Why do I keep dreaming about a tornado?

My dream starts with me going to work and then while on my way I get warnings that tornadoes are on the way. Once I get to work it is closed and I see five funnel clouds start to appear. I see many people getting on the highway but there is enough time for me to get away and off the ramp. I see a safe place in church but others are lanquishing out in the courtyard. A tornado comes down and right before it hits I push several people inside to safety. After the tornado passes I go outside and dodge three cars which were pushed in my direction by the highway which is now facing the contorted parking lot. I am called away from the parking lot by the people on the inside of the church so I walk away. I suddenly think of my mom whose phone is off so I drive to her who is for some strange reason having a cook out. I secure her and push her inside. I then go back out and I am downtown now in a wave of windows and large structures. I see a couple and I push them inside as we see a large tornado coming towards us and then I wake up.

This dreams occurs over and over and over again adding more details on each recount.