NEW: shift in potential track for tropical low in Gulf

AUSTIN (KXAN) -- A disturbance in the northern Gulf of Mexico still lurks off the coast of Louisiana Tuesday, with eyes set on Texas impacts Thursday and Friday.There still remains uncertainty as to where this tropical low will come ashore, but there is increasing confidence that this disturbance will stay sub-tropical storm strength as it runs out of ocean real estate before getting pushed over land. The National Hurricane Center has a 30% probability of further organization within two days.Tro