Is there a ground stop at MMU today?
Live FAA delay status for Morristown Municipal Airport (KMMU, Morristown, NJ): ground stops, ground delay programs and delays right now, what the FAA has listed for MMU recently.
No: the FAA is not reporting a ground stop at MMU right now.
FAA NAS Status lists no ground stop, ground delay program, or delay event for Morristown Muni. Checked Sep 22, 2026 · 2034Z (4:34 PM EDT); this page refreshes about every two minutes.
Recent FAA events at MMU
Ground stops and delay programs the FAA has listed for MMU in the last 90 days, from ATIS Alerts' own log of FAA NAS Status.
- Airport ClosureSep 17, 2026 · 1602Z (12:02 PM EDT)lasted 58 min · !mmu 09/100 mmu ad ap clsd 2609171600-2609171700
- Ground StopJul 28, 2026 · 2332Z (7:32 PM EDT)lasted 4h 12m · thunderstorms
Durations are the time the FAA kept the event listed. Log complete from 2026-09-22; older rows are the last event of each type seen by the ATIS Alerts bot since 2026-07-22.
Weather at KMMU right now
Weather drives most ground stops: thunderstorms, low ceilings, wind and snow.
METAR KMMU 221945Z 06008G16KT 10SM BKN041 BKN050 BKN120 20/12 A3030
What a ground stop at MMU means
When the FAA issues a ground stop for Morristown Muni, aircraft headed there are held at their departure airports until it lifts; flights already airborne continue, hold, or divert. It is the FAA's most severe traffic-management step short of closing the airport, and it is usually issued in 30 to 90 minute increments that get extended while the cause persists, then often converted into a ground delay program as conditions improve.
MMUis not a major airline hub, so FAA stops here are uncommon and usually tied to a busy nearby hub's weather or to an event at the field itself. When a nearby Class B airport is stopped, expect flow into MMU, full ramps, and clearance delays across the area.
Terminology: ground stops explained · GDPs and EDCTs explained
MMU ground stop FAQ
How do I know if MMU has a ground stop right now?
The banner at the top of this page reads the FAA's NAS Status feed about every two minutes. A red banner means the FAA currently lists a ground stop for Morristown Muni; green means it does not. The official source is nasstatus.faa.gov.
How long do ground stops at MMU last?
The ground stops we have recorded at MMU stayed listed for about 255 minutes on average. Nationally, most stops run 30 to 90 minutes per issuance, but a stalled line of storms can keep one extended for hours.
Does a ground stop mean my flight is cancelled?
No. It means departures to MMUare held, not cancelled. Airlines cancel on their own when the backlog cannot be recovered, so watch your carrier's updates alongside this page.
⚠️ Informational only. FAA NAS Status is the authoritative source for delay programs; your airline or dispatch governs your flight. ATIS Alerts is not affiliated with the FAA.