What happened
AI-written · may contain mistakes. Written from the advisory text and weather only.
Cause: Low cloud ceilings and dense fog reduced visibility at the airport, so flights bound for San Francisco were held on the ground.
The ground stop began at 16:09 UTC on November 9, 2026, and ended at 17:09 UTC, after one hour. Departures were held from four air traffic control centers. Officials had rated the chance of an extension as medium, but the stop was lifted without being extended.
Impact by airline
Aircraft seen on the ground at SFO and holding nearby, by airline.
| Airline | On ground | Holding |
|---|---|---|
| United Airlines UA | 14 | — |
| Alaska Airlines AS | 6 | — |
| American Airlines AA | 5 | — |
| SkyWest Airlines OO | 5 | — |
| Air Canada AC | 2 | — |
| Horizon Air QX | 2 | — |
| Southwest Airlines WN | 2 | — |
| All Nippon Airways NH | 1 | — |
| Cathay Pacific CX | 1 | — |
| Delta Air Lines DL | 1 | — |
| EVA Air BR | 1 | — |
| Frontier Airlines F9 | 1 | — |
| JetBlue B6 | 1 | — |
| Korean Air KE | 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 44 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 9:15 am PST.
Chance of extension now medium.
Departures held from ZLA, ZLC, ZOA, ZSE.
Ground stop ended after 1 hr.
Advisories
The air traffic control advisories issued for this ground stop, as published.
ATCSCC ADVZY 054 SFO/ZOA 11/09/2026 CDM GROUND STOP
CTL ELEMENT: SFO ELEMENT TYPE: APT ADL TIME: 1606Z GROUND STOP PERIOD: 09/1556Z - 09/1715Z CUMULATIVE PROGRAM PERIOD: 09/1500Z - 09/2159Z DEP FACILITIES INCLUDED: (1stTier) ZLA ZLC ZOA ZSE PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 899 / 112 / 53 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1464 / 136 / 86 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / LOW CEILINGS COMMENTS: LOW VISIBILITY, CLEARING NOW EXPECTED CLOSER TO 1730Z, EXPECT GDP REVISION AS EXIT STRATEGY.Original advisory ↗