Partly stale · checked FAA NAS status 223 h staleForecast cycle 78 minLightning 223 h staleWeather observations no data staleFAA surface data 2 minFAA flight data 2 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.

Observed Significant Resolved Delay DCA departures

National departures running late: 67% left 15+ min late in the last hour

Current state
Resolved: closed without a new report (No usable measurement for 6 h; closed without a recovery report.)
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 Observed

    National departures running late: 67% left 15+ min late in the last hour

    Of 21 departures that took off between 6:05 PM and 7:05 PM EST, 14 left at least 15 minutes late. National typically sees 40% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 6 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window6:05 PM–7:05 PM EST
    Sample21 flights, 14 late (67%)
    Comparison40% typical · US DOT on-time data, last 12 published months, departures in the 6 PM hour
    Median delay33.0 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 00:05 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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Closed Fri Nov 13, 5:33 AM EST: No usable measurement for 6 h; closed without a recovery report.