WWJP90 RJTD 281200 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 281200. WARNING VALID 291200. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. DEVELOPING LOW 970 HPA AT 49N 163E SEA EAST OF KURILS MOVING NNE 20 KNOTS. OCCLUDED FRONT FROM 49N 163E TO 47N 170E 45N 172E. WARM FRONT FROM 45N 172E TO 42N 176E 38N 178E. COLD FRONT FROM 45N 172E TO 41N 170E 37N 164E 30N 152E. STATIONARY FRONT FROM 30N 152E TO 27N 148E 25N 143E. WINDS 30 TO 50 KNOTS WITHIN 1100 MILES OF LOW SOUTHWEST SEMICIRCLE AND 700 MILES ELSEWHERE. EXPECTED WINDS 30 TO 55 KNOTS WITHIN 1100 MILES OF LOW SOUTHWEST SEMICIRCLE AND 700 MILES ELSEWHERE WITHIN NEXT 6 HOURS. FORECAST POSITION FOR 290000UTC AT 51N 164E WITH UNCERTAINTY OF 50 MILES RADIUS. FORECAST POSITION FOR 291200UTC AT 52N 174E WITH UNCERTAINTY OF 80 MILES RADIUS. ANOTHER LOW 972 HPA AT 47N 153E MOVING EAST 15 KNOTS. WARNING. DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 50N 160E 60N 175E 60N 180E 40N 180E 35N 175E 38N 165E 50N 160E. WARNING. LIGHT ICE ACCRETION OVER SEA OF OKHOTSK. SUMMARY. LOW 1000 HPA AT 59N 145E EAST SLOWLY. HIGH 1026 HPA AT 36N 126E EAST 15 KT. HIGH 1026 HPA AT 38N 137E EAST 25 KT. REMARKS. TYPHOON 2631 IN-FA (2631) 945 HPA AT 15.4N 157.6E : SEE TROPICAL CYCLONE WARNING. 24 HOUR FORECAST. SEA OF OKHOTSK WIND NW 50KT SEAS 6 M. JAPAN SEA WIND SW 30KT SEAS 4 M. BOHAI AND YELLOW SEA WIND SW 30KT SEAS 2 M. EAST CHINA SEA WIND SW 20KT SEAS 3 M. SOUTH CHINA SEA AND GULF OF TONGKING WIND NE 30KT SEAS 3 M. SEA AROUND KURILS WIND NW 55KT SEAS 7 M WITH MODERATE SWELL. SEA EAST OF KURILS WIND W 55KT SEAS 10 M WITH HEAVY SWELL. SEA EAST OF JAPAN WIND W 50KT SEAS 8 M WITH HEAVY SWELL. FAR OFF EAST OF JAPAN WIND W 55KT SEAS 9 M WITH HEAVY SWELL. SEA SOUTH OF JAPAN WIND NW 30KT SEAS 3 M. SEA SOUTH OF OKINAWA WIND NE 30KT SEAS 3 M. CHICHIJIMA WIND E 30KT SEAS 4 M. MINAMITORISHIMA WIND NE 100KT SEAS 11 M WITH HEAVY SWELL. SEA EAST OF PHILIPPINES WIND E 30KT SEAS 3 M. SEA EAST OF MINDANAO AND CELEBES SEA AND SULU SEA WIND NE 20KT SEAS 1 M. MARIANAS WIND N 45KT SEAS 7 M WITH HEAVY SWELL. TRUK AND CAROLINES WIND SW 40KT SEAS 6 M. WAKE WIND NE 30KT SEAS 6 M. MARSHALLS WIND SW 70KT SEAS 8 M WITH HEAVY SWELL. MIDWAY WIND N 20KT SEAS 3 M. SEA SOUTH OF ALEUTIANS WIND SW 55KT SEAS 10 M WITH HEAVY SWELL. BERING SEA AND SEA AROUND ALEUTIANS AND SEA EAST OF KAMCHATKA WIND SW 55KT SEAS 10 M WITH HEAVY SWELL. HONG KONG METEOROLOGICAL SERVICE PROVIDES THE FOLLOWING WARNING/INFORMATION FOR THE SOUTH CHINA SEA. WARNINGS GALES OVER LUZON STRAIT. SYNOPSIS (281200UTC) AND 24-HOUR FORECAST THE NORTHEAST MONSOON IS BRINGING GALES TO THE WARNING AREA AT FIRST. SIGNIFICANT SWELL/HIGH SEAS SEAS 6 M OVER GALES. SWELL E TO NE 3 M OVER THE WARNING AREA, TAIWAN STRAIT AND NORTHERN PART OF THE SOUTH CHINA SEA (SCS). THUNDERSTORMS/SEVERE WEATHER OCCASIONAL SQUALLY (SQ) SHOWERS (SH) AND THUNDERSTORMS (TS) OVER GULF OF THAILAND. SCATTERED SQ SH AND TS OVER SOUTHERN PART OF THE SCS AND SEAS NEAR MALAYSIA. ISOLATED SQ SH AND TS OVER SEAS NEAR HAINAN, CENTRAL PART OF THE SCS AND SEAS NEAR THE PHILIPPINES. SEA FOG/REDUCED VISIBILITY VISIBILITY DOWN TO 1000 M IN SQ SH AND TS. JAPAN METEOROLOGICAL AGENCY.=