 While at peak intensity , the storm maintained a well @-@ organized and " impressive " convective pattern . Soon after the storm peaked in strength , increasing wind shear and dry air caused Nate to weaken back into a tropical storm later on September 9 . Satellite imagery showed that the cloud pattern began to rapidly deteriorate . The hurricane was downgraded to a tropical storm at 1800 UTC on September 9 and continued to weaken as wind shear increased in association with an approaching trough and a related cold front . By late on September 9 , all of the already limited convective activity was confined to the eastern semicircle , leaving the low @-@ level center exposed . The storm was reduced to a swirl of low @-@ level clouds just hours later . Nate became extratropical the next day before becoming absorbed by a larger system by 0000 UTC on September 13 , to the north @-@ northeast of the Azores . 
