WWJP27 RJTD 181800 WARNING AND SUMMARY 181800. WARNING VALID 191800. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. DEVELOPING LOW 986 HPA AT 35N 145E SEA EAST OF JAPAN MOVING NE 25 KNOTS. WARM FRONT FROM 34N 145E TO 36N 148E 37N 152E. COLD FRONT FROM 34N 145E TO 28N 143E 23N 137E. WINDS 30 TO 45 KNOTS WITHIN 700 MILES OF LOW SOUTH SEMICIRCLE AND 400 MILES ELSEWHERE. EXPECTED WINDS 30 TO 50 KNOTS WITHIN 900 MILES OF LOW SOUTHEAST SEMICIRCLE AND 400 MILES ELSEWHERE WITHIN NEXT 6 HOURS. FORECAST POSITION FOR 190600UTC AT 37N 148E WITH UNCERTAINTY OF 50 MILES RADIUS. FORECAST POSITION FOR 191800UTC AT 40N 150E WITH UNCERTAINTY OF 85 MILES RADIUS. WARNING. DENSE FOG OBSERVED LOCALLY OVER SEA OF OKHOTSK SEA OF JAPAN BOHAI YELLOW SEA EAST CHINA SEA NORTHERN PART OF SOUTH CHINA SEA. WARNING. DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 42N 141E 47N 152E 55N 162E 60N 163E 59N 180E 31N 180E 27N 164E 40N 169E 32N 150E 31N 142E 37N 144E 42N 141E. SUMMARY. LOW 1004 HPA AT 45N 156E NW 10 KT. LOW 1018 HPA AT 35N 172E NE 10 KT. LOW 1020 HPA AT 58N 174E ESE 15 KT. HIGH 1014 HPA AT 32N 124E EAST 10 KT. HIGH 1020 HPA AT 32N 165E ENE 25 KT. JAPAN METEOROLOGICAL AGENCY.=