000 WTNT34 KNHC 292035 TCPAT4 BULLETIN TROPICAL STORM DON ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL042011 400 PM CDT FRI JUL 29 2011 ...CENTER OF DON APPROACHING THE COAST OF SOUTH TEXAS...RAINBANDS SPREADING ONSHORE... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...26.9N 96.2W ABOUT 95 MI...155 KM SE OF CORPUS CHRISTI TEXAS ABOUT 105 MI...170 KM NE OF BROWNSVILLE TEXAS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * TEXAS COAST FROM THE MOUTH OF THE RIO GRANDE TO MATAGORDA INTERESTS IN NORTHEASTERN MEXICO SHOULD MONITOR THE PROGRESS OF DON. FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 400 PM CDT...2100 UTC...THE CENTER OF TROPICAL STORM DON WAS LOCATED NEAR LATITUDE 26.9 NORTH...LONGITUDE 96.2 WEST. DON IS MOVING TOWARD THE WEST-NORTHWEST NEAR 16 MPH...26 KM/H...AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 36 TO 48 HOURS. ON THE FORECAST TRACK...THE CENTER OF DON IS EXPECTED TO MAKE LANDFALL ON THE SOUTHERN TEXAS COAST TONIGHT...AND THEN MOVE ACROSS SOUTHERN TEXAS ON SATURDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH...85 KM/H...WITH HIGHER GUSTS. SOME STRENGTHENING IS POSSIBLE BEFORE LANDFALL...WHILE STEADY WEAKENING IS EXPECTED AFTER LANDFALL. DON IS EXPECTED TO DISSIPATE OVER SOUTHERN TEXAS OR NORTHERN MEXICO BY SUNDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 105 MILES...165 KM MAINLY TO THE NORTH AND EAST OF THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MB...29.65 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA DURING THE NEXT SEVERAL HOURS. STORM SURGE...WATER LEVELS WILL RISE BY AS MUCH AS 1 TO 2 FEET ABOVE GROUND LEVEL...MAINLY ALONG THE IMMEDIATE COAST NEAR AND TO THE NORTHEAST OF WHERE THE CENTER MAKES LANDFALL. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DAMAGING WAVES. RAINFALL...DON IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 2 TO 4 INCHES FROM SOUTH TEXAS INTO EXTREME NORTHEASTERN MEXICO... WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 6 INCHES. TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER PORTIONS OF SOUTH TEXAS TONIGHT. NEXT ADVISORY ------------- NEXT INTERMEDIATE ADVISORY...700 PM CDT. NEXT COMPLETE ADVISORY...1000 PM CDT. $$ FORECASTER BEVEN