{
  "sent_alerts": {
    "precipitation:2026-02-26": {
      "dedup_key": "precipitation:2026-02-26",
      "alert_type": "precipitation",
      "sent_at": "2026-02-25T20:01:03.344976",
      "forecast_hour": "2026-02-26-00"
    }
  },
  "last_updated": "2026-02-26T08:01:04.909661",
  "previous_alert_snapshots": {
    "precipitation": {
      "alert_type": "precipitation",
      "extreme_value": 96.0,
      "threshold": 60,
      "start_time": "2026-02-26-09",
      "end_time": "2026-02-26-12",
      "hour_count": 4,
      "captured_at": "2026-02-26T08:01:04.909657"
    }
  },
  "last_ai_summary_sent": null
}