ZCZC NFDSCCNS3 ALL TTAA00 KNFD DDHHMM STORM SUMMARY NUMBER 25 FOR T.D. "BRET" NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION HYDROMETEOROLOGICAL PREDICTION CENTER...NWS...CAMP SPRINGS MD 1200 PM CDT TUE AUG 24 1999 AT 1145 AM CDT... THE CENTER OF TROPICAL DEPRESSION BRET WAS LOCATED NEAR 27.9N 102.0W...OR IN NORTHERN MEXICO ABOUT 80 MILES SOUTHWEST OF DEL RIO TX. THE STORM CONTINUES TO WEAKEN WITH ITS CENTRAL PRESSURE UP TO 1006 MB...AND MAXIMUM WINDS OF 20 MPH HAVE BEEN REPORTED AT OBSERVATION SITES ALONG THE RIO GRANDE. THE HEAVIEST RAINS WERE CURRENTLY FALLING WEST OF COTULLA...BETWEEN DEL RIO AND LAREDO. SATELLITE ESTIMATES OF RAINFALL DURING THE LAST THREE HOURS INDICATE THAT AROUND 3 INCHES HAS FALLEN IN THE AREA NEAR COTULLA...WITH UP TO 4.5 INCHES IN MEXICO JUST WEST OF LAREDO. TWO DAY DOPPLER RADAR ESTIMATES INDICATE THAT UP TO 25 INCHES OF RAIN HAS FALLEN ACROSS KENEDY COUNTY TX...WITH 10 INCH AMOUNTS COMMON IN THE SURROUNDING COUNTIES. FLASH FLOOD WARNINGS ARE IN EFFECT FOR ZAVALA AND DIMMIT COUNTIES UNTIL 200 PM CDT. FLASH FLOOD WATCHES CONTINUE FOR TODAY FOR MOST OF THE SOUTHERN THIRD OF TEXAS...INCLUDING THE SAN ANTONIO AREA. THE HEAVIEST RAIN IS EXPECTED TO PERSIST TODAY ALONG THE RIO GRANDE VALLEY FROM LAREDO TO DEL RIO WESTWARD WELL INTO MEXICO...WHERE AMOUNTS MAY EXCEED 5 INCHES. AREAS OF HEAVY RAIN ARE EXPECTED TO REDEVELOP FARTHER EAST ACROSS THE REMAINDER OF SOUTH TEXAS THIS AFTERNOON WHERE SEVERAL NEW INCHES MAY FALL OVER PLACES THAT HAVE ALREADY EXPERIENCED EXCESSIVE RAINFALL. THE NEXT STORM SUMMARY WILL BE ISSUED AT 600 PM CDT. HEDGE/WALLY/FORECAST OPERATIONS BRANCH NNNN