A new cloud species has been added to the atlas called volutus, more commonly known as a roll cloud by meteorologists. Cloud species are subdivisions of the 10 basic cloud "genera," the WMO says.

In 2005, Gavin Pretor-Pinney travelled from England to Australia just to see a cloud. The cloud in question was a volutus, but locals in North Queensland call it ‘morning glory’. You can see ...

Stand-outs included the volutus, which the organization describes as a "tube-shaped cloud mass" that streaks horizontally across the sky. There are also man-made contrai ls, vapor trails left by ...

New entries include the wave like asperitas, the roll-like volutus, and contrails, clouds formed from the vapour trail of aeroplanes. First published in 1896, the International Cloud Atlas then ...

Other clouds officially added are already well known to the meteorology world, such as volutus, roll clouds, or asperitas clouds which resemble a down-under view of a rough sea-surface above.

It's at this level that asperatus will appear. The revised atlas may also include the new cloud species Volutus — Latin for "rolled." Some new "special clouds" could also make an appearance ...

The long cloud hanging in the blue sky was a volutus, or roll cloud, and it most frequently forms on the front edge of thunderstorms. It’s associated with wind shear, a difference in wind speed ...

Members of the Cloud Appreciation Society proudly walk around with their heads in the clouds. Founded in 2005, the group — which is comprised of more than 48,000 cloud marvellers and spans 120 ...

If you did, you might catch a volutus, or roll cloud, which looks like a tube that appears to be spinning along its horizontal axis. Or perhaps you'll get really lucky, and see a dramatic-looking ...

(Bill Hark) Roll clouds are officially known as Volutus clouds and form in a fashion similar to the shelf cloud that precedes a thunderstorm, but is not attached to a thunderstorm, and in fact ...

Among the new types added to the atlas are the wavy, mesmerizing asperitas cloud, the imposing, roll-like volutus cloud, and the hole-punch cavum cloud. An imposing volutus cloud rolls over Racine ...