Ground stop at New York LaGuardia (LGA), Nov 12, 2026

EndedThunderstorms halt LaGuardia departures for 1 hour 16 minutes

Started: Thu, Nov 12, 12:30 PM EST17:30 UTC
Ended: Thu, Nov 12, 1:46 PM EST18:46 UTC
Duration: 1 hr 16 min
Cause: thunderstorms

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What happened

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

Cause: Thunderstorms with a tornado warning over the airport led air traffic control to hold flights bound for LaGuardia on the ground.

The ground stop began at 17:30 UTC on November 12, 2026, and was set to run until 1:45 pm Eastern. Departures were held from two air traffic control centers. It ended at 18:46 UTC, after 1 hour 16 minutes, and the stop period was not extended.

Impact by airline

Aircraft seen on the ground at LGA and holding nearby, by airline.

Airline	On ground	Holding
Delta Air Lines DL	5	—
Republic Airways YX	5	—
American Airlines AA	4	—
Endeavor Air 9E	4	—
JetBlue B6	2	—
Jazz QK	2	—
United Airlines UA	2	—
Southwest Airlines WN	1	—

Impact by region

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

Center	Status
Washington Center (ZDC)	Held
Cleveland Center (ZOB)	Held

Aircraft at the airport

Peak 19 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.

Nov 12, 12:30 PM EST
Ground stop issued at LGA for thunderstorms, until 1:45 pm EST. Departures held from ZDC, ZOB.
Nov 12, 12:32 PM EST
Reason changed to thunderstorms.
Nov 12, 1:46 PM EST
Ground stop ended after 1 hr 16 min.

Advisories

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

ATCSCC ADVZY 059 LGA/ZNY 11/12/2026 CDM GROUND STOP

CTL ELEMENT: LGA
ELEMENT TYPE: APT
ADL TIME: 1724Z
GROUND STOP PERIOD: 12/1704Z - 12/1845Z
CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z
DEP FACILITIES INCLUDED: (Manual) ZDC ZOB
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 85 / 49 / 14
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 534 / 122 / 89
PROBABILITY OF EXTENSION: MEDIUM
IMPACTING CONDITION: WEATHER / THUNDERSTORMS
COMMENTS: NO ROUTES.

Original advisory ↗

Where flights were held

Departures to LGA were held from 2 centers (Manual).

Chance of extension: MEDIUM

Weather at the time

METAR, weather alerts and SIGMETs at the airport during the stop.

When it started

IFR

SPECI KLGA 121706Z 10016G24KT 2 1/2SM RA FEW010 OVC022CB 15/11 A2951 RMK AO2 SFC VIS 3 CB S MOV N P0004 T01500111 $ · observed Nov 12, 12:06 PM EST

Over the airport: Convective SIGMET 55E.

Latest during the stop

MVFR

SPECI KLGA 121819Z 07017G24KT 3SM -TSRA BR SCT016 BKN032CB OVC055 13/11 A2947 RMK AO2 SFC VIS 4 OCNL LTGIC OHD-S TS OHD-S MOV N P0006 T01280111 $ · observed Nov 12, 1:19 PM EST

Tornado Warning · Tornado Warning issued November 12 at 1:40PM EST until November 12 at 2:00PM EST by NWS Upton NY

Over the airport: Convective SIGMET 59E.

New York LaGuardia (LGA) live status →Every ground stop at LGA →Replay Nov 12, 2026 on the map →Read the full advisory ↗What is a ground stop? →

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 LGA 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 LGA, every 30 minutes while active and once more after the end. Delayed means 15 or more minutes late at LGA; 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 LGA 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 LGA, 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.