As discussed by Ryan, several areas of concern have now developed into noteable Tropical Storms set to make landfall.
After reaching Category 4 status earlier this week, Hurricane Katia is no longer being categorized as a Major Hurricane. As of 5am Thursday morning, Katia had sustained winds of 90mph (the storm would need 110+ for it to be considered a Major Hurricane) and is tracking Northward at 14mph. Early tracks planned for Katia to have some sort of impact on the East Coast, but as things are constantly changing in the Gulf, Katia's path has taken a turn, so to speak, for the better.
A rare, but reassuring occurance... ALL models agree that Katia will now TURN back out towards the Atlantic Ocean, leaving the United States unscathed by its fury.
Alternately, it looks as though TS Maria as well as TS Nate will have coastal impacts, but not initially on the US.
Moving West at a quick pace of 23mph, Tropical Storm Maria is packing sustained winds of 50mph. Projections for the storm have Maria reaching the eastern Caribbean islands within the next 48 hours. As of 5am Thursday, forecasters say Maria has a rather disorganized formation, and may not band together in time to make a large impact.
Finally, a trapped and slow moving TS Nate is projected to make landfall in Mexico between Monday and Tuesday of next week. With sustained winds of 45mph, Tropical Storm Nate is only moving at 1mph to the East, so it still has a lot of time and resources to tap into (being centered over the Gulf of Mexico) to organize and gain a bit of power.