449
WTPA21 PHFO 010833
TCMCP1
TROPICAL STORM IONA FORECAST/ADVISORY NUMBER 21
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012025
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
0900 UTC FRI AUG 01 2025
TROPICAL STORM CENTER LOCATED NEAR 14.2N 174.4W AT 01/0900Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 16 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT....... 50NE 0SE 0SW 40NW.
4 M SEAS....220NE 110SE 70SW 140NW.
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 14.2N 174.4W AT 01/0900Z
AT 01/0600Z CENTER WAS LOCATED NEAR 14.0N 173.6W
FORECAST VALID 01/1800Z 14.8N 176.7W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 02/0600Z 15.8N 179.6W
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 02/1800Z 17.0N 177.9E
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 03/0600Z 18.1N 175.7E
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 03/1800Z 19.5N 173.6E
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 0SE 0SW 20NW.
FORECAST VALID 04/0600Z 21.3N 171.4E
MAX WIND 30 KT...GUSTS 40 KT.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY
OUTLOOK VALID 05/0600Z...DISSIPATED
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.2N 174.4W
NEXT ADVISORY AT 01/1500Z
FORECASTER GIBBS (CPHC)
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