What happened
Cause: Thunderstorms near LaGuardia led air traffic control to hold departures from the airport while the storms were active.
A ground stop at LaGuardia began at 21:45 UTC on November 12 and held departures from one air traffic control center. At 22:17 UTC it was extended, with the planned end moved to 6:30 pm Eastern time. The stop ended at 23:25 UTC, after 1 hour 40 minutes.
Impact by airline
- Delayed 30+ min
- 99
- Arrivals / departures
- 59 / 40
| Airline | Delayed | Avg delay | On ground | Holding |
|---|---|---|---|---|
| Delta Air Lines DL | 25 | 131 min | 5 | — |
| Republic Airways YX | 19 | 129 min | 3 | — |
| American Airlines AA | 17 | 142 min | 4 | — |
| Endeavor Air 9E | 14 | 187 min | 5 | — |
| Southwest Airlines WN | 10 | 101 min | 2 | — |
| United Airlines UA | 9 | 117 min | 2 | — |
| Porter Airlines PD | 2 | 103 min | — | — |
| JetBlue B6 | 1 | 58 min | 1 | — |
| Mesa Airlines YV | 1 | 275 min | — | — |
| Jazz QK | 1 | 72 min | — | — |
Delayed 30+ minOn ground / holding: most seen at once.
Held at origin
- Held at origin
- 0
- Average held
- —
- Longest
- —
No inbound flight has been seen held at its origin during this stop.
Inbound in the air and diversions
- Diverted
- 0
Diversions
No inbound flight has been seen diverting during this stop.
Impact by region
| Center | Status | Delayed |
|---|---|---|
| Washington Center (ZDC) | Held | 6 |
| Chicago Center (ZAU) | Not held | 8 |
| Outside the US centers | Not held | 7 |
| Miami Center (ZMA) | Not held | 7 |
| Atlanta Center (ZTL) | Not held | 6 |
| Fort Worth Center (ZFW) | Not held | 4 |
| Jacksonville Center (ZJX) | Not held | 4 |
| Boston Center (ZBW) | Not held | 3 |
| Denver Center (ZDV) | Not held | 3 |
| Houston Center (ZHU) | Not held | 3 |
| Indianapolis Center (ZID) | Not held | 2 |
| Kansas City Center (ZKC) | Not held | 2 |
| Minneapolis Center (ZMP) | Not held | 2 |
| Cleveland Center (ZOB) | Not held | 2 |
Aircraft at the airport
On the ground Holding nearby
Timeline
Ground stop issued at LGA for thunderstorms, until 5:30 pm EST. Departures held from ZDC.
New advisory issued.
Read the advisory ↗Reason changed to thunderstorms.
Extended until 6:30 pm EST.
New advisory issued.
Read the advisory ↗Reason changed to thunderstorms.
Ground stop ended after 1 hr 40 min.
Advisories
ATCSCC ADVZY 140 LGA/ZNY 11/12/2026 CDM GROUND STOP
CTL ELEMENT: LGA ELEMENT TYPE: APT ADL TIME: 2214Z GROUND STOP PERIOD: 12/2132Z - 12/2330Z CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z DEP FACILITIES INCLUDED: (Manual) ZDC PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 1275 / 254 / 80 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1995 / 314 / 125 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / THUNDERSTORMS COMMENTS:Original advisory ↗
ATCSCC ADVZY 128 LGA/ZNY 11/12/2026 CDM GROUND STOP
CTL ELEMENT: LGA ELEMENT TYPE: APT ADL TIME: 2142Z GROUND STOP PERIOD: 12/2132Z - 12/2230Z CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z DEP FACILITIES INCLUDED: (Manual) ZDC PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 406 / 209 / 68 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 644 / 254 / 107 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / THUNDERSTORMS COMMENTS:Original advisory ↗
ATCSCC ADVZY 095 LGA/ZNY 11/12/2026 CDM GROUND STOP
CTL ELEMENT: LGA ELEMENT TYPE: APT ADL TIME: 2000Z GROUND STOP PERIOD: 12/1950Z - 12/2045Z CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z DEP FACILITIES INCLUDED: (Manual) ZTL ZDC ZNY ZJX ZOB ZBW ZMA CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 391 / 156 / 78 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 524 / 197 / 105 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / THUNDERSTORMS COMMENTS: REVISED TO INCLUDE ZJX AND ZMAOriginal advisory ↗