WWJP83 RJTD 310000 VITAL WARNING FOR YOKOHAMA NAVTEX AREA 310000UTC ISSUED AT 310300UTC PRESSURE GRADIENT IS STEEP GALE WARNING EASTERN SEA OFF SANRIKU, WESTERN SEA OFF SANRIKU, NORTHERN SEA OFF KANTO, SOUTHERN SEA OFF KANTO, EASTERN SEA OFF TOKAI WITH MAX WINDS 35 KT WARNING(NEAR GALE) SOUTHERN SEA OFF TOKAI NXT WARNING WILL BE ISSUED BEFORE 310900UTC =