The following is a list of terms relevant to hurricanes and tropical storms. If a storm threatens the Charleston County area and you are either required or feel the need to evacuate, please see our Evacuation Information.

Tropical Storm:
Once winds within tropical system reach 39 mph and the distinct low pressure area is well defined by a rotating circulation, the system is considered a tropical storm and is given a name.

Hurricane:
A Tropical Storm that has sustained winds exceeding 74 mph or greater, dangerously high water and rough seas.

Hurricane Watch:
A Hurricane Watch is issued when hurricane conditions are a real possibility for an area within 24-36 hours. For a list of tasks to complete during a Hurricane Watch, see the Hurricane Fact Sheet.

Hurricane Warning:
A Hurricane Warning is issued when a hurricane is expected within 24 hours. Begin precautionary action at once. For a list of tasks to complete during a Hurricane Warning, see the Hurricane Fact Sheet.