Ground stop at YYC (YYC), Oct 23, 2026

EndedSnow and ice briefly halt departures at YYC airport

Started: Fri, Oct 23, 2:08 PM UTC14:08 UTC
Ended: Fri, Oct 23, 2:29 PM UTC14:29 UTC
Duration: 21 min
Cause: snow or ice

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What happened

AI-written · may contain mistakes. Written from the advisory text and weather only.

Cause: Snow or ice at the airport led air traffic control to hold flights from other places before they could depart toward it.

The ground stop began at 14:08 UTC and was scheduled to run until 9:00 am Mountain time. It ended at 14:29 UTC, after 21 minutes. Departures were held from five air traffic control centers during that time.

Impact by airline

No airline data was collected for this ground stop.

Airline numbers appear after the first sample, within about 20 minutes of the start.

Impact by region

Air traffic control centers whose departures to the airport were held.

Center	Status
ZLC	Held
ZDV	Held
ZOA	Held
ZSE	Held
ZMP	Held

Timeline

Every change published while the ground stop was in effect, as seen each minute.

Oct 23, 2:08 PM UTC
Ground stop issued at YYC for snow/ice, until 9:00 am MDT. Departures held from ZLC, ZDV, ZOA, ZSE and 1 more.
Oct 23, 2:10 PM UTC
Reason changed to snow or ice.
Oct 23, 2:29 PM UTC
Ground stop ended after 21 min.

Advisories

The air traffic control advisories issued for this ground stop, as published.

Advisory 6006

CTL ELEMENT: CYYC
ELEMENT TYPE: APT
ADL TIME: 1403Z
GROUND STOP PERIOD: 23/1353Z - 23/1500Z
DEP FACILITIES INCLUDED: (2ndTier) CZW ZLC ZDV ZOA ZSE CZE ZMP CZV
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 0 / 0 / 0
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 306 / 63 / 31
PROBABILITY OF EXTENSION: MEDIUM
IMPACTING CONDITION: WEATHER / SNOW-ICE
COMMENTS:

Original advisory ↗

How it is measured

Status, timeline, cause and held centers: the national airspace status feed, checked every minute, and the air traffic control advisories it links to.
Delays by airline and region: departures and arrivals at YYC 30 or more minutes late, by their estimated delay against the schedule, sampled every 10 minutes while the stop is active and once more after it ends.
Totals and cancellations: arrival and departure boards for YYC, every 30 minutes while active and once more after the end. Delayed means 15 or more minutes late at YYC; cancelled is the airline's cancelled status; codeshares count once. Flights scheduled from the start until an hour after the end are counted.
Held at origin: the same arrivals boards, which carry each flight's scheduled and actual departure from its origin. A flight is held when it is still scheduled, not departed, 15 or more minutes past its scheduled departure at a sample taken during the stop. In scope: its origin is in a held center or listed facility; flights from elsewhere are late for other reasons.
Inbound in the air: the same arrivals boards. At each board taken during the stop, a flight to YYC is in the air when it has departed (en route, or with an actual departure time) and not landed, cancelled or diverted; one still shown in the air over an hour past its arrival estimate, or departed more than 18 hours earlier, is treated as stale and left out.
Diversions: an inbound flight marked diverted during the stop or the wrap-up after it (not one marked before it could have departed), or one still shown in the air 30+ minutes past its arrival estimate that ADS-B (by its ICAO call sign) then found on the ground at another airport, not its origin. The diversion airport is the airport ADS-B found it at, else the updated destination. Cancellations never count. Regional flights flown under another call sign can't be found on ADS-B, so their diversion airport may be unknown.
Aircraft on the ground and holding: ADS-B positions around YYC, every 5 minutes; the airline is read from the call sign. Holding counts airline flights only (passenger, regional and cargo), not private, military or medical flights.
Weather: METARs, SIGMETs and weather alerts.
News: headline links filtered to this airport and these days; we show titles and links only.

Data sources are listed on the credits page.