Showers and thunderstorms along the IH-35 corridor on the morning of June 20 produced heavy rain and 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.
Showers and thunderstorms along the IH-35 corridor on the morning of June 20 produced heavy rain and 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 20, 8:39 AM CST, 21 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 939 AM CDT WED JUN 20 2007 .UPDATE... UPDATED FORECAST TO DROP THE SEVERE THUNDERSTORM WATCH AND RECONFIGURE 1ST PERIOD POPS WITH DECAYING MCS OVER THE CENTER OF OUR CWFA. ALSO DROPPED 1ST PERIOD MAX TEMPS BY 1-4 DEGREES GIVEN RAIN-COOLING. NEW SUITE OF PRODUCTS OUT SHORTLY. && .PREV DISCUSSION... /ISSUED 636 AM CDT WED JUN 20 2007/ AVIATION... MVFR CONDITIONS WILL PREVAIL THROUGH 18Z. THE LEADING LINE OF THUNDERSTORMS WILL MOVE THROUGH THE TERMINAL AERODROMES BY 14Z WITH WIND GUSTS UP TO 55 KTS AND IFR VSBY IN DRENCHING RAINS. A STABLE AIRMASS THIS AFTERNOON WILL BE THE RESULT OF THE CURRENT CONVECTIVE ACTIVITY WITH VFR DEBRIS CLOUDS. A NARROW TROPICAL TAP MAY REMAIN OVER RIO GRANDE PLAINS THROUGHOUT THE DAY KEEPING MVFR CONDITIONS OVER KDRT. OTHERWISE, MVFR CIGS WILL RETURN TO ALL LOCATIONS AFTER 06Z TONIGHT. PREV DISCUSSION... /ISSUED 552 AM CDT WED JUN 20 2007/ UPDATE... HAVE UPDATED TO EXTEND SEVERE THUNDERSTORM WATCH 427 WEST ACROSS THE HILL COUNTRY TO VAL VERDE COUNTY BASED ON DERECHO MOVEMENT. PREV DISCUSSION... /ISSUED 447 AM CDT WED JUN 20 2007/ UPDATE... HAVE INCLUDED SEVERE THUNDERSTORM WATCH 427 FOR NORTHEASTERN AREAS OF SOUTH CENTRAL TEXAS. THIS INCLUDES BASTROP...BLANCO...BURNET... GILLESPIE...HAYS...LEE...LLANO...TRAVIS...AND WILLIAMSON COUNTIES. DERECHO CONTINUES TO PLUNGE SOUTH INTO CENTRAL TEXAS. PREV DISCUSSION... /ISSUED 409 AM CDT WED JUN 20 2007/ DISCUSSION... RAIN CHANCES HAVE SIGNIFICANTLY INCREASED FOR SOUTH CENTRAL TEXAS FOR TODAY COMPARED TO EARLIER FORECASTS. DERECHO PLUNGING SOUTH ACROSS WEST CENTRAL TO NORTH CENTRAL TEXAS. OUTFLOW BOUNDARY FROM MCS THAT MOVED OFF THE CENTRAL GULF COAST TUESDAY IS MOVING WEST ACROSS SOUTHEASTERN TEXAS. WEAK INVERTED TROUGH OVER NORTHERN MEXICO. AREA NATIONAL WEATHER SERVICE RADARS SHOW SHOWERS AND THUNDERSTORMS ALREADY FORMING ACROSS THE RIO GRANDE PLAINS AND WESTERN HILL COUNTRY. AIRMASS IS MOIST WITH PWS AROUND TWO INCHES, UNSTABLE WITH LI-S OF -7 TO -9 C AND CAPES OF 2K TO 3K J/KG, AND INCREASINGLY UNCAPPED WITH CINH FALLING UNDER 10 J/KG. UNDER THE INFLUENCE OF THE ABOVE FEATURES, EXPECT SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS SOUTH CENTRAL TEXAS TODAY. WILL MENTION LOCALLY HEAVY RAINFALL FOR TODAY. MAY HAVE TO ADD MENTION OF SEVERE IF CONVECTIVE PARAMETERS CONTINUE THEIR TRENDS OF BECOMING MORE POTENT. AFTER TODAY, SUBTROPICAL RIDGE TRIES TO ASSERT ITSELF WITH SUBSIDENCE INCREASING AND MOISTURE SLOWLY DECREASING. THE MEXICAN INVERTED TROUGH AND RESIDUAL BOUNDARIES WILL PERSIST INTO THURSDAY MAKING FOR SLIGHT CHANCE POPS ACROSS MUCH OF SOUTH CENTRAL TEXAS. AIRMASS DRIES OUT ENOUGH FOR NO POPS FRIDAY THROUGH MONDAY, ALTHOUGH CANNOT RULE OUT AN ISOLATED SHOWER OR THUNDERSTORM IN THE LATE AFTERNOON EACH DAY. SOME MODELS WANT TO RETAIN A WEAKNESS IN THE RIDGE OR EVEN THE MEXICAN INVERTED TROUGH AND SHOULD THEY VERIFY, THEN POPS MAY HAVE TO BE INTRODUCED FOR PARTS OF THAT PERIOD. AN EASTERLY WAVE MOVES ACROSS SOUTHERN TEXAS LEADING TO SLIGHT CHANCE TO LOW END CHANCE POPS TUESDAY INTO NEXT WEDNESDAY. HAVE GENERALLY GONE WITH MEX GUIDANCE TEMPERATURES THE TODAY THROUGH TUESDAY. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 90 75 94 72 95 / 50 20 20 10 10 AUSTIN BERGSTROM INTL AIRPORT 90 71 93 70 95 / 50 20 20 10 10 DEL RIO INTL AIRPORT 89 75 94 73 94 / 70 30 - 10 - SAN ANTONIO INTL AIRPORT 89 74 92 72 93 / 80 20 20 10 10 && .EWX WATCHES/WARNINGS/ADVISORIES... NONE. && 11/08/DC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 356 AM CDT WED JUN 20 2007 TXZ171>173-183>194-202>209-217>225-228-210900- 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- 356 AM CDT WED JUN 20 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MOST OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TODAY. THIS INCLUDES THE METROPOLITAN AREAS OF AUSTIN AND SAN ANTONIO. THE MAIN THREAT IS DAMAGING WINDS. LOCALLY HEAVY RAINFALL IS POSSIBLE TODAY AND TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS MORNING.
The Austin/San Antonio radar (KEWX), 51 km away, was scanning. The volume nearest the first event began at 15:00 UTC.
7 flash flood, 1 flood. Local standard time, as filed.
Thunderstorms produced from 2 to 3 inches of rain over eastern Travis County, with up to 5 inches near Manor. Closed due to high water were Dessau Road, FM969, and FM973.
Thunderstorms produced 2 to 3 inch rain totals over extreme eastern Williamson County with up to 4 inches near Coupland. Among the Williamson County roads due to high water were FM619 and FM973.
Thunderstorms produced 2 to 3 inch rain totals over northwest Bastrop County, with up to 4 inches between Cedar Creek and Utley. Many roads in Bastrop County were closed due to high water, including FM969 and FM1704.
Thunderstorms produced 2 to 3 inch rain totals over the southwest quarter of Bexar County with up to 4 inches along US90 from San Antonio to the Medina County line. Closed due to high water were FM1957 and FM471.
Thunderstorms in eastern Medina County produced from 2 to 4 inches of rain along US90 from Dunlay to the Bexar County line. FM471, FM1343, and FM1957 were closed due to high water.
Thunderstorms produced 2 to 3 inch rain totals from Kyle eastward to the Caldwell County line, with up to 4 inches just east of Kyle. FM150 and FM2001 were closed through the early afternoon due to high water.
Thunderstorms produced from 2 to 4 inches of rain between Fentres and Kingsbury. Flash flooding forced the closure of both FM20 and US 80.
Wilbarger Creek at Elgin crested at 30.2 feet at 2300cst on June 20, where 27 feet is flood stage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2007Every state in 2007This day in weather historyWarnings in Texas, June 2007
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: 42731, 42732, 42733, 42735, 42736, 42737, 42738, 42740.