WWJP83 RJTD 161200 VITAL WARNING FOR YOKOHAMA NAVTEX AREA 161200UTC ISSUED AT 161500UTC DEVELOPING LOW 1008HPA AT 46N 138E MOV ENE 25 KT FCST POSITION FOR 170000UTC AT 49N 144E WITH UNCERTANITY OF 50 MILES RADIUS FCST POSITION FOR 171200UTC AT 49N 146E WITH UNCERTANITY OF 80 MILES RADIUS GALE WARNING EASTERN SEA OFF SANRIKU, WESTERN SEA OFF SANRIKU WITH MAX WINDS 40 KT NORTHERN SEA OFF KANTO WITH 35 KT WARNING(NEAR GALE) SOUTHERN SEA OFF KANTO, EASTERN SEA OFF TOKAI, NORTHERN SEA OFF SHIKOKU NXT WARNING WILL BE ISSUED BEFORE 162100UTC =