Thunderstorms formed along a stationary front. 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.
Thunderstorms formed along a stationary front. 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 15, 7:34 PM CST, 4 hours 6 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 834 PM CDT MON AUG 15 2016 .UPDATE... /NO SIGNIFICANT CHANGES/ Evening analysis shows pwat values falling off the highs of yesterday, but still quite moist at 2 to 2.3 inches. An early evening lull in activity along and W of I-35 should come to an end later tonight based on the rapid refresh models. Through midnight heaviest totals should remain east of Hwy 281 where a N-S oriented shear axis exists at 850 mbs. Rapid refresh models show this shear axis drifting west tonight and becoming in line with the mid level shear axis near DRT. Early morning convection should thus be able to resume west of Hwy 281 and justify the likely to categorical PoPs over much of South Central TX. Given the watch in place, only evening adjustments were to include mention of locally heavy rainfall and to tweek the overnight QPF amounts based on the current radar trends and mesoscale model trends. && .PREV DISCUSSION... /ISSUED 645 PM CDT MON AUG 15 2016/ AVIATION... Widely scattered SHRA and isolated TSRA generally remain along and east of the I-35 corridor this evening, then spread west and become more numerous either overnight or on Tuesday depending on when lower level boundaries drift to the west. For KAUS/KSAT/KSSF, have RA-/VCSH this evening into the overnight, then VCTS Tuesday afternoon. For KDRT, have VCSH Tuesday. IFR/MVFR CIGs/VSBYs will become more widespread this evening into the overnight. LIFR CIGs and VSBYs are possible, however, chances too low to mention in TAFs. NEly winds less than 10 KTS slowly turn to Ely Tuesday as the boundaries shift to the west. PREV DISCUSSION... /ISSUED 241 PM CDT MON AUG 15 2016/ SHORT TERM (Tonight through Tuesday Night)... A nice August rainfall event continues across much of South- Central Texas with the bulk of the activity remaining across the eastern two-thirds of the area. The rainfall has kept temperatures in the middle 70s which could break records for the lowest high temperatures for Mabry, Bergstrom, and San Antonio. Any breaks in cloud cover though could allow temperatures to quickly rise. The atmosphere remains very saturated with precipitable water values near 2.4 inches across the eastern CWA with lesser values in the west. An upper level trough axis continues to slowly move through the Southern Plains this afternoon. The subtropical high to the east and another to the west is allowing this trough to move slowly which is sustaining the large scale lift across the area. At 850 mb there is a trough axis nearly bisecting the CWA with southerly flow to the east of the trough. In addition, a stalled boundary at the surface is also helping to enhance shower activity. Most of the precipitation will continue to be east of the 850 trough and along and east of the surface boundary and will continue to have the higher PoPs for these locations. Some of the model guidance is progging the 850 trough to slightly move east this afternoon before moving farther to the west by midnight. This will keep the higher chances of rain tonight mainly east of an Eagle Pass to Llano line. Rain chances are expected to be high once again tomorrow as all the previously mentioned features remain nearly stationary through the afternoon. Again, the bulk of the heavier activity will be east of that Eagle Pass to Llano line where the highest precipitable water values are located. Much of the CWA has already received 1-4 inches with some isolated higher amounts across portions of the area. The rainfall has been nearly perfect as hourly rain accumulations have been generally less than a half an inch per hour which has allowed for very little impacts other than minor flooding. However, if we do see any heavier downpours tonight or tomorrow afternoon, the grounds will be nearly saturated and there could be a threat for slightly more flooding concerns. Because of this, have opted to extend the Flash Flood Watch through 7 PM on Tuesday. Do not anticipate widespread flash flooding, but there could be Flash Flood Warnings needed. As has been the case the past several nights, there should be somewhat of a break early Tuesday night before some additional activity will be possible across much of the area with the higher concentration once again in the eastern counties. LONG TERM (Wednesday through Monday)... By Wednesday, the stationary boundary should have already surged back to the north leaving us with southerly flow once again. However, with a weakness aloft, PWs remaining above 2 inches and adequate surface heating, we should still see scattered to numerous showers and storms on Wednesday and Thursday afternoons. Moisture values are expected to drop off by Friday and thus we should see less of a coverage of activity. There is a threat of another widespread rain event by Saturday and Sunday as another trough passes through the Central Plains. This system is expected to be somewhat similar to the current system with a boundary stalling somewhere over Texas. Will increase PoPs to 20 to 40 percent for now for the weekend before lowering them slightly for Monday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 71 83 73 84 73 / 80 80 50 60 30 Austin Bergstrom Intl Airport 72 83 72 84 72 / 80 80 50 60 30 New Braunfels Muni Airport 73 84 72 85 73 / 80 80 50 70 30 Burnet Muni Airport 70 80 71 83 72 / 70 80 40 60 40 Del Rio Intl Airport 68 85 72 86 73 / 60 60 40 50 40 Georgetown Muni Airport 71 81 72 83 73 / 80 80 50 60 40 Hondo Muni Airport 72 83 72 86 73 / 80 80 50 70 30 San Marcos Muni Airport 72 83 72 84 73 / 80 80 50 70 30 La Grange - Fayette Regional 74 86 74 87 74 / 60 80 50 60 30 San Antonio Intl Airport 73 84 73 86 74 / 80 80 50 70 30 Stinson Muni Airport 74 84 74 87 74 / 80 80 50 70 30 && .EWX WATCHES/WARNINGS/ADVISORIES... Flash Flood Watch through Tuesday evening for the following counties: Atascosa...Bandera...Bastrop...Bexar...Blanco...Burnet... Caldwell...Comal...De Witt...Dimmit...Fayette...Frio...Gillespie... Gonzales...Guadalupe...Hays...Karnes...Kendall...Kerr...Lavaca... Lee...Llano...Medina...Real...Travis...Uvalde...Williamson... Wilson...Zavala. && Mesoscale/Aviation...04 Synoptic/Grids...Oaks Public Service/Data Collection...Williams
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 233 PM CDT MON AUG 15 2016 TXZ171>173-183>194-202>209-217>225-228-161945- 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- 233 PM CDT MON AUG 15 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS ARE EXPECTED THROUGH LATE TONIGHT ACROSS THE HILL COUNTRY AS WELL AS ALONG AND EAST OF I-35. THESE SHOWERS AND STORMS MAY EXPAND WEST INTO PORTIONS OF THE RIO GRANDE PLAINS AND WESTERN EDWARDS PLATEAU TONIGHT. LOCALLY HEAVY RAINFALL IS POSSIBLE WITH THESE STORMS WHICH COULD LEAD TO FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR COUNTIES ALONG AND EAST OF U.S. 83. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE WITH ISOLATED TOTALS UP TO 3 INCHES. REMEMBER...TURN AROUND DON'T DOWN IF YOU ENCOUNTER A FLOODED ROADWAY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TUESDAY WITH SCATTERED SHOWERS AND STORMS WEDNESDAY AND THURSDAY. LOCALLY HEAVY RAINFALL IS POSSIBLE AGAIN ON TUESDAY AND COULD LEAD TO FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT THROUGH TUESDAY EVENING. REMEMBER...TURN AROUND DONT DOWN IF YOU ENCOUNTER A FLOODED ROADWAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. HOWEVER SPOTTERS AND COCORAHS OBSERVERS ARE ENCOURAGED TO REPORT TO THE NWS ANY SIGNIFICANT RAINFALL AMOUNTS AND FLOODING REPORTS.
The Ft Hood radar (KGRK), 85 km away, was scanning. The volume nearest the first event began at 05:41 UTC.
9 flash flood. Local standard time, as filed.
Thunderstorms produced heavy rain causing flash flooding closing low water crossings on Commerce St. and Nature Heights Dr. in Marble Falls.
Thunderstorms produced heavy rain that caused flash flooding closing multiple low water crossings in Hays County including one on FM967 at Brangus Rd.
Thunderstorms produced heavy rain that caused flash flooding closing a low water crossing on Cow Creek Rd. along Cow Creek.
Thunderstorms produced heavy rain that caused flash flooding closing Hero Way at Winding Oak Tr. in Leander.
Thunderstorms produced heavy rain that caused flash flooding closing FM243 at FM1174 near Bertram.
Thunderstorms produced heavy rain that caused flash flooding closing Elroy Rd. at McAngus Rd. in Del Valle.
Thunderstorms produced heavy rain that caused flash flooding closing Loop 360 at Bull Creek between Spicewood Springs Rd. and RR2222 in northwestern Austin.
Thunderstorms produced heavy rain that caused flash flooding closing a low water crossing near the 1500 block of Tomahawk Tr.
Thunderstorms produced heavy rain that caused flash flooding sending Caracol Creek over Potranco Rd. near Loop 1604 in western San Antonio.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2016Every state in 2016This day in weather historyWarnings in Texas, August 2016
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: 655710, 655711, 655713, 655715, 655716, 655718, 655721, 655722, 655727.