Meet Asperitas, the Trendiest Addition to the Cloud Atlas

Kirill Ignatyev via Flickr Creative Commons // CC BY-NC 2.0
Kirill Ignatyev via Flickr Creative Commons // CC BY-NC 2.0

After years of lobbying, the World Meteorological Organization (WMO) granted asperitas formations a spot in the official cloud canon. The change was part of an update to the International Cloud Atlas released for World Meteorological Day on March 23, 2017.

The first iteration of the cloud atlas, published in the late 19th century, laid down the scientific standards for the monitoring and measurements of clouds and other meteorological phenomena. It formalized the system of taxonomy introduced by amateur cloud-spotter Luke Howard [PDF] in 1802, which mirrored the classification of plants and animals by sorting clouds into 10 major types, or genera, then splitting them further into varieties and species.

The last edition of the atlas was published in 1987. The clouds may not have changed since then, but the world has, and the WMO wants to keep up. The newest edition is all digital and includes measurements and data from 191 different countries and territories. It will also feature one new species—the volutus, or tube-shaped cloud—and five supplementary features, including asperitas.

The inclusion of asperitas is a point of pride for Cloud Appreciation Society founder Gavin Pretor-Pinney, who says members have been sending in photos of asperitas-covered skies for more than a decade.

“Ever since we first noticed distinctive turbulent waves of cloud back in 2006 in images sent from Cedar Rapids, Iowa, U.S., we have argued that this formation did not easily fit within the existing naming system,” CAS noted on its website. “So we are very pleased that now, almost 10 years later, asperitas is finally being accepted as an official classification by the World Meteorological Organization.”

The taxonomy of clouds may sound fluffy to laypeople, but experts like WMO secretary-general Petteri Talaas take it very seriously. “If we want to forecast weather, we have to understand clouds,” he said in a statement. “If we want to model the climate system, we have to understand clouds. And if we want to predict the ability of water resources, we have to understand clouds.”

Spotted something spectacular? Check out the CAS website or the WMO’s submission guidelines [PDF] to share it with the cloud-loving world.

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

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5 Ways to Help Victims of the West Coast’s Wildfires

A wildfire near Shaver Lake, California, earlier this month.
A wildfire near Shaver Lake, California, earlier this month.
David McNew/Getty Images

Wildfires continue to ravage millions of acres across California, Oregon, and Washington, and strong winds forecasted in some of those regions could aggravate the blazes. To prevent future fires, we need to focus on combating climate change through policy reform and sustainable living. But for people directly affected by the fires, their current needs are much more urgent: food, shelter, and funds. Here are five organizations that can help you help victims.

1. Red Cross

The Red Cross has about 600 workers coordinating meal distribution, installing victims in shelters and hotels, and providing other support across Northern California. You can donate to the cause by choosing “Western Wildfires” under “I Want to Support” on the donation page here.

2. GoFundMe

GoFundMe’s affiliated nonprofit,, has created a Wildfire Relief Fund for this particular outbreak of fires on the West Coast. You can make a donation to the overall fund here, or you can explore the separate hubs in the description to find individual GoFundMe pages to give to.

3. Los Angeles Fire Department Foundation

Unfortunately, the city of Los Angeles doesn’t allocate enough public funds to the fire department to equip firefighters with all the important gear they need. The Los Angeles Fire Department Foundation tries to fill those demands by providing things like hydration backpacks, thermal-imaging cameras, brush-clearing tools, and more. You can donate to the general fund here, or choose a specific fire station from the dropdown menu.

4. VEMAnet

VEMAnet (Volunteers for the Emergency Management of Animals Network), is an offshoot of the Good Shepherd Foundation, which links animal owners who need emergency help with volunteers who can transport and/or house their animals—anything from cats to cattle—temporarily. You can post details about what animals you can accommodate here; and if you or someone you know needs help evacuating any pets, you can request help or browse available listings here.

5. California Fire Foundation

The California Fire Foundation’s Supplying Aid to Victims of Emergency (SAVE) program distributes $250 gift cards to wildfire victims, so they can decide for themselves what their most pressing needs are. You can donate here.