Lenticular Clouds: Montana's Mysterious Aerial Formations

Meteorologist explains the science behind the stationary, plate-like clouds often seen over the state's mountains.

Mar. 21, 2026 at 1:18am

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Meteorologist Mitchel Coombs examines the fascinating lenticular clouds that can be spotted in the skies over western Montana. These stationary, plate-like cloud formations are created by the flow of air over mountain peaks, and can appear extraterrestrial in nature. Coombs discusses how lenticular clouds form, why they remain fixed in place, and how they can pose challenges or opportunities for pilots.

Why it matters

Lenticular clouds are a unique weather phenomenon that captivate many Montanans, often sparking speculation about their origins. Understanding the science behind these clouds can help the public appreciate the complex atmospheric processes shaping the state's skies, while also informing pilots about the potential hazards or benefits these formations can present.

The details

As air flows over a mountain, it cools and condenses to form a lenticular cloud just past the peak. Stable air and wind shear above the mountain can give the cloud a sharp, distinct shape. After passing the ridge, the air sinks and warms, causing the cloud to evaporate on the downwind side. This process can repeat, creating a series of lenticular "wave clouds" aligned perpendicular to the wind direction.

  • Lenticular clouds most often form in the winter and spring, but can appear at other times of the year.

The players

Mitchel Coombs

A meteorologist who discusses the science behind lenticular clouds in western Montana.

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What they’re saying

“Pilots of powered aircraft tend to avoid flying near lenticular clouds because of the severe turbulence and sinking air at the trailing edge of the cloud.”

— Mitchel Coombs, Meteorologist

“Glider pilots, on the other hand, actively seek them out in order to climb the upward moving air at the leading edge.”

— Mitchel Coombs, Meteorologist

What’s next

If you happen to see lenticular clouds, snap a photo or video and share those with us at www.nbcmontana.com/chimein.

The takeaway

Lenticular clouds are a unique and captivating weather phenomenon in Montana, formed by the complex interaction of air flow and mountain topography. Understanding their science can help the public appreciate the state's dynamic skies, while also informing pilots about the potential hazards and benefits these formations can present.