949 FONT14 KNHC 120259 PWSAT4 TROPICAL STORM ISAAC WIND SPEED PROBABILITIES NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092018 0300 UTC WED SEP 12 2018 AT 0300Z THE CENTER OF TROPICAL STORM ISAAC WAS LOCATED NEAR LATITUDE 14.5 NORTH...LONGITUDE 52.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 55 KTS...65 MPH...100 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 00Z WED AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 00Z WED 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN PERIODS TO TO TO TO TO TO TO 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN 00Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT PT GALLINAS 34 X X( X) X( X) X( X) 2( 2) 2( 4) X( 4) PORT-AU-PRINCE 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) CAPE BEATA 34 X X( X) X( X) X( X) 4( 4) 6(10) X(10) PONCE PR 34 X X( X) X( X) 1( 1) 2( 3) X( 3) X( 3) VIEQUES PR 34 X X( X) X( X) 3( 3) 4( 7) X( 7) X( 7) SAINT THOMAS 34 X X( X) X( X) 3( 3) 3( 6) X( 6) X( 6) SAINT CROIX 34 X X( X) X( X) 5( 5) 5(10) X(10) X(10) SAINT MAARTEN 34 X X( X) 2( 2) 4( 6) X( 6) X( 6) X( 6) ST KITTS-NEVIS 34 X X( X) 3( 3) 8(11) 1(12) X(12) X(12) BARBUDA 34 X 1( 1) 4( 5) 4( 9) X( 9) X( 9) X( 9) ANTIGUA 34 X 1( 1) 6( 7) 6(13) 1(14) X(14) X(14) GUADELOUPE 34 X 2( 2) 14(16) 15(31) X(31) X(31) X(31) GUADELOUPE 50 X X( X) 1( 1) 3( 4) X( 4) X( 4) X( 4) AVES 34 X X( X) 3( 3) 33(36) 6(42) X(42) X(42) AVES 50 X X( X) X( X) 6( 6) 3( 9) X( 9) X( 9) AVES 64 X X( X) X( X) 1( 1) X( 1) X( 1) X( 1) DOMINICA 34 X 2( 2) 23(25) 24(49) X(49) X(49) X(49) DOMINICA 50 X X( X) 3( 3) 6( 9) 1(10) X(10) X(10) MARTINIQUE 34 X 2( 2) 24(26) 13(39) X(39) X(39) X(39) MARTINIQUE 50 X X( X) 4( 4) 4( 8) 1( 9) X( 9) X( 9) MARTINIQUE 64 X X( X) 1( 1) 1( 2) X( 2) X( 2) X( 2) SAINT LUCIA 34 X 1( 1) 8( 9) 5(14) X(14) X(14) X(14) SAINT LUCIA 50 X X( X) 1( 1) 2( 3) X( 3) X( 3) X( 3) SAINT VINCENT 34 X 1( 1) 1( 2) 2( 4) X( 4) X( 4) X( 4) BARBADOS 34 X 2( 2) 2( 4) 1( 5) X( 5) X( 5) X( 5) $$ FORECASTER BERG