tailodds FORECAST
Partly stale · checked FAA NAS status 223 h staleForecast cycle 78 minLightning 223 h staleWeather observations no data staleFAA surface data 7 minFAA flight data 6 min

FAA NAS status is stale (223 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (223 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 DCA departures

Model forecasts 43% delay risk for National departures 9 PM–midnight Thursday

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
1
Create monitor View DCAFlights at DCA

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 43% delay risk for National departures 9 PM–midnight Thursday

    Tailodds’ model gives the 27 departures scheduled from National 9 PM–midnight Thursday an average 43% chance of leaving 15+ minutes late. With calm weather the same flights would average 22%. From the 3:00 PM EST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetDCA departures 9 PM–midnight 2026-11-12 (15+ min late)
    Probability (calibrated, mean per flight)43% over 27 flights
    Forecast cycle · horizonThu Nov 12, 3:00 PM EST · 5.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-12 20:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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Closed Thu Nov 12, 9:00 PM EST: The forecast window has started; measured delays are reported separately as observed items.