How is this forecast made?

European weather agencies publish an atmospheric map every 6 hours — wind direction, speed gradients at altitude. We take that raw data and compute the regions pilots expect turbulence in. The same family of calculation is what airline dispatchers run.

How accurate is it?

This forecast isn't 100% guaranteed. The atmosphere is a live system that changes daily. It's designed to give you context before your flight, not certainty.

Not for flight planning

Information only. Pilot and dispatcher decisions are made with different, more comprehensive data.

What the colors mean

Smooth
Brief
Occasional
Notable

Technical detail

Data source: ECMWF Open Data, 0.25° resolution. Calculation: Ellrod TI2 index (vertical wind shear × deformation), derived from 250 and 300 hPa pressure levels. Presentation: downsampled to 0.5° resolution, refreshed every 6 hours.