Wildfire activity intensified across the western United States over the weekend, with strong winds and dry conditions fueling flames and forcing evacuations in many spots.

Firefighters working on the nation's largest current wildfire, burning in southern Utah, are being challenged by historic weather conditions. Extreme wildfire behavior is expected…

The largest fire in the United States has marched through thousands of acres of tinder-dry forest in Utah, fueled by conditions that fire managers and experts call unprecedented.