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

But the behavior of these lab-based cloud particles mimics the behavior of cloud particles in massive sky-sweeping clouds ... its atmospheric composition,” Johnson said. “We see it a little ...

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

A weak disturbance is moving over Montana and Wyoming at this time, and it will push over our region overnight. We can expect ...

On Saturday, in Washington, November flung off the gray mask it wore on Friday and once more dazzled the city with the glories of late autumn, with blue ... many clouds shared the sky, they ...

We had a special treat Wednesday morning due to noctilucent clouds that are rarely seen in the Florida sky. Noctilucent clouds ... characteristic iridescent blue hue. This striking color arises ...