{
  "sent_alerts": {
    "wind_gust:2026-02-19": {
      "dedup_key": "wind_gust:2026-02-19",
      "alert_type": "wind_gust",
      "sent_at": "2026-02-19T20:01:04.687284",
      "forecast_hour": "2026-02-19-21"
    }
  },
  "last_updated": "2026-02-19T20:01:04.687327",
  "previous_alert_snapshots": {
    "wind_gust": {
      "alert_type": "wind_gust",
      "extreme_value": 31.1,
      "threshold": 30,
      "start_time": "2026-02-19-21",
      "end_time": "2026-02-20-00",
      "hour_count": 2,
      "captured_at": "2026-02-19T20:01:04.687309"
    }
  },
  "last_ai_summary_sent": null
}