This invest is located well out to sea in the middle of the Atlantic and is posing no threat to land. The National Hurricane Center (NHC) is labeling this system with a 50% chance of formation in the next 48 hours. It only has a small window of opportunity for formation before it interacts with a frontal system and becomes extratropical.
Movement is northward at 10-15 MPH, and forecast models show that Invest 91 will generally continue with this path before making a curve to the east, possibly towards Europe. At that point, the chance for tropical cyclone formation appears possible, but still not a threat to the US.