What changed: airport closure no longer listed
\n \nThe airport closure at Orange County (SNA) no longer appears in the FAA’s airport status as of 6:14 AM PST, in 3 consecutive successful checks. It was first listed at 12:00 AM PST.
\n \n \n \nThe FAA’s airport status lists a closure at Orange County (SNA) until 6:15 AM PST.
\n \n \n \nWhat changed: about 11 → 15 expected cancellations since the 7:00 PM PST forecast
\n \nAdding up each flight’s cancellation probability, Tailodds’ model expects about 15 of the 32 departures scheduled 6–9 AM Saturday to be cancelled (46%). With calm weather it would expect about 0. From the 8:00 PM 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.
\n \nExpected ~15 cancellationsHorizon 9.0 hModel famB-sd-v4iModel changed
\n \n \n \nAdding up each flight’s cancellation probability, Tailodds’ model expects about 11 of the 32 departures scheduled 6–9 AM Saturday to be cancelled (36%). With calm weather it would expect about 0. From the 7:00 PM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of cancellations.
\n \nExpected ~11 cancellationsHorizon 10.0 hModel famA-fc-v3+famB-sd-v4i
\n \n \n \nThe 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.
\n \n \nThe 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.
\n \n \nWhat changed: airport closure no longer listed
\n \nThe airport closure at Orange County (SNA) no longer appears in the FAA’s airport status as of 3:27 PM PST, in 3 consecutive successful checks. It was first listed at 11:30 PM PST.
\n \n \n \nWhat changed: 48% → 83% since the 7:00 PM PST forecast (model changed)
\n \nTailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Friday an average 83% chance of leaving 15+ minutes late. With calm weather the same flights would average 42%. 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.
\n \nProbability 83%Horizon 4.1 hModel famB-sd-v4iModel changed
\n \n \n \nWhat changed: 51% → 87% since the 4:00 PM PST forecast (model changed)
\n \nTailodds’ model gives the 25 departures scheduled from Orange County 3–6 PM Friday an average 87% chance of leaving 15+ minutes late. With calm weather the same flights would average 47%. 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.
\n \nProbability 87%Horizon 1.1 hModel famB-sd-v4iModel changed
\n \n \n \nThe 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.
\n \n \nThe 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.
\n \n \nWhat changed: end 6:15 AM PST → 6:15 AM PST
\n \nThe FAA’s airport status lists a closure at Orange County (SNA) until 6:15 AM PST.
\n \n \n \nTailodds’ model gives the 42 departures scheduled from Orange County noon–3 PM Friday an average 46% chance of leaving 15+ minutes late. With calm weather the same flights would average 30%. From the 11:00 PM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 46%Horizon 11.5 hModel famA-fc-v3+famB-sd-v4i
\n \n \n \nTailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Friday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 32%. From the 7:00 PM PST forecast (model famA-fc-v3). This is a forecast, not a report of delays.
\n \nProbability 48%Horizon 22.1 hModel famA-fc-v3
\n \n \n \nOf 12 departures that took off between 6:40 PM and 7:40 PM PST, 6 left at least 15 minutes late. Orange County typically sees 25% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 7 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
\n \nWindow 6:40 PM–7:40 PM PSTSample 12 flightsLate 50%Typical 25%
\n \n \nTailodds’ model gives the 24 departures scheduled from Orange County 3–6 PM Friday an average 51% chance of leaving 15+ minutes late. With calm weather the same flights would average 32%. From the 4:00 PM PST forecast (model famA-fc-v3). This is a forecast, not a report of delays.
\n \nProbability 51%Horizon 21.5 hModel famA-fc-v3
\n \n \n \nOf 13 departures that took off between 1:17 PM and 2:17 PM PST, 7 left at least 15 minutes late. Orange County typically sees 26% 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.
\n \nWindow 1:17 PM–2:17 PM PSTSample 13 flightsLate 54%Typical 26%
\n \n \nTailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Monday an average 42% chance of leaving 15+ minutes late. With calm weather the same flights would average 25%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 42%Horizon 5.0 hModel famB-sd-v4i
\n \n \n \nTailodds’ model gives the 26 departures scheduled from Orange County 3–6 PM Monday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 28%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 45%Horizon 2.0 hModel famB-sd-v4i
\n \n \n \nOf 13 departures that took off between 12:14 PM and 1:14 PM PST, 7 left at least 15 minutes late. Orange County typically sees 23% 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.
\n \nWindow 12:14 PM–1:14 PM PSTSample 13 flightsLate 54%Typical 23%
\n \n \nTailodds’ model gives the 45 departures scheduled from Orange County 6–9 PM Friday an average 55% chance of leaving 15+ minutes late. With calm weather the same flights would average 39%. From the 2:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 55%Horizon 3.1 hModel famB-sd-v4i
\n \n \n \nTailodds’ model gives the 27 departures scheduled from Orange County 6–9 PM Tuesday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 30%. From the 3:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 45%Horizon 2.0 hModel famB-sd-v4i
\n \n \n \nThe FAA’s airport status lists a closure at Orange County (SNA) until 6:15 AM PST.
\n \n \n \nTailodds’ model gives the 41 departures scheduled from Orange County 6–9 PM Monday an average 46% chance of leaving 15+ minutes late. With calm weather the same flights would average 31%. From the 1:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 46%Horizon 4.0 hModel famB-sd-v4i
\n \n \n \nTailodds’ model gives the 38 departures scheduled from Orange County 3–6 PM Monday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 31%. From the 9:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
\n \nProbability 48%Horizon 5.0 hModel famB-sd-v4i
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