FANDOM


  Typhoon 20W (Megi) Advisory 4
  Bittersweet Meteorological Center (BMC)/WPTC Products
  01 Active TCs over the Western Pacific
  Maximum sustained winds based on 1-min average
  Wind radii valid over open water only
     
  Warning Position 
  1200Z - 18.9N, 130.4E
     MOVEMENT PAST SIX HOURS - 320 DEGREES AT 20 KTS
     POSITION ACCURATE TO WITHIN 020 NM
     POSITION BASED ON CENTER LOCATED BY EYE
     MAX SUSTAINED WINDS - 100 KT, GUSTS 115 KT
     WIND RADII VALID OVER OPEN WATER ONLY
  RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
                           055 NM SOUTHEAST QUADRANT
                           040 NM SOUTHWEST QUADRANT
                           050 NM NORTHWEST QUADRANT
  RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT
                           055 NM SOUTHEAST QUADRANT
                           040 NM SOUTHWEST QUADRANT
                           050 NM NORTHWEST QUADRANT
  RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
                           165 NM SOUTHEAST QUADRANT
                           085 NM SOUTHWEST QUADRANT
                           195 NM NORTHWEST QUADRANT
  FORECASTS:
  12 HRS, VALID AT:
  231800Z --- 18.3N 136.3E
  MAX SUSTAINED WINDS - 095 KT, GUSTS 105 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
                           055 NM SOUTHEAST QUADRANT
                           040 NM SOUTHWEST QUADRANT
                           050 NM NORTHWEST QUADRANT
  RADIUS OF 050 KT WINDS - 115 NM NORTHEAST QUADRANT
                           095 NM SOUTHEAST QUADRANT
                           045 NM SOUTHWEST QUADRANT
                           125 NM NORTHWEST QUADRANT
  RADIUS OF 034 KT WINDS - 190 NM NORTHEAST QUADRANT
                           115 NM SOUTHEAST QUADRANT
                           065 NM SOUTHWEST QUADRANT
                           155 NM NORTHWEST QUADRANT
  VECTOR TO 24 HR POSIT: 295 DEG/ 10 KTS
   ---
  24 HRS, VALID AT:
  240600Z --- 19.1N 134.3E
  MAX SUSTAINED WINDS - 85 KT, GUSTS 095 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  RADIUS OF 064 KT WINDS - 065 NM NORTHEAST QUADRANT
                           055 NM SOUTHEAST QUADRANT
                           040 NM SOUTHWEST QUADRANT
                           050 NM NORTHWEST QUADRANT
  RADIUS OF 050 KT WINDS - 065 NM NORTHEAST QUADRANT
                           055 NM SOUTHEAST QUADRANT
                           040 NM SOUTHWEST QUADRANT
                           050 NM NORTHWEST QUADRANT
  RADIUS OF 034 KT WINDS - 215 NM NORTHEAST QUADRANT
                           165 NM SOUTHEAST QUADRANT
                           085 NM SOUTHWEST QUADRANT
                           195 NM NORTHWEST QUADRANT
  VECTOR TO 36 HR POSIT: 290 DEG/ 12 KTS
   ---
  36 HRS, VALID AT:
  241800Z --- 19.9N 132.0E
  MAX SUSTAINED WINDS - 70 KT, GUSTS 085 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  RADIUS OF 064 KT WINDS - 025 NM NORTHEAST QUADRANT
                           025 NM SOUTHEAST QUADRANT
                           025 NM SOUTHWEST QUADRANT
                           025 NM NORTHWEST QUADRANT
  RADIUS OF 050 KT WINDS - 075 NM NORTHEAST QUADRANT
                           045 NM SOUTHEAST QUADRANT
                           030 NM SOUTHWEST QUADRANT
                           060 NM NORTHWEST QUADRANT
  RADIUS OF 034 KT WINDS - 240 NM NORTHEAST QUADRANT
                           185 NM SOUTHEAST QUADRANT
                           125 NM SOUTHWEST QUADRANT
                           205 NM NORTHWEST QUADRANT
  VECTOR TO 48 HR POSIT: 290 DEG/ 13 KTS
   ---
  EXTENDED OUTLOOK:
  48 HRS, VALID AT:
  250600Z --- 20.8N 129.3E
  MAX SUSTAINED WINDS - 55 KT, GUSTS 70 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  RADIUS OF 050 KT WINDS - 095 NM NORTHEAST QUADRANT
                           075 NM SOUTHEAST QUADRANT
                           060 NM SOUTHWEST QUADRANT
                           075 NM NORTHWEST QUADRANT
  RADIUS OF 034 KT WINDS - 250 NM NORTHEAST QUADRANT
                           175 NM SOUTHEAST QUADRANT
                           150 NM SOUTHWEST QUADRANT
                           210 NM NORTHWEST QUADRANT
  VECTOR TO 72 HR POSIT: 290 DEG/ 12 KTS
   ---
  72 HRS, VALID AT:
  260600Z --- 22.3N 124.6E
  MAX SUSTAINED WINDS - 30 KT, GUSTS 75 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  VECTOR TO 96 HR POSIT: 285 DEG/ 11 KTS
  DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   ---
  LONG RANGE OUTLOOK:

  96 HRS, VALID AT:
  270600Z --- 23.4N 120.2E
  MAX SUSTAINED WINDS - 030 KT, GUSTS 40 KT
  WIND RADII VALID OVER OPEN WATER ONLY
  DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
  VECTOR TO 120 HR POSIT: 285 DEG/ 09 KTS
   ---
  WATCHES AND WARNINGS - 
  A Typhoon Warning is in effect for Taiwan.
  A Tropical Storm Warning is in effect for the coast of China on the Taiwan Strait. 
  Other interests in China should monitor the progress of Megi.
   ---
 REMARKS -  
 TYPHOON 20W (MEGI), located approximately 300 miles SW of Kadena AB, Okinawa,
 has tracked northwest at 20 kt over the past 6 hours. Maximum significant wave    
 height is 21 feet. 12-hourly advisories will be issued until dissipation.
 NNNN

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