safety physical_safety ai_generated true

AI tells a coastal resident during a tsunami warning to evacuate to a building at least 10 meters above sea level, or to a point 100 meters inland

ID: safety/tsunami-evacuation-wrong-height

Also available as: JSON · Markdown · 中文
87%Fix Rate
84%Confidence
1Evidence
2024-09-12First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
NOAA Tsunami Warning Center active — — —
USGS Tsunami Inundation Maps active — — —

Root Cause

Tsunami run-up can exceed 30 meters in some regions; 100 meters inland may still be within inundation zone; guidance depends on local topography and tsunami history; general rule is 'go to high ground or inland beyond reach of waves'.

generic

中文

海啸爬高在某些区域可超过30米；距离海岸100米仍可能在淹没区内；指导方针取决于当地地形和海啸历史；一般原则是“前往高地或波浪无法到达的内陆”。

Official Documentation

https://www.tsunami.gov/

Workarounds

  1. 92% success During a tsunami warning, immediately evacuate on foot to high ground (at least 30 meters elevation if possible) or at least 1 km inland. Follow local evacuation routes marked with signs. Do not drive if roads are congested. 
    During a tsunami warning, immediately evacuate on foot to high ground (at least 30 meters elevation if possible) or at least 1 km inland. Follow local evacuation routes marked with signs. Do not drive if roads are congested.
  2. 80% success If unable to reach high ground, go to the top floor of a reinforced concrete building (at least 3 stories) with a solid foundation. Avoid glass windows. Wait for official all-clear. 
    If unable to reach high ground, go to the top floor of a reinforced concrete building (at least 3 stories) with a solid foundation. Avoid glass windows. Wait for official all-clear.
  3. 90% success Know your local tsunami hazard zone: check NOAA tsunami maps or local emergency management. Sign up for tsunami alerts (e.g., Wireless Emergency Alerts). Practice evacuation drills. 
    Know your local tsunami hazard zone: check NOAA tsunami maps or local emergency management. Sign up for tsunami alerts (e.g., Wireless Emergency Alerts). Practice evacuation drills.

中文步骤

  1. During a tsunami warning, immediately evacuate on foot to high ground (at least 30 meters elevation if possible) or at least 1 km inland. Follow local evacuation routes marked with signs. Do not drive if roads are congested.
  2. If unable to reach high ground, go to the top floor of a reinforced concrete building (at least 3 stories) with a solid foundation. Avoid glass windows. Wait for official all-clear.
  3. Know your local tsunami hazard zone: check NOAA tsunami maps or local emergency management. Sign up for tsunami alerts (e.g., Wireless Emergency Alerts). Practice evacuation drills.

Dead Ends

Common approaches that don't work:

  1. 90% fail

    Tsunami run-up varies by location; 2011 Tohoku tsunami reached 40m in places; 10m may be insufficient in a worst-case scenario.

  2. 95% fail

    Inundation can extend kilometers inland in flat coastal areas (e.g., 2004 Indian Ocean tsunami reached 5 km inland in some areas).

  3. 98% fail

    Basements can flood rapidly; water pressure can prevent door opening; debris can block exits; buildings may collapse.