Unveiling the Hidden Dynamics: How Weather Shapes Air Traffic Control

Controllers can provide assistance with adverse conditions when workload allows.

Scott Dennstaedt, Ph.D

Tuesday, June 24, 2025 at 08:00 AM ET

Verified

Edited By:

Travis Tingle

There are many challenges that air traffic controllers face in the National Airspace System (NAS). [Adobe Stock]

Key Takeaways:

Air traffic controllers' primary responsibility is aircraft separation, not weather guidance; they assist with weather when workload permits and rely heavily on pilot reports (PIREPs) due to limitations in their radar's ability to detect certain weather phenomena like light precipitation, clouds, or turbulence.
Pilots are the Pilot In Command (PIC) and should be proactive, assertive, and specific when requesting weather deviations, providing details such as degrees of deviation, duration, or a specific fix.
Early communication and decisive action are crucial; pilots should request deviations well in advance, and if a request for a critical deviation is denied for severe weather, broadcasting "PAN-PAN" and taking necessary action is warranted.

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An air traffic controller’s primary responsibility is to separate aircraft flying under IFR. Yes, controllers have many other ancillary roles that include helping circumnavigate adverse weather, but it’s not their priority to provide a pilot with weather guidance. Nevertheless, controllers do make an attempt to assist pilots around weather when workload permits.

Let’s take a look at the challenges that controllers face in the National Airspace System (NAS) and how to best work with them to minimize your exposure to adverse weather.