WWJP73 RJTD 251800 IMPORTANT WARNING FOR YOKOHAMA NAVTEX AREA 251800UTC ISSUED AT 252100UTC DEVELOPING LOW 1000HPA AT 44N 150E MOV NE 20 KT C-FRONT FM 44N 150E TO 40N 149E 36N 146E 34N 142E 30N 140E 28N 137E STNR FRONT FM 28N 137E TO 25N 132E 23N 128E 21N 124E WARNING(NEAR GALE) EASTERN SEA OFF SANRIKU, WESTERN SEA OFF SANRIKU, EASTERN SEA OFF TOKAI WARNING(DENSE FOG) EASTERN SEA OFF SANRIKU, WESTERN SEA OFF SANRIKU, NORTHERN SEA OFF KANTO, SOUTHERN SEA OFF KANTO POOR VIS 0.3 MILES OR LESS IN PLACES NXT WARNING WILL BE ISSUED BEFORE 260300UTC =