Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.
Live · checked FAA national advisories 5 minFAA NAS status 2 minForecast cycle 1 hLightning 1 minWeather observations 1 minFAA surface data 6 minFAA flight data 7 min
Adding up each flight’s cancellation probability, Tailodds’ model expects about 6 of the 33 departures scheduled 6–9 AM Saturday to be cancelled (17%). With calm weather it would expect about 0. From the 8:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.
The FAA issued this advisory: “EVENT TIME: 14/0116 - 14/0130 DESTINATION AIRPORT:ALL FACILITIES INCLUDED: ALL EXPECT UPDATE:0400Z REASON: REMARKS: THE FAA COMMAND CENTER NATIONWIDE GROUND STOP HAS BEEN CANCELLED.” This is an advisory bulletin; its text defines the affected flights and time period.
The FAA issued this advisory: “EVENT TIME: 13/2245 - 14/0400 DESTINATION AIRPORT:ALL FACILITIES INCLUDED: ALL EXPECT UPDATE:0400Z REASON: COMMUNICATIONS FAILURE REMARKS: THE FAA COMMAND CENTER GROUND STOP REMAINS IN EFFECT. AS ENROUTE FACILITIES RECOVER, FLIGHTS WILL BE ALLOWED TO DEPART THROUGH COORDINATION WITH THE AIR TRAFFIC CONTROL SYSTEM COMMAND CENTER.” This is an advisory bulletin; its text defines the affected flights and time period.
▲ 51% → 84% since the 7:00 PM PST forecast (model changed)
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Tailodds’ model gives the 21 departures scheduled from San Jose 6–9 PM Friday an average 84% chance of leaving 15+ minutes late. With calm weather the same flights would average 44%. From the 1:00 PM PST forecast (model famB-sd-v4i). The model changed since the previous item (from famA-fc-v3), 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.
▲ 57% → 84% since the 12:00 PM PST forecast (same model, same window)
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Tailodds’ model gives the 27 departures scheduled from San Jose 3–6 PM Friday an average 84% chance of leaving 15+ minutes late. With calm weather the same flights would average 44%. From the 1:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
The FAA issued this advisory: “EVENT TIME: 13/2053 - 14/0400 DUE TO EXTRAORDINARY CIRCUMSTANCES AND FOR REASONS OF SAFETY. ATTENTION ALL AIRCRAFT OPERATORS, BY ORDER OF THE FEDERAL AVIATION COMMAND CENTER ALL AIRPORTS ARE GROUND STOPPED. ALL DEPARTING TRAFFIC SHOULD REMAIN GROUND STOPPED UNTIL FURTHER NOTICE. INBOUND INTERNATIONAL FLIGHTS WILL BE MANAGED ON A CASE BY CASE BASIS.” This is an advisory bulletin; its text defines the affected flights and time period.
The FAA issued this advisory: “EVENT TIME: 13/2030 - 14/0500 THE ATCSCC HAS ACTIVATED THE DIVERSION RECOVERY TOOL FOR ALL AIRPORTS. CUSTOMERS SHOULD ENSURE THAT DVRSN IS INCLUDED IN FLIGHT PLAN REMARKS OF DIVERTED AIRCRAFT. NOTE THAT IF THERE IS A GROUND DELAY PROGRAM OR GROUND STOP IN EFFECT FOR THE DESTINATION AIRPORT DIVERTED FLIGHTS ARE NOT AUTOMATICALLY EXEMPT AND WILL STILL RECEIVE AN EDCT. UNLESS OTHERWISE NOTIFIED, DIVERSION RECOVERY WILL CLOSE AT THE END OF THE EVENT TIME SPECIFIED IN THIS ADVISORY.” This is an advisory bulletin; its text defines the affected flights and time period.
Tailodds’ model gives the 32 departures scheduled from San Jose noon–3 PM Friday an average 43% chance of leaving 15+ minutes late. With calm weather the same flights would average 26%. From the 11:00 PM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of delays.
Of 13 arrivals that landed between 9:52 PM and 10:52 PM PST, 7 reached the gate at least 15 minutes late. Typically 19% of arrivals at San Jose arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Of 12 departures that took off between 12:39 PM and 1:39 PM PST, 6 left at least 15 minutes late. San Jose typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 1 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Tailodds’ model gives the 21 departures scheduled from San Jose 6–9 PM Thursday an average 50% chance of leaving 15+ minutes late. With calm weather the same flights would average 34%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 27 departures scheduled from San Jose 3–6 PM Thursday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 31%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 12 departures that took off between 12:40 PM and 1:40 PM PST, 5 left at least 15 minutes late. San Jose typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 1 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Tailodds’ model gives the 20 departures scheduled from San Jose 6–9 PM Monday an average 43% chance of leaving 15+ minutes late. With calm weather the same flights would average 27%. From the 9:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 41 departures scheduled from San Jose 3–6 PM Friday an average 57% chance of leaving 15+ minutes late. With calm weather the same flights would average 41%. From the 1:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 12 departures that took off between 12:50 PM and 1:50 PM PST, 5 left at least 15 minutes late. San Jose typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 1 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Tailodds’ model gives the 40 departures scheduled from San Jose 3–6 PM Monday an average 46% chance of leaving 15+ minutes late. With calm weather the same flights would average 30%. From the 10:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 53 departures scheduled from San Jose noon–3 PM Monday an average 47% chance of leaving 15+ minutes late. With calm weather the same flights would average 29%. From the 10:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 12 departures that took off between 12:27 PM and 1:27 PM PST, 5 left at least 15 minutes late. San Jose typically sees 18% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 12 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Tailodds’ model gives the 26 departures scheduled from San Jose 6–9 PM Friday an average 51% chance of leaving 15+ minutes late. With calm weather the same flights would average 34%. From the 1:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 23 departures scheduled from San Jose 3–6 PM Friday an average 50% chance of leaving 15+ minutes late. With calm weather the same flights would average 33%. From the 1:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 28 departures scheduled from San Jose 6–9 PM Thursday an average 50% chance of leaving 15+ minutes late. With calm weather the same flights would average 32%. From the 4:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 14 departures that took off between 1:11 PM and 2:11 PM PDT, 6 left at least 15 minutes late. San Jose typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 1 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
Tailodds’ model gives the 23 departures scheduled from San Jose 3–6 PM Thursday an average 44% chance of leaving 15+ minutes late. With calm weather the same flights would average 29%. From the 1:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 14 departures that took off between 2:15 PM and 3:15 PM PDT, 8 left at least 15 minutes late. San Jose typically sees 27% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 2 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
1 update · Source: Tailodds measurement of FAA flight data against airline schedulesOpen event ›View SJC
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Confirmed
An official source (the FAA) reports it. We attribute it; we don’t independently verify it.
Observed
We measured it from FAA flight data: window, sample size and the typical level are on the item.
Forecast
Our model predicts it, with its probability, target, horizon and model version. It has not happened. How accurate is it?