WTTH20 VTBB 230600 TROPICAL STORM ADVISORY NAME STS FENGSHEN (0806) PSTN 230600 UTC 17.6 N 117.4 E MOVE NW 10 KTS PRES 985 HPA MAXD 50 KT FORECAST 24 HR 240600 UTC 20.2 N 116.3 E MOVE NW 08 KTS PRES 985 HPA MAXD 50 KT 48 HR 250600 UTC 22.5 N 117.5 E MOVE NE 10 KTS PRES 990 HPA MAXD 45 KT 72 HR 260600 UTC 24.5 N 120.8 E MOVE NE 12 KTS PRES 990 HPA MAXD 40 KT ?