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Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.

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Departures: events affecting flights leaving the airport. Arrivals: flights going to it.

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“Today” and dates above start at midnight in this zone. Each item shows its airport’s local time; hover a time for UTC.

Clear
Type: Cancellation ×Airport: SFO × Clear filters
PST, Nov 14 26 min ago
Forecast Significant New Cancellation SFO departures

Model expects about 6 cancellations among SFO departures 3–6 PM Saturday

Adding up each flight’s cancellation probability, Tailodds’ model expects about 6 of the 77 departures scheduled 3–6 PM Saturday to be cancelled (8%). With calm weather it would expect about 1. From the 4:00 AM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~6 cancellationsHorizon 9.6 hModel famA-fc-v3+famB-sd-v4i

Source: Tailodds forecast Timeline (1) View SFO
PST, Nov 14 26 min ago
Forecast Significant Developing Escalation Cancellation SFO departures

Updated model now expects about 10 among SFO departures noon–3 PM Saturday

What changed: about 5 → 10 expected cancellations since the 12:00 AM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 10 of the 107 departures scheduled noon–3 PM Saturday to be cancelled (9%). With calm weather it would expect about 1. From the 4:00 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 cancellations.

Expected ~10 cancellationsHorizon 6.6 hModel famB-sd-v4iModel changed

Source: Tailodds forecast Timeline (3) 2 earlier matching updates View SFO
PST, Nov 14 26 min ago
Forecast Major Developing Escalation Cancellation SFO departures

Model raises expected cancellations to about 13 among SFO departures 9 AM–noon Saturday

What changed: about 6 → 13 expected cancellations since the 3:00 AM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 13 of the 104 departures scheduled 9 AM–noon Saturday to be cancelled (12%). With calm weather it would expect about 1. From the 4:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~13 cancellationsHorizon 3.6 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View SFO
PST, Nov 14 26 min ago
Forecast Major Developing Escalation Cancellation SFO departures

Model raises expected cancellations to about 11 among SFO departures 6–9 AM Saturday

What changed: about 7 → 11 expected cancellations since the 2:00 AM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 11 of the 92 departures scheduled 6–9 AM Saturday to be cancelled (12%). With calm weather it would expect about 1. From the 4:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~11 cancellationsHorizon 0.6 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View SFO
PST, Nov 13 8 h ago
Forecast Major Resolved Escalation Cancellation SFO departures

Model raises expected cancellations to about 10 among SFO departures midnight–3 AM Saturday

What changed: about 5 → 10 expected cancellations since the 7:00 PM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 10 of the 23 departures scheduled midnight–3 AM Saturday to be cancelled (43%). 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.

Expected ~10 cancellationsHorizon 3.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (2) 1 earlier matching update View SFO
PST, Nov 13 8 h ago
Forecast Major Resolved Escalation Cancellation SFO departures

Model raises expected cancellations to about 66 among SFO departures 9 PM–midnight Friday

What changed: about 58 → 66 expected cancellations since the 6:00 PM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 66 of the 85 departures scheduled 9 PM–midnight Friday to be cancelled (78%). With calm weather it would expect about 2. From the 8:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~66 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (6) 5 earlier matching updates View SFO
PST, Nov 13 12 h ago
Forecast Major Resolved Escalation Cancellation SFO departures

Model raises expected cancellations to about 57 among SFO departures 6–9 PM Friday

What changed: about 36 → 57 expected cancellations since the 3:00 PM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 57 of the 82 departures scheduled 6–9 PM Friday to be cancelled (69%). With calm weather it would expect about 1. From the 4:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~57 cancellationsHorizon 0.5 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (4) 3 earlier matching updates View SFO
PST, Nov 13 14 h ago
Forecast Major Resolved Escalation Cancellation SFO departures

Model raises expected cancellations to about 54 among SFO departures 3–6 PM Friday

What changed: about 41 → 54 expected cancellations since the 1:00 PM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 54 of the 100 departures scheduled 3–6 PM Friday to be cancelled (54%). With calm weather it would expect about 6. From the 2:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of cancellations.

Expected ~54 cancellationsHorizon 0.0 hModel famB-sd-v4i

Source: Tailodds forecast Timeline (7) 6 earlier matching updates View SFO
PST, Nov 13 23 h ago
Forecast Significant Resolved De-escalation Cancellation SFO departures

Updated model now expects about 7 among SFO departures noon–3 PM Friday

What changed: about 10 → 7 expected cancellations since the 1:00 PM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 7 of the 121 departures scheduled noon–3 PM Friday to be cancelled (6%). With calm weather it would expect about 1. From the 5:00 AM 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 cancellations.

Expected ~7 cancellationsHorizon 5.6 hModel famB-sd-v4iModel changed

Source: Tailodds forecast Timeline (2) 1 earlier matching update View SFO
PST, Nov 13 23 h ago
Forecast Significant Resolved De-escalation Cancellation SFO departures

Updated model now expects about 5 among SFO departures 9 AM–noon Friday

What changed: about 8 → 5 expected cancellations since the 10:00 AM PST forecast

Adding up each flight’s cancellation probability, Tailodds’ model expects about 5 of the 107 departures scheduled 9 AM–noon Friday to be cancelled (4%). With calm weather it would expect about 1. From the 5:00 AM 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 cancellations.

Expected ~5 cancellationsHorizon 2.6 hModel famB-sd-v4iModel changed

Source: Tailodds forecast Timeline (2) 1 earlier matching update View SFO

Each item is the latest update matching your filters; the event’s current status is on its chip. All updates shows the full chronological wire.

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?

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