 A tropical wave moved along the Intertropical Convergence Zone ( ITCZ ) and passed through Cape Verde between August 30 and August 31 . Although the <unk> do <unk> headquarters in <unk> , Brazil reported a closed circulation on August 30 , Tropical Storm Flora did not develop until 0600 UTC on September 2 , while located about 400 miles ( 640 km ) of Cape Verde . The storm strengthened at a steady pace for the following 48 hours and reached hurricane status late on September 3 . Flora headed on a <unk> track , initially moving west @-@ northwestward and then northwesterly by September 4 . It continued to intensify and by September 6 , the storm curved northward . Around time , a minimum barometric pressure of <unk> mbar ( 28 @.@ 6 inHg ) was reported . However , it may have been lower , as the storm did not attain its maximum sustained wind speed of 105 mph ( 165 km / h ) until September 7 . Flora maintained this intensity while curving to the northeast , but became extratropical at 0000 UTC on September 9 , while located about midway between Flores Island in the Azores and <unk> Island , Nova Scotia . 
