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HURRICANE SAM WIND SPEED PROBABILITIES NUMBER 13
NWS NATIONAL HURRICANE CENTER MIAMI FL AL182021
2100 UTC SAT SEP 25 2021
AT 2100Z THE CENTER OF HURRICANE SAM WAS LOCATED NEAR LATITUDE 13.3
NORTH...LONGITUDE 48.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 120
KTS...140 MPH...220 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
18Z SAT 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 18Z SAT 06Z SUN 18Z SUN 06Z MON 18Z MON 18Z TUE 18Z WED
PERIODS TO TO TO TO TO TO TO
06Z SUN 18Z SUN 06Z MON 18Z MON 18Z TUE 18Z WED 18Z THU
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LOCATION KT
VIEQUES PR 34 X X( X) X( X) X( X) X( X) 1( 1) 3( 4)
SAINT THOMAS 34 X X( X) X( X) X( X) X( X) 1( 1) 5( 6)
SAINT CROIX 34 X X( X) X( X) X( X) X( X) 1( 1) 3( 4)
SAINT MAARTEN 34 X X( X) X( X) X( X) X( X) 4( 4) 7(11)
SAINT MAARTEN 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3)
SAINT MAARTEN 64 X X( X) X( X) X( X) X( X) X( X) 2( 2)
SABA 34 X X( X) X( X) X( X) X( X) 3( 3) 5( 8)
SABA 50 X X( X) X( X) X( X) X( X) X( X) 2( 2)
SABA 64 X X( X) X( X) X( X) X( X) X( X) 1( 1)
ST EUSTATIUS 34 X X( X) X( X) X( X) X( X) 4( 4) 5( 9)
ST EUSTATIUS 50 X X( X) X( X) X( X) X( X) 1( 1) 1( 2)
ST EUSTATIUS 64 X X( X) X( X) X( X) X( X) X( X) 1( 1)
ST KITTS-NEVIS 34 X X( X) X( X) X( X) X( X) 4( 4) 5( 9)
ST KITTS-NEVIS 50 X X( X) X( X) X( X) X( X) 1( 1) 1( 2)
ST KITTS-NEVIS 64 X X( X) X( X) X( X) X( X) X( X) 1( 1)
BARBUDA 34 X X( X) X( X) X( X) 1( 1) 8( 9) 7(16)
BARBUDA 50 X X( X) X( X) X( X) X( X) 2( 2) 2( 4)
BARBUDA 64 X X( X) X( X) X( X) X( X) 1( 1) 1( 2)
ANTIGUA 34 X X( X) X( X) X( X) 1( 1) 6( 7) 6(13)
ANTIGUA 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3)
ANTIGUA 64 X X( X) X( X) X( X) X( X) X( X) 1( 1)
GUADELOUPE 34 X X( X) X( X) X( X) 1( 1) 5( 6) 3( 9)
DOMINICA 34 X X( X) X( X) X( X) 1( 1) 4( 5) 1( 6)
MARTINIQUE 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4)
BARBADOS 34 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3)
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FORECASTER BEVEN
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