{
  "sent_alerts": {
    "precipitation:2026-03-27": {
      "dedup_key": "precipitation:2026-03-27",
      "alert_type": "precipitation",
      "sent_at": "2026-03-27T16:01:05.173495",
      "forecast_hour": "2026-03-27-20"
    }
  },
  "last_updated": "2026-03-27T16:01:05.173521",
  "previous_alert_snapshots": {
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      "alert_type": "precipitation",
      "extreme_value": 70.0,
      "threshold": 60,
      "start_time": "2026-03-27-20",
      "end_time": "2026-03-27-20",
      "hour_count": 1,
      "captured_at": "2026-03-27T16:01:05.173509"
    }
  },
  "last_ai_summary_sent": null
}