{
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    "temperature_low:2026-02-05": {
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      "alert_type": "temperature_low",
      "sent_at": "2026-02-05T00:01:04.544484",
      "forecast_hour": "2026-02-05-02"
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  },
  "last_updated": "2026-02-05T00:01:04.544518",
  "previous_alert_snapshots": {
    "temperature_low": {
      "alert_type": "temperature_low",
      "extreme_value": 31.0,
      "threshold": 32,
      "start_time": "2026-02-05-02",
      "end_time": "2026-02-05-04",
      "hour_count": 3,
      "captured_at": "2026-02-05T00:01:04.544512"
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  "last_ai_summary_sent": null
}