Tropical Storm MEKKHALA Advisory Tue Aug 11

MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/TYPHOON 07W (MEKKHALA) WARNING NR 007//
RMKS/
1. TYPHOON 07W (MEKKHALA) WARNING NR 007
   UPGRADED FROM TROPICAL DEPRESSION 07W
   03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   110000Z --- NEAR 24.1N 117.7E
     MOVEMENT PAST SIX HOURS - 330 DEGREES AT 13 KTS
     POSITION ACCURATE TO WITHIN 020 NM
     POSITION BASED ON EYE FIXED BY A COMBINATION OF
     SATELLITE AND RADAR
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 070 KT, GUSTS 085 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   RADIUS OF 064 KT WINDS - 010 NM NORTHEAST QUADRANT
                            010 NM SOUTHEAST QUADRANT
                            000 NM SOUTHWEST QUADRANT
                            000 NM NORTHWEST QUADRANT
   RADIUS OF 050 KT WINDS - 035 NM NORTHEAST QUADRANT
                            035 NM SOUTHEAST QUADRANT
                            025 NM SOUTHWEST QUADRANT
                            020 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 080 NM NORTHEAST QUADRANT
                            080 NM SOUTHEAST QUADRANT
                            060 NM SOUTHWEST QUADRANT
                            055 NM NORTHWEST QUADRANT
   REPEAT POSIT: 24.1N 117.7E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   111200Z --- 26.7N 117.3E
   MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 24 HR POSIT: 005 DEG/ 14 KTS
    ---
   24 HRS, VALID AT:
   120000Z --- 29.4N 117.5E
   MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 36 HR POSIT: 015 DEG/ 19 KTS
    ---
   36 HRS, VALID AT:
   121200Z --- 33.1N 118.5E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
110300Z POSITION NEAR 24.8N 117.6E.
11AUG20. TYPHOON 07W (MEKKHALA), LOCATED APPROXIMATELY 216 NM
WEST-SOUTHWEST OF TAIPEI, TAIWAN, HAS TRACKED NORTH-NORTHWESTWARD
AT 13 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE
IMAGERY SHOWS THAT TYPHOON MEKKHALA IS QUICKLY BECOMING SHEARED, WITH
THE OUTER LOW LEVEL BANDS ON THE NORTH SIDE OF THE SYSTEM NOW
EXPOSED, BUT WITH DEEP CONVECTION REMAINING IN PLACE OVER AND SOUTH
OF THE ASSESSED CENTER. THE INITIAL POSITION IS PLACED WITH HIGH
CONFIDENCE BASED ON COMPOSITE CHINESE RADAR DATA. A REASSESSMENT OF
EARLIER INTENSITY ESTIMATES HAS LED TO AN INCREASE IN THE INITIAL
INTENSITY AT THE 101800Z POSITION TO 65 KNOTS BASED ON AMSR2
WINDSPEED ESTIMATE OF 64 KNOTS AT 1743Z. A SUBSEQUENT 102100Z
INTERMEDIATE POSITION INTENSITY HAS ALSO BEEN INCREASED TO 70 KNOTS
BASED ON A REPORT OF A CHINESE BUOY WHICH REPORTED A 10-MIN AVERAGE
WIND OF 63 KNOTS, WHICH EQUATES TO A 69 KNOTS 1-MIN AVERAGE. TYPHOON
07W MADE LANDFALL ALONG THE CHINESE COAST AROUND 2200Z AND IS NOW
MOVING FURTHER INLAND. THE SYSTEM IS FORECAST TO CONTINUE TRACKING
NORTHWARD WHILE WEAKENING, FULLY DISSIPATING OVERLAND BY TAU 36.
DYNAMIC MODEL GUIDANCE IS IN TIGHT AGREEMENT, LENDING HIGH CONFIDENCE
TO THE JTWC TRACK. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE
JOINT TYPHOON WRNCEN PEARL HARBOR HI. THE SYSTEM WILL BE CLOSELY
MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT
AT 110000Z IS 15 FEET. REFER TO TROPICAL CYCLONE 05W (JANGMI)
WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES. REFER TO TROPICAL
DEPRESSION 06W (SIX) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.//
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