models have trended more progressive with the rain ending west to east early Friday morning, and so has our forecast, as dry slotting around the base of the mid and upper level low occurs across South Central Texas. A Wind Advisory has been issued for post frontal winds. Initially a strong surge of wind is forecast to develop down the Rio Grande and portions of the I-35 corridor behind the front this evening, then a little more widespread mid morning through early afternoon on Friday. Sustained winds of 20-30 mph are expected, with some locations seeing gusts around 35-40 mph. Much cooler on Friday with high temperatures tricky. The NAM12 is colder and slower clearing out the cloud cover versus the global models. Generally mid an upper 50s are forecast through the Hill Country and Central Texas with low to mid 60s elsewhere, however the gusty north winds will make it feel cooler. Winds gradually subside late in the day on Friday, with lows by Saturday morning into the 40s for most locations, and even upper 30s across portions of the Hill Country. LONG TERM (Saturday through Thursday)... Another upper level trough is forecast to develop across the western CONUS on Sunday and move east through the southern Rockies and into the Plains on Monday. A warming trend is expected across the area over the weekend. This some disagreement still in the models on whether a weak, dry frontal boundary will make it into the area on Monday, with the GFS indicating a passage but the 12Z ECMWF not indicating the weak front until Tuesday. Global models do agree on a stronger front for Wednesday, however the GFS is dry while the ECMWF and Canadian develop precip along and behind. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 48 59 46 70 48 / 100 20 - 0 0 Austin Bergstrom Intl Airport 49 60 45 70 46 / 100 20 - 0 0 New Braunfels Muni Airport 48 64 44 71 46 / 100 10 - 0 0 Burnet Muni Airport 44 56 41 68 45 / 100 10 - 0 0 Del Rio Intl Airport 46 65 41 76 47 / 50 - - 0 0 Georgetown Muni Airport 46 58 43 69 46 / 100 20 10 0 0 Hondo Muni Airport 47 65 43 74 46 / 100 - - 0 0 San Marcos Muni Airport 47 60 44 71 45 / 100 10 - 0 0 La Grange - Fayette Regional 52 61 46 70 46 / 100 20 - - 0 San Antonio Intl Airport 49 63 46 71 49 / 100 10 - 0 0 Stinson Muni Airport 50 65 46 71 48 / 100 10 - 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... Wind Advisory until 4 PM CDT Friday for Atascosa-Bandera-Bastrop- Bexar-Blanco-Burnet-Caldwell-Comal-De Witt-Dimmit-Edwards-Fayette- Frio-Gillespie-Gonzales-Guadalupe-Hays-Karnes-Kendall-Kerr-Kinney- Lavaca-Lee-Llano-Maverick-Medina-Real-Travis-Uvalde-Val Verde- Williamson-Wilson-Zavala. && Aviation...YB Short-Term/Long-Term...05
Hazardous Weather Outlook...UPDATED National Weather Service Austin/San Antonio TX 318 PM CDT Thu Oct 24 2019 TXZ171>173-183>194-202>209-217>225-228-252030- 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- 318 PM CDT Thu Oct 24 2019 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...This Afternoon And Tonight. Scattered showers and thunderstorms will develop through the northern Hill Country and northern Rio Grande this afternoon, developing into a line of showers and thunderstorms through the remainder of the Hill Country and I-35 corridor late afternoon and evening . The line of storms is forecast to push into the Coastal Plains late evening and overnight. Some storms could become strong to severe through the late afternoon and evening, producing hail up to the sized of quarters and wind gusts to 60 mph. In addition, locally heavy rainfall is forecast over the Hill Country, I-35 corridor, and eastward. Rainfall rates could lead to pockets of flash flooding, especially over portions of the Hill Country and urban areas of the I-35 corridor. In the wake of the cold front, strong northerly winds are expected tonight through mid afternoon on Friday. Sustained winds of 20 to 30 mph sustained winds and gusts in some areas between 35 to 40 mph are forecast. A Wind Advisory has been issued. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Sustained winds of 20 to 30 mph sustained winds and gusts in some areas between 35 to 40 mph are forecast on Friday. A Wind Advisory has been issued. Elevated to near critical fire weather conditions are possible Friday afternoon across western Val Verde County, where little rain is expected tonight and gusty winds and low relative humidity develop. No additional hazardous weather is expected. .SPOTTER INFORMATION STATEMENT... Spotter are encouraged to reports any hail, wind damage, or heavy rainfall and flooding reports.
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</html>The Laughlin AFB radar (KDFX), 51 km away, was scanning. The volume nearest the first event began at 00:14 UTC.
14 flash flood, 1 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced a wind gust measured at 50 kts. by the AWOS at the Maverick County Memorial International Airport.
Thunderstorms produced heavy rain that led to flash flooding. The Austin Fire Department made a water rescue in the 700 block of North Bluff Dr. in southern Austin. Rainfall reports in the area were three to four inches.
Thunderstorms produced heavy rain that led to flash flooding. The Austin Fire Department made a water rescue in the 700 block of Turtle Creek Blvd. in southern Austin. Rainfall reports in the area were between three and four inches.
Thunderstorms produced heavy rain that led to flash flooding. The Austin Fire Department made a water rescue at S. 1st St. and W. Oltorf St. in southern Austin. There were reports of several cars in the water. Rainfall reports in the area were between one and three inches.
Thunderstorms produced heavy rain that led to flash flooding. The Austin Fire Department rescued one person from a vehicle stuck in water at the 400 block of W. Slaughter Ln. Rainfall reports in the area were between two and four inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at 11700 S. Hausman Rd. near French Creek in northwestern San Antonio. Rainfall totals in the area were between two and four inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at N. Loop 1604 and John Peace Blvd. in northern San Antonio. Rainfall reports in the area were between two and four inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at I-10 and Callaghan Rd. in northern San Antonio. Rainfall reports in the area were around three inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue on La Cantera Terrace in northern San Antonio. Rainfall reports in the area were between two and four inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at 11920 Orsinger Ln. near Olmos Creek in northern San Antonio. Rainfall reports in the area were around three inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at Vance Jackson Rd. and Dreamland Dr. near Olmos Creek in northern San Antonio. Rainfall reports in the area were around three inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at I-35 and Starlight Terrace near Beitel Creek in northeastern San Antonio. Rainfall reports in the area were between two and three inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at I-35 and Walzem Rd. near Walzem Creek in northeastern San Antonio. Rainfall reports in the area were between two and three inches.
Thunderstorms produced heavy rain that led to flash flooding. The San Antonio Fire Department made a water rescue at the Salado Creek Greenway near Hwy 281 and Maltsberger Ln. in northern San Antonio. Rainfall reports in the area were between two and three inches.
Thunderstorms produced heavy rain that led to flash flooding. I-35 was closed in both directions with three feet of water over the road. Rainfall reports in the area were between two and three inches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2019Every state in 2019This day in weather historyWarnings in Texas, October 2019
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 2026-10-01. Each event’s entry at NCEI: 859386, 859379, 859381, 859384, 859385, 859997, 859998, 859999, 860000, 860001, 860002, 860003, 860004, 860005, 860006.