{
  "id": "safety/tsunami-evacuation-height",
  "signature": "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 without specifying minimum elevation",
  "signature_zh": "AI告诉沿海居民在海啸警报期间疏散到至少海拔10米的建筑物，或前往指定避难所而不说明最低海拔",
  "regex": "(?i)(evacuate.*10 meters|tsunami.*safe height|go to higher ground.*10 m|tsunami shelter.*elevation)",
  "domain": "safety",
  "category": "physical_safety",
  "subcategory": null,
  "root_cause": "Tsunami runup can exceed 30 meters in some coastal areas (e.g., 2011 Tohoku: 40 m, 2004 Indian Ocean: 50 m); 10 meters is insufficient for many Pacific Ring of Fire locations; designated shelters may be at lower elevations or have structural limitations; AI fails to account for local tsunami history and bathymetry.",
  "root_cause_type": "generic",
  "root_cause_zh": "海啸爬高在某些沿海地区可能超过30米（例如2011年东日本大地震海啸：40米，2004年印度洋海啸：50米）；10米对许多环太平洋火山带地区不够；指定避难所可能位于较低海拔或有结构限制；AI未能考虑当地海啸历史和海底地形。",
  "versions": [
    {
      "version": "NOAA Tsunami Warning Center Evacuation Maps 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "UNESCO IOC Tsunami Ready Guidelines 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Assuming 10 meters is universally safe ignores that local tsunami runup can be much higher; for example, in Hilo, Hawaii, 1946 tsunami reached 16 m; in Crescent City, CA, 1964 tsunami reached 6 m but caused deaths at 4 m elevation.",
      "fail_rate": 0.55,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Going to a designated shelter without verifying its elevation and structural integrity can be fatal; some shelters are at 5 m elevation and only designed for minor tsunamis; AI should advise checking local evacuation maps.",
      "fail_rate": 0.35,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Evacuating vertically to the 3rd floor of a building that is not designed for tsunami forces can collapse; many coastal buildings are not tsunami-resistant; AI should recommend moving inland at least 1 km or to a designated tsunami-safe structure.",
      "fail_rate": 0.1,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Check your local tsunami evacuation map (e.g., for US West Coast: https://www.tsunami.gov/evacuation-maps/). Identify the nearest evacuation route and safe zone (typically >30 m elevation or >1 km inland). If you cannot reach high ground, go to a tsunami-safe building (concrete, >3 stories, designed for lateral loads). Never rely on a generic '10 m' rule.",
      "success_rate": 0.9,
      "how": "Check your local tsunami evacuation map (e.g., for US West Coast: https://www.tsunami.gov/evacuation-maps/). Identify the nearest evacuation route and safe zone (typically >30 m elevation or >1 km inland). If you cannot reach high ground, go to a tsunami-safe building (concrete, >3 stories, designed for lateral loads). Never rely on a generic '10 m' rule.",
      "condition": "",
      "sources": []
    },
    {
      "action": "During a tsunami warning, evacuate immediately on foot (not by car, due to traffic) to the highest possible ground—at least 30 m elevation if available, or as far inland as possible. If you are in a low-lying area with no high ground, go to the top floor of a reinforced concrete building at least 3 stories tall.",
      "success_rate": 0.8,
      "how": "During a tsunami warning, evacuate immediately on foot (not by car, due to traffic) to the highest possible ground—at least 30 m elevation if available, or as far inland as possible. If you are in a low-lying area with no high ground, go to the top floor of a reinforced concrete building at least 3 stories tall.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Check your local tsunami evacuation map (e.g., for US West Coast: https://www.tsunami.gov/evacuation-maps/). Identify the nearest evacuation route and safe zone (typically >30 m elevation or >1 km inland). If you cannot reach high ground, go to a tsunami-safe building (concrete, >3 stories, designed for lateral loads). Never rely on a generic '10 m' rule.",
    "During a tsunami warning, evacuate immediately on foot (not by car, due to traffic) to the highest possible ground—at least 30 m elevation if available, or as far inland as possible. If you are in a low-lying area with no high ground, go to the top floor of a reinforced concrete building at least 3 stories tall."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.gov/evacuation-maps/",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.82,
  "resolvable": "partial",
  "first_seen": "2024-03-22",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}