WWJP73 RJTD 221200 IMPORTANT WARNING FOR YOKOHAMA NAVTEX AREA 221200UTC ISSUED AT 221500UTC STNR FRONT FM 32N 116E TO 34N 119E 36N 121E 37N 124E 38N 127E 39N 132E 39N 136E 40N 140E 39N 144E 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 222100UTC =