Subject: Pacific-NW: 1. Tropical Storm 15w (megi) Warning Nr 042

From: SIU Weather Processor <[email-masked]>
Date: Sat, 23 Oct 2010 02:30:06 -0500

WTPN31 PGTW 230900
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE WARNING//
RMKS/
1. TROPICAL STORM 15W (MEGI) WARNING NR 042
   DOWNGRADED FROM TYPHOON 15W
   03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC
   MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
   WIND RADII VALID OVER OPEN WATER ONLY
    ---
   WARNING POSITION:
   230600Z --- NEAR 24.2N 117.7E
     MOVEMENT PAST SIX HOURS - 340 DEGREES AT 08 KTS
     POSITION ACCURATE TO WITHIN 040 NM
     POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
     SATELLITE, RADAR, SYNOPTIC DATA AND EXTRAPOLATION
   PRESENT WIND DISTRIBUTION:
   MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   RADIUS OF 050 KT WINDS - 015 NM NORTHEAST QUADRANT
                            015 NM SOUTHEAST QUADRANT
                            015 NM SOUTHWEST QUADRANT
                            015 NM NORTHWEST QUADRANT
   RADIUS OF 034 KT WINDS - 075 NM NORTHEAST QUADRANT
                            060 NM SOUTHEAST QUADRANT
                            055 NM SOUTHWEST QUADRANT
                            065 NM NORTHWEST QUADRANT
   REPEAT POSIT: 24.2N 117.7E
    ---
   FORECASTS:
   12 HRS, VALID AT:
   231800Z --- 25.2N 117.6E
   MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
   VECTOR TO 24 HR POSIT: 010 DEG/ 05 KTS
    ---
   24 HRS, VALID AT:
   240600Z --- 26.2N 117.8E
   MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT
   WIND RADII VALID OVER OPEN WATER ONLY
   DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
    ---
REMARKS:
230900Z POSITION NEAR 24.5N 117.7E.
TROPICAL STORM (TS) 15W (MEGI), HAS TRACKED NORTH-NORTHWESTWARD AT 08
KTS AND MADE LANDFALL NEAR XIAMEN, CHINA. ANIMATED WATER VAPOR
IMAGERY SHOWS THE MAJORITY OF CONVECTION ASSOCIATED WITH THE SYSTEM
HAS DISSIPATED. THE CURRENT POSITION IS BASED ON RADAR ANIMATION FROM
TAIPEI, TAIWAN. THE CURRENT INTENSITY IS BASED ON A DVORAK ESTIMATE
OF 55 KNOTS FROM RJTD. TS MEGI IS EXPECTED TO RAPIDLY WEAKEN AS IT
DRAGS NORTH OVER SOUTHEAST CHINA'S RUGGED TERRAIN THEN DISSIPATE AS A
SIGNIFICANT TROPICAL CYCLONE OVER LAND BY TAU 24.
THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON
WARNING CENTER (NAVMARFCSTCEN).  THE SYSTEM WILL BE CLOSELY MONI-
TORED FOR SIGNS OF REGENERATION. REFER TO TROPICAL DEPRESSION 16W
(SIXTEEN) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES. REFER TO
TROPICAL DEPRESSION 17W (SEVENTEEN) WARNINGS (WTPN33 PGTW) FOR
SIX-HOURLY UPDATES.//

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