Flood Warning: A Flood or Flash Flood Warning is issued to inform the public that flooding is imminent or in progress. It focuses on specific counties, communities, streams, or areas. Flash Flood Warnings are issued for flooding usually occurring within 6 hours of heavy rain.
An Areal Flood Warning is issued for flooding that occurs more gradually, normally from prolonged and persistent moderate to heavy rainfall. A River Flood Warning is issued when a river is forecast to go above its designated flood stage at the forecast point.