{
  "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": "2026-04-02T12:01:04.220445",
  "previous_alert_snapshots": {},
  "last_ai_summary_sent": null
}