tailodds FORECAST
Partly stale · checked FAA NAS status 222 h staleForecast cycle 64 minLightning 222 h staleWeather observations no data staleFAA surface data 2 minFAA flight data 3 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.

Forecast Major Resolved Delay STL departures

Model raises St Louis departure delay risk 9 PM–midnight Monday to 67%

Current state
Resolved: closed without a new report (The forecast window has started; measured delays are reported separately as observed items.)
Started
Latest activity
Updates
2
Create monitor View STLFlights at STL

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 53% delay risk for St Louis departures 9 PM–midnight Monday

    Tailodds’ model gives the 15 departures scheduled from St Louis 9 PM–midnight Monday an average 53% chance of leaving 15+ minutes late. With calm weather the same flights would average 35%. From the 1:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-11-09 (15+ min late)
    Probability (calibrated, mean per flight)53% over 15 flights
    Forecast cycle · horizonMon Nov 9, 1:00 PM CST · 6.5 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-09 20:28 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 Monday to 67%

    What changed: 53% → 67% since the 1:00 PM CST forecast (same model, same window)

    Tailodds’ model gives the 15 departures scheduled from St Louis 9 PM–midnight Monday an average 67% chance of leaving 15+ minutes late. With calm weather the same flights would average 39%. From the 7:00 PM CST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetSTL departures 9 PM–midnight 2026-11-09 (15+ min late)
    Probability (calibrated, mean per flight)67% over 15 flights
    Forecast cycle · horizonMon Nov 9, 7:00 PM CST · 0.6 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-10 02:26 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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Closed Mon Nov 9, 9:01 PM CST: The forecast window has started; measured delays are reported separately as observed items.