Is there a ground stop at ALO today?
Live FAA delay status for Waterloo Regional Airport (KALO, Waterloo, IA): ground stops, ground delay programs and delays right now, what the FAA has listed for ALO recently, and how often flights here actually run late.
No ground stop at ALO right now, but the FAA is reporting an airport closure event.
Details are in the FAA delay status card below. Checked Sep 22, 2026 · 2033Z (3:33 PM CDT); this page refreshes about every two minutes.
FAA Delay Status
FAA NAS Status for KALO
FAA NAS Status is reporting an airport closure event for Waterloo Regional Airport (KALO).
Updated Sep 18, 2026 · 1930Z (2:30 PM CDT) · Source: FAA NAS Status
View all FAA delays → FAA status ↗
Verify with official FAA sources before operational decisions.
Recent FAA events at ALO
Ground stops and delay programs the FAA has listed for ALO in the last 90 days, from ATIS Alerts' own log of FAA NAS Status.
- Airport ClosureSep 8, 2026 · 0901Z (4:01 AM CDT)in effect
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.
How often is ALO delayed?
Airline on-time performance at ALO, Jun 2025 to May 2026, from the US DOT Bureau of Transportation Statistics.
664 scheduled airline arrivals and 663 departures in the period. Best month: Oct 2025 (85.2% on time); worst: Dec 2025 (58.8%). 39% of arrival delay minutes were charged to weather or the National Airspace System, the categories a ground stop or ground delay program falls under.
On-time arrivals by month
Bar = share of arrivals within 15 minutes of schedule; largest month had 61 arrivals.
What caused the delays
- 49%Late-arriving aircraft
- 21%National Airspace System (ATC, volume, non-extreme weather)
- 18%Extreme weather
- 12%Airline (crew, maintenance, ground handling)
- 0%Security
Shares of delay minutes on arrivals 15+ minutes late, as reported by the carriers to the DOT.
Source: BTS Airline On-Time Performance (reporting carriers; regional, cargo, and general aviation flights are not included). Published about two months after each month ends.
Weather at KALO right now
Weather drives most ground stops: thunderstorms, low ceilings, wind and snow.
METAR KALO 221954Z 08012KT 10SM OVC040 16/11 A3029 RMK AO2 SLP258 T01610111
What a ground stop at ALO means
When the FAA issues a ground stop for Waterloo Rgnl, 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.
Passengers:your aircraft is probably sitting at its origin; the airline's "delayed" status usually resolves in waves after the stop lifts. Pilots: a stop at ALO ripples into the satellite airports and the whole TRACON; check the national board for programs at your alternate.
Terminology: ground stops explained · GDPs and EDCTs explained
ALO ground stop FAQ
How do I know if ALO 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 Waterloo Rgnl; green means it does not. The official source is nasstatus.faa.gov.
How long do ground stops at ALO last?
We have not recorded enough ground stops here yet to give an airport-specific 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 ALOare 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.