What happened
AI-written · may contain mistakes. Written from the advisory text and weather only.
Cause: Clouds sat very low over San Francisco airport, with a few reported around 200 feet, so air traffic control held departures bound there.
The ground stop began at 20:47 UTC and was set to run until 22:00 UTC, which is 2:00 pm Pacific time. It ended at 21:11 UTC after 24 minutes and was not extended. Departures were held from four air traffic control centers, and aircraft equipped for low-visibility landings were released from the stop.
Impact by airline
Aircraft seen on the ground at SFO and holding nearby, by airline.
| Airline | On ground | Holding |
|---|---|---|
| American Airlines AA | 5 | — |
| United Airlines UA | 5 | — |
| JetBlue B6 | 3 | — |
| Delta Air Lines DL | 2 | — |
| Southwest Airlines WN | 2 | — |
| Air France AF | 1 | — |
| Lufthansa LH | 1 | — |
| Frontier Airlines F9 | 1 | — |
| Japan Airlines JL | 1 | — |
| Porter Airlines PD | 1 | — |
| Horizon Air QX | 1 | — |
Impact by region
Air traffic control centers whose departures to the airport were held.
| Center | Status |
|---|---|
| Los Angeles Center (ZLA) | Held |
| Salt Lake City Center (ZLC) | Held |
| Oakland Center (ZOA) | Held |
| Seattle Center (ZSE) | Held |
Aircraft at the airport
Peak 25 on the ground, 0 holding nearby.
On the ground Holding nearby
Timeline
Every change published while the ground stop was in effect, as seen each minute.
Ground stop issued at SFO for low ceilings, until 2:00 pm PST. Departures held from ZLA, ZLC, ZOA, ZSE.
Ground stop ended after 24 min.
Advisories
The air traffic control advisories issued for this ground stop, as published.
ATCSCC ADVZY 070 SFO/ZOA 11/09/2026 CDM GROUND STOP
CTL ELEMENT: SFO ELEMENT TYPE: APT ADL TIME: 2041Z GROUND STOP PERIOD: 09/1939Z - 09/2200Z CUMULATIVE PROGRAM PERIOD: 09/1500Z - 09/2159Z DEP FACILITIES INCLUDED: (1stTier) ZLA ZLC ZOA ZSE PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 8013 / 361 / 116 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 11469 / 437 / 166 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / LOW CEILINGS COMMENTS: AIRCRAFT THAT ARE CAT 3 ILS CAPABLE WILL BE RELEASED FROM STOP. PLEASE CALL TCA FOR REQUESTS.Original advisory ↗