Flash flood watch - issued when flash flooding is possible in certain areas. During a flash flood watch, keep an eye on the weather and listen to the radio or television for more information.
Flash flood warning - the most urgent type of warning. A flash flood warning is issued when a flash flood has been reported or is going to happen soon. If a flash flood warning is given in your area, you should take immediate action to move to higher ground.
Flood watch - issued when flooding is possible. During a flood watch, keep an eye on the weather and listen to the radio or television for more information. Prepare for a flood by moving possessions to a higher floor, filling the tub with water, and getting ready for a possible evacuation.
Flood warning - indicates that flooding has already started or will soon. You should listen to the radio or television for directions from emergency preparedness officials. Be prepared to take shelter or evacuate.