WWJP83 RJTD 281200 VITAL WARNING FOR YOKOHAMA NAVTEX AREA 281200UTC ISSUED AT 281500UTC PRESSURE GRADIENT IS STEEP GALE WARNING EASTERN SEA OFF SANRIKU, WESTERN SEA OFF SANRIKU WITH MAX WINDS 45 KT NORTHERN SEA OFF KANTO WITH 35 KT WARNING(NEAR GALE) SOUTHERN SEA OFF KANTO, EASTERN SEA OFF TOKAI NXT WARNING WILL BE ISSUED BEFORE 282100UTC =