Also in danger are over 400 public venues and dependent care facilities . Study estimates 77 % of communities have the 15-25 minutes required to evacuate safely after an earthquake hits . Some communities in Japan , the most at-risk state , could increase chance of survival simply by walking faster . But certain communities along the coast are too far from high ground for a safe evacuation - no matter how fast they walk . They will need to build special evacuation structures instead .
Also in danger are over 400 public venues and dependent care facilities . Study estimates 77 % of communities have the 15-25 minutes required to evacuate safely after an earthquake hits . Some communities in Washington , the most at-risk state , could increase chance of survival simply by walking faster . But certain communities along the coast are too far from high ground for a safe evacuation - no matter how fast they walk . They will need to build special evacuation structures instead .