Key Terms You’ll See

• EDR (Eddy Dissipation Rate): The scientific measure of turbulence. Higher numbers = bumpier air.
• Light / Moderate / Severe: The three main levels. Light may jiggle your drink, moderate is very noticeable but safe, and severe — while rare — is still within aircraft tolerance.
• Jet Streams: Strong winds high in the atmosphere. These often cause turbulence when planes cross them.
• Altitude Reports: Forecasts show turbulence by altitude, which is why pilots often “climb” or “descend” to find smoother air.

How Pilots Use These Reports

Pilots don’t just glance at one chart. They use a combination of reports, real-time radar, and communication with other pilots. This teamwork ensures they pick the smoothest and safest path possible.

What Passengers Should Focus On

Don’t get lost in the technical details. The big picture is this: turbulence forecasts aren’t warnings of danger — they’re planning tools. Airlines use them to anticipate bumps and reduce discomfort whenever possible.

So next time you hear the captain mention “light chop ahead,” you’ll know:

• It’s expected.
• It’s normal.
• It’s managed.