and as these ice crystals fall, they pass through different layers with different winds and they speed up and slow down, giving the cloud these brush-stroked appearances, these brush-stroke forms known as fall streaks.
Terwijl deze ijskristallen vallen, komen ze langs verschillende lagen met verschillende winden, ze gaan sneller en trager, waardoor de wolk eruitziet alsof ze geborsteld is, borstelstreken die we kennen als 'valstrepen'.