Flash Flood Watch at Current News

Issued At: Wednesday, 09 May 2012, 3:02 PM CDT
Expires At: Friday, 11 May 2012, 12:00 PM CDT

URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 302 PM CDT WED MAY 9 2012 ...A FLASH FLOOD WATCH IS IN EFFECT FOR ALL OF SOUTH CENTRAL TEXAS FROM 6 PM THURSDAY EVENING UNTIL NOON FRIDAY... .AN UPPER LEVEL LOW PRESSURE SYSTEM ACROSS NORTHERN MEXICO WILL MOVE EASTWARD INTO WEST TEXAS TONIGHT. THE UPPER LOW WILL CONTINUE TO MOVE ACROSS TEXAS THURSDAY AND FRIDAY BEFORE MOVING INTO EAST TEXAS ON SATURDAY. THE UPPER LEVEL LOW WILL COMBINE WITH A MOIST AND UNSTABLE AIRMASS ACROSS SOUTH CENTRAL TEXAS TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS THE REGION. CHANCES FOR RAIN WITH THIS SYSTEM WILL INCREASE FROM WEST TO EAST BEGINNING WEDNESDAY NIGHT AND SPREAD TO MUCH OF THE REGION BY THURSDAY AFTERNOON. NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED THURSDAY EVENING THROUGH FRIDAY MORNING...BEFORE DECREASING FROM WEST TO EAST FRIDAY AFTERNOON. IN ADDITION TO THE PROLONGED PERIOD OF RAIN...SOME OF THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL. SOILS HAVE BEEN MOISTENED FROM RAINFALL EARLIER THIS WEEK...SO ADDITIONAL RAINFALL WILL BE QUICK TO RUNOFF AND MAY LEAD TO FLASH FLOODING...AS WELL AS FLOODING OF SMALL CREEKS AND STREAMS. RAINFALL TOTALS FOR WEDNESDAY NIGHT THROUGH FRIDAY EVENING WILL AVERAGE 2 TO 4 INCHES. ISOLATED TOTALS HIGHER THAN 4 INCHES ARE POSSIBLE. ATASCOSA-BANDERA-BASTROP-BEXAR-BLANCO-BURNET-CALDWELL-COMAL- DEWITT-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- INCLUDING THE CITIES OF...PLEASANTON...BANDERA...BASTROP... SAN ANTONIO...BLANCO...BURNET...LOCKHART...NEW BRAUNFELS... CUERO...CARRIZO SPRINGS...ROCKSPRINGS...LA GRANGE...PEARSALL... FREDERICKSBURG...GONZALES...SEGUIN...SAN MARCOS...KARNES CITY... BOERNE...KERRVILLE...BRACKETTVILLE...HALLETTSVILLE...GIDDINGS... LLANO...EAGLE PASS...HONDO...LEAKEY...AUSTIN...UVALDE...DEL RIO... GEORGETOWN...FLORESVILLE...CRYSTAL CITY 302 PM CDT WED MAY 9 2012 ...FLASH FLOOD WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WATCH FOR THE FOLLOWING COUNTIES IN SOUTH CENTRAL TEXAS...ATASCOSA...BANDERA...BASTROP...BEXAR...BLANCO... BURNET...CALDWELL...COMAL...DEWITT...DIMMIT...EDWARDS... FAYETTE...FRIO...GILLESPIE...GONZALES...GUADALUPE...HAYS... KARNES...KENDALL...KERR...KINNEY...LAVACA...LEE...LLANO... MAVERICK...MEDINA...REAL...TRAVIS...UVALDE...VAL VERDE... WILLIAMSON...WILSON AND ZAVALA. * FROM THURSDAY EVENING THROUGH FRIDAY MORNING * AVERAGE STORM TOTAL RAINFALL AMOUNTS OF 2 TO 4 INCHES WITH ISOLATED TOTALS HIGHER THAN 4 INCHES POSSIBLE. * PERIODS OF RAIN...HEAVY AT TIMES...WILL PRODUCE FLASH FLOODING OF NORMALLY DRY CREEK BEDS...POOR DRAINAGE AREAS AND LOW WATER CROSSINGS. URBANIZED AREAS INCLUDING LOCATIONS IN AND AROUND THE AUSTIN AND SAN ANTONIO METRO AREAS CAN EXPECT RUNOFF TO MAKE SOME ROADWAYS IMPASSABLE. THE FLASH FLOOD IMPACT WILL BE HIGHEST FROM THURSDAY NIGHT INTO FRIDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS FLASH FLOODING IS POSSIBLE IN OR NEAR THE WATCH AREA. IF YOU ARE IN THE WATCH AREA...PLAN NOW FOR WHAT YOU WILL DO IF FLASH FLOODING DEVELOPS. STAY INFORMED AND BE READY TO ACT IF YOU SEE FLOODING OR IF A FLASH FLOOD WARNING IS ISSUED.

© Weather Decision Technologies, Inc. 2012.

Counties Affected: 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