Yes, it has happened before. According to the National Hurricane Center, you'd have to go all the way back to Sept. 4, 1933, when a major hurricane was over South Florida and another major hurricane was over the Western Gulf. This time, however, the storms could be a lot closer to each other, giving rise to the rare natural occurrence known as “The Fujiwhara Effect.”
It’s a weather phenomenon that happens when two hurricanes get within 100 tp 200 miles of other and close the distance between the circulations. The effect is named after Sakuhei Fujiwhara, the Japanese meteorologist who first wrote about it in 1921.
Essentially, if it were to happen and the storms were close enough to each other, the two circulations would be attracted to each other and eventually spiral into a center point and merge. The result? One large hurricane. We live in Southeast Texas and are watching. They are still too far out to be certain where they are going to land...usually we can not be sure until 36-24 hours before landfall. As it is now, one is forecast to land in Louisiana Mon. and the other in the same area on Tues.
The worst area to be in is to the Northeast of the center of a storm. That is the area where you will have all the tornadoes that spin off from the storm. Going to pull the generator out tomorrow and test it out. If it comes too close to us, we usually will lose power for a week or more and have no power to run our well. But its that time of the year for a storm...