Ideal conditions do not exist :). The example shows the nice weather that could allow interesting flights in the Alps. The lower floors could have higher humidity for a calmer flight.
0 isotherm could be positioned higher.
Light wind even at altitude.

Winter will only be high.

Condensation clouds a lot

Cape, precipitation and cloud cover is minimal

Instability is coming soon (08h)

Instability is late too (19h)

At altitude, the wind is minimal

Relative gusts minimal

The probability of thunderstorms is small
