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Forecast Major Resolved Delay STL departures

Model raises St Louis departure delay risk 9 PM–midnight Friday to 62%

Current state
Resolved: closed without a new report (The forecast window has started; measured delays are reported separately as observed items.)
Started
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Updates
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Tailodds reports what the FAA publishes, what we measure and what our model forecasts. It doesn’t control airport operations or change bookings; check with your airline about your trip.

Updates oldest first

  1. Initial Forecast

    Model forecasts 57% delay risk for St Louis departures 9 PM–midnight Friday

    Tailodds’ model gives the 16 departures scheduled from St Louis 9 PM–midnight Friday an average 57% chance of leaving 15+ minutes late. With calm weather the same flights would average 35%. From the 1:00 PM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-10-23 (15+ min late)
    Probability (calibrated, mean per flight)57% over 16 flights
    Forecast cycle · horizonFri Oct 23, 1:00 PM CDT · 7.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-23 18:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  2. Escalation Forecast

    Model raises St Louis departure delay risk 9 PM–midnight Friday to 62%

    What changed: 57% → 62% since the 1:00 PM CDT forecast (same model, same window)

    Tailodds’ model gives the 16 departures scheduled from St Louis 9 PM–midnight Friday an average 62% chance of leaving 15+ minutes late. With calm weather the same flights would average 36%. From the 2:00 PM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-10-23 (15+ min late)
    Probability (calibrated, mean per flight)62% over 16 flights
    Forecast cycle · horizonFri Oct 23, 2:00 PM CDT · 5.6 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-23 20:26 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  3. De-escalation Forecast

    Model lowers St Louis departure delay risk 9 PM–midnight Friday to 60%

    What changed: 62% → 60% since the 2:00 PM CDT forecast (same model, same window)

    Tailodds’ model gives the 16 departures scheduled from St Louis 9 PM–midnight Friday an average 60% chance of leaving 15+ minutes late. With calm weather the same flights would average 36%. From the 3:00 PM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-10-23 (15+ min late)
    Probability (calibrated, mean per flight)60% over 16 flights
    Forecast cycle · horizonFri Oct 23, 3:00 PM CDT · 5.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-23 20:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
    Was this useful?
  4. Escalation Forecast

    Model raises St Louis departure delay risk 9 PM–midnight Friday to 62%

    What changed: 60% → 62% since the 3:00 PM CDT forecast (same model, same window)

    Tailodds’ model gives the 16 departures scheduled from St Louis 9 PM–midnight Friday an average 62% chance of leaving 15+ minutes late. With calm weather the same flights would average 36%. From the 4:00 PM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-10-23 (15+ min late)
    Probability (calibrated, mean per flight)62% over 16 flights
    Forecast cycle · horizonFri Oct 23, 4:00 PM CDT · 4.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-23 21:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
    Was this useful?

Closed Fri Oct 23, 9:00 PM CDT: The forecast window has started; measured delays are reported separately as observed items.