{
  "id": "emergency/tsunami-vertical-evacuation",
  "signature": "AI tells users to 'evacuate to high ground' during a tsunami, but vertical evacuation in reinforced concrete buildings is a validated alternative in flat coastal areas",
  "signature_zh": "AI告诉用户在海啸期间'疏散到高地'，但在平坦沿海地区，钢筋混凝土建筑的垂直疏散是经过验证的替代方案",
  "regex": "tsunami.*(?:evacuate|evacuation).*(?:high ground|hill|mountain)",
  "domain": "emergency",
  "category": "life_safety",
  "subcategory": null,
  "root_cause": "In regions without nearby high ground (e.g., Pacific Northwest coast), vertical evacuation to designated tsunami-safe buildings (4+ stories, reinforced concrete) is the only viable option; 'high ground' advice may be impossible.",
  "root_cause_type": "generic",
  "root_cause_zh": "在缺乏附近高地的地区（如太平洋西北海岸），垂直疏散到指定的海啸安全建筑（4层以上，钢筋混凝土）是唯一可行的选择；'高地'建议可能无法实现。",
  "versions": [
    {
      "version": "NOAA TsunamiReady 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "FEMA P-646 Guidelines 2022",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Run to the nearest hill or elevated area regardless of distance",
      "why_fails": "In flat coastal plains (e.g., Ocean Shores, WA), nearest hill may be miles away; victim cannot outrun tsunami wave traveling at 500+ mph.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "Climb a tree or light pole for elevation",
      "why_fails": "Tsunami debris and water force will sweep person away; tree may uproot; height insufficient for wave surge.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "Drive away from coast in a car",
      "why_fails": "Roads may be congested or damaged; tsunami can arrive within minutes; pedestrian evacuation is faster in many cases.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Identify nearest designated vertical evacuation structure (typically 4+ story reinforced concrete building) before tsunami warning. Proceed to upper floors (3rd floor or above) immediately when warning is issued.",
      "success_rate": 0.85,
      "how": "Identify nearest designated vertical evacuation structure (typically 4+ story reinforced concrete building) before tsunami warning. Proceed to upper floors (3rd floor or above) immediately when warning is issued.",
      "condition": "",
      "sources": []
    },
    {
      "action": "If no designated structure, go to any multi-story reinforced concrete building (e.g., hospital, school, hotel) and ascend to 4th floor or higher. Avoid wood-frame buildings.",
      "success_rate": 0.7,
      "how": "If no designated structure, go to any multi-story reinforced concrete building (e.g., hospital, school, hotel) and ascend to 4th floor or higher. Avoid wood-frame buildings.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Identify nearest designated vertical evacuation structure (typically 4+ story reinforced concrete building) before tsunami warning. Proceed to upper floors (3rd floor or above) immediately when warning is issued.",
    "If no designated structure, go to any multi-story reinforced concrete building (e.g., hospital, school, hotel) and ascend to 4th floor or higher. Avoid wood-frame buildings."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.noaa.gov/vertical-evacuation",
  "official_doc_section": null,
  "error_code": "TSUNAMI-VERT-ERR-001",
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.8,
  "resolvable": "partial",
  "first_seen": "2024-01-10",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}