▁cy clone ▁moved ▁north - n orth west ▁and ▁then ▁west - n orth west , ▁par alle ling ▁the ▁coast line ▁of ▁Mexico ▁under ▁the ▁influence ▁of ▁a ▁subt rop ical ▁r idge , ▁where ▁land sl ides ▁and ▁mud sl ides ▁cut ▁communication ▁to ▁ 1 2 ▁mountain ▁villages . ▁Under ▁a ▁moder ate ▁e aster ly ▁wind ▁she ar ▁regime , ▁D ora ▁ultimately ▁changed ▁little ▁in ▁strength , ▁pe aking ▁with ▁wind s ▁of ▁ 4 5   m ph ▁( 7 5   km / h ) ▁as ▁the ▁center ▁became ▁obsc ured ▁on ▁the ▁eastern ▁edge ▁of ▁extremely ▁deep ▁con ve ction . ▁A ▁track ▁over ▁col der ▁waters ▁caused ▁the ▁storm ▁to ▁fall ▁to ▁tropical ▁de pression ▁intensity ▁late ▁on ▁July   5 ▁and ▁deg ener ate ▁into ▁a ▁rem nant ▁low ▁by ▁ 1 2 : 0 0   UTC ▁on ▁July   6 . ▁The ▁low ▁then ▁diss ip ated ▁six ▁hours ▁later . ▁ ▁Trop ical ▁Storm ▁Eug ene ▁ ▁A ▁tropical ▁wave ▁first ▁identified ▁over ▁the ▁Car ib bean ▁Sea ▁on ▁July   1 0 ▁entered ▁the ▁eastern ▁Pacific ▁four ▁days ▁later . ▁The ▁disturb ance ▁organized ▁as ▁band ing ▁features ▁became ▁distinct , ▁leading ▁to ▁the ▁formation ▁of ▁a ▁tropical ▁de pression ▁by ▁ 0 6 : 0 0   UTC ▁on ▁July   1 8 . ▁The ▁cy clone ▁intens ified ▁into ▁Trop ical ▁Storm ▁Eug ene ▁six ▁hours ▁later ▁as ▁a ▁mid - level ▁r idge ▁ste ered ▁it