Mount Rainier is an active stratovolcano 45 miles southeast of Tacoma and 60 miles south-southeast of Seattle. Its last ...

A cloud formation seen over Washington's Mount Rainier led to speculation on social media about the active volcano venting. Park experts assured that it was not.

Lenticular is the overarching name given to those lens-like, stationary clouds that form because of some sort of obstruction, such as a mountain, to a moist airflow.

As a round, orange-tinted cloud hovered Thursday over Bursa, Turkey, it might have looked like a flying saucer was about to land. But it was just a lenticular cloud — not uncommon in the ...

A video of Mount Rainier shows a lenticular cloud hovering over it on Sept. 7, 2022. People on social media initially thought it was a sign of volcanic activity. Screengrab from Kristin Clark’s ...

Geologists are scrambling to notify the public that there are no signs of abnormal behavior, after a tweet caused a stir about Mount Rainier.

Lenticular clouds often form when moist air is pushed up and over the top of a mountain, forming a disc-shaped cloud. Mount Rainier has not produced a significant eruption in the past 500 years.

A video of Mount Rainier shows a lenticular cloud hovering over it on Sept. 7, 2022. People on social media initially thought it was a sign of volcanic activity. Screengrab from Kristin Clark’s ...

Mount Rainier is NOT erupting. We have looked at the cloud that has caused concern from multiple webcams and have determined that it is a lenticular cloud.