{
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      "dedup_key": "precipitation:2026-04-25",
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      "sent_at": "2026-04-25T04:01:04.951776",
      "forecast_hour": "2026-04-25-08"
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  "last_updated": "2026-04-25T04:01:04.951822",
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      "extreme_value": 63.0,
      "threshold": 60,
      "start_time": "2026-04-25-08",
      "end_time": "2026-04-25-08",
      "hour_count": 1,
      "captured_at": "2026-04-25T04:01:04.951801"
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  "last_ai_summary_sent": null
}