The best battery backup sump pump can make a lot of difference when the storm hit your area, affecting the power grid, as well. Flooding in your basement is not a pretty thing to think about. The issue with unpredictable weather is that it can leave you stranded and isolated in your own home if you don't have the right equipment. Global warming is changing the weather patterns, and unlike in the past, you can never know when an enormous storm is on the horizon.
