Lift band (usable climb; contours every 25 ft, bold every 100 ft)
Air in usable climb
Air flow (no lift for your wing)
Rotor · tree & building wakes
Streaks are real air parcels carried by the modelled wind, coloured by what your
wing would feel: net climb = updraught minus your sink at the speed you must fly to hold position.
Trees, hedges and buildings come from 1 m LiDAR and satellite imagery and shed their own wakes.
Thermals and sea breeze are not modelled. Educational only.
drag to orbit · scroll to zoom · drag the dial to set wind direction · Lifty on GitHub