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Forecast Major Developing Delay ORD departures

Model raises O'Hare departure delay risk 9 AM–noon Saturday to 58%

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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.

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  1. Initial Forecast

    Model forecasts 53% delay risk for O'Hare departures 9 AM–noon Saturday

    Tailodds’ model gives the 237 departures scheduled from O'Hare 9 AM–noon Saturday an average 53% chance of leaving 15+ minutes late. With calm weather the same flights would average 21%. From the 3:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetORD departures 9 AM–noon 2026-11-14 (15+ min late)
    Probability (calibrated, mean per flight)53% over 237 flights
    Forecast cycle · horizonSat Nov 14, 3:00 AM CST · 5.0 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-14 09:58 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 O'Hare departure delay risk 9 AM–noon Saturday to 58%

    What changed: 53% → 58% since the 3:00 AM CST forecast (same model, same window)

    Tailodds’ model gives the 237 departures scheduled from O'Hare 9 AM–noon Saturday an average 58% chance of leaving 15+ minutes late. With calm weather the same flights would average 21%. From the 4:00 AM CST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetORD departures 9 AM–noon 2026-11-14 (15+ min late)
    Probability (calibrated, mean per flight)58% over 237 flights
    Forecast cycle · horizonSat Nov 14, 4:00 AM CST · 4.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-14 10:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
    Was this useful?