Flood in Golestan province in August 2001

There’s actually a difference between a flood watch and a flood warning; not every alert means it’s time to evacuate your area. WATCH How Being Drunk Affects Every Sense A flood watch or advisory is a heads-up to be prepared, Nelson explains. (For example, you should probably move your car to higher ground, just in case.) These alerts do not mean flooding will occur, just that flooding is possible and that you should be cautious.