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Smoke over Catalinas from controlled burn 25 miles away in Graham County

A prescribed burn in the Southwest portion of the Galiuro Mountains sent a plume of smoke over the Catalina Mountains that was visible from Tucson on Tuesday. Burns in the area are expected to continue until the end of the month. ... Read more»

Monsoons make Southwest deserts bloom, but climate change is making summer rains more erratic

If recent years are any indication, the Southwest is already experiencing the effects of climate change, with record heat waves, larger and catastrophic wildfires, and a monsoon that is basically nonexistent one year, then produces record rainfall and severe weather the next. ... Read more»


Rainbow over Pontatoc

A rainbow arches over Pontatoc Ridge north of Tucson.... Read more»

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Fog and snow shroud Catalinas

The Santa Catalina Mountains were shrouded in clouds and snow Thursday.... Read more»

Photos: Bighorn return to Catalinas

A bit tentatively, 31 bighorn sheep leapt from a trailer and disappeared into the rocky desert scrub as a herd was released in the Catalina Mountains on Monday morning — replacements for sheep that died out in the area on the 1990s. (with video)... Read more»1

Monsoon lightning starts fire in Catalinas

Over 600 lightning strikes were recorded across the Coronado National Forest on Sunday, one of which started a wildfire in the Molina Basin drainage of the Santa Catalina Mountains. The 240-acre Prison Fire was 50 percent contained Tuesday.... Read more»

Public meetings this week on Oracle Ridge mine air quality

Public meetings are scheduled for Wednesday and Thursday on the reopening of an underground copper mine on the north side of the Catalina Mountains. An open house and public hearing on an air quality permit for the mine will be held in Catalina.... Read more»

UA sky survey captures hundreds of millions of stars

The images and data for over 200 million celestial bodies — from stars to supernovas — are now available to the public thanks to the work of astronomers from the University of Arizona and the California Institute of Technology.... Read more»

Hey, what's that white stuff? Or, Yes, Virginia, it can snow in Tucson

The National Weather Service has issued a winter storm warning for Southern Arizona, in effect from 5 a.m. to 7 p.m. Thursday. But that doesn't mean it won't be cold before then, especially in the mountains. A mountain blizzard warning is in effect until 7 p.m. Thursday.... Read more»2