AI tells a coastal resident during a tsunami warning to evacuate to a building at least 10 meters above sea level, or to go to a designated shelter 5 km inland, ignoring local evacuation maps and time constraints
ID: safety/tsunami-evacuation-vertical-guidance
Version Compatibility
| Version | Status | Introduced | Deprecated | Notes |
|---|---|---|---|---|
| NOAA Tsunami Warning System v2.0 | active | — | — | — |
| USGS Tsunami Inundation Maps 2024 | active | — | — | — |
| FEMA P-646: Guidelines for Design of Structures for Vertical Evacuation from Tsunamis | active | — | — | — |
Root Cause
Tsunami evacuation height and distance depend on local bathymetry, tsunami wave height, and travel time; generic 10-meter height or 5-km distance may be insufficient for a large tsunami (e.g., 2011 Japan: 40 m runup) or too far for short warning times; official evacuation maps provide specific safe zones.
generic中文
海啸疏散高度和距离取决于当地水深、海啸波高和旅行时间；通用的10米高度或5公里距离可能不足以应对大海啸（例如2011年日本：40米爬高），或在预警时间短时太远；官方疏散地图提供具体的安全区域。
Official Documentation
https://www.tsunami.gov/Workarounds
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90% success Use official local tsunami evacuation maps (e.g., from county emergency management) to identify safe zones. For US West Coast, visit https://www.tsunami.gov/ and select your region. Map shows inundation zones and evacuation routes.
Use official local tsunami evacuation maps (e.g., from county emergency management) to identify safe zones. For US West Coast, visit https://www.tsunami.gov/ and select your region. Map shows inundation zones and evacuation routes.
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85% success If no map is available, evacuate to the highest floor of a reinforced concrete building at least 20 meters above sea level, or at least 1 km inland, but prioritize vertical evacuation within 15 minutes if warning time is short.
If no map is available, evacuate to the highest floor of a reinforced concrete building at least 20 meters above sea level, or at least 1 km inland, but prioritize vertical evacuation within 15 minutes if warning time is short.
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95% success Install the NOAA Weather Radio app or subscribe to local emergency alerts (e.g., Wireless Emergency Alerts) for real-time tsunami warnings. Follow instructions from local authorities, not generic AI advice.
Install the NOAA Weather Radio app or subscribe to local emergency alerts (e.g., Wireless Emergency Alerts) for real-time tsunami warnings. Follow instructions from local authorities, not generic AI advice.
中文步骤
Use official local tsunami evacuation maps (e.g., from county emergency management) to identify safe zones. For US West Coast, visit https://www.tsunami.gov/ and select your region. Map shows inundation zones and evacuation routes.
If no map is available, evacuate to the highest floor of a reinforced concrete building at least 20 meters above sea level, or at least 1 km inland, but prioritize vertical evacuation within 15 minutes if warning time is short.
Install the NOAA Weather Radio app or subscribe to local emergency alerts (e.g., Wireless Emergency Alerts) for real-time tsunami warnings. Follow instructions from local authorities, not generic AI advice.
Dead Ends
Common approaches that don't work:
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60% fail
Buildings not designed for tsunami loads can collapse; even concrete structures may be undermined by scour. Only designated tsunami-safe buildings (e.g., vertical evacuation structures) are reliable.
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70% fail
Roads can be congested, blocked by debris, or damaged; walking to high ground or a vertical shelter is often safer within the warning time.
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80% fail
Apps may not account for local topography (e.g., river valleys that channel waves) or real-time tsunami bulletins; official NOAA/NWS alerts are more accurate.