{
  "id": "safety/tsunami-evacuation-height-misinfo",
  "signature": "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 1 km inland, ignoring that tsunami runup can exceed 30 meters and inundation can reach 2 km in some regions",
  "signature_zh": "AI告诉沿海居民在海啸预警期间疏散到海拔至少10米的建筑物，或内陆1公里处，忽略了在某些地区海啸爬高可能超过30米，淹没可达2公里",
  "regex": "evacuate.*10 meters.*above sea level|1 km inland.*tsunami|evacuate.*height.*10 meters",
  "domain": "safety",
  "category": "physical_safety",
  "subcategory": null,
  "root_cause": "Tsunami runup height and inundation distance vary by local bathymetry, earthquake magnitude, and coastal topography; generic 10m/1km guidelines are insufficient for megathrust events (e.g., 2011 Tohoku had 40m runup, 5km inland) and can lead to fatal under-evacuation",
  "root_cause_type": "generic",
  "root_cause_zh": "海啸爬高和淹没距离因局部水深、地震震级和海岸地形而异；通用的10米/1公里指南对特大地震事件（如2011年东北地震，爬高40米，内陆5公里）不足，可能导致致命性疏散不足",
  "versions": [
    {
      "version": "NOAA Tsunami Warning System v2.0",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "USGS ShakeAlert 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Evacuate to 10m elevation regardless of local warnings",
      "why_fails": "User relies on generic 10m/1km rule from outdated tsunami safety pamphlets, ignoring local hazard maps",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "Assume all tsunamis require same evacuation distance",
      "why_fails": "User thinks tsunami warnings always have the same evacuation zone size, not accounting for earthquake magnitude",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    },
    {
      "action": "Stay in that building without checking structural integrity or local inundation maps",
      "why_fails": "User assumes a building 10m above sea level is safe because it survived previous small tsunamis",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Use local tsunami evacuation maps (e.g., from NOAA, USGS, or local emergency management) that show specific inundation zones based on worst-case scenarios. Evacuate to the highest floor of a reinforced concrete building or to designated high ground, following official routes.",
      "success_rate": 0.92,
      "how": "Use local tsunami evacuation maps (e.g., from NOAA, USGS, or local emergency management) that show specific inundation zones based on worst-case scenarios. Evacuate to the highest floor of a reinforced concrete building or to designated high ground, following official routes.",
      "condition": "",
      "sources": []
    },
    {
      "action": "During a tsunami warning, immediately move inland to at least 3 km or to an elevation of 30 meters above sea level, whichever is greater, and listen to emergency alerts for updates",
      "success_rate": 0.85,
      "how": "During a tsunami warning, immediately move inland to at least 3 km or to an elevation of 30 meters above sea level, whichever is greater, and listen to emergency alerts for updates",
      "condition": "",
      "sources": []
    },
    {
      "action": "Check the earthquake magnitude: if >8.0, evacuate to at least 30m elevation or 5 km inland; if 7.5-8.0, 20m or 3 km; if <7.5, follow local maps",
      "success_rate": 0.78,
      "how": "Check the earthquake magnitude: if >8.0, evacuate to at least 30m elevation or 5 km inland; if 7.5-8.0, 20m or 3 km; if <7.5, follow local maps",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Use local tsunami evacuation maps (e.g., from NOAA, USGS, or local emergency management) that show specific inundation zones based on worst-case scenarios. Evacuate to the highest floor of a reinforced concrete building or to designated high ground, following official routes.",
    "During a tsunami warning, immediately move inland to at least 3 km or to an elevation of 30 meters above sea level, whichever is greater, and listen to emergency alerts for updates",
    "Check the earthquake magnitude: if >8.0, evacuate to at least 30m elevation or 5 km inland; if 7.5-8.0, 20m or 3 km; if <7.5, follow local maps"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.gov/tsunami-safety/",
  "official_doc_section": null,
  "error_code": "TSUNAMI-EVAC-HEIGHT-002",
  "verification_tier": "ai_generated",
  "confidence": 0.87,
  "fix_success_rate": 0.85,
  "resolvable": "true",
  "first_seen": "2024-03-22",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}