The best time to see noctilucent clouds is on clear nights between late May and mid-August, about 90 to 120 minutes after ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start ...

The clip posted by @verivanessa shows a large cloud at sunrise appearing to sit just above the horizon, with a long, dark rectangular beam stretching across an orange-pink sky. A note overlaid on ...

For much of the day, the dark clouds moved across the sky, encroaching on its blue sectors, dimming the light of the sun, seemingly preparing to bring rain somewhere, perhaps on a suburban barbecue.

Storm clouds come in many shapes and sizes ... The sun is still shining but, the sky is extremely dark to the west. Pitch black, as many would call it. I remember growing up seeing this type ...

GREENSBORO, N.C. — If you’ve ever looked up and seen a dark, menacing cloud stretching across the sky like a giant wedge, you’ve likely witnessed a shelf cloud. With their dramatic ...