WTPN31 PHNC 311000 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/TROPICAL STORM 01C (IONA) WARNING NR 017// RMKS/ 1. TROPICAL STORM 01C (IONA) WARNING NR 017 02 ACTIVE TROPICAL CYCLONES IN CENTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 310600Z --- NEAR 12.1N 165.9W MOVEMENT PAST SIX HOURS - 280 DEGREES AT 21 KTS POSITION ACCURATE TO WITHIN 030 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 050 NM NORTHEAST QUADRANT 030 NM SOUTHEAST QUADRANT 030 NM SOUTHWEST QUADRANT 050 NM NORTHWEST QUADRANT REPEAT POSIT: 12.1N 165.9W --- FORECASTS: 12 HRS, VALID AT: 311800Z --- 12.7N 169.8W MAX SUSTAINED WINDS - 040 KT, GUSTS 050 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 020 NM SOUTHWEST QUADRANT 040 NM NORTHWEST QUADRANT VECTOR TO 24 HR POSIT: 285 DEG/ 18 KTS --- 24 HRS, VALID AT: 010600Z --- 13.5N 173.3W MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 36 HR POSIT: 280 DEG/ 17 KTS --- 36 HRS, VALID AT: 011800Z --- 14.1N 176.7W MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 030 NM NORTHWEST QUADRANT VECTOR TO 48 HR POSIT: 285 DEG/ 15 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 020600Z --- 14.9N 179.6W MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 040 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 60 HR POSIT: 290 DEG/ 13 KTS --- 60 HRS, VALID AT: 021800Z --- 15.8N 177.9E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 72 HR POSIT: 290 DEG/ 11 KTS --- 72 HRS, VALID AT: 030600Z --- 16.6N 175.7E MAX SUSTAINED WINDS - 035 KT, GUSTS 045 KT WIND RADII VALID OVER OPEN WATER ONLY RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT 020 NM SOUTHEAST QUADRANT 010 NM SOUTHWEST QUADRANT 020 NM NORTHWEST QUADRANT VECTOR TO 96 HR POSIT: 295 DEG/ 11 KTS --- LONG RANGE OUTLOOK: --- 96 HRS, VALID AT: 040600Z --- 18.4N 171.3E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY VECTOR TO 120 HR POSIT: 300 DEG/ 11 KTS --- 120 HRS, VALID AT: 050600Z --- 20.5N 167.1E MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT WIND RADII VALID OVER OPEN WATER ONLY --- REMARKS: 311000Z POSITION NEAR 12.3N 167.2W. 31JUL25. TROPICAL STORM 01C (IONA), LOCATED APPROXIMATELY 346 NM SOUTHEAST OF JOHNSTON ISLAND, HAS TRACKED WESTWARD AT 21 KNOTS OVER THE PAST SIX HOURS. MINIMUM CENTRAL PRESSURE AT 310600Z IS 1001 MB. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 310600Z IS 16 FEET. NEXT WARNINGS AT 311600Z, 312200Z, 010400Z AND 011000Z. REFER TO TROPICAL DEPRESSION 02C (KELI) FINAL WARNING (WTPN32 PHNC) // NNNN