2023年10月4日 · As mountain waves travel downwind of the peaks, rotors form underneath the crests of the ascending wave. These rotors can create moderate to severe turbulence. Check out the video below to see where they typically form: So how can you avoid them?

2023年5月19日 · Rotor clouds are turbulent, ragged-looking clouds that form at low altitude under the crests of mountain waves. They rotate about a horizontal axis parallel to the mountain range.

The rotor cloud looks like a line of cumulus. It forms on the lee side and parallel to the ridge line. Its base is near the height of the mountain peak, though the top can extend well above the peak and can merge with the lenticular clouds above. Rotor clouds have ragged leeward edges and are dangerously turbulent. [4]

2024年3月27日 · A turbulent, altocumulus-type cloud formation found in the lee of some large mountain barriers, particularly in the Sierra Nevada near Bishop, California. The air in the cloud rotates around an axis parallel to the range.

2024年9月19日 · Rotor clouds are located in the lower turbulence zone and pose a significant threat to aircraft. You can see them as an eddie of rotating air. Depending on the moisture in the atmosphere, you may see a full rotor cloud or just part of one.

2024年10月10日 · The ragged edges of the clouds and their rotating motion is a clear indication of rotors. Rotors form under the crests of trapped lee waves, and just like the up and down drafts, their strength decreases the further you get away from the mountain range.

Advisory Circular (00-45) Aviation Weather Services, Lenticular and Rotor Clouds

Normally the rotor clouds is centered beneath the lenticular cloud. Most often it extends anywhere from ground level to mountaintop level, but is frequently observed up to 35,000 feet. Destructive turbulence from the rotor rarely exists more than 2,000-3,000 feet above mountaintop level.

rotors can be given away by visual clues in the sky. Altocumulus standing lenticular clouds (ACSL) can develop at the top of individual waves above and downwind of mountains producing a mountain wav. xtend laterally along the entire length of the waves. The clouds would be par.

Rotor location can often be identified if sufficient moisture is available to form an associated rotor cloud. Rotor clouds are found near the top of the rotor circulation and under higher lenticular clouds. Immediately above the rotor cloud, smooth, wavy air is likely.