What happened
AI-written · may contain mistakes. Written from the advisory text and weather only.
Cause: Air traffic control was short of staff, so flights leaving Newark were held. The stop began over thunderstorms, and staffing became the stated reason later on.
The ground stop began at 22:13 UTC on October 16 for thunderstorms, and was extended and widened to more air traffic control centers. The reason changed to staffing at 23:36 UTC, and the stop was extended until 9:15 pm EDT. It ended at 01:16 UTC on October 17, after 3 hours 3 minutes.
Impact by airline
Flights to and from EWR scheduled during the ground stop and the hour after it. Delayed means 15+ minutes late.
- Flights
- 250
- Delayed
- 158
- Cancelled
- 3
- Arrivals / departures
- 129 / 121
| Airline | Flights | Delayed / cancelled | Avg delay | On ground | Holding |
|---|---|---|---|---|---|
| United Airlines UA | 134 | 73 / 0 | 81 min | 17 | — |
| Republic Airways YX | 50 | 38 / 0 | 80 min | 1 | — |
| GoJet Airlines G7 | 18 | 13 / 2 | 109 min | 2 | — |
| American Airlines AA | 7 | 7 / 0 | 84 min | 1 | — |
| Jazz QK | 4 | 3 / 1 | 83 min | 1 | — |
| Delta Air Lines DL | 5 | 3 / 0 | 60 min | — | — |
| Endeavor Air 9E | 4 | 3 / 0 | 120 min | — | — |
| Alaska Airlines AS | 3 | 2 / 0 | 97 min | 1 | — |
| JetBlue B6 | 3 | 2 / 0 | 150 min | 1 | — |
| Air Canada AC | 2 | 2 / 0 | 70 min | 1 | — |
| Lufthansa LH | 2 | 2 / 0 | 105 min | — | — |
| PTR PTR | 2 | 2 / 0 | 62 min | — | — |
| Swiss LX | 2 | 1 / 0 | 35 min | 1 | — |
| TAP Air Portugal TP | 2 | 1 / 0 | 35 min | 1 | — |
| British Airways BA | 2 | 1 / 0 | 48 min | — | — |
Delayed 15+ min CancelledOn ground / holding: most seen at once.
Held at origin
Flights to EWR still on the ground at their origin 15+ minutes past their scheduled departure while the stop is in effect; now as of Oct 16, 8:44 PM EDT. Held time is minutes past the scheduled departure.
- Held now
- 36
- Held during the stop
- 45
- Average held
- 1 hr 54 min
- Longest
- 7 hr 29 min
12 from airports in the stop's scope; 33 from outside it, late for other reasons. Of the held flights, 8 since departed and 1 cancelled.
By origin
| Origin | Scope | Now | Held | Avg | Longest |
|---|---|---|---|---|---|
| BOS Boston | In scope | 2 | 3 | 1 hr 27 min | 2 hr 29 min |
| ORF Norfolk | In scope | 2 | 2 | 1 hr 37 min | 2 hr 55 min |
| DCA Arlington | In scope | 1 | 2 | 1 hr 31 min | 2 hr 37 min |
| BTV Burlington | In scope | 1 | 1 | 1 hr 31 min | 1 hr 31 min |
| BUF Buffalo | In scope | 1 | 1 | 1 hr 2 min | 1 hr 2 min |
| CLE Cleveland | In scope | 1 | 1 | 1 hr 24 min | 1 hr 24 min |
| RIC Richmond | In scope | 1 | 1 | 2 hr 42 min | 2 hr 42 min |
| PIT Pittsburgh | In scope | — | 1 | 53 min | 53 min |
| ATL Atlanta | Outside | 3 | 3 | 55 min | 1 hr 43 min |
| MCO Orlando | Outside | 3 | 3 | 2 hr 11 min | 2 hr 34 min |
| CLT Charlotte | Outside | 2 | 2 | 1 hr 7 min | 1 hr 49 min |
| DJT | Outside | 2 | 2 | 1 hr 5 min | 1 hr 6 min |
| MIA Miami | Outside | 2 | 2 | 52 min | 58 min |
| YYZ | Outside | 2 | 2 | 1 hr 14 min | 1 hr 44 min |
| CMH Columbus | Outside | 1 | 2 | 2 hr 17 min | 4 hr 4 min |
By airline
| Airline | Now | Held | Avg | Longest |
|---|---|---|---|---|
| United Airlines UA | 14 | 18 | 2 hr 25 min | 7 hr 29 min |
| Republic Airways YX | 9 | 11 | 1 hr 39 min | 2 hr 42 min |
| GoJet Airlines G7 | 5 | 7 | 1 hr 40 min | 2 hr 55 min |
| American Airlines AA | 4 | 4 | 1 hr 10 min | 1 hr 49 min |
| JetBlue B6 | 2 | 3 | 1 hr 48 min | 2 hr 32 min |
| Delta Air Lines DL | 1 | 1 | 29 min | 29 min |
| Frontier Airlines F9 | 1 | 1 | 1 hr 43 min | 1 hr 43 min |
Inbound in the air and diversions
Flights to EWR that had departed and not yet landed, at each arrivals board sample while the stop is in effect, and inbound flights that landed somewhere else instead.
- In the air now
- 82
- Peak in the air
- 95
- Diverted
- 0
In the air to EWR
In the air now (Oct 16, 8:44 PM EDT), by airline
- United Airlines UA50
- Republic Airways YX8
- American Airlines AA4
- GoJet Airlines G74
- Alaska Airlines AS2
- Endeavor Air 9E2
- TAP Air Portugal TP2
- Aeroméxico AM1
Diversions
No inbound flight has been seen diverting so far.
Impact by region
Arrivals by the air traffic control center they departed from. Held: departures from that center were stopped.
| Center | Status | Arrivals | Delayed | Cancelled |
|---|---|---|---|---|
| Washington Center (ZDC) | Held | 9 | 7 | 1 |
| Cleveland Center (ZOB) | Held | 10 | 6 | 0 |
| Boston Center (ZBW) | Held | 6 | 5 | 0 |
| New York Center (ZNY) | Held | 0 | 0 | 0 |
| Outside the US centers | Not held | 37 | 23 | 1 |
| Atlanta Center (ZTL) | Not held | 9 | 9 | 0 |
| Miami Center (ZMA) | Not held | 9 | 7 | 0 |
| Chicago Center (ZAU) | Not held | 7 | 7 | 0 |
| Los Angeles Center (ZLA) | Not held | 8 | 6 | 0 |
| Indianapolis Center (ZID) | Not held | 6 | 6 | 0 |
| Jacksonville Center (ZJX) | Not held | 6 | 5 | 0 |
| Denver Center (ZDV) | Not held | 3 | 3 | 0 |
| Oakland Center (ZOA) | Not held | 3 | 3 | 0 |
| Albuquerque Center (ZAB) | Not held | 2 | 2 | 0 |
| Fort Worth Center (ZFW) | Not held | 2 | 2 | 0 |
| Kansas City Center (ZKC) | Not held | 2 | 2 | 0 |
| Houston Center (ZHU) | Not held | 3 | 1 | 0 |
| Seattle Center (ZSE) | Not held | 3 | 1 | 0 |
| Memphis Center (ZME) | Not held | 2 | 1 | 0 |
| Minneapolis Center (ZMP) | Not held | 1 | 1 | 0 |
| San Juan Center (ZSU) | Not held | 1 | 0 | 0 |
Aircraft at the airport
Peak 21 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 EWR for thunderstorms, until 7:15 pm EDT. Departures held from ZDC.
Reason changed to thunderstorms.
Extended until 8:15 pm EDT.
New advisory issued.
Read the advisory ↗Reason changed to thunderstorms.
Scope widened: departures now also held from ZAU, ZTL, ZNY, ZJX and 4 more.
Reason changed to staffing.
Extended until 8:30 pm EDT.
New advisory issued.
Read the advisory ↗Extended until 9:15 pm EDT.
Scope narrowed: departures from ZAU, ZTL, ZJX, ZID and 1 more released.
New advisory issued.
Read the advisory ↗Ground stop ended after 3 hr 3 min.
Advisories
The air traffic control advisories issued for this ground stop, as published.
ATCSCC ADVZY 009 EWR/ZNY 10/17/2026 CDM GROUND STOP
CTL ELEMENT: EWR ELEMENT TYPE: APT ADL TIME: 0009Z GROUND STOP PERIOD: 16/2359Z - 17/0115Z CUMULATIVE PROGRAM PERIOD: 16/2100Z - 17/0459Z DEP FACILITIES INCLUDED: (Manual) ZDC ZNY ZOB ZBW CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 1650 / 211 / 69 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 2384 / 256 / 99 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: STAFFING / STAFFING COMMENTS: REDUCED SCOPE TO 1ST TIER + CZY, 2ND TIER FACILITIES RELEASED FROM GROUND STOP.Original advisory ↗
ATCSCC ADVZY 182 EWR/ZNY 10/16/2026 CDM GROUND STOP
CTL ELEMENT: EWR ELEMENT TYPE: APT ADL TIME: 2327Z GROUND STOP PERIOD: 16/2252Z - 17/0030Z CUMULATIVE PROGRAM PERIOD: 16/2100Z - 17/0459Z DEP FACILITIES INCLUDED: (Manual) ZAU ZTL ZDC ZNY ZJX ZOB ZBW ZID ZMP CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 1198 / 196 / 57 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1770 / 211 / 84 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: STAFFING / STAFFING COMMENTS:Original advisory ↗
ATCSCC ADVZY 171 EWR/ZNY 10/16/2026 CDM GROUND STOP
CTL ELEMENT: EWR ELEMENT TYPE: APT ADL TIME: 2302Z GROUND STOP PERIOD: 16/2252Z - 17/0015Z CUMULATIVE PROGRAM PERIOD: 16/2100Z - 17/0459Z DEP FACILITIES INCLUDED: (Manual) ZDC PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 385 / 137 / 55 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 744 / 196 / 106 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / THUNDERSTORMS COMMENTS: NO ROUTESOriginal advisory ↗
ATCSCC ADVZY 156 EWR/ZNY 10/16/2026 CDM GROUND STOP
CTL ELEMENT: EWR ELEMENT TYPE: APT ADL TIME: 2210Z GROUND STOP PERIOD: 16/2155Z - 16/2315Z CUMULATIVE PROGRAM PERIOD: 16/2100Z - 17/0459Z DEP FACILITIES INCLUDED: (Manual) ZDC PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 120 / 59 / 24 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 345 / 137 / 69 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: WEATHER / THUNDERSTORMS COMMENTS: DUE TO LACK OF ROUTESOriginal advisory ↗