tailodds FORECAST
Partly stale · checked FAA NAS status 222 h staleForecast cycle 71 minLightning 222 h staleWeather observations no data staleFAA surface data 2 minFAA flight data 4 min

FAA NAS status is stale (222 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (222 h old). Lightning items are paused; thunderstorm items still come from official observations.

Weather observations is stale. Weather items are paused until it is fresh again; missing observations never end a weather event.

Observed Major Developing Delay MDW departures

Midway departure delays worsen: 92% late in the last hour

Current state
Developing
Started
Latest activity
Updates
2
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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 Observed

    Midway departures running late: 50% left 15+ min late in the last hour

    Of 20 departures that took off between 1:17 PM and 2:17 PM CST, 10 left at least 15 minutes late. Midway typically sees 24% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 1 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window1:17 PM–2:17 PM CST
    Sample20 flights, 10 late (50%)
    Comparison24% typical · US DOT on-time data, last 12 published months, departures in the 1 PM hour
    Median delay17.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-12 20:17 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  2. Escalation Observed

    Midway departure delays worsen: 92% late in the last hour

    What changed: late share 50% → 92%

    Of 12 departures that took off between 10:06 PM and 11:06 PM CST, 11 left at least 15 minutes late. Midway typically sees 55% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 10 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window10:06 PM–11:06 PM CST
    Sample12 flights, 11 late (92%)
    Comparison55% typical · US DOT on-time data, last 12 published months, departures in the 10 PM hour
    Median delay46.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-13 05:06 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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