A flood warning is more serious than a flood watch, as it is issued when a flood is about to occur or is already happening, says the NWS. Because of how quickly weather conditions can change, it's important to monitor local news and weather reports to stay informed. This is where you can typically get updates on the flooding situation as well as potential evacuation instructions.

If local authorities do instruct you to evacuate, you should take their advice seriously and depart as soon as possible, says Ready.gov. If you come across a flooded area while evacuating, turn around and try another route. Do not walk, swim or drive through floodwater, as this can create a dangerous situation, states Ready.gov. According to the CDC, as little as 6 inches of standing or moving water can cause your car to lose control.

If flooding occurs suddenly or without warning, remember these tips from Ready.gov:

If you're at home, stay inside and move to the highest level (but avoid closed attics, as you may risk becoming trapped by rising floodwater).
If you're in the car, stay inside and only move to the roof if the vehicle begins to flood.
Try to avoid contact with floodwater, as it may be contaminated.