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Forecast Significant Developing Delay LAS departures

Model lowers Las Vegas departure delay risk 9 AM–noon Sunday to 45%

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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.

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  1. Initial Forecast

    Model forecasts 45% delay risk for Las Vegas departures 9 AM–noon Sunday

    Tailodds’ model gives the 114 departures scheduled from Las Vegas 9 AM–noon Sunday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 10:00 PM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetLAS departures 9 AM–noon 2026-11-15 (15+ min late)
    Probability (calibrated, mean per flight)45% over 114 flights
    Forecast cycle · horizonSat Nov 14, 10:00 PM PST · 9.6 h ahead
    Model versionfamA-fc-v3+famB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-15 07:26 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  2. Escalation Forecast

    Updated model puts Las Vegas departure delay risk 9 AM–noon Sunday at 55%

    What changed: 45% → 55% since the 10:00 PM PST forecast (model changed)

    Tailodds’ model gives the 115 departures scheduled from Las Vegas 9 AM–noon Sunday an average 55% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 12:00 AM PST forecast (model famB-sd-v4i). The model changed since the previous item (from famA-fc-v3+famB-sd-v4i), so some or all of this change comes from the new model rather than new information. This is a forecast, not a report of delays.

    Evidence for this update
    TargetLAS departures 9 AM–noon 2026-11-15 (15+ min late)
    Probability (calibrated, mean per flight)55% over 115 flights
    Forecast cycle · horizonSun Nov 15, 12:00 AM PST · 8.1 h ahead
    Model versionfamB-sd-v4i (changed since the previous update)
    Source event time
    Ingested
    Published here (2026-11-15 08:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  3. De-escalation Forecast

    Model lowers Las Vegas departure delay risk 9 AM–noon Sunday to 55%

    What changed: 55% → 55% since the 12:00 AM PST forecast (same model, same window)

    Tailodds’ model gives the 115 departures scheduled from Las Vegas 9 AM–noon Sunday an average 55% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 1:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetLAS departures 9 AM–noon 2026-11-15 (15+ min late)
    Probability (calibrated, mean per flight)55% over 115 flights
    Forecast cycle · horizonSun Nov 15, 1:00 AM PST · 7.0 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-15 09:58 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  4. Escalation Forecast

    Model raises Las Vegas departure delay risk 9 AM–noon Sunday to 60%

    What changed: 55% → 60% since the 1:00 AM PST forecast (same model, same window)

    Tailodds’ model gives the 115 departures scheduled from Las Vegas 9 AM–noon Sunday an average 60% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 2:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetLAS departures 9 AM–noon 2026-11-15 (15+ min late)
    Probability (calibrated, mean per flight)60% over 115 flights
    Forecast cycle · horizonSun Nov 15, 2:00 AM PST · 6.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-15 10:55 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
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  5. De-escalation Forecast

    Model lowers Las Vegas departure delay risk 9 AM–noon Sunday to 45%

    What changed: 60% → 45% since the 2:00 AM PST forecast (same model, same window)

    Tailodds’ model gives the 115 departures scheduled from Las Vegas 9 AM–noon Sunday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 3:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.

    Evidence for this update
    TargetLAS departures 9 AM–noon 2026-11-15 (15+ min late)
    Probability (calibrated, mean per flight)45% over 115 flights
    Forecast cycle · horizonSun Nov 15, 3:00 AM PST · 5.1 h ahead
    Model versionfamB-sd-v4i
    Source event time
    Ingested
    Published here (2026-11-15 11:56 UTC)
    SourcesTailodds forecast
    Provenanceforecast_blocks forecast-blocks-v1 · config 2026-10-17.1 · writer template-v1
    Was this useful?