{
  "sent_alerts": {
    "precipitation:2026-03-10": {
      "dedup_key": "precipitation:2026-03-10",
      "alert_type": "precipitation",
      "sent_at": "2026-03-09T20:01:04.687100",
      "forecast_hour": "2026-03-10-00"
    }
  },
  "last_updated": "2026-03-11T12:01:03.773003",
  "previous_alert_snapshots": {},
  "last_ai_summary_sent": null
}