We keep the motorhome mostly packed and ready to go in storage. We got to put that in practice at the beginning of October when hurricane Matthew approached. We had just returned from our seasonal camping trip three weeks previously and had take some stuff out to clean, etc. Most of it was ready to go back in, just hadn't been taken to the MH in storage about a mile from home. It only took about an hour to pack it and get heading west.
When we returned, we had no power at the house. The generator was already running since we were running the rooftop A/C. We just ran a long extension cord into the house to run the refrigerator, lights at night and do a couple loads of wash (had to hang dry since our drier is electric - 240v). We also watched some movies at night.
I was surprised at how little gas the generator used running straight for almost 36 hours. We had a little more than half a tank of gas when we pulled into the driveway. When we pulled out after running the generator for almost 2 days, the needle had barely moved.
It is definitely nice having the motorhome so close to home in instances like that. We evacuated pretty early. We couldn't find a full hook-up site, but we did find an electric site about 3 hours away. On our way out west, there were portable road side signs claiming all hotels were booked and to keep heading west. We felt bad for folks looking for hotel rooms. The Walmarts along the way back were full over RVers waiting out the storm.
-Michael