An Air Force investigation later concluded that what Arnold really saw were disc-shaped wave clouds called lenticular clouds, which are not uncommon in the Cascades and on top of Mt. Rainier, the ...

A UFO-shaped lenticular cloud stunned onlookers in Lianyungang, China, but forecasters say it was likely a result of the terrain. These clouds form when waves of moisture and mountain terrain ...

Sometimes, though, there is a visual cue. These air waves can create altocumulus standing lenticular clouds, which can look like linear, wave-like clouds near the mountains.

The warning is for Western Klamath National Forest, Central Siskiyou County Including Shasta Valley and Siskiyou County from the Cascade Mountains East and South to Mt Shasta.

Northern California forecast: Comfortable Friday as clouds clear The week ends with a cool July day, while thunderstorms return to the Sierra this afternoon.

Timelapse footage captured mesmerizing clouds flowing over Mount Washington and Mount Adams at sunrise on July 22. Footage from the Mount Washington Observatory shows the view of Mount Adams from ...

Nevada County Captures: Lenticular clouds rising from Lake Tahoe Submitted to The Union Jul 22, 2025 1 of 8 ...