A “roll cloud” spotted off the coast of Portugal looked like something out of a movie. Here’s the science behind it.

The dark, tsunami-like cloud formation billowed across parts of Portugal’s northern and central coasts, as the country set a ...

Check out these breathtaking mammatus clouds that lit up the skies over Bryan last month, leaving Texans in awe of the dramatic natural display.

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Goldman Sachs initiates buy rating on Nvidia with $185 price target following the company's historic $4 trillion market valuation milestone.

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People enjoying the sunshine at a beach were shocked when they witnessed a rare 'tsunami roll' that looked like it was 'out ...

Beachgoers in Portugal scrambled for cover over the weekend as the sweltering heat gave birth to a rare “tsunami roll,” or ominous wave of dark clouds over the water.

KETV Skycam Network shows shelf cloud moving into the Omaha metro around 2 a.m. Thursday.