WWJP83 RJTD 171800 VITAL WARNING FOR YOKOHAMA NAVTEX AREA 171800UTC ISSUED AT 172100UTC DEVELOPING LOW 1010HPA AT 38N 148E MOV ENE 25 KT W-FRONT FM 38N 148E TO 37N 152E 36N 155E C-FRONT FM 38N 148E TO 36N 145E 34N 142E 32N 137E 30N 135E 28N 132E GALE WARNING WESTERN SEA OFF SANRIKU, NORTHERN SEA OFF KANTO WITH MAX WINDS 35 KT WARNING(NEAR GALE) EASTERN SEA OFF SANRIKU, SOUTHERN SEA OFF KANTO, EASTERN SEA OFF TOKAI, SOUTHERN SEA OFF TOKAI, NORTHERN SEA OFF SHIKOKU, SOUTHERN SEA OFF SHIKOKU NXT WARNING WILL BE ISSUED BEFORE 180300UTC =