877
WTPA21 PHFO 010233
TCMCP1
TROPICAL STORM IONA FORECAST/ADVISORY NUMBER 20
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI CP012025
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
0300 UTC FRI AUG 01 2025
TROPICAL STORM CENTER LOCATED NEAR 13.7N 172.7W AT 01/0300Z
POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 20 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 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 13.7N 172.7W AT 01/0300Z
AT 01/0000Z CENTER WAS LOCATED NEAR 13.5N 171.7W
FORECAST VALID 01/1200Z 14.3N 175.0W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 02/0000Z 15.1N 177.9W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 02/1200Z 16.1N 179.4E
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 03/0000Z 17.2N 177.2E
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 50NE 0SE 0SW 40NW.
FORECAST VALID 03/1200Z 18.4N 175.1E
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 40NE 0SE 0SW 30NW.
FORECAST VALID 04/0000Z 19.6N 172.9E
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 0SE 0SW 30NW.
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 05/0000Z 22.8N 168.7E
MAX WIND 30 KT...GUSTS 40 KT.
OUTLOOK VALID 06/0000Z 27.6N 165.5E...POST-TROP/REMNT LOW
MAX WIND 30 KT...GUSTS 40 KT.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.7N 172.7W
NEXT ADVISORY AT 01/0900Z
FORECASTER GIBBS (CPHC)
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