Flooding occurs when there is a temporary overflow of water. It can happen after and / or during a rain event. Even though it is less of a risk than earthquakes and wildfires, it is still a good idea to prepare for it!
To prepare, you can visit FEMA's Flood Map Service Center to learn about flood risks in your community. If your community is at risk for flash flooding, make sure to monitor rain condition, which will help you accuratly predict whether a flash flood will occur. Furthermore, as mentioned on the other pages, you can sign up for your community's warning system and/or the federal government's EAS and NOAA Weather Radio. Make sure to keep important documents in waterproof containers. Always gather materials and food for everyone in your family (including pets and livestock). Ready.gov recommends purchasing flood insurance, and states that it can help protect your belongings and property.
During a flooding event, move to higher ground. Do not try to walk, swim, or drive through flood water, instead turn around and try to escape. Six inches of moving water can knock you down. One foot of water can knock vehicles. Stay off of bridges when a flood event is occuring. Make sure to listen to law enforcement officials and emergency services for evacuation information. If you're in a trapped vehicle during a flooding event, stay inside. If the water infiltrates the car, try to climb onto the roof of the car. If trapped inside of a building, try to get to the roof and signal for help. Do NOT go inside a closed attic, as water will most probably seep inside and fill up. Once you are safe, avoid driving (except in emergencies) and listen to authorties. Do not touch electrical applianecs if you are wet or the appliance itself is wet. Do not walk in floodwater as the debris in the floodwater may injure you.