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Tropical Storm ISIS


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TROPICAL STORM ISIS FORECAST/ADVISORY NUMBER  18
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP122004
1500Z SUN SEP 12 2004
 
TROPICAL STORM CENTER LOCATED NEAR 17.4N 123.8W AT 12/1500Z
POSITION ACCURATE WITHIN  50 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT   9 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 60NE  60SE  60SW  60NW.
12 FT SEAS.. 60NE  60SE  60SW  60NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 17.4N 123.8W AT 12/1500Z
AT 12/1200Z CENTER WAS LOCATED NEAR 17.4N 123.3W
 
FORECAST VALID 13/0000Z 17.4N 125.1W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE  20SE  20SW  20NW.
34 KT... 70NE  70SE  70SW  70NW.
 
FORECAST VALID 13/1200Z 17.4N 127.0W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE  20SE  20SW  20NW.
34 KT... 70NE  70SE  70SW  70NW.
 
FORECAST VALID 14/0000Z 17.4N 129.0W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE  20SE  20SW  20NW.
34 KT... 70NE  70SE  70SW  70NW.
 
FORECAST VALID 14/1200Z 17.4N 131.0W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 20NE  20SE  20SW  20NW.
34 KT... 70NE  70SE  70SW  70NW.
 
FORECAST VALID 15/1200Z 17.4N 133.0W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 20NE  20SE  20SW  20NW.
34 KT... 70NE  70SE  70SW  70NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 200 NM
ON DAY 4 AND 250 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
 
OUTLOOK VALID 16/1200Z 17.4N 134.0W
MAX WIND  55 KT...GUSTS  65 KT.
 
OUTLOOK VALID 17/1200Z 17.4N 134.5W
MAX WIND  55 KT...GUSTS  65 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.4N 123.8W
 
NEXT ADVISORY AT 12/2100Z
 
FORECASTER ROBERTS/BEVEN
 
 
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