h ), ▁and ▁developed ▁atmos pher ic ▁con ve ction ▁along ▁the ▁wave ▁axis . ▁It ▁slowly ▁organized , ▁developing ▁a ▁low - level ▁circul ation , ▁and ▁formed ▁into ▁a ▁tropical ▁de pression ▁on ▁August ▁ 2 0 ▁while ▁located ▁about ▁ 7 7 5   m iles ▁( 1 , 2 5 0   km ) ▁east ▁of ▁Barb ados . ▁A ▁reconna issance ▁aircraft ▁flight ▁into ▁the ▁system ▁on ▁August ▁ 2 1 ▁confirmed ▁the ▁existence ▁of ▁a ▁de pression , ▁which ▁reported ▁wind s ▁of ▁only ▁ 2 3   m ph ▁( 3 7   km / h ) ▁with ▁a ▁pressure ▁of ▁ 1 , 0 1 2 ▁m bar . ▁The ▁de pression ▁slowly ▁strength ened ▁and ▁organized , ▁and ▁after ▁turning ▁to ▁the ▁west - n orth west , ▁it ▁intens ified ▁into ▁Trop ical ▁Storm ▁Em my ▁on ▁August ▁ 2 2 ▁while ▁located ▁ 3 7 0   m iles ▁( 6 0 0   km ) ▁east - n ortheast ▁of ▁Gu adel oupe . ▁The ▁tropical ▁wave ▁from ▁which ▁Em my ▁developed ▁from ▁continued ▁west ward ▁through ▁the ▁Car ib bean ▁Sea ▁and ▁ultimately ▁developed ▁into ▁Trop ical ▁Storm ▁Jo anna ▁in ▁the ▁eastern ▁Pacific ▁Ocean . ▁ ▁Trop ical ▁Storm ▁Em my ▁turned ▁more ▁to ▁the ▁north west , ▁and ▁passed ▁about ▁ 1 3 5   m iles ▁( 2 2 0   km ) ▁n ortheast ▁of ▁Barb uda ▁on ▁August ▁ 2 3 . ▁The ▁rapid ▁development