Tropical Storm ISIS
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TROPICAL STORM ISIS FORECAST/ADVISORY NUMBER 21
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP122004
0900Z MON SEP 13 2004
TROPICAL STORM CENTER LOCATED NEAR 17.4N 126.2W AT 13/0900Z
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....... 0NE 40SE 40SW 40NW.
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 126.2W AT 13/0900Z
AT 13/0600Z CENTER WAS LOCATED NEAR 17.4N 125.7W
FORECAST VALID 13/1800Z 17.4N 127.5W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 0NE 40SE 40SW 40NW.
FORECAST VALID 14/0600Z 17.4N 129.3W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 0NE 20SE 20SW 20NW.
34 KT... 0NE 50SE 50SW 50NW.
FORECAST VALID 14/1800Z 17.5N 130.4W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 0NE 20SE 20SW 20NW.
34 KT... 0NE 50SE 50SW 50NW.
FORECAST VALID 15/0600Z 17.6N 131.2W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 20NE 20SE 20SW 20NW.
34 KT... 50NE 50SE 50SW 50NW.
FORECAST VALID 16/0600Z 17.7N 131.6W
MAX WIND 50 KT...GUSTS 60 KT.
50 KT... 20NE 20SE 20SW 20NW.
34 KT... 50NE 50SE 50SW 50NW.
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 17/0600Z 17.8N 131.9W
MAX WIND 50 KT...GUSTS 60 KT.
OUTLOOK VALID 18/0600Z 18.0N 132.2W
MAX WIND 50 KT...GUSTS 60 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.4N 126.2W
NEXT ADVISORY AT 13/1500Z
FORECASTER JARVINEN
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