Isolated thunderstorms formed in southerly flow in a moist, conditionally unstable airmass on consecutive days. A few 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.
Isolated thunderstorms formed in southerly flow in a moist, conditionally unstable airmass on consecutive days. A few 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 Jun 21, 1:45 PM CST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 245 PM CDT SUN JUN 21 2015 .SHORT TERM (TONIGHT THROUGH MONDAY NIGHT)... NEARLY IDENTICAL SET UP TODAY AS YESTERDAY WITH CONVECTION FORMING ALONG AND EAST OF THE 700 MB TROUGH AXIS AND PROPAGATING NORTHWARD IN THE MEAN FLOW. THEREFORE...THE FORECAST HAS HIGH POPS AND MENTION OF LOCALLY HEAVY RAIN IN THE WESTERN HALF OF THE AREA... WITH CHANCE POPS FURTHER EAST. CONVECTION ALLOWING MODELS (CAMS) INDICATE THE SPIN UP OF AN MCV...AND/OR THE TRANSITION OF THE 500 MB CLOSE LOW OVER NORTHEAST TEXAS SOUTHWESTWARD THIS EVENING. IF THIS EVOLUTION OCCURS...RAINFALL ALONG THE RIO GRANDE PLAINS AND IN THE WINTER GARDEN SOUTHWEST OF SAN ANTONIO WILL CONTINUE THROUGH THE NIGHT. WHILE OVERALL QPF IS NOT EXPECTED TO BE DRAMATIC...MANY LOCATIONS SOUTHWEST OF SAN ANTONIO MAY RECEIVE 1/2 TO 1 INCH AND A FEW SPOTS UP TO 2 INCHES BY 7 AM MONDAY. LOOK FOR THE START OF THE DRYING...THEN WARMING TREND ON MONDAY AS THE SUBTROPICAL RIDGE BEGINS TO RE-ESTABLISH ITSELF ACROSS THE SOUTHERN U.S. AND DISSIPATES/MOVES THE PERSISTENT TROUGH OVER TEXAS. PW IS STILL HIGH ENOUGH THAT LOW POPS WERE RETAINED ON MONDAY. && .LONG TERM (TUESDAY THROUGH SUNDAY)... THE SUBTROPICAL RIDGE CONTINUES TO BUILD...BUT FLATTENS OUT... THUS SUBSIDENCE WILL DRY THINGS OUT...AND TEMPS WARM...BUT NOT PARTICULARLY HOT DUE TO THE LOW HEIGHTS OF THE RIDGE AND STILL MOIST CONDITIONS USING UP NEAR-SURFACE HEATING FOR EVAPORATION. TEMPS SHOULD CLIMB BACK TO SEASONAL NORMALS BY THE END OF THE WEEK. A LARGE LONGWAVE TROUGH IN THE GULF OF ALASKA WILL FORCE A RIDGE OVER THE GREAT BASIN...AND THUS A RESULTING TROUGH OVER THE MISSISSIPPI RIVER VALLEY. THIS WILL BRING A COLD FRONT INTO AT LEAST OKLAHOMA...IF NOT NORTHEAST TEXAS AND POSSIBLY AS FAR SOUTH AS OUR AREA EARLY NEXT WEEK. THE UPPER LEVEL FLOW WILL BE FAVORABLE FOR MCS DEVELOPMENT OVER THE TEXAS PANHANDLE AND OKLAHOMA...THEN PROPAGATING SOUTH INTO OUR AREA AND BRINGING A CHANCE OF RAIN AND POSSIBLY SEVERE STORMS WITH DAMAGING WINDS. THE FIRST CHANCE OF ANY OF THIS ACTIVITY OR RAIN IS NEXT SUNDAY. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 74 91 73 90 73 / 50 20 - 10 10 AUSTIN BERGSTROM INTL AIRPORT 73 91 72 90 72 / 50 20 - 10 10 NEW BRAUNFELS MUNI AIRPORT 74 91 73 89 74 / 50 20 - 10 10 BURNET MUNI AIRPORT 72 90 72 89 73 / 50 20 - 10 10 DEL RIO INTL AIRPORT 73 90 74 90 75 / 60 20 20 20 20 GEORGETOWN MUNI AIRPORT 73 91 72 90 73 / 50 20 - 10 10 HONDO MUNI AIRPORT 73 89 73 89 74 / 70 20 - 10 10 SAN MARCOS MUNI AIRPORT 73 90 73 90 73 / 50 20 - 10 10 LA GRANGE - FAYETTE REGIONAL 75 90 74 90 75 / 40 20 - 10 10 SAN ANTONIO INTL AIRPORT 75 89 74 89 75 / 60 20 - 10 10 STINSON MUNI AIRPORT 75 90 74 90 76 / 60 20 - 10 10 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && MESOSCALE/AVIATION...HAMPSHIRE SYNOPTIC/GRIDS...26 PUBLIC SERVICE/DATA COLLECTION...30
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 355 AM CDT SUN JUN 21 2015 TXZ171>173-183>194-202>209-217>225-228-220900- 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- 355 AM CDT SUN JUN 21 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS ARE AGAIN EXPECTED ACROSS MUCH OF SOUTH-CENTRAL TEXAS TODAY...AND WESTERN AREAS OF SOUTH TEXAS TONIGHT. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE...ESPECIALLY NEAR AND WEST OF A KERRVILLE TO PLEASANTON LINE TODAY AND TONIGHT...WHERE A QUICK 1 TO 3 INCHES COULD BE POSSIBLE IN SOME ISOLATED SPOTS LEADING TO LOCALIZED FLASH FLOODING. A FEW STORMS ALSO COULD PRODUCE WIND GUSTS OVER 40 MPH TODAY AND TONIGHT. IN ADDITION...DANGEROUS CLOUD TO GROUND LIGHTNING WILL OCCUR WITH THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. ISOLATED SHOWERS AND THUNDERSTORMS ARE POSSIBLE MONDAY AND TUESDAY ALONG THE RIO GRANDE...AND WEDNESDAY AND THURSDAY NEAR AND EAST OF INTERSTATE 35. THE MAIN THREAT WILL BE DANGEROUS CLOUD TO GROUND LIGHTNING WITH THESE THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO SUBMIT EXCESSIVE RAINFALL REPORTS.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1244 PM CDT SUN JUN 21 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 PM FLOOD 7 SE PEARSALL 28.81N 99.03W
06/21/2015 FRIO TX LAW ENFORCEMENT
LOCALIZED DOWNPOUR CAUSED WATER TO COVER THE ROADWAY AT
THE INTERSECTION OF FM1582 AND FM3329
&&
EVENT NUMBER EWX1500724
SBSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
127 PM CDT SUN JUN 21 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 PM HEAVY RAIN 2 NW SERENADA 30.72N 97.71W
06/21/2015 M1.78 INCH WILLIAMSON TX AMATEUR RADIO
RAIN FELL BETWEEN 10AM AND 1PM
&&
EVENT NUMBER EWX1500725
SBSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
206 PM CDT SUN JUN 21 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM FLOOD 3 N HOLLYWOOD PARK 29.64N 98.49W
06/21/2015 BEXAR TX TRAINED SPOTTER
WATER TO THE TOP OF THE CURB AT HARDY OAK BLVD AND
STONE OAK PKWY
&&
EVENT NUMBER EWX1500726
SBSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CDT SUN JUN 21 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0240 PM FLOOD BANDERA 29.72N 99.07W
06/21/2015 BANDERA TX LAW ENFORCEMENT
MINOR STREET FLOODING REPORTED AROUND THE CITY.
POSSIBLE ROAD CLOSURE ALONG WHARTONS DOC ROAD SOUTHEAST
OF BANDERA
&&
EVENT NUMBER EWX1500727
SBSThe Austin/San Antonio radar (KEWX), 99 km away, was scanning. The volume nearest the first event began at 20:15 UTC.
2 flash flood. Local standard time, as filed.
Thunderstorms produced heavy rain that caused flash flooding closing Whartons Dock Rd. There was 11 inches of water over the road at Julian Creek. The road was also closed at Rodeo Rd.
Thunderstorms produced heavy rain that caused flash flooding trapping a vehicle in water on Old Castroville Rd. near Spanish Oak Dr.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2015Every state in 2015This day in weather historyWarnings in Texas, June 2015
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: 587442, 587444.