tailodds FORECAST
Partly stale · checked FAA NAS status 225 h staleForecast cycle 2 hLightning 225 h staleWeather observations no data staleFAA surface data 5 minFAA flight data 6 min

FAA NAS status is stale (225 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (225 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 Significant Resolved Delay BNA departures

Model raises Nashville departure delay risk 9 PM–midnight Monday to 55%

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 BNAFlights at BNA

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 44% delay risk for Nashville departures 9 PM–midnight Monday

    Tailodds’ model gives the 25 departures scheduled from Nashville 9 PM–midnight Monday an average 44% chance of leaving 15+ minutes late. With calm weather the same flights would average 27%. From the 10:00 AM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetBNA departures 9 PM–midnight 2026-10-19 (15+ min late)
    Probability (calibrated, mean per flight)44% over 25 flights
    Forecast cycle · horizonMon Oct 19, 10:00 AM CDT · 10.0 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-19 15:57 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 Nashville departure delay risk 9 PM–midnight Monday to 55%

    What changed: 44% → 55% since the 10:00 AM CDT forecast (same model, same window)

    Tailodds’ model gives the 26 departures scheduled from Nashville 9 PM–midnight Monday an average 55% chance of leaving 15+ minutes late. With calm weather the same flights would average 26%. From the 7:00 PM CDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetBNA departures 9 PM–midnight 2026-10-19 (15+ min late)
    Probability (calibrated, mean per flight)55% over 26 flights
    Forecast cycle · horizonMon Oct 19, 7:00 PM CDT · 0.6 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-10-20 01:26 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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Closed Mon Oct 19, 9:01 PM CDT: The forecast window has started; measured delays are reported separately as observed items.