WWJP90 RJTD 091800 EGC:2:1:31:11:01:00 SECURITE. THIS WARNING IS ISSUED FOR NORTH OF THE EQUATOR AND EAST OF 100E IN METAREA XI BY JMA. WARNING AND SUMMARY 091800. WARNING VALID 101800. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. DEVELOPING LOW 984 HPA AT 44N 168E FAR OFF EAST OF JAPAN MOVING EAST 20 KNOTS. WINDS 30 TO 50 KNOTS WITHIN 900 MILES OF LOW SOUTHEAST SEMICIRCLE AND 300 MILES ELSEWHERE. EXPECTED WINDS 30 TO 55 KNOTS WITHIN 700 MILES OF LOW WITHIN NEXT 6 HOURS. FORECAST POSITION FOR 100600UTC AT 42N 173E WITH UNCERTAINTY OF 50 MILES RADIUS. FORECAST POSITION FOR 101800UTC AT 41N 176W WITH UNCERTAINTY OF 80 MILES RADIUS. ANOTHER LOW 986 HPA AT 42N 173E MOVING EAST 25 KNOTS. STORM WARNING. DEVELOPING LOW 1004 HPA AT 41N 125E KOREA MOVING EAST 40 KNOTS. WARM FRONT FROM 41N 125E TO 40N 129E 38N 132E. COLD FRONT FROM 41N 125E TO 37N 123E 34N 117E 33N 111E. WINDS 30 TO 35 KNOTS WITHIN 600 MILES OF LOW SOUTH SEMICIRCLE AND 400 MILES ELSEWHERE. EXPECTED WINDS 30 TO 50 KNOTS WITHIN 1100 MILES OF LOW SOUTHWEST SEMICIRCLE AND 700 MILES ELSEWHERE WITHIN NEXT 24 HOURS. FORECAST POSITION FOR 100600UTC AT 42N 134E WITH UNCERTAINTY OF 65 MILES RADIUS. FORECAST POSITION FOR 101800UTC AT 45N 138E WITH UNCERTAINTY OF 80 MILES RADIUS. GALE WARNING. DEVELOPED LOW 984 HPA AT 50N 154E SEA AROUND KURILS MOVING NNW 15 KNOTS. WINDS 30 TO 45 KNOTS WITHIN 300 MILES OF LOW SOUTH SEMICIRCLE AND 200 MILES ELSEWHERE. EXPECTED WINDS 30 TO 45 KNOTS WITHIN 300 MILES OF LOW SOUTH SEMICIRCLE AND 200 MILES ELSEWHERE FOR NEXT 24 HOURS. GALE WARNING. DEVELOPED LOW 994 HPA AT 57N 143E SEA OF OKHOTSK MOVING NORTH 10 KNOTS. WINDS 30 TO 35 KNOTS WITHIN 200 MILES OF LOW. EXPECTED WINDS 30 TO 35 KNOTS WITHIN 200 MILES OF LOW FOR NEXT 6 HOURS. WARNING. DENSE FOG OBSERVED LOCALLY OVER SEA OF OKHOTSK NORTHERN PART OF SEA OF JAPAN MIDDLE OF SEA OF JAPAN. WARNING. DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 41N 143E 42N 143E 44N 147E 46N 151E 42N 152E 41N 150E 41N 143E. WARNING. DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 48N 160E 49N 170E 46N 180E 29N 180E 26N 170E 40N 164E 48N 160E. SUMMARY. HIGH 1022 HPA AT 33N 148E ESE 20 KT. COLD FRONT FROM 33N 180E TO 32N 177E 30N 172E 27N 167E 25N 163E 22N 158E. HONG KONG METEOROLOGICAL SERVICE PROVIDES THE FOLLOWING WARNING/INFORMATION FOR THE SOUTH CHINA SEA. WARNINGS GALE FORCE WINDS OVER SEAS NEAR SOUTHERN PART OF VIETNAM. SYNOPSIS (091800UTC) AND 24-HOUR FORECAST THE NORTHEAST MONSOON IS BRINGING GALE FORCE WINDS TO THE WARNING AREA. SIGNIFICANT SWELL/HIGH SEAS SEAS 6 M OVER GALES. SWELL N TO NE 3 M OVER SEAS NEAR LUZON AND SOUTHERN PART OF THE SOUTH CHINA SEA (SCS). THUNDERSTORMS/SEVERE WEATHER SCATTERED SQUALLY (SQ) SHOWERS (SH) AND THUNDERSTORMS (TS) OVER SEAS NEAR SOUTHERN PART OF THE PHILIPPINES, SOUTHERN PART OF THE SCS AND SEAS NEAR MALAYSIA. ISOLATED SQ SH AND TS OVER SEAS EAST OF LUZON. SEA FOG/REDUCED VISIBILITY VISIBILITY DOWN TO 2000 M IN SQ SH AND TS. JAPAN METEOROLOGICAL AGENCY.=