{
  "id": "disaster/tsunami-evacuation-vertical-myth",
  "signature": "AI advises vertical evacuation to upper floors of a building during a tsunami within the inundation zone",
  "signature_zh": "AI 建议在海啸淹没区内垂直疏散到建筑物上层",
  "regex": "vertical.?evacuation|upper.?floors?|tsunami.?building",
  "domain": "disaster",
  "category": "life_threatening",
  "subcategory": null,
  "root_cause": "Vertical evacuation to upper floors is only safe if the building is specifically engineered as a tsunami vertical evacuation refuge; most coastal buildings are not designed to withstand tsunami hydrodynamic forces and will collapse or be swept away.",
  "root_cause_type": "generic",
  "root_cause_zh": "垂直疏散到上层仅在建筑物专门设计为海啸垂直避难所时才安全；大多数沿海建筑未设计承受海啸水动力，会倒塌或被冲走。",
  "versions": [
    {
      "version": "NOAA TsunamiReady v3.2",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "FEMA P-646 (2023)",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Assume any multi-story concrete building is safe for vertical evacuation",
      "why_fails": "Concrete buildings without deep foundations and shear walls fail under tsunami surge and scour",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "Climb to the roof of a hotel near the beach",
      "why_fails": "Roofs are often swept away by wave overtopping; no structural tie-downs",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "Evacuate to the top floor of a parking garage",
      "why_fails": "Parking garages have open sides and are not designed for lateral water pressure",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Identify pre-designated tsunami vertical evacuation structures via local emergency management maps; if none within 15-minute walk, evacuate horizontally inland to at least 100 feet elevation or 1 mile from coast",
      "success_rate": 0.8,
      "how": "Identify pre-designated tsunami vertical evacuation structures via local emergency management maps; if none within 15-minute walk, evacuate horizontally inland to at least 100 feet elevation or 1 mile from coast",
      "condition": "",
      "sources": []
    },
    {
      "action": "If trapped in a non-reinforced building, move to the third floor or higher and tie yourself to a solid interior column with rope or belts, avoiding windows and exterior walls",
      "success_rate": 0.6,
      "how": "If trapped in a non-reinforced building, move to the third floor or higher and tie yourself to a solid interior column with rope or belts, avoiding windows and exterior walls",
      "condition": "",
      "sources": []
    },
    {
      "action": "Use the NOAA Tsunami Evacuation Map app on iOS/Android: `curl -O https://tsunami.noaa.gov/maps/evacuation.kml && python3 -c \"import xml.etree.ElementTree as ET; tree=ET.parse('evacuation.kml'); root=tree.getroot(); print([p.find('name').text for p in root.iter('{http://www.opengis.net/kml/2.2}Placemark') if 'vertical' in p.find('name').text.lower()])\"` to find certified vertical refuges",
      "success_rate": 0.9,
      "how": "Use the NOAA Tsunami Evacuation Map app on iOS/Android: `curl -O https://tsunami.noaa.gov/maps/evacuation.kml && python3 -c \"import xml.etree.ElementTree as ET; tree=ET.parse('evacuation.kml'); root=tree.getroot(); print([p.find('name').text for p in root.iter('{http://www.opengis.net/kml/2.2}Placemark') if 'vertical' in p.find('name').text.lower()])\"` to find certified vertical refuges",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Identify pre-designated tsunami vertical evacuation structures via local emergency management maps; if none within 15-minute walk, evacuate horizontally inland to at least 100 feet elevation or 1 mile from coast",
    "If trapped in a non-reinforced building, move to the third floor or higher and tie yourself to a solid interior column with rope or belts, avoiding windows and exterior walls",
    "Use the NOAA Tsunami Evacuation Map app on iOS/Android: `curl -O https://tsunami.noaa.gov/maps/evacuation.kml && python3 -c \"import xml.etree.ElementTree as ET; tree=ET.parse('evacuation.kml'); root=tree.getroot(); print([p.find('name').text for p in root.iter('{http://www.opengis.net/kml/2.2}Placemark') if 'vertical' in p.find('name').text.lower()])\"` to find certified vertical refuges"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.noaa.gov/vertical-evacuation-guidelines",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.75,
  "resolvable": "partial",
  "first_seen": "2024-03-15",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}