WTPQ50 RJTD 221800 RSMC TROPICAL CYCLONE ADVISORY NAME STS 2404 PRAPIROON (2404) ANALYSIS PSTN 221800UTC 20.8N 107.6E FAIR MOVE NW 07KT PRES 985HPA MXWD 055KT GUST 080KT 50KT 30NM 30KT 150NM FORECAST 12HF 230600UTC 21.3N 107.4E 35NM 70% MOVE NNW SLOWLY PRES 990HPA MXWD 040KT GUST 060KT 24HF 231800UTC 21.4N 107.0E 57NM 70% TROPICAL DEPRESSION =