Hunkered Down for the Storm

I (30) live close to the coast, and my only sibling (27) lives right on the coast. She shared an apartment; then a Hurricane tracked towards us, and evacuation orders were issued. My sister came to me with her pet cat; her two roommates also went to their relatives. My home is very strongly built, a Cold War-era bunker-type construction that I turned into a home. With steel shutters and steel doors, it was built to withstand blast waves, according to the local authorities when I applied to turn it into a home. I had solar panels, wind turbines, and battery backup. My sister settled in quickly; her cat just found her perfect place and went to sleep, only moving when food was available. The Hurricane slowed as it approached, but it kept on track. About three hours after my sister had arrived, all outside movement was restricted. Then the noise of the Hurricane increased; my sister decided to cuddle into me for comfort. The Hurricane had still not made landfall; then it did, and my sister cuddled me even tighter. I got aroused and started to feel her up; at first, she didn't react. But then she responded in kind by feeling me up. As they say, one thing led to another, and by the time the eye of the storm arrived overhead, we were fucking. We kept fucking regularly over the following days. After she was allowed to return to see her apartment, it was damaged nothing too serious; windows and glass doors blown in, and water damage. Her roommates decided to relocate; my sister also did, back to living with me. The only consequence was that we now have a son together to raise. Fucking without precautions can cause pregnancy.