WWJP74 RJTD 051200 IMPORTANT WARNING FOR OTARU NAVTEX AREA 051200UTC ISSUED AT 051500UTC DEVELOPING LOW 992HPA AT 48N 154E MOV NNE 20 KT WARNING(NEAR GALE) SEA WEST OF HOKKAIDO, SEA OFF SOUTHERN COAST OF MARITIME PROVINCE WARNING(DENSE FOG) SEA WEST OF SAKHALIN, SOYA KAIKYO, SEA WEST OF HOKKAIDO, SEA OFF HIYAMA AND TSUGARU, SEA OFF SOUTHERN COAST OF MARITIME PROVINCE, SEA OFF AKITA, SEA OFF SADO, SEA OFF NOTO POOR VIS 0.3 MILES OR LESS IN PLACES NXT WARNING WILL BE ISSUED BEFORE 052100UTC =