Heavy rainfall and flash flooding will be a threat over the next few days from California to the Appalachian Mountains and Ohio Valley. weather.gov Know your risk! Is your home, business or school in a floodplain? Where is water likely to collect on the roadways you most often travel? What is the fastest way to get to higher ground? Knowing the answers to these questions ahead of time can save your life. weather.gov/safety | U.S. National Weather Service (NWS)