Central Pacific Basin Tropical Cyclones

Tropical Storm Iona Forecast Advisory


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WTPA21 PHFO 280230
TCMCP1
 
TROPICAL STORM IONA FORECAST/ADVISORY NUMBER   4
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   CP012025
ISSUED BY NWS NATIONAL HURRICANE CENTER MIAMI FL
0300 UTC MON JUL 28 2025
 
TROPICAL STORM CENTER LOCATED NEAR 10.9N 148.3W AT 28/0300Z
POSITION ACCURATE WITHIN  30 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT   9 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB
MAX SUSTAINED WINDS  35 KT WITH GUSTS TO  45 KT.
34 KT....... 30NE   0SE   0SW  30NW.
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 10.9N 148.3W AT 28/0300Z
AT 28/0000Z CENTER WAS LOCATED NEAR 10.9N 147.8W
 
FORECAST VALID 28/1200Z 11.0N 149.7W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 50NE  20SE  20SW  50NW.
 
FORECAST VALID 29/0000Z 11.0N 151.7W
MAX WIND  55 KT...GUSTS  65 KT.
50 KT... 20NE   0SE   0SW  20NW.
34 KT... 70NE  40SE  30SW  70NW.
 
FORECAST VALID 29/1200Z 11.0N 153.8W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 25NE  15SE  10SW  25NW.
34 KT... 80NE  50SE  30SW  70NW.
 
FORECAST VALID 30/0000Z 11.1N 156.4W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 25NE  15SE  10SW  25NW.
34 KT... 80NE  50SE  30SW  70NW.
 
FORECAST VALID 30/1200Z 11.5N 159.4W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 20NE   0SE   0SW  15NW.
34 KT... 70NE  30SE  20SW  60NW.
 
FORECAST VALID 31/0000Z 12.1N 162.9W
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 50NE  20SE  20SW  50NW.
 
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 01/0000Z 13.0N 170.4W
MAX WIND  35 KT...GUSTS  45 KT.
34 KT... 50NE   0SE   0SW  40NW.
 
OUTLOOK VALID 02/0000Z 14.4N 177.4W...POST-TROP/REMNT LOW
MAX WIND  30 KT...GUSTS  40 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 10.9N 148.3W
 
NEXT ADVISORY AT 28/0900Z
 
$$
FORECASTER JELSEMA (CPHC)
  



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