SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/drone-weather-front-definition

In aviation weather, what is a front?

The zone between two different air masses.

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  1. A line connecting points of equal pressure
  2. The zone between two different air masses ✔
  3. The leading edge of a single thunderstorm

Why: Air masses leave their source regions and run into air with different properties. The boundary zone between them is a front, where temperature, humidity and wind often change quickly.

Huh, didn't know that: A line connecting points of equal pressure on a weather map is called an isobar, not a front.

The dad joke
Why did the cold front break up with the warm front? Things were getting too heated.
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References

Answer: The zone between two different air masses. Air masses leave their source regions and run into air with different properties. The boundary zone between them is a front, where temperature, humidity and wind often change quickly.

  1. Remote Pilot sUAS Study Guide (FAA-G-8082-22), Chapter 3b www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/remote_pilot_study_guide.pdf
    The zone between two different air masses is a frontal zone or front.
    Checked 2026-10-09.

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