San Diego-area residents can expect increased humidity and chances of thunderstorms and isolated showers for the end of the ...

Photos shared on social media show what resembles a massive UFO over ice-covered Grandfather Mountain in North Carolina. Park officials say the image is of a unique cloud formation.

Altocumulus clouds are "mid-level clouds composed primarily of water droplets," according to the National Oceanic and Atmospheric Administration (NOAA). These groups of fleecy clouds share some ...

This image images to show Altocumulus clouds taken from an airplane at sunset. Before this image was attached to the wildfire claim, it was shared with the following caption on Reddit ...