TSUNAMI-VERT-ERR-006 emergency life_safety ai_generated partial

AI tells coastal residents to 'evacuate to high ground' during a tsunami, but vertical evacuation in reinforced concrete buildings is recommended if no time to reach high ground

ID: emergency/tsunami-vertical-evacuation-building

Also available as: JSON · Markdown · 中文
79%Fix Rate
86%Confidence
1Evidence
2025-02-28First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
NOAA TsunamiReady 2024 active — — —
USGS Tsunami Sources 2023 active — — —
UNESCO IOC Tsunami Guidance 2022 active — — —

Root Cause

The AI omits the critical nuance that when time is insufficient to reach high ground (e.g., near-field tsunami), vertical evacuation to the upper floors (above predicted inundation height) of a tsunami-resistant building is the recommended alternative.

generic

中文

AI省略了关键细节：当时间不足以到达高地时（例如近海海啸），垂直疏散到海啸抗性建筑的高层（高于预测淹没高度）是推荐的替代方案。

Official Documentation

https://www.tsunami.gov/

Workarounds

  1. 90% success Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.' 
    Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.'
  2. 85% success Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.' 
    Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.'
  3. 88% success Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.' 
    Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.'

中文步骤

  1. Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.'
  2. Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.'
  3. Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.'

Dead Ends

Common approaches that don't work:

  1. Telling everyone to 'run to the nearest hill' regardless of distance 80% fail

    In near-field tsunamis (e.g., Cascadia subduction zone), waves arrive in 15-30 minutes; running may not be feasible for elderly or disabled

  2. Advising to 'climb a tree' as vertical evacuation 95% fail

    Trees are not structurally safe; debris impact and water force can knock people out

  3. Recommending 'go to the roof of a wooden house' 85% fail

    Wooden structures are not tsunami-resistant; concrete buildings with deep foundations are required