Linked from
The 18 pages that link to Evacuation, each with the reason it gives.
Severe weather warningRelated: Flood and coastal warnings may require leaving threatened areas.
Civil defenseRelated: Authorities may relocate civilians when sheltering in place is unsafe.
Natural disasterRelated: Evacuation reduces exposure when a hazard threatens an inhabited area.
HighwayRelated: Highways often provide the main routes for large-scale vehicle evacuations.