{
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      "forecast_hour": "2026-04-18-22"
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      "sent_at": "2026-04-19T00:01:03.956129",
      "forecast_hour": "2026-04-19-01"
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  "last_updated": "2026-04-25T00:01:04.778806",
  "previous_alert_snapshots": {},
  "last_ai_summary_sent": null
}