Evacuations are more common than many people realize. Fires and floods cause evacuations most frequently across the U.S. and almost every year, people along coastlines evacuate as hurricanes approach. In addition, hundreds of times a year, transportation and industrial accidents release harmful substances, forcing many people to leave their homes.
In some circumstances, local officials decide that the hazards are serious and require mandatory evacuations. In others, evacuations are advised or households decide to evacuate to avoid situations they believe are potentially dangerous. When community evacuations become necessary local officials provide information to the public through the media. In some circumstances, other warning methods, such as sirens, text alerts, emails or telephone calls are used.
The amount of time you have to leave will depend on the hazard. If the event is a weather condition, such as a hurricane, you might have a day or two to get ready. However, many disasters allow no time for people to gather even the most basic necessities, which is why planning ahead is essential.
Source: CivilDispatch.com Blog