Tropical Storm ISAAC
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TROPICAL STORM ISAAC WIND SPEED PROBABILITIES NUMBER 38
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
1500 UTC THU AUG 30 2012
AT 1500Z THE CENTER OF TROPICAL STORM ISAAC WAS LOCATED NEAR
LATITUDE 31.7 NORTH...LONGITUDE 92.1 WEST WITH MAXIMUM SUSTAINED
WINDS NEAR 35 KTS...40 MPH...65 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
I. MAXIMUM WIND SPEED (INTENSITY) PROBABILITY TABLE
CHANCES THAT THE MAXIMUM SUSTAINED (1-MINUTE AVERAGE) WIND SPEED OF
THE TROPICAL CYCLONE WILL BE WITHIN ANY OF THE FOLLOWING CATEGORIES
AT EACH OFFICIAL FORECAST TIME DURING THE NEXT 5 DAYS.
PROBABILITIES ARE GIVEN IN PERCENT. X INDICATES PROBABILITIES LESS
THAN 1 PERCENT.
- - - MAXIMUM WIND SPEED (INTENSITY) PROBABILITIES - - -
VALID TIME 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON 12Z TUE
FORECAST HOUR 12 24 36 48 72 96 120
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
DISSIPATED 5 24 47 60 88 95 97
TROP DEPRESSION 66 62 52 40 12 5 2
TROPICAL STORM 29 14 1 X X X X
HURRICANE X X X X X X X
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
HUR CAT 1 X X X X X X X
HUR CAT 2 X X X X X X X
HUR CAT 3 X X X X X X X
HUR CAT 4 X X X X X X X
HUR CAT 5 X X X X X X X
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FCST MAX WIND 30KT 25KT 20KT 20KT 15KT 15KT 15KT
II. WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS
CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST
...34 KT (39 MPH... 63 KPH)...
...50 KT (58 MPH... 93 KPH)...
...64 KT (74 MPH...119 KPH)...
FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS
PROBABILITIES FOR LOCATIONS ARE GIVEN AS IP(CP) WHERE
IP IS THE PROBABILITY OF THE EVENT BEGINNING DURING
AN INDIVIDUAL TIME PERIOD (INDIVIDUAL PROBABILITY)
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN
12Z THU 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 64 KT ARE SHOWN WHEN THE 5-DAY CUMULATIVE
PROBABILITY IS AT LEAST 1 PERCENT.
- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -
FROM FROM FROM FROM FROM FROM FROM
TIME 12Z THU 00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON
PERIODS TO TO TO TO TO TO TO
00Z FRI 12Z FRI 00Z SAT 12Z SAT 12Z SUN 12Z MON 12Z TUE
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
LOCATION KT
JACKSON MS 34 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4)
NEW ORLEANS LA 34 99 X(99) X(99) X(99) X(99) X(99) X(99)
BATON ROUGE LA 34 99 X(99) X(99) X(99) X(99) X(99) X(99)
NEW IBERIA LA 34 99 X(99) X(99) X(99) X(99) X(99) X(99)
SHREVEPORT LA 34 18 1(19) X(19) X(19) X(19) X(19) X(19)
PORT ARTHUR TX 34 4 X( 4) X( 4) X( 4) X( 4) X( 4) X( 4)
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FORECASTER STEWART
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