WWJP83 RJTD 102100 VITAL WARNING FOR YOKOHAMA NAVTEX AREA 102100UTC ISSUED AT 110000UTC DEVELOPING LOW 998HPA AT 39N 149E MOV NNE 10 KT FCST POSITION FOR 112100UTC AT 40N 151E WITH UNCERTANITY OF 80 MILES RADIUS O-FRONT FM 39N 149E TO 38N 150E 37N 151E C-FRONT FM 37N 151E TO 34N 151E 32N 150E 30N 148E STORM WARNING EASTERN SEA OFF SANRIKU WITH MAX WINDS 50 KT GALE WARNING NORTHERN SEA OFF KANTO WITH 45 KT WESTERN SEA OFF SANRIKU, SOUTHERN SEA OFF KANTO WITH 35 KT WARNING(DENSE FOG) EASTERN SEA OFF SANRIKU POOR VIS 0.3 MILES OR LESS IN PLACES NXT WARNING WILL BE ISSUED BEFORE 110600UTC =