▁was ▁determined ▁in ▁post - st orm ▁analysis , ▁that ▁Ana ▁had ▁deg ener ated ▁into ▁a ▁tropical ▁wave ▁shortly ▁afterwards , ▁and ▁was ▁no ▁longer ▁a ▁tropical ▁cy clone . ▁Several ▁hours ▁later , ▁the ▁system ▁re develop ed ▁con ve ction ▁as ▁it ▁rac ed ▁towards ▁the ▁west - n orth west ▁at ▁ 2 6   m ph ▁( 4 2   km / h ). ▁Early ▁on ▁August   1 7 , ▁rad ar ▁imag ery ▁from ▁Gu adel oupe ▁and ▁San ▁Juan , ▁Puerto ▁Rico ▁dep icted ▁a ▁system ▁without ▁a ▁closed , ▁low - level ▁circul ation . ▁Despite ▁this , ▁the ▁N HC ▁continued ▁oper ational ▁advis ories ▁until ▁confirm ation ▁could ▁be ▁made ▁with ▁visible ▁satellite ▁imag ery . ▁Later ▁that ▁day , ▁a ▁final ▁reconna issance ▁plane ▁fle w ▁into ▁the ▁storm ▁and ▁did ▁not ▁find ▁a ▁low - level ▁circul ation . ▁Following ▁this , ▁the ▁N HC ▁stated ▁that ▁Ana ▁had ▁diss ip ated ▁off ▁the ▁coast ▁of ▁Puerto ▁Rico , ▁despite ▁having ▁already ▁deg ener ated ▁into ▁a ▁tropical ▁wave ▁the ▁previous ▁day . ▁The ▁rem n ants ▁of ▁Ana ▁were ▁once ▁more ▁monitor ed ▁for ▁signs ▁of ▁reg ener ation , ▁but ▁land ▁interaction ▁with ▁His p ani ola ▁and ▁Cuba ▁destroyed ▁any ▁chance ▁of ▁re development . ▁ ▁Pre par ations ▁and ▁impact ▁ ▁On ▁August   1 5 , ▁a ▁tropical ▁storm ▁watch ▁was ▁issued ▁for ▁much ▁of ▁the ▁Le ew ard ▁Islands . ▁Two ▁days ▁later ,