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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