WWHK82 VHHH 171800 40:1:31:11:01:00 HONG KONG METEOROLOGICAL SERVICE PROVIDES THE FOLLOWING WARNING/INFORMATION FOR THE SOUTH CHINA SEA. WARNINGS GALE FORCE WINDS OVER LUZON STRAIT AND SEAS NEAR SOUTHERN PART OF VIETNAM. SYNOPSIS (171800UTC) AND 24-HOUR FORECAST THE NORTHEAST MONSOON IS BRINGING GALE FORCE WINDS TO THE WARNING AREAS. SIGNIFICANT SWELL/HIGH SEAS SEAS 6 M OVER GALES. SWELL E TO NE 3 M OVER LUZON STRAIT, SEAS NEAR THE PHILIPPINES AND SOUTHERN PART OF THE SOUTH CHINA SEA. THUNDERSTORMS/SEVERE WEATHER ISOLATED SQUALLY (SQ) SHOWERS (SH) AND THUNDERSTORMS (TS) OVER SEAS SOUTH OF THE PHILIPPINES AND SEAS NEAR MALAYSIA. SEA FOG/REDUCED VISIBILITY VISIBILITY DOWN TO 2000 M IN SQ SH AND TS.