Kelvin-Helmholtz clouds, also known as fluctus clouds, is a rare phenomenon that's easy to miss because it disappears so quickly. But its distinct water-like waves makes it a favorite among cloud ...

Weather Did you see it? Here’s what made D.C.’s sunset so dazzling on Thursday. A conveniently placed cloud deck, perfect sun angle and ‘gravity waves’ played a role ...

Weather Rare 'ocean wave' clouds spotted over Valrico The clouds are called Kelvin-Helmholtz clouds and are unusual to see in Florida.

Lots of viewers were stunned by the clouds in the sky during the sunset Monday night. They're called cumulonimbus or mammatus clouds.

The science behind the viral picture of California wildfires that is actually a Hawaiian sunset.

The “Godzilla” Saharan dust cloud over the US, explained The giant dust cloud is part of a system that feeds the ocean, fertilizes the rainforest, and suppresses hurricanes.

Heavy cloud cover got in the way of Monday night's view of the "Manhattanhenge" sunset, and the weather forecast is not looking too bright for Tuesday night.

Clouds mimicking ocean waves astonished residents across northern Alabama last week. These clouds are known as undulatus asperatus — say that five times fast!

However the fire like appearance of the clouds was due to the sunset which made the sky look like a molten shimmering sea. Penny Bowman, from Melbourne, Victoria, took the amazing photographs, and ...