SUBJ: TROPICAL CYCLONE WARNING WTPN31 PGTW 041500 1. TYPHOON 22W (SAOMAI) WARNING NR 009 01 ACTIVE TROPICAL CYCLONE IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE --- WARNING POSITION: 041200Z7 --- NEAR 16.2N9 149.8E2 MOVEMENT PAST SIX HOURS - 275 DEGREES AT 09 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY SATELLITE PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 080 KT, GUSTS 100 KT RADIUS OF 050 KT WINDS - 015 NM RADIUS OF 035 KT WINDS - 045 NM SOUTHWEST QUADRANT 040 NM ELSEWHERE REPEAT POSIT: 16.2N9 149.8E2 --- FORECASTS: 12 HRS, VALID AT: 050000Z5 --- 16.5N2 147.9E1 MAX SUSTAINED WINDS - 090 KT, GUSTS 110 KT RADIUS OF 050 KT WINDS - 020 NM RADIUS OF 035 KT WINDS - 050 NM NORTH SEMICIRCLE 045 NM ELSEWHERE VECTOR TO 24 HR POSIT: 290 DEG/ 10 KTS --- 24 HRS, VALID AT: 051200Z8 --- 17.2N0 145.9E9 MAX SUSTAINED WINDS - 105 KT, GUSTS 130 KT RADIUS OF 100 KT WINDS - 015 NM RADIUS OF 050 KT WINDS - 030 NM NORTH SEMICIRCLE OVER WATER 020 NM ELSEWHERE OVER WATER RADIUS OF 035 KT WINDS - 060 NM NORTH SEMICIRCLE OVER WATER 050 NM ELSEWHERE VECTOR TO 36 HR POSIT: 300 DEG/ 11 KTS --- 36 HRS, VALID AT: 060000Z6 --- 18.3N2 143.8E6 MAX SUSTAINED WINDS - 110 KT, GUSTS 135 KT RADIUS OF 100 KT WINDS - 015 NM RADIUS OF 050 KT WINDS - 040 NM NORTHEAST SEMICIRCLE 030 NM ELSEWHERE RADIUS OF 035 KT WINDS - 070 NM NORTHEAST SEMICIRCLE 060 NM ELSEWHERE VECTOR TO 48 HR POSIT: 300 DEG/ 11 KTS --- EXTENDED OUTLOOK: 48 HRS, VALID AT: 061200Z9 --- 19.4N4 141.7E3 MAX SUSTAINED WINDS - 115 KT, GUSTS 140 KT RADIUS OF 100 KT WINDS - 015 NM RADIUS OF 050 KT WINDS - 045 NM NORTHEAST SEMICIRCLE 035 NM ELSEWHERE RADIUS OF 035 KT WINDS - 075 NM NORTHEAST SEMICIRCLE 065 NM ELSEWHERE VECTOR TO 72 HR POSIT: 300 DEG/ 12 KTS --- 72 HRS, VALID AT: 071200Z0 --- 21.5N8 137.3E4 MAX SUSTAINED WINDS - 120 KT, GUSTS 145 KT RADIUS OF 100 KT WINDS - 020 NM RADIUS OF 050 KT WINDS - 050 NM NORTHEAST SEMICIRCLE 040 NM ELSEWHERE RADIUS OF 035 KT WINDS - 080 NM NORTHEAST SEMICIRCLE 070 NM ELSEWHERE --- REMARKS: 041500Z0 POSITION NEAR 16.3N0 149.3E7. TYPHOON (TY) 22W (SAOMAI), LOCATED ABOUT 242 NM EAST-NORTHEAST OF SAIPAN, MARIANA ISLANDS, HAS TRACKED WESTWARD AT 08 KNOTS OVER THE PAST 6 HOURS. THE WARNING POSITION IS BASED ON 041130Z9 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 75 AND 90 KNOTS. A 041051Z1 SPECIAL SENSOR MICROWAVE IMAGER (SSM/I) PASS DEPICTED AN INCREASE IN DEEP CONVECTION OVER THE LOW-LEVEL CIRCULATION CENTER (LLCC). ENHANCED INFRARED IMAGERY REVEALS SLIGHT WARMING OF THE CLOUD TOPS OVER THE LLCC AS WELL. HENCE, THE SLIGHT INTENSITY ADJUSTMENT FROM THE PREVIOUS FORECAST. TY 22W SHOULD TURN INCREASINGLY WEST- NORTHWESTWARD NEAR MID PERIOD. TS 22W IS FORECAST TO INTENSIFY AT A CLIMATOLOGICAL RATE DURING THE FORECAST PERIOD. THE WIND RADII HAVE BEEN ADJUSTED USING MICROWAVE IMAGERY. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 041200Z7 IS 16 FEET. REFER TO WWPW30 RJTX FOR ADDITIONAL SEA HEIGHT INFORMATION. NEXT WARNINGS AT 042100Z7 (DTG 041951Z0), 050300Z8 (DTG 050151Z2), 050900Z4 (DTG 050751Z8) AND 051500Z1 (DTG 051351Z5).// NNNN