Floods and Frozen Ground
Heavy rain falling on frozen ground means that water will run over the ground quickly rather than soaking in, increasing the potential for flash flooding. Melting snow can add even more water to the mix. In smaller rivers and streams, ice jam flooding may occur when ice breaks up and floats downstream, where it piles up and causes water to overflow the banks.
Viewer Tip: Keep an eye on your local forecast or listen to NOAA Weather Radio to monitor flood conditions in your area. According to the National Weather Service, more than half of flood fatalities are vehicle-related. If you are driving, avoid low-lying areas that can be filled with water quickly. Never attempt to cross a flooded roadway in your vehicle or on foot, as the depth of floodwaters is not always obvious, especially if the roadbed underneath is washed out. Remember: Just six-inches of moving water can knock you off your feet; two feet can sweep away most vehicles, including trucks and SUVs.
Season: Winter
(Sources: National Weather Service, www.nws.noaa.gov; American Red Cross. Talking About Disaster: Guide for Standard Messages. Floods and Flash Floods. www.redcross.org)
