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

EndedThunderstorms halt LaGuardia departures for 1 hour 39 minutes

Started: Thu, Nov 12, 1:59 PM EST18:59 UTC
Ended: Thu, Nov 12, 3:38 PM EST20:38 UTC
Duration: 1 hr 39 min
Cause: thunderstorms; Extended 1 time

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What happened

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

Cause: Thunderstorms at LaGuardia, including heavy rain and lightning, led air traffic control to hold departures so planes would not take off into dangerous weather.

The ground stop began at 18:59 UTC and was first set to last until 3:00 pm EST. At 19:57 UTC it was extended to 3:45 pm EST, and departures were also held from more air traffic control centers. The stop ended at 20:38 UTC, after 1 hour 39 minutes.

Impact by airline

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

Airline	On ground	Holding
Republic Airways YX	6	—
Endeavor Air 9E	3	—
American Airlines AA	2	—
Delta Air Lines DL	2	—
United Airlines UA	2	—
JetBlue B6	1	—
Southwest Airlines WN	1	—

Impact by region

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

Center	Status
Boston Center (ZBW)	Held
Washington Center (ZDC)	Held
New York Center (ZNY)	Held
Cleveland Center (ZOB)	Held
Atlanta Center (ZTL)	Held

Timeline

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

Nov 12, 1:59 PM EST
Ground stop issued at LGA for thunderstorms, until 3:00 pm EST. Departures held from ZDC, ZNY, ZOB, ZBW.
Nov 12, 2:07 PM EST
Reason changed to thunderstorms.
Nov 12, 2:07 PM EST
Chance of extension now medium.
Nov 12, 2:07 PM EST
Scope widened: departures now also held from ZTL.
Nov 12, 2:07 PM EST
New advisory issued.
Read the advisory ↗
Nov 12, 2:08 PM EST
Reason changed to thunderstorms.
Nov 12, 2:57 PM EST
Extended until 3:45 pm EST.
Nov 12, 2:57 PM EST
New advisory issued.
Read the advisory ↗
Nov 12, 3:03 PM EST
Scope widened: departures now also held from ZJX, ZMA.
Nov 12, 3:03 PM EST
New advisory issued.
Read the advisory ↗
Nov 12, 3:38 PM EST
Ground stop ended after 1 hr 39 min.

Advisories

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

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 ZMA

Original advisory ↗

ATCSCC ADVZY 092 LGA/ZNY 11/12/2026 CDM GROUND STOP

CTL ELEMENT: LGA
ELEMENT TYPE: APT
ADL TIME: 1950Z
GROUND STOP PERIOD: 12/1940Z - 12/2045Z
CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z
DEP FACILITIES INCLUDED: (Manual) ZTL ZDC ZNY ZOB ZBW  CYHZ CYOW CYUL
 CYYZ CYTZ CYQB
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 2265 / 148 / 67
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 3511 / 195 / 103
PROBABILITY OF EXTENSION: MEDIUM
IMPACTING CONDITION: WEATHER / THUNDERSTORMS
COMMENTS: GS EXTENDED. SAME SCOPE. GDP REVISION TO FOLLOW

Original advisory ↗

ATCSCC ADVZY 081 LGA/ZNY 11/12/2026 CDM GROUND STOP

CTL ELEMENT: LGA
ELEMENT TYPE: APT
ADL TIME: 1903Z
GROUND STOP PERIOD: 12/1844Z - 12/2000Z
CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z
DEP FACILITIES INCLUDED: (Manual) ZTL ZDC ZNY ZOB ZBW  CYHZ CYOW CYUL
 CYYZ CYTZ CYQB
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 526 / 153 / 66
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 752 / 156 / 94
PROBABILITY OF EXTENSION: MEDIUM
IMPACTING CONDITION: WEATHER / THUNDERSTORMS
COMMENTS: ZTL ADEDED TO THE STOP

Original advisory ↗

ATCSCC ADVZY 078 LGA/ZNY 11/12/2026 CDM GROUND STOP

CTL ELEMENT: LGA
ELEMENT TYPE: APT
ADL TIME: 1854Z
GROUND STOP PERIOD: 12/1844Z - 12/2000Z
CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z
DEP FACILITIES INCLUDED: (Manual) ZDC ZNY ZOB ZBW  CYHZ CYOW CYUL
 CYYZ CYTZ CYQB
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 766 / 122 / 35
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1897 / 197 / 86
PROBABILITY OF EXTENSION: HIGH
IMPACTING CONDITION: WEATHER / THUNDERSTORMS
COMMENTS: GROUND STOP DUE TO LOSS OF DEPARTURE ROUTES.

Original advisory ↗

Where flights were held

Departures to LGA were held from 7 centers (Manual).

Chance of extension: MEDIUM

Weather at the time

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

When it started

MVFR

METAR KLGA 121851Z 05016KT 3SM TSRA BR SCT016 BKN032CB OVC055 13/11 A2946 RMK AO2 PK WND 06027/1829 SFC VIS 4 SLP977 OCNL LTGIC OHD TS OHD MOV N P0010 T01280106 $ · observed Nov 12, 1:51 PM EST

Tornado Warning · Tornado Warning issued November 12 at 1:56PM EST until November 12 at 2:00PM EST by NWS Upton NY

Over the airport: Convective SIGMET 63E.

Latest during the stop

IFR

SPECI KLGA 122017Z 04022G31KT 2SM +TSRA BR FEW013 BKN035CB OVC050 13/11 A2943 RMK AO2 PK WND 04031/2015 SFC VIS 3 OCNL LTGIC OHD TS OHD MOV N P0007 T01280111 $ · observed Nov 12, 3:17 PM EST

Flash Flood Warning · Flash Flood Warning issued November 12 at 2:10PM EST until November 12 at 5:15PM EST by NWS Upton NY

Over the airport: Convective SIGMET 67E.

In the news

Headlines that mention this airport and the disruption. Links open the publisher.

Rain and wind force air travel delays around New York City
New York Daily News · Nov 12, 2:42 PM EST

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.