Katia a hurricane, looking out to sea with latest model runs
It does appear that the East Coast will likely be safe from Katia, but not for sure. Ensembles show Katia strengthening to a major hurricane as it moves NW. One model has Katia in Category 5 strength. Here's the NHC's track.
And here is historical tracks for storms located within 2 degrees of Katia at this moment.