WTPH23 RPMM 041800 TTT WARNING 01 TD TIME 1800 UTC 00 21.8N 119.8E 1002HPA 25KT P06HR NE 10KT P+12 22.5N 121.1E P+24 24.7N 122.5E P+36 27.0N 124.4E P+48 29.5N 127.0E PAGASA=