The remnants of an "atmospheric river" will move across Arizona Friday into the weekend, but most of the river's flow will ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the world-class stargazing that this city in Arizona has to offer.

Flagstaff, in the midst of one of ... but it will funnel showers into Arizona before dying out. “The mountains between us and the coast of California take the moisture out of the atmosphere ...

Soldiers from the U.S. Army 10th Mountain Division, a light infantry division based at Fort Drum, N.Y., are being deployed to ...

Few cities have as strong a space legacy as Flagstaff, Arizona. This high-elevation mountain town — no, Arizona isn’t all desert — is where Pluto was discovered, where astronauts trained to ...

In fact, that storm added up to 7.6 inches of snowfall. If you are traveling up to Flagstaff or the mountains this weekend, please be careful and take it slow on the roads. Even small to moderate ...

Scientists have long suspected that Mexican long-nosed bats migrate through southeastern Arizona, but without capturing and ...

Flagstaff received several inches of snow overnight from Thursday into Friday. FLAGSTAFF, Ariz. — Flagstaff finally got some ...

February brings Arizona Beer Week to celebrate craft beer throughout the whole state. The 14th annual party features events ...

Parts of Northern Arizona saw less-than-average snowfall so far this winter season, but the region is expected to get some much needed snow.

FLAGSTAFF, Ariz. — A winter storm is making its way across the High Country and the City of Flagstaff is preparing for the possibility of accumulating snow. Chunky snowflakes fell from about 4 p.m. to ...