Ground stop at Boston Logan (BOS), Nov 12, 2026

EndedThunderstorms halt Boston departures for about an hour

Started: Thu, Nov 12, 1:55 PM EST18:55 UTC
Ended: Thu, Nov 12, 3:00 PM EST20:00 UTC
Duration: 1 hr 5 min
Cause: thunderstorms

Check your flight

Enter your flight number to see its EDCT, the ground stop or delay program at its destination, and its status.

What happened

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

Cause: Thunderstorms along flight routes left no open path through the Washington-area air traffic control center, so departures bound for Boston were held.

The ground stop began at 18:55 UTC and ended at 20:00 UTC, lasting 1 hour 5 minutes. Departures were held from three air traffic control centers, and average delays reached 102 minutes. The stop was not extended and had ended by the time of the last update.

Impact by airline

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

Airline	On ground	Holding
American Airlines AA	3	—
Delta Air Lines DL	2	—
Republic Airways YX	2	—
JetBlue B6	1	—
Swiss LX	1	—
Virgin Atlantic VS	1	—

Impact by region

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

Center	Status
Washington Center (ZDC)	Held
Jacksonville Center (ZJX)	Held
Atlanta Center (ZTL)	Held

Timeline

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

Nov 12, 1:55 PM EST
Ground stop issued at BOS for thunderstorms, until 3:00 pm EST. Departures held from ZDC, ZTL, ZJX.
Nov 12, 3:00 PM EST
Ground stop ended after 1 hr 5 min.

Advisories

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

ATCSCC ADVZY 076 BOS/ZBW 11/12/2026 CDM GROUND STOP

CTL ELEMENT: BOS
ELEMENT TYPE: APT
ADL TIME: 1851Z
GROUND STOP PERIOD: 12/1841Z - 12/2000Z
CUMULATIVE PROGRAM PERIOD: 12/1800Z - 13/0459Z
DEP FACILITIES INCLUDED: (Manual) ZDC ZTL ZJX
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 602 / 144 / 55
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1118 / 181 / 102
PROBABILITY OF EXTENSION: MEDIUM
IMPACTING CONDITION: WEATHER / THUNDERSTORMS
COMMENTS: LACK OF ROUTE THROUGH ZDC

Original advisory ↗

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