{
  "sent_alerts": {
    "precipitation:2026-02-15": {
      "dedup_key": "precipitation:2026-02-15",
      "alert_type": "precipitation",
      "sent_at": "2026-02-15T04:01:08.196632",
      "forecast_hour": "2026-02-15-06"
    }
  },
  "last_updated": "2026-02-17T12:01:03.415118",
  "previous_alert_snapshots": {},
  "last_ai_summary_sent": null
}